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Merge pull request #859 from Gustav-Simonsson/ethash_reloaded 

Ethash reloaded
This commit is contained in:
Jeffrey Wilcke 2015-05-06 11:20:54 -07:00
parent aa884c052d 054947def7
commit 1f26a1b863
49 changed files with 3478 additions and 2453 deletions
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4
Godeps/Godeps.json generated
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@ -17,8 +17,8 @@
},
{
"ImportPath": "github.com/ethereum/ethash",
"Comment": "v23.1-82-g908aad3",
"Rev": "908aad345c9fbf3ab9bbb94031dc02d0d90df1b8"
"Comment": "v23.1-195-g4d50db9",
"Rev": "4d50db90d8bb5f2fae357570366cb8c657a4ddfc"
},
{
"ImportPath": "github.com/howeyc/fsnotify",

19
Godeps/_workspace/src/github.com/ethereum/ethash/.travis.yml generated vendored
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@ -1,14 +1,23 @@
# making our travis.yml play well with C++11 by obtaining g++4.8
# Taken from this file:
# https://github.com/beark/ftl/blob/master/.travis.yml
language: go
go:
- 1.4.2
before_install:
# for g++4.8 and C++11
- sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
# Set up go-ethereum
- sudo apt-get update -y -qq
- sudo apt-get install -yqq libgmp3-dev
- git clone --depth=10 https://github.com/ethereum/go-ethereum ${GOPATH}/src/github.com/ethereum/go-ethereum
# use canned dependencies from the go-ethereum repository
- export GOPATH=$GOPATH:$GOPATH/src/github.com/ethereum/go-ethereum/Godeps/_workspace/
- echo $GOPATH
install:
# need to explicitly request version 1.48 since by default we get 1.46 which does not work with C++11
- sudo apt-get install -qq --yes --force-yes g++-4.8
- sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 50
# need to explicitly request version 1.48 since by default we get 1.46 which does not work with C++11
- sudo apt-get install -qq wget cmake bash libboost-test1.48-dev libboost-system1.48-dev libboost-filesystem1.48-dev nodejs python-pip python-dev
- sudo apt-get install -qq wget cmake bash libboost-test1.48-dev libboost-system1.48-dev libboost-filesystem1.48-dev nodejs python-pip python-dev valgrind
- sudo pip install virtualenv -q
script: "./test/test.sh"

17
Godeps/_workspace/src/github.com/ethereum/ethash/README.md generated vendored
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@ -1,7 +1,22 @@
[![Build Status](https://travis-ci.org/ethereum/ethash.svg?branch=master)](https://travis-ci.org/ethereum/ethash)
[![Windows Build Status](https://ci.appveyor.com/api/projects/status/github/debris/ethash?branch=master&svg=true)](https://ci.appveyor.com/project/debris/ethash-nr37r/branch/master)
# Ethash
For details on this project, please see the Ethereum wiki:
https://github.com/ethereum/wiki/wiki/Ethash
### Coding Style for C++ code:
Follow the same exact style as in [cpp-ethereum](https://github.com/ethereum/cpp-ethereum/blob/develop/CodingStandards.txt)
### Coding Style for C code:
The main thing above all is code consistency.
- Tabs for indentation. A tab is 4 spaces
- Try to stick to the [K&R](http://en.wikipedia.org/wiki/Indent_style#K.26R_style),
especially for the C code.
- Keep the line lengths reasonable. No hard limit on 80 characters but don't go further
than 110. Some people work with multiple buffers next to each other.
Make them like you :)

43
Godeps/_workspace/src/github.com/ethereum/ethash/appveyor.yml generated vendored Normal file
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@ -0,0 +1,43 @@
version: 1.0.0.{build}
environment:
BOOST_ROOT: "c:/projects/ethash/deps/boost"
branches:
only:
- master
- develop
os: Windows Server 2012 R2
clone_folder: c:\projects\ethash
#platform: Any CPU
#configuration: Debug
install:
# by default, all script lines are interpreted as batch
# scripts to run before build
before_build:
- echo "Downloading boost..."
- mkdir c:\projects\ethash\deps
- cd c:\projects\ethash\deps
- curl -O https://build.ethdev.com/builds/windows-precompiled/boost.tar.gz
- echo "Unzipping boost..."
- 7z x boost.tar.gz > nul
- 7z x boost.tar > nul
- ls
- echo "Running cmake..."
- cd c:\projects\ethash
- cmake .
build:
project: ALL_BUILD.vcxproj # path to Visual Studio solution or project
after_build:
- echo "Running tests..."
- cd c:\projects\ethash\test\c\Debug
- Test.exe
- echo "Finished!"

640
Godeps/_workspace/src/github.com/ethereum/ethash/ethash.go generated vendored
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@ -1,32 +1,22 @@
/*
###################################################################################
###################################################################################
#################### ####################
#################### EDIT AND YOU SHALL FEEL MY WRATH - jeff ####################
#################### ####################
###################################################################################
###################################################################################
*/
package ethash
/*
#cgo CFLAGS: -std=gnu99 -Wall
#include "src/libethash/util.c"
#include "src/libethash/internal.c"
#include "src/libethash/sha3.c"
#include "src/libethash/internal.h"
int ethashGoCallback_cgo(unsigned);
*/
import "C"
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"io/ioutil"
"math/big"
"math/rand"
"os"
"path"
"os/user"
"path/filepath"
"runtime"
"sync"
"time"
"unsafe"
@ -38,318 +28,267 @@ import (
"github.com/ethereum/go-ethereum/pow"
)
var minDifficulty = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0))
var (
minDifficulty = new(big.Int).Exp(big.NewInt(2), big.NewInt(256), big.NewInt(0))
sharedLight = new(Light)
)
type ParamsAndCache struct {
params *C.ethash_params
cache *C.ethash_cache
Epoch uint64
const (
epochLength uint64 = 30000
cacheSizeForTesting C.uint64_t = 1024
dagSizeForTesting C.uint64_t = 1024 * 32
)
var DefaultDir = defaultDir()
func defaultDir() string {
home := os.Getenv("HOME")
if user, err := user.Current(); err == nil {
home = user.HomeDir
}
if runtime.GOOS == "windows" {
return filepath.Join(home, "AppData", "Ethash")
}
return filepath.Join(home, ".ethash")
}
type DAG struct {
dag unsafe.Pointer // full GB of memory for dag
file bool
paramsAndCache *ParamsAndCache
// cache wraps an ethash_light_t with some metadata
// and automatic memory management.
type cache struct {
epoch uint64
test bool
gen sync.Once // ensures cache is only generated once.
ptr *C.struct_ethash_light
}
type Ethash struct {
turbo bool
HashRate int64
chainManager pow.ChainManager
dag *DAG
paramsAndCache *ParamsAndCache
ret *C.ethash_return_value
dagMutex *sync.RWMutex
cacheMutex *sync.RWMutex
}
func parseNonce(nonce []byte) (uint64, error) {
nonceBuf := bytes.NewBuffer(nonce)
nonceInt, err := binary.ReadUvarint(nonceBuf)
if err != nil {
return 0, err
}
return nonceInt, nil
}
const epochLength uint64 = 30000
func makeParamsAndCache(chainManager pow.ChainManager, blockNum uint64) (*ParamsAndCache, error) {
if blockNum >= epochLength*2048 {
return nil, fmt.Errorf("block number is out of bounds (value %v, limit is %v)", blockNum, epochLength*2048)
}
paramsAndCache := &ParamsAndCache{
params: new(C.ethash_params),
cache: new(C.ethash_cache),
Epoch: blockNum / epochLength,
}
C.ethash_params_init(paramsAndCache.params, C.uint32_t(uint32(blockNum)))
paramsAndCache.cache.mem = C.malloc(C.size_t(paramsAndCache.params.cache_size))
seedHash, err := GetSeedHash(blockNum)
if err != nil {
return nil, err
}
glog.V(logger.Info).Infof("Making cache for epoch: %d (%v) (%x)\n", paramsAndCache.Epoch, blockNum, seedHash)
start := time.Now()
C.ethash_mkcache(paramsAndCache.cache, paramsAndCache.params, (*C.ethash_blockhash_t)(unsafe.Pointer(&seedHash[0])))
if glog.V(logger.Info) {
glog.Infoln("Took:", time.Since(start))
}
return paramsAndCache, nil
}
func (pow *Ethash) UpdateCache(blockNum uint64, force bool) error {
pow.cacheMutex.Lock()
defer pow.cacheMutex.Unlock()
thisEpoch := blockNum / epochLength
if force || pow.paramsAndCache.Epoch != thisEpoch {
var err error
pow.paramsAndCache, err = makeParamsAndCache(pow.chainManager, blockNum)
if err != nil {
panic(err)
// generate creates the actual cache. it can be called from multiple
// goroutines. the first call will generate the cache, subsequent
// calls wait until it is generated.
func (cache *cache) generate() {
cache.gen.Do(func() {
started := time.Now()
seedHash := makeSeedHash(cache.epoch)
glog.V(logger.Debug).Infof("Generating cache for epoch %d (%x)", cache.epoch, seedHash)
size := C.ethash_get_cachesize(C.uint64_t(cache.epoch * epochLength))
if cache.test {
size = cacheSizeForTesting
}
}
cache.ptr = C.ethash_light_new_internal(size, (*C.ethash_h256_t)(unsafe.Pointer(&seedHash[0])))
runtime.SetFinalizer(cache, freeCache)
glog.V(logger.Debug).Infof("Done generating cache for epoch %d, it took %v", cache.epoch, time.Since(started))
})
}
func freeCache(cache *cache) {
C.ethash_light_delete(cache.ptr)
cache.ptr = nil
}
// Light implements the Verify half of the proof of work.
// It uses a small in-memory cache to verify the nonces
// found by Full.
type Light struct {
test bool // if set use a smaller cache size
mu sync.Mutex // protects current
current *cache // last cache which was generated.
// TODO: keep multiple caches.
}
// Verify checks whether the block's nonce is valid.
func (l *Light) Verify(block pow.Block) bool {
// TODO: do ethash_quick_verify before getCache in order
// to prevent DOS attacks.
var (
blockNum = block.NumberU64()
difficulty = block.Difficulty()
cache = l.getCache(blockNum)
dagSize = C.ethash_get_datasize(C.uint64_t(blockNum))
)
if l.test {
dagSize = dagSizeForTesting
}
if blockNum >= epochLength*2048 {
glog.V(logger.Debug).Infof("block number %d too high, limit is %d", epochLength*2048)
return false
}
// Recompute the hash using the cache.
hash := hashToH256(block.HashNoNonce())
ret := C.ethash_light_compute_internal(cache.ptr, dagSize, hash, C.uint64_t(block.Nonce()))
if !ret.success {
return false
}
// Make sure cache is live until after the C call.
// This is important because a GC might happen and execute
// the finalizer before the call completes.
_ = cache
// The actual check.
target := new(big.Int).Div(minDifficulty, difficulty)
return h256ToHash(ret.result).Big().Cmp(target) <= 0
}
func h256ToHash(in C.ethash_h256_t) common.Hash {
return *(*common.Hash)(unsafe.Pointer(&in.b))
}
func hashToH256(in common.Hash) C.ethash_h256_t {
return C.ethash_h256_t{b: *(*[32]C.uint8_t)(unsafe.Pointer(&in[0]))}
}
func (l *Light) getCache(blockNum uint64) *cache {
var c *cache
epoch := blockNum / epochLength
// Update or reuse the last cache.
l.mu.Lock()
if l.current != nil && l.current.epoch == epoch {
c = l.current
} else {
c = &cache{epoch: epoch, test: l.test}
l.current = c
}
l.mu.Unlock()
// Wait for the cache to finish generating.
c.generate()
return c
}
// dag wraps an ethash_full_t with some metadata
// and automatic memory management.
type dag struct {
epoch uint64
test bool
dir string
gen sync.Once // ensures DAG is only generated once.
ptr *C.struct_ethash_full
}
// generate creates the actual DAG. it can be called from multiple
// goroutines. the first call will generate the DAG, subsequent
// calls wait until it is generated.
func (d *dag) generate() {
d.gen.Do(func() {
var (
started = time.Now()
seedHash = makeSeedHash(d.epoch)
blockNum = C.uint64_t(d.epoch * epochLength)
cacheSize = C.ethash_get_cachesize(blockNum)
dagSize = C.ethash_get_datasize(blockNum)
)
if d.test {
cacheSize = cacheSizeForTesting
dagSize = dagSizeForTesting
}
if d.dir == "" {
d.dir = DefaultDir
}
glog.V(logger.Info).Infof("Generating DAG for epoch %d (%x)", d.epoch, seedHash)
// Generate a temporary cache.
// TODO: this could share the cache with Light
cache := C.ethash_light_new_internal(cacheSize, (*C.ethash_h256_t)(unsafe.Pointer(&seedHash[0])))
defer C.ethash_light_delete(cache)
// Generate the actual DAG.
d.ptr = C.ethash_full_new_internal(
C.CString(d.dir),
hashToH256(seedHash),
dagSize,
cache,
(C.ethash_callback_t)(unsafe.Pointer(C.ethashGoCallback_cgo)),
)
if d.ptr == nil {
panic("ethash_full_new IO or memory error")
}
runtime.SetFinalizer(d, freeDAG)
glog.V(logger.Info).Infof("Done generating DAG for epoch %d, it took %v", d.epoch, time.Since(started))
})
}
func freeDAG(h *dag) {
C.ethash_full_delete(h.ptr)
h.ptr = nil
}
//export ethashGoCallback
func ethashGoCallback(percent C.unsigned) C.int {
glog.V(logger.Info).Infof("Still generating DAG: %d%%", percent)
return 0
}
// MakeDAG pre-generates a DAG file for the given block number in the
// given directory. If dir is the empty string, the default directory
// is used.
func MakeDAG(blockNum uint64, dir string) error {
d := &dag{epoch: blockNum / epochLength, dir: dir}
if blockNum >= epochLength*2048 {
return fmt.Errorf("block number too high, limit is %d", epochLength*2048)
}
d.generate()
if d.ptr == nil {
return errors.New("failed")
}
return nil
}
func makeDAG(p *ParamsAndCache) *DAG {
d := &DAG{
dag: C.malloc(C.size_t(p.params.full_size)),
file: false,
paramsAndCache: p,
}
// Full implements the Search half of the proof of work.
type Full struct {
Dir string // use this to specify a non-default DAG directory
donech := make(chan string)
go func() {
t := time.NewTicker(5 * time.Second)
tstart := time.Now()
done:
for {
select {
case <-t.C:
glog.V(logger.Info).Infof("... still generating DAG (%v) ...\n", time.Since(tstart).Seconds())
case str := <-donech:
glog.V(logger.Info).Infof("... %s ...\n", str)
break done
}
}
}()
C.ethash_compute_full_data(d.dag, p.params, p.cache)
donech <- "DAG generation completed"
test bool // if set use a smaller DAG size
turbo bool
hashRate int64
mu sync.Mutex // protects dag
current *dag // current full DAG
}
func (pow *Full) getDAG(blockNum uint64) (d *dag) {
epoch := blockNum / epochLength
pow.mu.Lock()
if pow.current != nil && pow.current.epoch == epoch {
d = pow.current
} else {
d = &dag{epoch: epoch, test: pow.test, dir: pow.Dir}
pow.current = d
}
pow.mu.Unlock()
// wait for it to finish generating.
d.generate()
return d
}
func (pow *Ethash) writeDagToDisk(dag *DAG, epoch uint64) *os.File {
if epoch > 2048 {
panic(fmt.Errorf("Epoch must be less than 2048 (is %v)", epoch))
}
data := C.GoBytes(unsafe.Pointer(dag.dag), C.int(dag.paramsAndCache.params.full_size))
file, err := os.Create("/tmp/dag")
if err != nil {
panic(err)
}
dataEpoch := make([]byte, 8)
binary.BigEndian.PutUint64(dataEpoch, epoch)
file.Write(dataEpoch)
file.Write(data)
return file
}
func (pow *Ethash) UpdateDAG() {
blockNum := pow.chainManager.CurrentBlock().NumberU64()
if blockNum >= epochLength*2048 {
// This will crash in the 2030s or 2040s
panic(fmt.Errorf("Current block number is out of bounds (value %v, limit is %v)", blockNum, epochLength*2048))
}
pow.dagMutex.Lock()
defer pow.dagMutex.Unlock()
thisEpoch := blockNum / epochLength
if pow.dag == nil || pow.dag.paramsAndCache.Epoch != thisEpoch {
if pow.dag != nil && pow.dag.dag != nil {
C.free(pow.dag.dag)
pow.dag.dag = nil
}
if pow.dag != nil && pow.dag.paramsAndCache.cache.mem != nil {
C.free(pow.dag.paramsAndCache.cache.mem)
pow.dag.paramsAndCache.cache.mem = nil
}
// Make the params and cache for the DAG
paramsAndCache, err := makeParamsAndCache(pow.chainManager, blockNum)
if err != nil {
panic(err)
}
// TODO: On non-SSD disks, loading the DAG from disk takes longer than generating it in memory
pow.paramsAndCache = paramsAndCache
path := path.Join("/", "tmp", "dag")
pow.dag = nil
glog.V(logger.Info).Infoln("Retrieving DAG")
start := time.Now()
file, err := os.Open(path)
if err != nil {
glog.V(logger.Info).Infof("No DAG found. Generating new DAG in '%s' (this takes a while)...\n", path)
pow.dag = makeDAG(paramsAndCache)
file = pow.writeDagToDisk(pow.dag, thisEpoch)
pow.dag.file = true
} else {
data, err := ioutil.ReadAll(file)
if err != nil {
glog.V(logger.Info).Infof("DAG load err: %v\n", err)
}
if len(data) < 8 {
glog.V(logger.Info).Infof("DAG in '%s' is less than 8 bytes, it must be corrupted. Generating new DAG (this takes a while)...\n", path)
pow.dag = makeDAG(paramsAndCache)
file = pow.writeDagToDisk(pow.dag, thisEpoch)
pow.dag.file = true
} else {
dataEpoch := binary.BigEndian.Uint64(data[0:8])
if dataEpoch < thisEpoch {
glog.V(logger.Info).Infof("DAG in '%s' is stale. Generating new DAG (this takes a while)...\n", path)
pow.dag = makeDAG(paramsAndCache)
file = pow.writeDagToDisk(pow.dag, thisEpoch)
pow.dag.file = true
} else if dataEpoch > thisEpoch {
// FIXME
panic(fmt.Errorf("Saved DAG in '%s' reports to be from future epoch %v (current epoch is %v)\n", path, dataEpoch, thisEpoch))
} else if len(data) != (int(paramsAndCache.params.full_size) + 8) {
glog.V(logger.Info).Infof("DAG in '%s' is corrupted. Generating new DAG (this takes a while)...\n", path)
pow.dag = makeDAG(paramsAndCache)
file = pow.writeDagToDisk(pow.dag, thisEpoch)
pow.dag.file = true
} else {
data = data[8:]
pow.dag = &DAG{
dag: unsafe.Pointer(&data[0]),
file: true,
paramsAndCache: paramsAndCache,
}
}
}
}
glog.V(logger.Info).Infoln("Took:", time.Since(start))
file.Close()
}
}
func New(chainManager pow.ChainManager) *Ethash {
paramsAndCache, err := makeParamsAndCache(chainManager, chainManager.CurrentBlock().NumberU64())
if err != nil {
panic(err)
}
return &Ethash{
turbo: true,
paramsAndCache: paramsAndCache,
chainManager: chainManager,
dag: nil,
cacheMutex: new(sync.RWMutex),
dagMutex: new(sync.RWMutex),
}
}
func (pow *Ethash) DAGSize() uint64 {
return uint64(pow.dag.paramsAndCache.params.full_size)
}
func (pow *Ethash) CacheSize() uint64 {
return uint64(pow.paramsAndCache.params.cache_size)
}
func GetSeedHash(blockNum uint64) ([]byte, error) {
if blockNum >= epochLength*2048 {
return nil, fmt.Errorf("block number is out of bounds (value %v, limit is %v)", blockNum, epochLength*2048)
}
epoch := blockNum / epochLength
seedHash := make([]byte, 32)
var i uint64
for i = 0; i < 32; i++ {
seedHash[i] = 0
}
for i = 0; i < epoch; i++ {
seedHash = crypto.Sha3(seedHash)
}
return seedHash, nil
}
func (pow *Ethash) Stop() {
pow.cacheMutex.Lock()
pow.dagMutex.Lock()
defer pow.dagMutex.Unlock()
defer pow.cacheMutex.Unlock()
if pow.paramsAndCache.cache != nil {
C.free(pow.paramsAndCache.cache.mem)
}
if pow.dag.dag != nil && !pow.dag.file {
C.free(pow.dag.dag)
}
if pow.dag != nil && pow.dag.paramsAndCache != nil && pow.dag.paramsAndCache.cache.mem != nil {
C.free(pow.dag.paramsAndCache.cache.mem)
pow.dag.paramsAndCache.cache.mem = nil
}
pow.dag.dag = nil
}
func (pow *Ethash) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte, []byte) {
pow.UpdateDAG()
pow.dagMutex.RLock()
defer pow.dagMutex.RUnlock()
func (pow *Full) Search(block pow.Block, stop <-chan struct{}) (nonce uint64, mixDigest []byte) {
dag := pow.getDAG(block.NumberU64())
r := rand.New(rand.NewSource(time.Now().UnixNano()))
miningHash := block.HashNoNonce()
diff := block.Difficulty()
i := int64(0)
starti := i
start := time.Now().UnixNano()
nonce := uint64(r.Int63())
cMiningHash := (*C.ethash_blockhash_t)(unsafe.Pointer(&miningHash[0]))
nonce = uint64(r.Int63())
hash := hashToH256(block.HashNoNonce())
target := new(big.Int).Div(minDifficulty, diff)
var ret C.ethash_return_value
for {
select {
case <-stop:
pow.HashRate = 0
return 0, nil, nil
pow.hashRate = 0
return 0, nil
default:
i++
elapsed := time.Now().UnixNano() - start
hashes := ((float64(1e9) / float64(elapsed)) * float64(i-starti)) / 1000
pow.HashRate = int64(hashes)
pow.hashRate = int64(hashes)
C.ethash_full(&ret, pow.dag.dag, pow.dag.paramsAndCache.params, cMiningHash, C.uint64_t(nonce))
result := common.Bytes2Big(C.GoBytes(unsafe.Pointer(&ret.result), C.int(32)))
ret := C.ethash_full_compute(dag.ptr, hash, C.uint64_t(nonce))
result := h256ToHash(ret.result).Big()
// TODO: disagrees with the spec https://github.com/ethereum/wiki/wiki/Ethash#mining
if result.Cmp(target) <= 0 {
mixDigest := C.GoBytes(unsafe.Pointer(&ret.mix_hash), C.int(32))
seedHash, err := GetSeedHash(block.NumberU64()) // This seedhash is useless
if err != nil {
panic(err)
}
return nonce, mixDigest, seedHash
if ret.success && result.Cmp(target) <= 0 {
mixDigest = C.GoBytes(unsafe.Pointer(&ret.mix_hash), C.int(32))
return nonce, mixDigest
}
nonce += 1
}
@ -357,82 +296,57 @@ func (pow *Ethash) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte
time.Sleep(20 * time.Microsecond)
}
}
}
func (pow *Ethash) Verify(block pow.Block) bool {
return pow.verify(block.HashNoNonce(), block.MixDigest(), block.Difficulty(), block.NumberU64(), block.Nonce())
func (pow *Full) GetHashrate() int64 {
// TODO: this needs to use an atomic operation.
return pow.hashRate
}
func (pow *Ethash) verify(hash common.Hash, mixDigest common.Hash, difficulty *big.Int, blockNum uint64, nonce uint64) bool {
// Make sure the block num is valid
if blockNum >= epochLength*2048 {
glog.V(logger.Info).Infoln(fmt.Sprintf("Block number exceeds limit, invalid (value is %v, limit is %v)",
blockNum, epochLength*2048))
return false
}
// First check: make sure header, mixDigest, nonce are correct without hitting the cache
// This is to prevent DOS attacks
chash := (*C.ethash_blockhash_t)(unsafe.Pointer(&hash[0]))
cnonce := C.uint64_t(nonce)
target := new(big.Int).Div(minDifficulty, difficulty)
var pAc *ParamsAndCache
// If its an old block (doesn't use the current cache)
// get the cache for it but don't update (so we don't need the mutex)
// Otherwise, it's the current block or a future block.
// If current, updateCache will do nothing.
if blockNum/epochLength < pow.paramsAndCache.Epoch {
var err error
// If we can't make the params for some reason, this block is invalid
pAc, err = makeParamsAndCache(pow.chainManager, blockNum)
if err != nil {
glog.V(logger.Info).Infoln("big fucking eror", err)
return false
}
} else {
pow.UpdateCache(blockNum, false)
pow.cacheMutex.RLock()
defer pow.cacheMutex.RUnlock()
pAc = pow.paramsAndCache
}
ret := new(C.ethash_return_value)
C.ethash_light(ret, pAc.cache, pAc.params, chash, cnonce)
result := common.Bytes2Big(C.GoBytes(unsafe.Pointer(&ret.result), C.int(32)))
return result.Cmp(target) <= 0
}
func (pow *Ethash) GetHashrate() int64 {
return pow.HashRate
}
func (pow *Ethash) Turbo(on bool) {
func (pow *Full) Turbo(on bool) {
// TODO: this needs to use an atomic operation.
pow.turbo = on
}
func (pow *Ethash) FullHash(nonce uint64, miningHash []byte) []byte {
pow.UpdateDAG()
pow.dagMutex.Lock()
defer pow.dagMutex.Unlock()
cMiningHash := (*C.ethash_blockhash_t)(unsafe.Pointer(&miningHash[0]))
cnonce := C.uint64_t(nonce)
ret := new(C.ethash_return_value)
// pow.hash is the output/return of ethash_full
C.ethash_full(ret, pow.dag.dag, pow.paramsAndCache.params, cMiningHash, cnonce)
ghash_full := C.GoBytes(unsafe.Pointer(&ret.result), 32)
return ghash_full
// Ethash combines block verification with Light and
// nonce searching with Full into a single proof of work.
type Ethash struct {
*Light
*Full
}
func (pow *Ethash) LightHash(nonce uint64, miningHash []byte) []byte {
cMiningHash := (*C.ethash_blockhash_t)(unsafe.Pointer(&miningHash[0]))
cnonce := C.uint64_t(nonce)
ret := new(C.ethash_return_value)
C.ethash_light(ret, pow.paramsAndCache.cache, pow.paramsAndCache.params, cMiningHash, cnonce)
ghash_light := C.GoBytes(unsafe.Pointer(&ret.result), 32)
return ghash_light
// New creates an instance of the proof of work.
// A single instance of Light is shared across all instances
// created with New.
func New() *Ethash {
return &Ethash{sharedLight, &Full{turbo: true}}
}
// NewForTesting creates a proof of work for use in unit tests.
// It uses a smaller DAG and cache size to keep test times low.
// DAG files are stored in a temporary directory.
//
// Nonces found by a testing instance are not verifiable with a
// regular-size cache.
func NewForTesting() (*Ethash, error) {
dir, err := ioutil.TempDir("", "ethash-test")
if err != nil {
return nil, err
}
return &Ethash{&Light{test: true}, &Full{Dir: dir, test: true}}, nil
}
func GetSeedHash(blockNum uint64) ([]byte, error) {
if blockNum >= epochLength*2048 {
return nil, fmt.Errorf("block number too high, limit is %d", epochLength*2048)
}
sh := makeSeedHash(blockNum / epochLength)
return sh[:], nil
}
func makeSeedHash(epoch uint64) (sh common.Hash) {
for ; epoch > 0; epoch-- {
sh = crypto.Sha3Hash(sh[:])
}
return sh
}

176
Godeps/_workspace/src/github.com/ethereum/ethash/ethash_test.go generated vendored Normal file
View File

@ -0,0 +1,176 @@
package ethash
import (
"bytes"
"crypto/rand"
"encoding/hex"
"log"
"math/big"
"os"
"sync"
"testing"
"github.com/ethereum/go-ethereum/common"
)
func init() {
// glog.SetV(6)
// glog.SetToStderr(true)
}
type testBlock struct {
difficulty *big.Int
hashNoNonce common.Hash
nonce uint64
mixDigest common.Hash
number uint64
}
func (b *testBlock) Difficulty() *big.Int { return b.difficulty }
func (b *testBlock) HashNoNonce() common.Hash { return b.hashNoNonce }
func (b *testBlock) Nonce() uint64 { return b.nonce }
func (b *testBlock) MixDigest() common.Hash { return b.mixDigest }
func (b *testBlock) NumberU64() uint64 { return b.number }
var validBlocks = []*testBlock{
// from proof of concept nine testnet, epoch 0
{
number: 22,
hashNoNonce: common.HexToHash("372eca2454ead349c3df0ab5d00b0b706b23e49d469387db91811cee0358fc6d"),
difficulty: big.NewInt(132416),
nonce: 0x495732e0ed7a801c,
},
// from proof of concept nine testnet, epoch 1
{
number: 30001,
hashNoNonce: common.HexToHash("7e44356ee3441623bc72a683fd3708fdf75e971bbe294f33e539eedad4b92b34"),
difficulty: big.NewInt(1532671),
nonce: 0x318df1c8adef7e5e,
},
// from proof of concept nine testnet, epoch 2
{
number: 60000,
hashNoNonce: common.HexToHash("5fc898f16035bf5ac9c6d9077ae1e3d5fc1ecc3c9fd5bee8bb00e810fdacbaa0"),
difficulty: big.NewInt(2467358),
nonce: 0x50377003e5d830ca,
},
}
func TestEthashVerifyValid(t *testing.T) {
eth := New()
for i, block := range validBlocks {
if !eth.Verify(block) {
t.Errorf("block %d (%x) did not validate.", i, block.hashNoNonce[:6])
}
}
}
func TestEthashConcurrentVerify(t *testing.T) {
eth, err := NewForTesting()
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(eth.Full.Dir)
block := &testBlock{difficulty: big.NewInt(10)}
nonce, _ := eth.Search(block, nil)
block.nonce = nonce
// Verify the block concurrently to check for data races.
var wg sync.WaitGroup
wg.Add(100)
for i := 0; i < 100; i++ {
go func() {
if !eth.Verify(block) {
t.Error("Block could not be verified")
}
wg.Done()
}()
}
wg.Wait()
}
func TestEthashConcurrentSearch(t *testing.T) {
eth, err := NewForTesting()
if err != nil {
t.Fatal(err)
}
eth.Turbo(true)
defer os.RemoveAll(eth.Full.Dir)
// launch n searches concurrently.
var (
block = &testBlock{difficulty: big.NewInt(35000)}
nsearch = 10
wg = new(sync.WaitGroup)
found = make(chan uint64)
stop = make(chan struct{})
)
rand.Read(block.hashNoNonce[:])
wg.Add(nsearch)
for i := 0; i < nsearch; i++ {
go func() {
nonce, _ := eth.Search(block, stop)
select {
case found <- nonce:
case <-stop:
}
wg.Done()
}()
}
// wait for one of them to find the nonce
nonce := <-found
// stop the others
close(stop)
wg.Wait()
if block.nonce = nonce; !eth.Verify(block) {
t.Error("Block could not be verified")
}
}
func TestEthashSearchAcrossEpoch(t *testing.T) {
eth, err := NewForTesting()
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(eth.Full.Dir)
for i := epochLength - 40; i < epochLength+40; i++ {
block := &testBlock{number: i, difficulty: big.NewInt(90)}
rand.Read(block.hashNoNonce[:])
nonce, _ := eth.Search(block, nil)
block.nonce = nonce
if !eth.Verify(block) {
t.Fatalf("Block could not be verified")
}
}
}
func TestGetSeedHash(t *testing.T) {
seed0, err := GetSeedHash(0)
if err != nil {
t.Errorf("Failed to get seedHash for block 0: %v", err)
}
if bytes.Compare(seed0, make([]byte, 32)) != 0 {
log.Printf("seedHash for block 0 should be 0s, was: %v\n", seed0)
}
seed1, err := GetSeedHash(30000)
if err != nil {
t.Error(err)
}
// From python:
// > from pyethash import get_seedhash
// > get_seedhash(30000)
expectedSeed1, err := hex.DecodeString("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
if err != nil {
t.Error(err)
}
if bytes.Compare(seed1, expectedSeed1) != 0 {
log.Printf("seedHash for block 1 should be: %v,\nactual value: %v\n", expectedSeed1, seed1)
}
}

25
Godeps/_workspace/src/github.com/ethereum/ethash/ethashc.go generated vendored Normal file
View File

@ -0,0 +1,25 @@
package ethash
/*
#cgo CFLAGS: -std=gnu99 -Wall
#cgo windows CFLAGS: -mno-stack-arg-probe
#cgo LDFLAGS: -lm
#include "src/libethash/internal.c"
#include "src/libethash/sha3.c"
#include "src/libethash/io.c"
#ifdef _WIN32
# include "src/libethash/util_win32.c"
# include "src/libethash/io_win32.c"
# include "src/libethash/mmap_win32.c"
#else
# include "src/libethash/io_posix.c"
#endif
// 'gateway function' for calling back into go.
extern int ethashGoCallback(unsigned);
int ethashGoCallback_cgo(unsigned percent) { return ethashGoCallback(percent); }
*/
import "C"

47
Godeps/_workspace/src/github.com/ethereum/ethash/setup.py generated vendored
View File

@ -1,23 +1,36 @@
#!/usr/bin/env python
import os
from distutils.core import setup, Extension
sources = [
'src/python/core.c',
'src/libethash/io.c',
'src/libethash/internal.c',
'src/libethash/sha3.c']
if os.name == 'nt':
sources += [
'src/libethash/util_win32.c',
'src/libethash/io_win32.c',
'src/libethash/mmap_win32.c',
]
else:
sources += [
'src/libethash/io_posix.c'
]
depends = [
'src/libethash/ethash.h',
'src/libethash/compiler.h',
'src/libethash/data_sizes.h',
'src/libethash/endian.h',
'src/libethash/ethash.h',
'src/libethash/io.h',
'src/libethash/fnv.h',
'src/libethash/internal.h',
'src/libethash/sha3.h',
'src/libethash/util.h',
]
pyethash = Extension('pyethash',
sources=[
'src/python/core.c',
'src/libethash/util.c',
'src/libethash/internal.c',
'src/libethash/sha3.c'],
depends=[
'src/libethash/ethash.h',
'src/libethash/compiler.h',
'src/libethash/data_sizes.h',
'src/libethash/endian.h',
'src/libethash/ethash.h',
'src/libethash/fnv.h',
'src/libethash/internal.h',
'src/libethash/sha3.h',
'src/libethash/util.h'
],
sources=sources,
depends=depends,
extra_compile_args=["-Isrc/", "-std=gnu99", "-Wall"])
setup(

44
Godeps/_workspace/src/github.com/ethereum/ethash/src/benchmark/CMakeLists.txt generated vendored
View File

@ -3,56 +3,56 @@ include_directories(..)
set(CMAKE_BUILD_TYPE Release)
if (MSVC)
add_definitions("/openmp")
add_definitions("/openmp")
endif()
# enable C++11, should probably be a bit more specific about compiler
if (NOT MSVC)
SET(CMAKE_CXX_FLAGS "-std=c++11")
SET(CMAKE_CXX_FLAGS "-std=c++11")
endif()
if (NOT MPI_FOUND)
find_package(MPI)
find_package(MPI)
endif()
if (NOT CRYPTOPP_FOUND)
find_package(CryptoPP 5.6.2)
find_package(CryptoPP 5.6.2)
endif()
if (CRYPTOPP_FOUND)
add_definitions(-DWITH_CRYPTOPP)
add_definitions(-DWITH_CRYPTOPP)
find_package (Threads REQUIRED)
endif()
if (NOT OpenCL_FOUND)
find_package(OpenCL)
find_package(OpenCL)
endif()
if (OpenCL_FOUND)
add_definitions(-DWITH_OPENCL)
include_directories(${OpenCL_INCLUDE_DIRS})
list(APPEND FILES ethash_cl_miner.cpp ethash_cl_miner.h)
add_definitions(-DWITH_OPENCL)
include_directories(${OpenCL_INCLUDE_DIRS})
list(APPEND FILES ethash_cl_miner.cpp ethash_cl_miner.h)
endif()
if (MPI_FOUND)
include_directories(${MPI_INCLUDE_PATH})
add_executable (Benchmark_MPI_FULL benchmark.cpp)
target_link_libraries (Benchmark_MPI_FULL ${ETHHASH_LIBS} ${MPI_LIBRARIES})
SET_TARGET_PROPERTIES(Benchmark_MPI_FULL PROPERTIES COMPILE_FLAGS "${COMPILE_FLAGS} ${MPI_COMPILE_FLAGS} -DFULL -DMPI")
include_directories(${MPI_INCLUDE_PATH})
add_executable (Benchmark_MPI_FULL benchmark.cpp)
target_link_libraries (Benchmark_MPI_FULL ${ETHHASH_LIBS} ${MPI_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
SET_TARGET_PROPERTIES(Benchmark_MPI_FULL PROPERTIES COMPILE_FLAGS "${COMPILE_FLAGS} ${MPI_COMPILE_FLAGS} -DFULL -DMPI")
add_executable (Benchmark_MPI_LIGHT benchmark.cpp)
target_link_libraries (Benchmark_MPI_LIGHT ${ETHHASH_LIBS} ${MPI_LIBRARIES})
SET_TARGET_PROPERTIES(Benchmark_MPI_LIGHT PROPERTIES COMPILE_FLAGS "${COMPILE_FLAGS} ${MPI_COMPILE_FLAGS} -DMPI")
add_executable (Benchmark_MPI_LIGHT benchmark.cpp)
target_link_libraries (Benchmark_MPI_LIGHT ${ETHHASH_LIBS} ${MPI_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
SET_TARGET_PROPERTIES(Benchmark_MPI_LIGHT PROPERTIES COMPILE_FLAGS "${COMPILE_FLAGS} ${MPI_COMPILE_FLAGS} -DMPI")
endif()
add_executable (Benchmark_FULL benchmark.cpp)
target_link_libraries (Benchmark_FULL ${ETHHASH_LIBS})
target_link_libraries (Benchmark_FULL ${ETHHASH_LIBS} ${CMAKE_THREAD_LIBS_INIT})
SET_TARGET_PROPERTIES(Benchmark_FULL PROPERTIES COMPILE_FLAGS "${COMPILE_FLAGS} -DFULL")
add_executable (Benchmark_LIGHT benchmark.cpp)
target_link_libraries (Benchmark_LIGHT ${ETHHASH_LIBS})
target_link_libraries (Benchmark_LIGHT ${ETHHASH_LIBS} ${CMAKE_THREAD_LIBS_INIT})
if (OpenCL_FOUND)
add_executable (Benchmark_CL benchmark.cpp)
target_link_libraries (Benchmark_CL ${ETHHASH_LIBS} ethash-cl)
SET_TARGET_PROPERTIES(Benchmark_CL PROPERTIES COMPILE_FLAGS "${COMPILE_FLAGS} -DOPENCL")
add_executable (Benchmark_CL benchmark.cpp)
target_link_libraries (Benchmark_CL ${ETHHASH_LIBS} ethash-cl ${CMAKE_THREAD_LIBS_INIT})
SET_TARGET_PROPERTIES(Benchmark_CL PROPERTIES COMPILE_FLAGS "${COMPILE_FLAGS} -DOPENCL")
endif()

55
Godeps/_workspace/src/github.com/ethereum/ethash/src/benchmark/benchmark.cpp generated vendored
View File

@ -96,6 +96,11 @@ static std::string bytesToHexString(uint8_t const* bytes, unsigned size)
return str;
}
static std::string bytesToHexString(ethash_h256_t const *hash, unsigned size)
{
return bytesToHexString((uint8_t*)hash, size);
}
extern "C" int main(void)
{
// params for ethash
@ -106,8 +111,8 @@ extern "C" int main(void)
//params.full_size = 8209 * 4096; // 8MBish;
//params.cache_size = 8209*4096;
//params.cache_size = 2053*4096;
ethash_blockhash_t seed;
ethash_blockhash_t previous_hash;
ethash_h256_t seed;
ethash_h256_t previous_hash;
memcpy(&seed, hexStringToBytes("9410b944535a83d9adf6bbdcc80e051f30676173c16ca0d32d6f1263fc246466").data(), 32);
memcpy(&previous_hash, hexStringToBytes("c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470").data(), 32);
@ -126,20 +131,20 @@ extern "C" int main(void)
// compute cache or full data
{
auto startTime = high_resolution_clock::now();
ethash_mkcache(&cache, &params, seed);
ethash_mkcache(&cache, &params, &seed);
auto time = std::chrono::duration_cast<std::chrono::milliseconds>(high_resolution_clock::now() - startTime).count();
ethash_blockhash_t cache_hash;
ethash_h256_t cache_hash;
SHA3_256(&cache_hash, (uint8_t const*)cache_mem, params.cache_size);
debugf("ethash_mkcache: %ums, sha3: %s\n", (unsigned)((time*1000)/CLOCKS_PER_SEC), bytesToHexString(cache_hash,sizeof(cache_hash)).data());
debugf("ethash_mkcache: %ums, sha3: %s\n", (unsigned)((time*1000)/CLOCKS_PER_SEC), bytesToHexString(&cache_hash, sizeof(cache_hash)).data());
// print a couple of test hashes
{
auto startTime = high_resolution_clock::now();
ethash_return_value hash;
ethash_light(&hash, &cache, &params, previous_hash, 0);
ethash_light(&hash, &cache, &params, &previous_hash, 0);
auto time = std::chrono::duration_cast<std::chrono::milliseconds>(high_resolution_clock::now() - startTime).count();
debugf("ethash_light test: %ums, %s\n", (unsigned)time, bytesToHexString(hash.result, 32).data());
debugf("ethash_light test: %ums, %s\n", (unsigned)time, bytesToHexString(&hash.result, 32).data());
}
#ifdef FULL
@ -154,34 +159,34 @@ extern "C" int main(void)
ethash_cl_miner miner;
{
auto startTime = high_resolution_clock::now();
if (!miner.init(params, seed))
if (!miner.init(params, &seed))
exit(-1);
auto time = std::chrono::duration_cast<std::chrono::milliseconds>(high_resolution_clock::now() - startTime).count();
debugf("ethash_cl_miner init: %ums\n", (unsigned)time);
debugf("ethash_cl_miner init: %ums\n", (unsigned)time);
}
#endif
#ifdef FULL
{
auto startTime = high_resolution_clock::now();
{
auto startTime = high_resolution_clock::now();
ethash_return_value hash;
ethash_full(&hash, full_mem, &params, previous_hash, 0);
auto time = std::chrono::duration_cast<std::chrono::milliseconds>(high_resolution_clock::now() - startTime).count();
debugf("ethash_full test: %uns, %s\n", (unsigned)time);
}
ethash_full(&hash, full_mem, &params, &previous_hash, 0);
auto time = std::chrono::duration_cast<std::chrono::milliseconds>(high_resolution_clock::now() - startTime).count();
debugf("ethash_full test: %uns\n", (unsigned)time);
}
#endif
#ifdef OPENCL
// validate 1024 hashes against CPU
miner.hash(g_hashes, previous_hash, 0, 1024);
miner.hash(g_hashes, (uint8_t*)&previous_hash, 0, 1024);
for (unsigned i = 0; i != 1024; ++i)
{
ethash_return_value hash;
ethash_light(&hash, &cache, &params, previous_hash, i);
if (memcmp(hash.result, g_hashes + 32*i, 32) != 0)
ethash_light(&hash, &cache, &params, &previous_hash, i);
if (memcmp(&hash.result, g_hashes + 32*i, 32) != 0)
{
debugf("nonce %u failed: %s %s\n", i, bytesToHexString(g_hashes + 32*i, 32).c_str(), bytesToHexString(hash.result, 32).c_str());
debugf("nonce %u failed: %s %s\n", i, bytesToHexString(g_hashes + 32*i, 32).c_str(), bytesToHexString(&hash.result, 32).c_str());
static unsigned c = 0;
if (++c == 16)
{
@ -220,14 +225,14 @@ extern "C" int main(void)
search_hook hook;
hook.hash_count = 0;
miner.search(previous_hash, 0x000000ffffffffff, hook);
miner.search((uint8_t*)&previous_hash, 0x000000ffffffffff, hook);
for (unsigned i = 0; i != hook.nonce_vec.size(); ++i)
{
uint64_t nonce = hook.nonce_vec[i];
ethash_return_value hash;
ethash_light(&hash, &cache, &params, previous_hash, nonce);
debugf("found: %.8x%.8x -> %s\n", unsigned(nonce>>32), unsigned(nonce), bytesToHexString(hash.result, 32).c_str());
ethash_light(&hash, &cache, &params, &previous_hash, nonce);
debugf("found: %.8x%.8x -> %s\n", unsigned(nonce>>32), unsigned(nonce), bytesToHexString(&hash.result, 32).c_str());
}
hash_count = hook.hash_count;
@ -239,9 +244,9 @@ extern "C" int main(void)
{
ethash_return_value hash;
#ifdef FULL
ethash_full(&hash, full_mem, &params, previous_hash, nonce);
ethash_full(&hash, full_mem, &params, &previous_hash, nonce);
#else
ethash_light(&hash, &cache, &params, previous_hash, nonce);
ethash_light(&hash, &cache, &params, &previous_hash, nonce);
#endif // FULL
}
}
@ -249,7 +254,7 @@ extern "C" int main(void)
auto time = std::chrono::duration_cast<std::chrono::microseconds>(high_resolution_clock::now() - startTime).count();
debugf("Search took: %ums\n", (unsigned)time/1000);
unsigned read_size = ACCESSES * MIX_BYTES;
unsigned read_size = ETHASH_ACCESSES * ETHASH_MIX_BYTES;
#if defined(OPENCL) || defined(FULL)
debugf(
"hashrate: %8.2f Mh/s, bw: %8.2f GB/s\n",

2
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash-cl/CMakeLists.txt generated vendored
View File

@ -13,7 +13,7 @@ if (NOT MSVC)
set(CMAKE_CXX_FLAGS "-Wall -std=c++11")
set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g")
set(CMAKE_CXX_FLAGS_MINSIZEREL "-Os -DNDEBUG")
set(CMAKE_CXX_FLAGS_RELEASE "-O4 -DNDEBUG")
set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -g")
# Compiler-specific C++11 activation.

141
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash-cl/ethash_cl_miner.cpp generated vendored
View File

@ -24,12 +24,15 @@
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <assert.h>
#include <queue>
#include <vector>
#include <libethash/util.h>
#include <libethash/ethash.h>
#include <libethash/internal.h>
#include "ethash_cl_miner.h"
#include "ethash_cl_miner_kernel.h"
#include <libethash/util.h>
#define ETHASH_BYTES 32
@ -42,6 +45,8 @@
#undef min
#undef max
using namespace std;
static void add_definition(std::string& source, char const* id, unsigned value)
{
char buf[256];
@ -49,52 +54,108 @@ static void add_definition(std::string& source, char const* id, unsigned value)
source.insert(source.begin(), buf, buf + strlen(buf));
}
ethash_cl_miner::search_hook::~search_hook() {}
ethash_cl_miner::ethash_cl_miner()
: m_opencl_1_1()
{
}
bool ethash_cl_miner::init(ethash_params const& params, ethash_blockhash_t const *seed, unsigned workgroup_size)
std::string ethash_cl_miner::platform_info(unsigned _platformId, unsigned _deviceId)
{
// store params
m_params = params;
// get all platforms
std::vector<cl::Platform> platforms;
cl::Platform::get(&platforms);
std::vector<cl::Platform> platforms;
cl::Platform::get(&platforms);
if (platforms.empty())
{
debugf("No OpenCL platforms found.\n");
return false;
cout << "No OpenCL platforms found." << endl;
return std::string();
}
// use default platform
debugf("Using platform: %s\n", platforms[0].getInfo<CL_PLATFORM_NAME>().c_str());
// get GPU device of the default platform
std::vector<cl::Device> devices;
platforms[0].getDevices(CL_DEVICE_TYPE_ALL, &devices);
if (devices.empty())
// get GPU device of the selected platform
std::vector<cl::Device> devices;
unsigned platform_num = std::min<unsigned>(_platformId, platforms.size() - 1);
platforms[platform_num].getDevices(CL_DEVICE_TYPE_ALL, &devices);
if (devices.empty())
{
debugf("No OpenCL devices found.\n");
return false;
cout << "No OpenCL devices found." << endl;
return std::string();
}
// use default device
unsigned device_num = 0;
// use selected default device
unsigned device_num = std::min<unsigned>(_deviceId, devices.size() - 1);
cl::Device& device = devices[device_num];
std::string device_version = device.getInfo<CL_DEVICE_VERSION>();
debugf("Using device: %s (%s)\n", device.getInfo<CL_DEVICE_NAME>().c_str(),device_version.c_str());
return "{ \"platform\": \"" + platforms[platform_num].getInfo<CL_PLATFORM_NAME>() + "\", \"device\": \"" + device.getInfo<CL_DEVICE_NAME>() + "\", \"version\": \"" + device_version + "\" }";
}
unsigned ethash_cl_miner::get_num_devices(unsigned _platformId)
{
std::vector<cl::Platform> platforms;
cl::Platform::get(&platforms);
if (platforms.empty())
{
cout << "No OpenCL platforms found." << endl;
return 0;
}
std::vector<cl::Device> devices;
unsigned platform_num = std::min<unsigned>(_platformId, platforms.size() - 1);
platforms[platform_num].getDevices(CL_DEVICE_TYPE_ALL, &devices);
if (devices.empty())
{
cout << "No OpenCL devices found." << endl;
return 0;
}
return devices.size();
}
void ethash_cl_miner::finish()
{
if (m_queue())
m_queue.finish();
}
bool ethash_cl_miner::init(uint64_t block_number, std::function<void(void*)> _fillDAG, unsigned workgroup_size, unsigned _platformId, unsigned _deviceId)
{
// store params
m_fullSize = ethash_get_datasize(block_number);
// get all platforms
std::vector<cl::Platform> platforms;
cl::Platform::get(&platforms);
if (platforms.empty())
{
cout << "No OpenCL platforms found." << endl;
return false;
}
// use selected platform
_platformId = std::min<unsigned>(_platformId, platforms.size() - 1);
cout << "Using platform: " << platforms[_platformId].getInfo<CL_PLATFORM_NAME>().c_str() << endl;
// get GPU device of the default platform
std::vector<cl::Device> devices;
platforms[_platformId].getDevices(CL_DEVICE_TYPE_ALL, &devices);
if (devices.empty())
{
cout << "No OpenCL devices found." << endl;
return false;
}
// use selected device
cl::Device& device = devices[std::min<unsigned>(_deviceId, devices.size() - 1)];
std::string device_version = device.getInfo<CL_DEVICE_VERSION>();
cout << "Using device: " << device.getInfo<CL_DEVICE_NAME>().c_str() << "(" << device_version.c_str() << ")" << endl;
if (strncmp("OpenCL 1.0", device_version.c_str(), 10) == 0)
{
debugf("OpenCL 1.0 is not supported.\n");
cout << "OpenCL 1.0 is not supported." << endl;
return false;
}
if (strncmp("OpenCL 1.1", device_version.c_str(), 10) == 0)
{
m_opencl_1_1 = true;
}
// create context
m_context = cl::Context(std::vector<cl::Device>(&device, &device + 1));
@ -106,8 +167,8 @@ bool ethash_cl_miner::init(ethash_params const& params, ethash_blockhash_t const
// patch source code
std::string code(ETHASH_CL_MINER_KERNEL, ETHASH_CL_MINER_KERNEL + ETHASH_CL_MINER_KERNEL_SIZE);
add_definition(code, "GROUP_SIZE", m_workgroup_size);
add_definition(code, "DAG_SIZE", (unsigned)(params.full_size / MIX_BYTES));
add_definition(code, "ACCESSES", ACCESSES);
add_definition(code, "DAG_SIZE", (unsigned)(m_fullSize / ETHASH_MIX_BYTES));
add_definition(code, "ACCESSES", ETHASH_ACCESSES);
add_definition(code, "MAX_OUTPUTS", c_max_search_results);
//debugf("%s", code.c_str());
@ -122,31 +183,25 @@ bool ethash_cl_miner::init(ethash_params const& params, ethash_blockhash_t const
}
catch (cl::Error err)
{
debugf("%s\n", program.getBuildInfo<CL_PROGRAM_BUILD_LOG>(device).c_str());
cout << program.getBuildInfo<CL_PROGRAM_BUILD_LOG>(device).c_str();
return false;
}
m_hash_kernel = cl::Kernel(program, "ethash_hash");
m_search_kernel = cl::Kernel(program, "ethash_search");
// create buffer for dag
m_dag = cl::Buffer(m_context, CL_MEM_READ_ONLY, params.full_size);
m_dag = cl::Buffer(m_context, CL_MEM_READ_ONLY, m_fullSize);
// create buffer for header
m_header = cl::Buffer(m_context, CL_MEM_READ_ONLY, 32);
// compute dag on CPU
{
void* cache_mem = malloc(params.cache_size + 63);
ethash_cache cache;
cache.mem = (void*)(((uintptr_t)cache_mem + 63) & ~63);
ethash_mkcache(&cache, &params, seed);
// if this throws then it's because we probably need to subdivide the dag uploads for compatibility
void* dag_ptr = m_queue.enqueueMapBuffer(m_dag, true, m_opencl_1_1 ? CL_MAP_WRITE : CL_MAP_WRITE_INVALIDATE_REGION, 0, params.full_size);
ethash_compute_full_data(dag_ptr, &params, &cache);
void* dag_ptr = m_queue.enqueueMapBuffer(m_dag, true, m_opencl_1_1 ? CL_MAP_WRITE : CL_MAP_WRITE_INVALIDATE_REGION, 0, m_fullSize);
// memcpying 1GB: horrible... really. horrible. but necessary since we can't mmap *and* gpumap.
_fillDAG(dag_ptr);
m_queue.enqueueUnmapMemObject(m_dag, dag_ptr);
free(cache_mem);
}
// create mining buffers
@ -191,8 +246,8 @@ void ethash_cl_miner::hash(uint8_t* ret, uint8_t const* header, uint64_t nonce,
// how many this batch
if (i < count)
{
unsigned const this_count = std::min(count - i, c_hash_batch_size);
unsigned const batch_count = std::max(this_count, m_workgroup_size);
unsigned const this_count = std::min<unsigned>(count - i, c_hash_batch_size);
unsigned const batch_count = std::max<unsigned>(this_count, m_workgroup_size);
// supply output hash buffer to kernel
m_hash_kernel.setArg(0, m_hash_buf[buf]);
@ -245,7 +300,7 @@ void ethash_cl_miner::search(uint8_t const* header, uint64_t target, search_hook
m_queue.enqueueWriteBuffer(m_search_buf[i], false, 0, 4, &c_zero);
}
#if CL_VERSION_1_2
#if CL_VERSION_1_2 && 0
cl::Event pre_return_event;
if (!m_opencl_1_1)
{
@ -295,7 +350,7 @@ void ethash_cl_miner::search(uint8_t const* header, uint64_t target, search_hook
// could use pinned host pointer instead
uint32_t* results = (uint32_t*)m_queue.enqueueMapBuffer(m_search_buf[batch.buf], true, CL_MAP_READ, 0, (1+c_max_search_results) * sizeof(uint32_t));
unsigned num_found = std::min(results[0], c_max_search_results);
unsigned num_found = std::min<unsigned>(results[0], c_max_search_results);
uint64_t nonces[c_max_search_results];
for (unsigned i = 0; i != num_found; ++i)
@ -319,7 +374,7 @@ void ethash_cl_miner::search(uint8_t const* header, uint64_t target, search_hook
}
// not safe to return until this is ready
#if CL_VERSION_1_2
#if CL_VERSION_1_2 && 0
if (!m_opencl_1_1)
{
pre_return_event.wait();

24
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash-cl/ethash_cl_miner.h generated vendored
View File

@ -2,8 +2,18 @@
#define __CL_ENABLE_EXCEPTIONS
#define CL_USE_DEPRECATED_OPENCL_2_0_APIS
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunused-parameter"
#include "cl.hpp"
#pragma clang diagnostic pop
#else
#include "cl.hpp"
#endif
#include <time.h>
#include <functional>
#include <libethash/ethash.h>
class ethash_cl_miner
@ -11,6 +21,8 @@ class ethash_cl_miner
public:
struct search_hook
{
virtual ~search_hook(); // always a virtual destructor for a class with virtuals.
// reports progress, return true to abort
virtual bool found(uint64_t const* nonces, uint32_t count) = 0;
virtual bool searched(uint64_t start_nonce, uint32_t count) = 0;
@ -19,19 +31,19 @@ public:
public:
ethash_cl_miner();
bool init(ethash_params const& params, ethash_blockhash_t const *seed, unsigned workgroup_size = 64);
bool init(uint64_t block_number, std::function<void(void*)> _fillDAG, unsigned workgroup_size = 64, unsigned _platformId = 0, unsigned _deviceId = 0);
static std::string platform_info(unsigned _platformId = 0, unsigned _deviceId = 0);
static unsigned get_num_devices(unsigned _platformId = 0);
void finish();
void hash(uint8_t* ret, uint8_t const* header, uint64_t nonce, unsigned count);
void search(uint8_t const* header, uint64_t target, search_hook& hook);
private:
static unsigned const c_max_search_results = 63;
static unsigned const c_num_buffers = 2;
static unsigned const c_hash_batch_size = 1024;
static unsigned const c_search_batch_size = 1024*256;
enum { c_max_search_results = 63, c_num_buffers = 2, c_hash_batch_size = 1024, c_search_batch_size = 1024*256 };
ethash_params m_params;
uint64_t m_fullSize;
cl::Context m_context;
cl::CommandQueue m_queue;
cl::Kernel m_hash_kernel;

5
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash-cl/ethash_cl_miner_kernel.cl generated vendored
View File

@ -415,8 +415,7 @@ __kernel void ethash_search_simple(
{
uint const gid = get_global_id(0);
hash32_t hash = compute_hash_simple(g_header, g_dag, start_nonce + gid, isolate);
if (hash.ulongs[countof(hash.ulongs)-1] < target)
if (as_ulong(as_uchar8(hash.ulongs[0]).s76543210) < target)
{
uint slot = min(MAX_OUTPUTS, atomic_inc(&g_output[0]) + 1);
g_output[slot] = gid;
@ -453,7 +452,7 @@ __kernel void ethash_search(
uint const gid = get_global_id(0);
hash32_t hash = compute_hash(share, g_header, g_dag, start_nonce + gid, isolate);
if (hash.ulongs[countof(hash.ulongs)-1] < target)
if (as_ulong(as_uchar8(hash.ulongs[0]).s76543210) < target)
{
uint slot = min(MAX_OUTPUTS, atomic_inc(&g_output[0]) + 1);
g_output[slot] = gid;

5
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/CMakeLists.txt generated vendored
View File

@ -10,8 +10,7 @@ if (NOT MSVC)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
endif()
set(FILES util.c
util.h
set(FILES util.h
io.c
internal.c
ethash.h
@ -21,7 +20,7 @@ set(FILES util.c
data_sizes.h)
if (MSVC)
list(APPEND FILES io_win32.c)
list(APPEND FILES util_win32.c io_win32.c mmap_win32.c)
else()
list(APPEND FILES io_posix.c)
endif()

1474
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/data_sizes.h generated vendored
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File diff suppressed because it is too large Load Diff

72
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/endian.h generated vendored
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@ -3,38 +3,6 @@
#include <stdint.h>
#include "compiler.h"
static const uint8_t BitReverseTable256[] =
{
0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
};
static inline uint32_t bitfn_swap32(uint32_t a) {
return (BitReverseTable256[a & 0xff] << 24) |
(BitReverseTable256[(a >> 8) & 0xff] << 16) |
(BitReverseTable256[(a >> 16) & 0xff] << 8) |
(BitReverseTable256[(a >> 24) & 0xff]);
}
static inline uint64_t bitfn_swap64(uint64_t a) {
return ((uint64_t) bitfn_swap32((uint32_t) (a >> 32))) |
(((uint64_t) bitfn_swap32((uint32_t) a)) << 32);
}
#if defined(__MINGW32__) || defined(_WIN32)
# define LITTLE_ENDIAN 1234
# define BYTE_ORDER LITTLE_ENDIAN
@ -53,21 +21,51 @@ static inline uint64_t bitfn_swap64(uint64_t a) {
# define BIG_ENDIAN 1234
# define BYTE_ORDER BIG_ENDIAN
#else
# include <endian.h>
#endif
#if defined(_WIN32)
#include <stdlib.h>
#define ethash_swap_u32(input_) _byteswap_ulong(input_)
#define ethash_swap_u64(input_) _byteswap_uint64(input_)
#elif defined(__APPLE__)
#include <libkern/OSByteOrder.h>
#define ethash_swap_u32(input_) OSSwapInt32(input_)
#define ethash_swap_u64(input_) OSSwapInt64(input_)
#else // posix
#include <byteswap.h>
#define ethash_swap_u32(input_) __bswap_32(input_)
#define ethash_swap_u64(input_) __bswap_64(input_)
#endif
#if LITTLE_ENDIAN == BYTE_ORDER
#define fix_endian32(x) (x)
#define fix_endian64(x) (x)
#define fix_endian32(dst_ ,src_) dst_ = src_
#define fix_endian32_same(val_)
#define fix_endian64(dst_, src_) dst_ = src_
#define fix_endian64_same(val_)
#define fix_endian_arr32(arr_, size_)
#define fix_endian_arr64(arr_, size_)
#elif BIG_ENDIAN == BYTE_ORDER
#define fix_endian32(x) bitfn_swap32(x)
#define fix_endian64(x) bitfn_swap64(x)
#define fix_endian32(dst_, src_) dst_ = ethash_swap_u32(src_)
#define fix_endian32_same(val_) val_ = ethash_swap_u32(val_)
#define fix_endian64(dst_, src_) dst_ = ethash_swap_u64(src_
#define fix_endian64_same(val_) val_ = ethash_swap_u64(val_)
#define fix_endian_arr32(arr_, size_) \
do { \
for (unsigned i_ = 0; i_ < (size_), ++i_) { \
arr_[i_] = ethash_swap_u32(arr_[i_]); \
} \
while (0)
#define fix_endian_arr64(arr_, size_) \
do { \
for (unsigned i_ = 0; i_ < (size_), ++i_) { \
arr_[i_] = ethash_swap_u64(arr_[i_]); \
} \
while (0) \
#else
# error "endian not supported"

207
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/ethash.h generated vendored
View File

@ -26,124 +26,121 @@
#include <stddef.h>
#include "compiler.h"
#define REVISION 23
#define DATASET_BYTES_INIT 1073741824U // 2**30
#define DATASET_BYTES_GROWTH 8388608U // 2**23
#define CACHE_BYTES_INIT 1073741824U // 2**24
#define CACHE_BYTES_GROWTH 131072U // 2**17
#define EPOCH_LENGTH 30000U
#define MIX_BYTES 128
#define HASH_BYTES 64
#define DATASET_PARENTS 256
#define CACHE_ROUNDS 3
#define ACCESSES 64
#define ETHASH_REVISION 23
#define ETHASH_DATASET_BYTES_INIT 1073741824U // 2**30
#define ETHASH_DATASET_BYTES_GROWTH 8388608U // 2**23
#define ETHASH_CACHE_BYTES_INIT 1073741824U // 2**24
#define ETHASH_CACHE_BYTES_GROWTH 131072U // 2**17
#define ETHASH_EPOCH_LENGTH 30000U
#define ETHASH_MIX_BYTES 128
#define ETHASH_HASH_BYTES 64
#define ETHASH_DATASET_PARENTS 256
#define ETHASH_CACHE_ROUNDS 3
#define ETHASH_ACCESSES 64
#define ETHASH_DAG_MAGIC_NUM_SIZE 8
#define ETHASH_DAG_MAGIC_NUM 0xFEE1DEADBADDCAFE
#ifdef __cplusplus
extern "C" {
#endif
typedef struct ethash_params {
uint64_t full_size; // Size of full data set (in bytes, multiple of mix size (128)).
uint64_t cache_size; // Size of compute cache (in bytes, multiple of node size (64)).
} ethash_params;
/// Type of a seedhash/blockhash e.t.c.
typedef struct ethash_h256 { uint8_t b[32]; } ethash_h256_t;
/// Type of a blockhash
typedef struct ethash_blockhash { uint8_t b[32]; } ethash_blockhash_t;
static inline uint8_t ethash_blockhash_get(ethash_blockhash_t const* hash, unsigned int i)
{
return hash->b[i];
}
// convenience macro to statically initialize an h256_t
// usage:
// ethash_h256_t a = ethash_h256_static_init(1, 2, 3, ... )
// have to provide all 32 values. If you don't provide all the rest
// will simply be unitialized (not guranteed to be 0)
#define ethash_h256_static_init(...) \
{ {__VA_ARGS__} }
static inline void ethash_blockhash_set(ethash_blockhash_t *hash, unsigned int i, uint8_t v)
{
hash->b[i] = v;
}
static inline void ethash_blockhash_reset(ethash_blockhash_t *hash)
{
memset(hash, 0, 32);
}
struct ethash_light;
typedef struct ethash_light* ethash_light_t;
struct ethash_full;
typedef struct ethash_full* ethash_full_t;
typedef int(*ethash_callback_t)(unsigned);
typedef struct ethash_return_value {
ethash_blockhash_t result;
ethash_blockhash_t mix_hash;
} ethash_return_value;
ethash_h256_t result;
ethash_h256_t mix_hash;
bool success;
} ethash_return_value_t;
uint64_t ethash_get_datasize(const uint32_t block_number);
uint64_t ethash_get_cachesize(const uint32_t block_number);
/**
* Allocate and initialize a new ethash_light handler
*
* @param block_number The block number for which to create the handler
* @return Newly allocated ethash_light handler or NULL in case of
* ERRNOMEM or invalid parameters used for @ref ethash_compute_cache_nodes()
*/
ethash_light_t ethash_light_new(uint64_t block_number);
/**
* Frees a previously allocated ethash_light handler
* @param light The light handler to free
*/
void ethash_light_delete(ethash_light_t light);
/**
* Calculate the light client data
*
* @param light The light client handler
* @param header_hash The header hash to pack into the mix
* @param nonce The nonce to pack into the mix
* @return an object of ethash_return_value_t holding the return values
*/
ethash_return_value_t ethash_light_compute(
ethash_light_t light,
ethash_h256_t const header_hash,
uint64_t nonce
);
// initialize the parameters
static inline void ethash_params_init(ethash_params *params, const uint32_t block_number) {
params->full_size = ethash_get_datasize(block_number);
params->cache_size = ethash_get_cachesize(block_number);
}
/**
* Allocate and initialize a new ethash_full handler
*
* @param light The light handler containing the cache.
* @param callback A callback function with signature of @ref ethash_callback_t
* It accepts an unsigned with which a progress of DAG calculation
* can be displayed. If all goes well the callback should return 0.
* If a non-zero value is returned then DAG generation will stop.
* Be advised. A progress value of 100 means that DAG creation is
* almost complete and that this function will soon return succesfully.
* It does not mean that the function has already had a succesfull return.
* @return Newly allocated ethash_full handler or NULL in case of
* ERRNOMEM or invalid parameters used for @ref ethash_compute_full_data()
*/
ethash_full_t ethash_full_new(ethash_light_t light, ethash_callback_t callback);
typedef struct ethash_cache {
void *mem;
} ethash_cache;
/**
* Frees a previously allocated ethash_full handler
* @param full The light handler to free
*/
void ethash_full_delete(ethash_full_t full);
/**
* Calculate the full client data
*
* @param full The full client handler
* @param header_hash The header hash to pack into the mix
* @param nonce The nonce to pack into the mix
* @return An object of ethash_return_value to hold the return value
*/
ethash_return_value_t ethash_full_compute(
ethash_full_t full,
ethash_h256_t const header_hash,
uint64_t nonce
);
/**
* Get a pointer to the full DAG data
*/
void const* ethash_full_dag(ethash_full_t full);
/**
* Get the size of the DAG data
*/
uint64_t ethash_full_dag_size(ethash_full_t full);
void ethash_mkcache(ethash_cache *cache, ethash_params const *params, ethash_blockhash_t const *seed);
void ethash_compute_full_data(void *mem, ethash_params const *params, ethash_cache const *cache);
void ethash_full(ethash_return_value *ret,
void const *full_mem,
ethash_params const *params,
ethash_blockhash_t const *header_hash,
const uint64_t nonce);
void ethash_light(ethash_return_value *ret,
ethash_cache const *cache,
ethash_params const *params,
ethash_blockhash_t const *header_hash,
const uint64_t nonce);
void ethash_get_seedhash(ethash_blockhash_t *seedhash, const uint32_t block_number);
static inline void ethash_prep_light(void *cache, ethash_params const *params, ethash_blockhash_t const* seed)
{
ethash_cache c;
c.mem = cache;
ethash_mkcache(&c, params, seed);
}
static inline void ethash_compute_light(ethash_return_value *ret, void const *cache, ethash_params const *params, ethash_blockhash_t const *header_hash, const uint64_t nonce)
{
ethash_cache c;
c.mem = (void *) cache;
ethash_light(ret, &c, params, header_hash, nonce);
}
static inline void ethash_prep_full(void *full, ethash_params const *params, void const *cache)
{
ethash_cache c;
c.mem = (void *) cache;
ethash_compute_full_data(full, params, &c);
}
static inline void ethash_compute_full(ethash_return_value *ret,
void const *full,
ethash_params const *params,
ethash_blockhash_t const *header_hash,
const uint64_t nonce)
{
ethash_full(ret, full, params, header_hash, nonce);
}
// Returns if hash is less than or equal to difficulty
static inline int ethash_check_difficulty(ethash_blockhash_t const *hash,
ethash_blockhash_t const *difficulty)
{
// Difficulty is big endian
for (int i = 0; i < 32; i++) {
if (ethash_blockhash_get(hash, i) == ethash_blockhash_get(difficulty, i)) {
continue;
}
return ethash_blockhash_get(hash, i) < ethash_blockhash_get(difficulty, i);
}
return 1;
}
int ethash_quick_check_difficulty(ethash_blockhash_t const *header_hash,
const uint64_t nonce,
ethash_blockhash_t const *mix_hash,
ethash_blockhash_t const *difficulty);
/**
* Calculate the seedhash for a given block number
*/
ethash_h256_t ethash_get_seedhash(uint64_t block_number);
#ifdef __cplusplus
}

5
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/fnv.h generated vendored
View File

@ -29,8 +29,9 @@ extern "C" {
#define FNV_PRIME 0x01000193
static inline uint32_t fnv_hash(const uint32_t x, const uint32_t y) {
return x*FNV_PRIME ^ y;
static inline uint32_t fnv_hash(uint32_t const x, uint32_t const y)
{
return x * FNV_PRIME ^ y;
}
#ifdef __cplusplus

644
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.c generated vendored
View File

@ -8,11 +8,11 @@
ethash is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file internal.c
* @author Tim Hughes <tim@twistedfury.com>
@ -23,11 +23,15 @@
#include <assert.h>
#include <inttypes.h>
#include <stddef.h>
#include <errno.h>
#include <math.h>
#include "mmap.h"
#include "ethash.h"
#include "fnv.h"
#include "endian.h"
#include "internal.h"
#include "data_sizes.h"
#include "io.h"
#ifdef WITH_CRYPTOPP
@ -37,274 +41,456 @@
#include "sha3.h"
#endif // WITH_CRYPTOPP
uint64_t ethash_get_datasize(const uint32_t block_number) {
assert(block_number / EPOCH_LENGTH < 2048);
return dag_sizes[block_number / EPOCH_LENGTH];
uint64_t ethash_get_datasize(uint64_t const block_number)
{
assert(block_number / ETHASH_EPOCH_LENGTH < 2048);
return dag_sizes[block_number / ETHASH_EPOCH_LENGTH];
}
uint64_t ethash_get_cachesize(const uint32_t block_number) {
assert(block_number / EPOCH_LENGTH < 2048);
return cache_sizes[block_number / EPOCH_LENGTH];
uint64_t ethash_get_cachesize(uint64_t const block_number)
{
assert(block_number / ETHASH_EPOCH_LENGTH < 2048);
return cache_sizes[block_number / ETHASH_EPOCH_LENGTH];
}
// Follows Sergio's "STRICT MEMORY HARD HASHING FUNCTIONS" (2014)
// https://bitslog.files.wordpress.com/2013/12/memohash-v0-3.pdf
// SeqMemoHash(s, R, N)
void static ethash_compute_cache_nodes(node *const nodes,
ethash_params const *params,
ethash_blockhash_t const* seed)
bool static ethash_compute_cache_nodes(
node* const nodes,
uint64_t cache_size,
ethash_h256_t const* seed
)
{
assert((params->cache_size % sizeof(node)) == 0);
uint32_t const num_nodes = (uint32_t) (params->cache_size / sizeof(node));
if (cache_size % sizeof(node) != 0) {
return false;
}
uint32_t const num_nodes = (uint32_t) (cache_size / sizeof(node));
SHA3_512(nodes[0].bytes, (uint8_t*)seed, 32);
SHA3_512(nodes[0].bytes, (uint8_t*)seed, 32);
for (unsigned i = 1; i != num_nodes; ++i) {
SHA3_512(nodes[i].bytes, nodes[i - 1].bytes, 64);
}
for (uint32_t i = 1; i != num_nodes; ++i) {
SHA3_512(nodes[i].bytes, nodes[i - 1].bytes, 64);
}
for (unsigned j = 0; j != CACHE_ROUNDS; j++) {
for (unsigned i = 0; i != num_nodes; i++) {
uint32_t const idx = nodes[i].words[0] % num_nodes;
node data;
data = nodes[(num_nodes - 1 + i) % num_nodes];
for (unsigned w = 0; w != NODE_WORDS; ++w) {
data.words[w] ^= nodes[idx].words[w];
}
SHA3_512(nodes[i].bytes, data.bytes, sizeof(data));
}
}
for (uint32_t j = 0; j != ETHASH_CACHE_ROUNDS; j++) {
for (uint32_t i = 0; i != num_nodes; i++) {
uint32_t const idx = nodes[i].words[0] % num_nodes;
node data;
data = nodes[(num_nodes - 1 + i) % num_nodes];
for (uint32_t w = 0; w != NODE_WORDS; ++w) {
data.words[w] ^= nodes[idx].words[w];
}
SHA3_512(nodes[i].bytes, data.bytes, sizeof(data));
}
}
// now perform endian conversion
#if BYTE_ORDER != LITTLE_ENDIAN
for (unsigned w = 0; w != (num_nodes*NODE_WORDS); ++w)
{
nodes->words[w] = fix_endian32(nodes->words[w]);
}
// now perform endian conversion
fix_endian_arr32(nodes->words, num_nodes * NODE_WORDS);
return true;
}
void ethash_calculate_dag_item(
node* const ret,
uint32_t node_index,
ethash_light_t const light
)
{
uint32_t num_parent_nodes = (uint32_t) (light->cache_size / sizeof(node));
node const* cache_nodes = (node const *) light->cache;
node const* init = &cache_nodes[node_index % num_parent_nodes];
memcpy(ret, init, sizeof(node));
ret->words[0] ^= node_index;
SHA3_512(ret->bytes, ret->bytes, sizeof(node));
#if defined(_M_X64) && ENABLE_SSE
__m128i const fnv_prime = _mm_set1_epi32(FNV_PRIME);
__m128i xmm0 = ret->xmm[0];
__m128i xmm1 = ret->xmm[1];
__m128i xmm2 = ret->xmm[2];
__m128i xmm3 = ret->xmm[3];
#endif
}
void ethash_mkcache(ethash_cache *cache,
ethash_params const *params,
ethash_blockhash_t const* seed)
{
node *nodes = (node *) cache->mem;
ethash_compute_cache_nodes(nodes, params, seed);
}
void ethash_calculate_dag_item(node *const ret,
const unsigned node_index,
const struct ethash_params *params,
const struct ethash_cache *cache)
{
uint32_t num_parent_nodes = (uint32_t) (params->cache_size / sizeof(node));
node const *cache_nodes = (node const *) cache->mem;
node const *init = &cache_nodes[node_index % num_parent_nodes];
memcpy(ret, init, sizeof(node));
ret->words[0] ^= node_index;
SHA3_512(ret->bytes, ret->bytes, sizeof(node));
for (uint32_t i = 0; i != ETHASH_DATASET_PARENTS; ++i) {
uint32_t parent_index = fnv_hash(node_index ^ i, ret->words[i % NODE_WORDS]) % num_parent_nodes;
node const *parent = &cache_nodes[parent_index];
#if defined(_M_X64) && ENABLE_SSE
__m128i const fnv_prime = _mm_set1_epi32(FNV_PRIME);
__m128i xmm0 = ret->xmm[0];
__m128i xmm1 = ret->xmm[1];
__m128i xmm2 = ret->xmm[2];
__m128i xmm3 = ret->xmm[3];
#endif
{
xmm0 = _mm_mullo_epi32(xmm0, fnv_prime);
xmm1 = _mm_mullo_epi32(xmm1, fnv_prime);
xmm2 = _mm_mullo_epi32(xmm2, fnv_prime);
xmm3 = _mm_mullo_epi32(xmm3, fnv_prime);
xmm0 = _mm_xor_si128(xmm0, parent->xmm[0]);
xmm1 = _mm_xor_si128(xmm1, parent->xmm[1]);
xmm2 = _mm_xor_si128(xmm2, parent->xmm[2]);
xmm3 = _mm_xor_si128(xmm3, parent->xmm[3]);
for (unsigned i = 0; i != DATASET_PARENTS; ++i) {
uint32_t parent_index = ((node_index ^ i) * FNV_PRIME ^ ret->words[i % NODE_WORDS]) % num_parent_nodes;
node const *parent = &cache_nodes[parent_index];
// have to write to ret as values are used to compute index
ret->xmm[0] = xmm0;
ret->xmm[1] = xmm1;
ret->xmm[2] = xmm2;
ret->xmm[3] = xmm3;
}
#else
{
for (unsigned w = 0; w != NODE_WORDS; ++w) {
ret->words[w] = fnv_hash(ret->words[w], parent->words[w]);
}
}
#endif
}
SHA3_512(ret->bytes, ret->bytes, sizeof(node));
}
bool ethash_compute_full_data(
void* mem,
uint64_t full_size,
ethash_light_t const light,
ethash_callback_t callback
)
{
if (full_size % (sizeof(uint32_t) * MIX_WORDS) != 0 ||
(full_size % sizeof(node)) != 0) {
return false;
}
uint32_t const max_n = (uint32_t)(full_size / sizeof(node));
node* full_nodes = mem;
double const progress_change = 1.0f / max_n;
double progress = 0.0f;
// now compute full nodes
for (uint32_t n = 0; n != max_n; ++n) {
if (callback &&
n % (max_n / 100) == 0 &&
callback((unsigned int)(ceil(progress * 100.0f))) != 0) {
return false;
}
progress += progress_change;
ethash_calculate_dag_item(&(full_nodes[n]), n, light);
}
return true;
}
static bool ethash_hash(
ethash_return_value_t* ret,
node const* full_nodes,
ethash_light_t const light,
uint64_t full_size,
ethash_h256_t const header_hash,
uint64_t const nonce
)
{
if (full_size % MIX_WORDS != 0) {
return false;
}
// pack hash and nonce together into first 40 bytes of s_mix
assert(sizeof(node) * 8 == 512);
node s_mix[MIX_NODES + 1];
memcpy(s_mix[0].bytes, &header_hash, 32);
fix_endian64(s_mix[0].double_words[4], nonce);
// compute sha3-512 hash and replicate across mix
SHA3_512(s_mix->bytes, s_mix->bytes, 40);
fix_endian_arr32(s_mix[0].words, 16);
node* const mix = s_mix + 1;
for (uint32_t w = 0; w != MIX_WORDS; ++w) {
mix->words[w] = s_mix[0].words[w % NODE_WORDS];
}
unsigned const page_size = sizeof(uint32_t) * MIX_WORDS;
unsigned const num_full_pages = (unsigned) (full_size / page_size);
for (unsigned i = 0; i != ETHASH_ACCESSES; ++i) {
uint32_t const index = fnv_hash(s_mix->words[0] ^ i, mix->words[i % MIX_WORDS]) % num_full_pages;
for (unsigned n = 0; n != MIX_NODES; ++n) {
node const* dag_node;
if (full_nodes) {
dag_node = &full_nodes[MIX_NODES * index + n];
} else {
node tmp_node;
ethash_calculate_dag_item(&tmp_node, index * MIX_NODES + n, light);
dag_node = &tmp_node;
}
#if defined(_M_X64) && ENABLE_SSE
{
xmm0 = _mm_mullo_epi32(xmm0, fnv_prime);
xmm1 = _mm_mullo_epi32(xmm1, fnv_prime);
xmm2 = _mm_mullo_epi32(xmm2, fnv_prime);
xmm3 = _mm_mullo_epi32(xmm3, fnv_prime);
xmm0 = _mm_xor_si128(xmm0, parent->xmm[0]);
xmm1 = _mm_xor_si128(xmm1, parent->xmm[1]);
xmm2 = _mm_xor_si128(xmm2, parent->xmm[2]);
xmm3 = _mm_xor_si128(xmm3, parent->xmm[3]);
// have to write to ret as values are used to compute index
ret->xmm[0] = xmm0;
ret->xmm[1] = xmm1;
ret->xmm[2] = xmm2;
ret->xmm[3] = xmm3;
}
#else
{
for (unsigned w = 0; w != NODE_WORDS; ++w) {
ret->words[w] = fnv_hash(ret->words[w], parent->words[w]);
}
}
{
__m128i fnv_prime = _mm_set1_epi32(FNV_PRIME);
__m128i xmm0 = _mm_mullo_epi32(fnv_prime, mix[n].xmm[0]);
__m128i xmm1 = _mm_mullo_epi32(fnv_prime, mix[n].xmm[1]);
__m128i xmm2 = _mm_mullo_epi32(fnv_prime, mix[n].xmm[2]);
__m128i xmm3 = _mm_mullo_epi32(fnv_prime, mix[n].xmm[3]);
mix[n].xmm[0] = _mm_xor_si128(xmm0, dag_node->xmm[0]);
mix[n].xmm[1] = _mm_xor_si128(xmm1, dag_node->xmm[1]);
mix[n].xmm[2] = _mm_xor_si128(xmm2, dag_node->xmm[2]);
mix[n].xmm[3] = _mm_xor_si128(xmm3, dag_node->xmm[3]);
}
#else
{
for (unsigned w = 0; w != NODE_WORDS; ++w) {
mix[n].words[w] = fnv_hash(mix[n].words[w], dag_node->words[w]);
}
}
#endif
}
}
SHA3_512(ret->bytes, ret->bytes, sizeof(node));
}
// compress mix
for (uint32_t w = 0; w != MIX_WORDS; w += 4) {
uint32_t reduction = mix->words[w + 0];
reduction = reduction * FNV_PRIME ^ mix->words[w + 1];
reduction = reduction * FNV_PRIME ^ mix->words[w + 2];
reduction = reduction * FNV_PRIME ^ mix->words[w + 3];
mix->words[w / 4] = reduction;
}
fix_endian_arr32(mix->words, MIX_WORDS / 4);
memcpy(&ret->mix_hash, mix->bytes, 32);
// final Keccak hash
SHA3_256(&ret->result, s_mix->bytes, 64 + 32); // Keccak-256(s + compressed_mix)
return true;
}
void ethash_compute_full_data(
void *mem,
ethash_params const *params,
ethash_cache const *cache) {
assert((params->full_size % (sizeof(uint32_t) * MIX_WORDS)) == 0);
assert((params->full_size % sizeof(node)) == 0);
node *full_nodes = mem;
// now compute full nodes
for (unsigned n = 0; n != (params->full_size / sizeof(node)); ++n) {
ethash_calculate_dag_item(&(full_nodes[n]), n, params, cache);
}
void ethash_quick_hash(
ethash_h256_t* return_hash,
ethash_h256_t const* header_hash,
uint64_t const nonce,
ethash_h256_t const* mix_hash
)
{
uint8_t buf[64 + 32];
memcpy(buf, header_hash, 32);
fix_endian64_same(nonce);
memcpy(&(buf[32]), &nonce, 8);
SHA3_512(buf, buf, 40);
memcpy(&(buf[64]), mix_hash, 32);
SHA3_256(return_hash, buf, 64 + 32);
}
static void ethash_hash(ethash_return_value *ret,
node const *full_nodes,
ethash_cache const *cache,
ethash_params const *params,
ethash_blockhash_t const *header_hash,
const uint64_t nonce)
ethash_h256_t ethash_get_seedhash(uint64_t block_number)
{
ethash_h256_t ret;
ethash_h256_reset(&ret);
uint64_t const epochs = block_number / ETHASH_EPOCH_LENGTH;
for (uint32_t i = 0; i < epochs; ++i)
SHA3_256(&ret, (uint8_t*)&ret, 32);
return ret;
}
int ethash_quick_check_difficulty(
ethash_h256_t const* header_hash,
uint64_t const nonce,
ethash_h256_t const* mix_hash,
ethash_h256_t const* difficulty
)
{
assert((params->full_size % MIX_WORDS) == 0);
// pack hash and nonce together into first 40 bytes of s_mix
assert(sizeof(node) * 8 == 512);
node s_mix[MIX_NODES + 1];
memcpy(s_mix[0].bytes, header_hash, 32);
#if BYTE_ORDER != LITTLE_ENDIAN
s_mix[0].double_words[4] = fix_endian64(nonce);
#else
s_mix[0].double_words[4] = nonce;
#endif
// compute sha3-512 hash and replicate across mix
SHA3_512(s_mix->bytes, s_mix->bytes, 40);
#if BYTE_ORDER != LITTLE_ENDIAN
for (unsigned w = 0; w != 16; ++w) {
s_mix[0].words[w] = fix_endian32(s_mix[0].words[w]);
}
#endif
node *const mix = s_mix + 1;
for (unsigned w = 0; w != MIX_WORDS; ++w) {
mix->words[w] = s_mix[0].words[w % NODE_WORDS];
}
unsigned const
page_size = sizeof(uint32_t) * MIX_WORDS,
num_full_pages = (unsigned) (params->full_size / page_size);
for (unsigned i = 0; i != ACCESSES; ++i) {
uint32_t const index = ((s_mix->words[0] ^ i) * FNV_PRIME ^ mix->words[i % MIX_WORDS]) % num_full_pages;
for (unsigned n = 0; n != MIX_NODES; ++n) {
const node *dag_node = &full_nodes[MIX_NODES * index + n];
if (!full_nodes) {
node tmp_node;
ethash_calculate_dag_item(&tmp_node, index * MIX_NODES + n, params, cache);
dag_node = &tmp_node;
}
#if defined(_M_X64) && ENABLE_SSE
{
__m128i fnv_prime = _mm_set1_epi32(FNV_PRIME);
__m128i xmm0 = _mm_mullo_epi32(fnv_prime, mix[n].xmm[0]);
__m128i xmm1 = _mm_mullo_epi32(fnv_prime, mix[n].xmm[1]);
__m128i xmm2 = _mm_mullo_epi32(fnv_prime, mix[n].xmm[2]);
__m128i xmm3 = _mm_mullo_epi32(fnv_prime, mix[n].xmm[3]);
mix[n].xmm[0] = _mm_xor_si128(xmm0, dag_node->xmm[0]);
mix[n].xmm[1] = _mm_xor_si128(xmm1, dag_node->xmm[1]);
mix[n].xmm[2] = _mm_xor_si128(xmm2, dag_node->xmm[2]);
mix[n].xmm[3] = _mm_xor_si128(xmm3, dag_node->xmm[3]);
}
#else
{
for (unsigned w = 0; w != NODE_WORDS; ++w) {
mix[n].words[w] = fnv_hash(mix[n].words[w], dag_node->words[w]);
}
}
#endif
}
}
// compress mix
for (unsigned w = 0; w != MIX_WORDS; w += 4) {
uint32_t reduction = mix->words[w + 0];
reduction = reduction * FNV_PRIME ^ mix->words[w + 1];
reduction = reduction * FNV_PRIME ^ mix->words[w + 2];
reduction = reduction * FNV_PRIME ^ mix->words[w + 3];
mix->words[w / 4] = reduction;
}
#if BYTE_ORDER != LITTLE_ENDIAN
for (unsigned w = 0; w != MIX_WORDS/4; ++w) {
mix->words[w] = fix_endian32(mix->words[w]);
}
#endif
memcpy(&ret->mix_hash, mix->bytes, 32);
// final Keccak hash
SHA3_256(&ret->result, s_mix->bytes, 64 + 32); // Keccak-256(s + compressed_mix)
ethash_h256_t return_hash;
ethash_quick_hash(&return_hash, header_hash, nonce, mix_hash);
return ethash_check_difficulty(&return_hash, difficulty);
}
void ethash_quick_hash(ethash_blockhash_t *return_hash,
ethash_blockhash_t const *header_hash,
const uint64_t nonce,
ethash_blockhash_t const *mix_hash)
ethash_light_t ethash_light_new_internal(uint64_t cache_size, ethash_h256_t const* seed)
{
struct ethash_light *ret;
ret = calloc(sizeof(*ret), 1);
if (!ret) {
return NULL;
}
ret->cache = malloc((size_t)cache_size);
if (!ret->cache) {
goto fail_free_light;
}
node* nodes = (node*)ret->cache;
if (!ethash_compute_cache_nodes(nodes, cache_size, seed)) {
goto fail_free_cache_mem;
}
ret->cache_size = cache_size;
return ret;
uint8_t buf[64 + 32];
memcpy(buf, header_hash, 32);
#if BYTE_ORDER != LITTLE_ENDIAN
nonce = fix_endian64(nonce);
#endif
memcpy(&(buf[32]), &nonce, 8);
SHA3_512(buf, buf, 40);
memcpy(&(buf[64]), mix_hash, 32);
SHA3_256(return_hash, buf, 64 + 32);
fail_free_cache_mem:
free(ret->cache);
fail_free_light:
free(ret);
return NULL;
}
void ethash_get_seedhash(ethash_blockhash_t *seedhash, const uint32_t block_number)
ethash_light_t ethash_light_new(uint64_t block_number)
{
ethash_blockhash_reset(seedhash);
const uint32_t epochs = block_number / EPOCH_LENGTH;
for (uint32_t i = 0; i < epochs; ++i)
SHA3_256(seedhash, (uint8_t*)seedhash, 32);
ethash_h256_t seedhash = ethash_get_seedhash(block_number);
ethash_light_t ret;
ret = ethash_light_new_internal(ethash_get_cachesize(block_number), &seedhash);
ret->block_number = block_number;
return ret;
}
int ethash_quick_check_difficulty(ethash_blockhash_t const *header_hash,
const uint64_t nonce,
ethash_blockhash_t const *mix_hash,
ethash_blockhash_t const *difficulty)
void ethash_light_delete(ethash_light_t light)
{
ethash_blockhash_t return_hash;
ethash_quick_hash(&return_hash, header_hash, nonce, mix_hash);
return ethash_check_difficulty(&return_hash, difficulty);
if (light->cache) {
free(light->cache);
}
free(light);
}
void ethash_full(ethash_return_value *ret,
void const *full_mem,
ethash_params const *params,
ethash_blockhash_t const *header_hash,
const uint64_t nonce)
ethash_return_value_t ethash_light_compute_internal(
ethash_light_t light,
uint64_t full_size,
ethash_h256_t const header_hash,
uint64_t nonce
)
{
ethash_hash(ret, (node const *) full_mem, NULL, params, header_hash, nonce);
ethash_return_value_t ret;
ret.success = true;
if (!ethash_hash(&ret, NULL, light, full_size, header_hash, nonce)) {
ret.success = false;
}
return ret;
}
void ethash_light(ethash_return_value *ret,
ethash_cache const *cache,
ethash_params const *params,
ethash_blockhash_t const *header_hash,
const uint64_t nonce)
ethash_return_value_t ethash_light_compute(
ethash_light_t light,
ethash_h256_t const header_hash,
uint64_t nonce
)
{
ethash_hash(ret, NULL, cache, params, header_hash, nonce);
uint64_t full_size = ethash_get_datasize(light->block_number);
return ethash_light_compute_internal(light, full_size, header_hash, nonce);
}
static bool ethash_mmap(struct ethash_full* ret, FILE* f)
{
int fd;
char* mmapped_data;
ret->file = f;
if ((fd = ethash_fileno(ret->file)) == -1) {
return false;
}
mmapped_data= mmap(
NULL,
(size_t)ret->file_size + ETHASH_DAG_MAGIC_NUM_SIZE,
PROT_READ | PROT_WRITE,
MAP_SHARED,
fd,
0
);
if (mmapped_data == MAP_FAILED) {
return false;
}
ret->data = (node*)(mmapped_data + ETHASH_DAG_MAGIC_NUM_SIZE);
return true;
}
ethash_full_t ethash_full_new_internal(
char const* dirname,
ethash_h256_t const seed_hash,
uint64_t full_size,
ethash_light_t const light,
ethash_callback_t callback
)
{
struct ethash_full* ret;
FILE *f = NULL;
ret = calloc(sizeof(*ret), 1);
if (!ret) {
return NULL;
}
ret->file_size = (size_t)full_size;
switch (ethash_io_prepare(dirname, seed_hash, &f, (size_t)full_size, false)) {
case ETHASH_IO_FAIL:
goto fail_free_full;
case ETHASH_IO_MEMO_MATCH:
if (!ethash_mmap(ret, f)) {
goto fail_close_file;
}
return ret;
case ETHASH_IO_MEMO_SIZE_MISMATCH:
// if a DAG of same filename but unexpected size is found, silently force new file creation
if (ethash_io_prepare(dirname, seed_hash, &f, (size_t)full_size, true) != ETHASH_IO_MEMO_MISMATCH) {
goto fail_free_full;
}
// fallthrough to the mismatch case here, DO NOT go through match
case ETHASH_IO_MEMO_MISMATCH:
if (!ethash_mmap(ret, f)) {
goto fail_close_file;
}
break;
}
if (!ethash_compute_full_data(ret->data, full_size, light, callback)) {
goto fail_free_full_data;
}
// after the DAG has been filled then we finalize it by writting the magic number at the beginning
if (fseek(f, 0, SEEK_SET) != 0) {
goto fail_free_full_data;
}
uint64_t const magic_num = ETHASH_DAG_MAGIC_NUM;
if (fwrite(&magic_num, ETHASH_DAG_MAGIC_NUM_SIZE, 1, f) != 1) {
goto fail_free_full_data;
}
fflush(f); // make sure the magic number IS there
return ret;
fail_free_full_data:
// could check that munmap(..) == 0 but even if it did not can't really do anything here
munmap(ret->data, (size_t)full_size);
fail_close_file:
fclose(ret->file);
fail_free_full:
free(ret);
return NULL;
}
ethash_full_t ethash_full_new(ethash_light_t light, ethash_callback_t callback)
{
char strbuf[256];
if (!ethash_get_default_dirname(strbuf, 256)) {
return NULL;
}
uint64_t full_size = ethash_get_datasize(light->block_number);
ethash_h256_t seedhash = ethash_get_seedhash(light->block_number);
return ethash_full_new_internal(strbuf, seedhash, full_size, light, callback);
}
void ethash_full_delete(ethash_full_t full)
{
// could check that munmap(..) == 0 but even if it did not can't really do anything here
munmap(full->data, (size_t)full->file_size);
if (full->file) {
fclose(full->file);
}
free(full);
}
ethash_return_value_t ethash_full_compute(
ethash_full_t full,
ethash_h256_t const header_hash,
uint64_t nonce
)
{
ethash_return_value_t ret;
ret.success = true;
if (!ethash_hash(
&ret,
(node const*)full->data,
NULL,
full->file_size,
header_hash,
nonce)) {
ret.success = false;
}
return ret;
}
void const* ethash_full_dag(ethash_full_t full)
{
return full->data;
}
uint64_t ethash_full_dag_size(ethash_full_t full)
{
return full->file_size;
}

149
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/internal.h generated vendored
View File

@ -2,6 +2,7 @@
#include "compiler.h"
#include "endian.h"
#include "ethash.h"
#include <stdio.h>
#define ENABLE_SSE 0
@ -15,14 +16,14 @@ extern "C" {
// compile time settings
#define NODE_WORDS (64/4)
#define MIX_WORDS (MIX_BYTES/4)
#define MIX_WORDS (ETHASH_MIX_BYTES/4)
#define MIX_NODES (MIX_WORDS / NODE_WORDS)
#include <stdint.h>
typedef union node {
uint8_t bytes[NODE_WORDS * 4];
uint32_t words[NODE_WORDS];
uint64_t double_words[NODE_WORDS / 2];
uint8_t bytes[NODE_WORDS * 4];
uint32_t words[NODE_WORDS];
uint64_t double_words[NODE_WORDS / 2];
#if defined(_M_X64) && ENABLE_SSE
__m128i xmm[NODE_WORDS/4];
@ -30,15 +31,139 @@ typedef union node {
} node;
void ethash_calculate_dag_item(node *const ret,
const unsigned node_index,
ethash_params const *params,
ethash_cache const *cache);
static inline uint8_t ethash_h256_get(ethash_h256_t const* hash, unsigned int i)
{
return hash->b[i];
}
void ethash_quick_hash(ethash_blockhash_t *return_hash,
ethash_blockhash_t const *header_hash,
const uint64_t nonce,
ethash_blockhash_t const *mix_hash);
static inline void ethash_h256_set(ethash_h256_t* hash, unsigned int i, uint8_t v)
{
hash->b[i] = v;
}
static inline void ethash_h256_reset(ethash_h256_t* hash)
{
memset(hash, 0, 32);
}
// Returns if hash is less than or equal to difficulty
static inline int ethash_check_difficulty(
ethash_h256_t const* hash,
ethash_h256_t const* difficulty
)
{
// Difficulty is big endian
for (int i = 0; i < 32; i++) {
if (ethash_h256_get(hash, i) == ethash_h256_get(difficulty, i)) {
continue;
}
return ethash_h256_get(hash, i) < ethash_h256_get(difficulty, i);
}
return 1;
}
int ethash_quick_check_difficulty(
ethash_h256_t const* header_hash,
uint64_t const nonce,
ethash_h256_t const* mix_hash,
ethash_h256_t const* difficulty
);
struct ethash_light {
void* cache;
uint64_t cache_size;
uint64_t block_number;
};
/**
* Allocate and initialize a new ethash_light handler. Internal version
*
* @param cache_size The size of the cache in bytes
* @param seed Block seedhash to be used during the computation of the
* cache nodes
* @return Newly allocated ethash_light handler or NULL in case of
* ERRNOMEM or invalid parameters used for @ref ethash_compute_cache_nodes()
*/
ethash_light_t ethash_light_new_internal(uint64_t cache_size, ethash_h256_t const* seed);
/**
* Calculate the light client data. Internal version.
*
* @param light The light client handler
* @param full_size The size of the full data in bytes.
* @param header_hash The header hash to pack into the mix
* @param nonce The nonce to pack into the mix
* @return The resulting hash.
*/
ethash_return_value_t ethash_light_compute_internal(
ethash_light_t light,
uint64_t full_size,
ethash_h256_t const header_hash,
uint64_t nonce
);
struct ethash_full {
FILE* file;
uint64_t file_size;
node* data;
};
/**
* Allocate and initialize a new ethash_full handler. Internal version.
*
* @param dirname The directory in which to put the DAG file.
* @param seedhash The seed hash of the block. Used in the DAG file naming.
* @param full_size The size of the full data in bytes.
* @param cache A cache object to use that was allocated with @ref ethash_cache_new().
* Iff this function succeeds the ethash_full_t will take memory
* memory ownership of the cache and free it at deletion. If
* not then the user still has to handle freeing of the cache himself.
* @param callback A callback function with signature of @ref ethash_callback_t
* It accepts an unsigned with which a progress of DAG calculation
* can be displayed. If all goes well the callback should return 0.
* If a non-zero value is returned then DAG generation will stop.
* @return Newly allocated ethash_full handler or NULL in case of
* ERRNOMEM or invalid parameters used for @ref ethash_compute_full_data()
*/
ethash_full_t ethash_full_new_internal(
char const* dirname,
ethash_h256_t const seed_hash,
uint64_t full_size,
ethash_light_t const light,
ethash_callback_t callback
);
void ethash_calculate_dag_item(
node* const ret,
uint32_t node_index,
ethash_light_t const cache
);
void ethash_quick_hash(
ethash_h256_t* return_hash,
ethash_h256_t const* header_hash,
const uint64_t nonce,
ethash_h256_t const* mix_hash
);
uint64_t ethash_get_datasize(uint64_t const block_number);
uint64_t ethash_get_cachesize(uint64_t const block_number);
/**
* Compute the memory data for a full node's memory
*
* @param mem A pointer to an ethash full's memory
* @param full_size The size of the full data in bytes
* @param cache A cache object to use in the calculation
* @param callback The callback function. Check @ref ethash_full_new() for details.
* @return true if all went fine and false for invalid parameters
*/
bool ethash_compute_full_data(
void* mem,
uint64_t full_size,
ethash_light_t const light,
ethash_callback_t callback
);
#ifdef __cplusplus
}

127
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/io.c generated vendored
View File

@ -22,68 +22,81 @@
#include <string.h>
#include <stdio.h>
// silly macro to save some typing
#define PASS_ARR(c_) (c_), sizeof(c_)
static bool ethash_io_write_file(char const *dirname,
char const* filename,
size_t filename_length,
void const* data,
size_t data_size)
enum ethash_io_rc ethash_io_prepare(
char const* dirname,
ethash_h256_t const seedhash,
FILE** output_file,
uint64_t file_size,
bool force_create
)
{
bool ret = false;
char *fullname = ethash_io_create_filename(dirname, filename, filename_length);
if (!fullname) {
return false;
}
FILE *f = fopen(fullname, "wb");
if (!f) {
goto free_name;
}
if (data_size != fwrite(data, 1, data_size, f)) {
goto close;
}
char mutable_name[DAG_MUTABLE_NAME_MAX_SIZE];
enum ethash_io_rc ret = ETHASH_IO_FAIL;
ret = true;
close:
fclose(f);
free_name:
free(fullname);
return ret;
}
// assert directory exists
if (!ethash_mkdir(dirname)) {
goto end;
}
bool ethash_io_write(char const *dirname,
ethash_params const* params,
ethash_blockhash_t seedhash,
void const* cache,
uint8_t **data,
uint64_t *data_size)
{
char info_buffer[DAG_MEMO_BYTESIZE];
// allocate the bytes
uint8_t *temp_data_ptr = malloc((size_t)params->full_size);
if (!temp_data_ptr) {
goto end;
}
ethash_compute_full_data(temp_data_ptr, params, cache);
ethash_io_mutable_name(ETHASH_REVISION, &seedhash, mutable_name);
char* tmpfile = ethash_io_create_filename(dirname, mutable_name, strlen(mutable_name));
if (!tmpfile) {
goto end;
}
if (!ethash_io_write_file(dirname, PASS_ARR(DAG_FILE_NAME), temp_data_ptr, (size_t)params->full_size)) {
goto fail_free;
}
FILE *f;
if (!force_create) {
// try to open the file
f = ethash_fopen(tmpfile, "rb+");
if (f) {
size_t found_size;
if (!ethash_file_size(f, &found_size)) {
fclose(f);
goto free_memo;
}
if (file_size != found_size - ETHASH_DAG_MAGIC_NUM_SIZE) {
fclose(f);
ret = ETHASH_IO_MEMO_SIZE_MISMATCH;
goto free_memo;
}
// compare the magic number, no need to care about endianess since it's local
uint64_t magic_num;
if (fread(&magic_num, ETHASH_DAG_MAGIC_NUM_SIZE, 1, f) != 1) {
// I/O error
fclose(f);
ret = ETHASH_IO_MEMO_SIZE_MISMATCH;
goto free_memo;
}
if (magic_num != ETHASH_DAG_MAGIC_NUM) {
fclose(f);
ret = ETHASH_IO_MEMO_SIZE_MISMATCH;
goto free_memo;
}
ret = ETHASH_IO_MEMO_MATCH;
goto set_file;
}
}
ethash_io_serialize_info(REVISION, seedhash, info_buffer);
if (!ethash_io_write_file(dirname, PASS_ARR(DAG_MEMO_NAME), info_buffer, DAG_MEMO_BYTESIZE)) {
goto fail_free;
}
// file does not exist, will need to be created
f = ethash_fopen(tmpfile, "wb+");
if (!f) {
goto free_memo;
}
// make sure it's of the proper size
if (fseek(f, (long int)(file_size + ETHASH_DAG_MAGIC_NUM_SIZE - 1), SEEK_SET) != 0) {
fclose(f);
goto free_memo;
}
fputc('\n', f);
fflush(f);
ret = ETHASH_IO_MEMO_MISMATCH;
goto set_file;
*data = temp_data_ptr;
*data_size = params->full_size;
return true;
fail_free:
free(temp_data_ptr);
ret = ETHASH_IO_MEMO_MATCH;
set_file:
*output_file = f;
free_memo:
free(tmpfile);
end:
return false;
return ret;
}
#undef PASS_ARR

207
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/io.h generated vendored
View File

@ -22,94 +22,163 @@
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#ifdef __cplusplus
#define __STDC_FORMAT_MACROS 1
#endif
#include <inttypes.h>
#include "endian.h"
#include "ethash.h"
#ifdef __cplusplus
extern "C" {
#endif
static const char DAG_FILE_NAME[] = "full";
static const char DAG_MEMO_NAME[] = "full.info";
// MSVC thinks that "static const unsigned int" is not a compile time variable. Sorry for the #define :(
#define DAG_MEMO_BYTESIZE 36
// Maximum size for mutable part of DAG file name
// 10 is for maximum number of digits of a uint32_t (for REVISION)
// 1 is for _ and 16 is for the first 16 hex digits for first 8 bytes of
// the seedhash and last 1 is for the null terminating character
// Reference: https://github.com/ethereum/wiki/wiki/Ethash-DAG
#define DAG_MUTABLE_NAME_MAX_SIZE (10 + 1 + 16 + 1)
/// Possible return values of @see ethash_io_prepare
enum ethash_io_rc {
ETHASH_IO_FAIL = 0, ///< There has been an IO failure
ETHASH_IO_MEMO_MISMATCH, ///< Memo file either did not exist or there was content mismatch
ETHASH_IO_MEMO_MATCH, ///< Memo file existed and contents matched. No need to do anything
ETHASH_IO_FAIL = 0, ///< There has been an IO failure
ETHASH_IO_MEMO_SIZE_MISMATCH, ///< DAG with revision/hash match, but file size was wrong.
ETHASH_IO_MEMO_MISMATCH, ///< The DAG file did not exist or there was revision/hash mismatch
ETHASH_IO_MEMO_MATCH, ///< DAG file existed and revision/hash matched. No need to do anything
};
// small hack for windows. I don't feel I should use va_args and forward just
// to have this one function properly cross-platform abstracted
#if defined(_WIN32) && !defined(__GNUC__)
#define snprintf(...) sprintf_s(__VA_ARGS__)
#endif
/**
* Prepares io for ethash
*
* Create the DAG directory if it does not exist, and check if the memo file matches.
* If it does not match then it's deleted to pave the way for @ref ethash_io_write()
*
* @param dirname A null terminated c-string of the path of the ethash
* data directory. If it does not exist it's created.
* @param seedhash The seedhash of the current block number
* @return For possible return values @see enum ethash_io_rc
*/
enum ethash_io_rc ethash_io_prepare(char const *dirname, ethash_blockhash_t seedhash);
/**
* Fully computes data and writes it to the file on disk.
*
* This function should be called after @see ethash_io_prepare() and only if
* its return value is @c ETHASH_IO_MEMO_MISMATCH. Will write both the full data
* and the memo file.
* Create the DAG directory and the DAG file if they don't exist.
*
* @param[in] dirname A null terminated c-string of the path of the ethash
* data directory. Has to exist.
* @param[in] params An ethash_params object containing the full size
* and the cache size
* @param[in] seedhash The seedhash of the current block number
* @param[in] cache The cache data. Would have usually been calulated by
* @see ethash_prep_light().
* @param[out] data Pass a pointer to uint8_t by reference here. If the
* function is succesfull then this point to the allocated
* data calculated by @see ethash_prep_full(). Memory
* ownership is transfered to the callee. Remember that
* you eventually need to free this with a call to free().
* @param[out] data_size Pass a uint64_t by value. If the function is succesfull
* then this will contain the number of bytes allocated
* for @a data.
* @return True for success and false in case of failure.
* data directory. If it does not exist it's created.
* @param[in] seedhash The seedhash of the current block number, used in the
* naming of the file as can be seen from the spec at:
* https://github.com/ethereum/wiki/wiki/Ethash-DAG
* @param[out] output_file If there was no failure then this will point to an open
* file descriptor. User is responsible for closing it.
* In the case of memo match then the file is open on read
* mode, while on the case of mismatch a new file is created
* on write mode
* @param[in] file_size The size that the DAG file should have on disk
* @param[out] force_create If true then there is no check to see if the file
* already exists
* @return For possible return values @see enum ethash_io_rc
*/
bool ethash_io_write(char const *dirname,
ethash_params const* params,
ethash_blockhash_t seedhash,
void const* cache,
uint8_t **data,
uint64_t *data_size);
enum ethash_io_rc ethash_io_prepare(
char const* dirname,
ethash_h256_t const seedhash,
FILE** output_file,
uint64_t file_size,
bool force_create
);
static inline void ethash_io_serialize_info(uint32_t revision,
ethash_blockhash_t seed_hash,
char *output)
/**
* An fopen wrapper for no-warnings crossplatform fopen.
*
* Msvc compiler considers fopen to be insecure and suggests to use their
* alternative. This is a wrapper for this alternative. Another way is to
* #define _CRT_SECURE_NO_WARNINGS, but disabling all security warnings does
* not sound like a good idea.
*
* @param file_name The path to the file to open
* @param mode Opening mode. Check fopen()
* @return The FILE* or NULL in failure
*/
FILE* ethash_fopen(char const* file_name, char const* mode);
/**
* An strncat wrapper for no-warnings crossplatform strncat.
*
* Msvc compiler considers strncat to be insecure and suggests to use their
* alternative. This is a wrapper for this alternative. Another way is to
* #define _CRT_SECURE_NO_WARNINGS, but disabling all security warnings does
* not sound like a good idea.
*
* @param des Destination buffer
* @param dest_size Maximum size of the destination buffer. This is the
* extra argument for the MSVC secure strncat
* @param src Souce buffer
* @param count Number of bytes to copy from source
* @return If all is well returns the dest buffer. If there is an
* error returns NULL
*/
char* ethash_strncat(char* dest, size_t dest_size, char const* src, size_t count);
/**
* A cross-platform mkdir wrapper to create a directory or assert it's there
*
* @param dirname The full path of the directory to create
* @return true if the directory was created or if it already
* existed
*/
bool ethash_mkdir(char const* dirname);
/**
* Get a file's size
*
* @param[in] f The open file stream whose size to get
* @param[out] size Pass a size_t by reference to contain the file size
* @return true in success and false if there was a failure
*/
bool ethash_file_size(FILE* f, size_t* ret_size);
/**
* Get a file descriptor number from a FILE stream
*
* @param f The file stream whose fd to get
* @return Platform specific fd handler
*/
int ethash_fileno(FILE* f);
/**
* Create the filename for the DAG.
*
* @param dirname The directory name in which the DAG file should reside
* If it does not end with a directory separator it is appended.
* @param filename The actual name of the file
* @param filename_length The length of the filename in bytes
* @return A char* containing the full name. User must deallocate.
*/
char* ethash_io_create_filename(
char const* dirname,
char const* filename,
size_t filename_length
);
/**
* Gets the default directory name for the DAG depending on the system
*
* The spec defining this directory is here: https://github.com/ethereum/wiki/wiki/Ethash-DAG
*
* @param[out] strbuf A string buffer of sufficient size to keep the
* null termninated string of the directory name
* @param[in] buffsize Size of @a strbuf in bytes
* @return true for success and false otherwise
*/
bool ethash_get_default_dirname(char* strbuf, size_t buffsize);
static inline bool ethash_io_mutable_name(
uint32_t revision,
ethash_h256_t const* seed_hash,
char* output
)
{
// if .info is only consumed locally we don't really care about endianess
memcpy(output, &revision, 4);
memcpy(output + 4, &seed_hash, 32);
uint64_t hash = *((uint64_t*)seed_hash);
#if LITTLE_ENDIAN == BYTE_ORDER
hash = ethash_swap_u64(hash);
#endif
return snprintf(output, DAG_MUTABLE_NAME_MAX_SIZE, "%u_%016" PRIx64, revision, hash) >= 0;
}
static inline char *ethash_io_create_filename(char const *dirname,
char const* filename,
size_t filename_length)
{
// in C the cast is not needed, but a C++ compiler will complain for invalid conversion
char *name = (char*)malloc(strlen(dirname) + filename_length);
if (!name) {
return NULL;
}
name[0] = '\0';
strcat(name, dirname);
strcat(name, filename);
return name;
}
#ifdef __cplusplus
}
#endif

116
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/io_posix.c generated vendored
View File

@ -27,50 +27,76 @@
#include <stdio.h>
#include <unistd.h>
enum ethash_io_rc ethash_io_prepare(char const *dirname, ethash_blockhash_t seedhash)
FILE* ethash_fopen(char const* file_name, char const* mode)
{
char read_buffer[DAG_MEMO_BYTESIZE];
char expect_buffer[DAG_MEMO_BYTESIZE];
enum ethash_io_rc ret = ETHASH_IO_FAIL;
// assert directory exists, full owner permissions and read/search for others
int rc = mkdir(dirname, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
if (rc == -1 && errno != EEXIST) {
goto end;
}
char *memofile = ethash_io_create_filename(dirname, DAG_MEMO_NAME, sizeof(DAG_MEMO_NAME));
if (!memofile) {
goto end;
}
// try to open memo file
FILE *f = fopen(memofile, "rb");
if (!f) {
// file does not exist, so no checking happens. All is fine.
ret = ETHASH_IO_MEMO_MISMATCH;
goto free_memo;
}
if (fread(read_buffer, 1, DAG_MEMO_BYTESIZE, f) != DAG_MEMO_BYTESIZE) {
goto close;
}
ethash_io_serialize_info(REVISION, seedhash, expect_buffer);
if (memcmp(read_buffer, expect_buffer, DAG_MEMO_BYTESIZE) != 0) {
// we have different memo contents so delete the memo file
if (unlink(memofile) != 0) {
goto close;
}
ret = ETHASH_IO_MEMO_MISMATCH;
}
ret = ETHASH_IO_MEMO_MATCH;
close:
fclose(f);
free_memo:
free(memofile);
end:
return ret;
return fopen(file_name, mode);
}
char* ethash_strncat(char* dest, size_t dest_size, char const* src, size_t count)
{
return strlen(dest) + count + 1 <= dest_size ? strncat(dest, src, count) : NULL;
}
bool ethash_mkdir(char const* dirname)
{
int rc = mkdir(dirname, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
return rc != -1 || errno == EEXIST;
}
int ethash_fileno(FILE *f)
{
return fileno(f);
}
char* ethash_io_create_filename(
char const* dirname,
char const* filename,
size_t filename_length
)
{
size_t dirlen = strlen(dirname);
size_t dest_size = dirlen + filename_length + 1;
if (dirname[dirlen] != '/') {
dest_size += 1;
}
char* name = malloc(dest_size);
if (!name) {
return NULL;
}
name[0] = '\0';
ethash_strncat(name, dest_size, dirname, dirlen);
if (dirname[dirlen] != '/') {
ethash_strncat(name, dest_size, "/", 1);
}
ethash_strncat(name, dest_size, filename, filename_length);
return name;
}
bool ethash_file_size(FILE* f, size_t* ret_size)
{
struct stat st;
int fd;
if ((fd = fileno(f)) == -1 || fstat(fd, &st) != 0) {
return false;
}
*ret_size = st.st_size;
return true;
}
bool ethash_get_default_dirname(char* strbuf, size_t buffsize)
{
static const char dir_suffix[] = ".ethash/";
strbuf[0] = '\0';
char* home_dir = getenv("HOME");
size_t len = strlen(home_dir);
if (!ethash_strncat(strbuf, buffsize, home_dir, len)) {
return false;
}
if (home_dir[len] != '/') {
if (!ethash_strncat(strbuf, buffsize, "/", 1)) {
return false;
}
}
return ethash_strncat(strbuf, buffsize, dir_suffix, sizeof(dir_suffix));
}

117
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/io_win32.c generated vendored
View File

@ -23,51 +23,78 @@
#include <direct.h>
#include <errno.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <Shlobj.h>
enum ethash_io_rc ethash_io_prepare(char const *dirname, ethash_blockhash_t seedhash)
FILE* ethash_fopen(char const* file_name, char const* mode)
{
char read_buffer[DAG_MEMO_BYTESIZE];
char expect_buffer[DAG_MEMO_BYTESIZE];
enum ethash_io_rc ret = ETHASH_IO_FAIL;
// assert directory exists
int rc = _mkdir(dirname);
if (rc == -1 && errno != EEXIST) {
goto end;
}
char *memofile = ethash_io_create_filename(dirname, DAG_MEMO_NAME, sizeof(DAG_MEMO_NAME));
if (!memofile) {
goto end;
}
// try to open memo file
FILE *f = fopen(memofile, "rb");
if (!f) {
// file does not exist, so no checking happens. All is fine.
ret = ETHASH_IO_MEMO_MISMATCH;
goto free_memo;
}
if (fread(read_buffer, 1, DAG_MEMO_BYTESIZE, f) != DAG_MEMO_BYTESIZE) {
goto close;
}
ethash_io_serialize_info(REVISION, seedhash, expect_buffer);
if (memcmp(read_buffer, expect_buffer, DAG_MEMO_BYTESIZE) != 0) {
// we have different memo contents so delete the memo file
if (_unlink(memofile) != 0) {
goto close;
}
ret = ETHASH_IO_MEMO_MISMATCH;
}
ret = ETHASH_IO_MEMO_MATCH;
close:
fclose(f);
free_memo:
free(memofile);
end:
return ret;
FILE* f;
return fopen_s(&f, file_name, mode) == 0 ? f : NULL;
}
char* ethash_strncat(char* dest, size_t dest_size, char const* src, size_t count)
{
return strncat_s(dest, dest_size, src, count) == 0 ? dest : NULL;
}
bool ethash_mkdir(char const* dirname)
{
int rc = _mkdir(dirname);
return rc != -1 || errno == EEXIST;
}
int ethash_fileno(FILE* f)
{
return _fileno(f);
}
char* ethash_io_create_filename(
char const* dirname,
char const* filename,
size_t filename_length
)
{
size_t dirlen = strlen(dirname);
size_t dest_size = dirlen + filename_length + 1;
if (dirname[dirlen] != '\\' || dirname[dirlen] != '/') {
dest_size += 1;
}
char* name = malloc(dest_size);
if (!name) {
return NULL;
}
name[0] = '\0';
ethash_strncat(name, dest_size, dirname, dirlen);
if (dirname[dirlen] != '\\' || dirname[dirlen] != '/') {
ethash_strncat(name, dest_size, "\\", 1);
}
ethash_strncat(name, dest_size, filename, filename_length);
return name;
}
bool ethash_file_size(FILE* f, size_t* ret_size)
{
struct _stat st;
int fd;
if ((fd = _fileno(f)) == -1 || _fstat(fd, &st) != 0) {
return false;
}
*ret_size = st.st_size;
return true;
}
bool ethash_get_default_dirname(char* strbuf, size_t buffsize)
{
static const char dir_suffix[] = "Appdata\\Ethash\\";
strbuf[0] = '\0';
if (!SUCCEEDED(SHGetFolderPathW(NULL, CSIDL_PROFILE, NULL, 0, (WCHAR*)strbuf))) {
return false;
}
if (!ethash_strncat(strbuf, buffsize, "\\", 1)) {
return false;
}
return ethash_strncat(strbuf, buffsize, dir_suffix, sizeof(dir_suffix));
}

47
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/mmap.h generated vendored Normal file
View File

@ -0,0 +1,47 @@
/*
This file is part of ethash.
ethash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
ethash is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with ethash. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file mmap.h
* @author Lefteris Karapetsas <lefteris@ethdev.com>
* @date 2015
*/
#pragma once
#if defined(__MINGW32__) || defined(_WIN32)
#include <sys/types.h>
#define PROT_READ 0x1
#define PROT_WRITE 0x2
/* This flag is only available in WinXP+ */
#ifdef FILE_MAP_EXECUTE
#define PROT_EXEC 0x4
#else
#define PROT_EXEC 0x0
#define FILE_MAP_EXECUTE 0
#endif
#define MAP_SHARED 0x01
#define MAP_PRIVATE 0x02
#define MAP_ANONYMOUS 0x20
#define MAP_ANON MAP_ANONYMOUS
#define MAP_FAILED ((void *) -1)
void* mmap(void* start, size_t length, int prot, int flags, int fd, off_t offset);
void munmap(void* addr, size_t length);
#else // posix, yay! ^_^
#include <sys/mman.h>
#endif

84
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/mmap_win32.c generated vendored Normal file
View File

@ -0,0 +1,84 @@
/* mmap() replacement for Windows
*
* Author: Mike Frysinger <vapier@gentoo.org>
* Placed into the public domain
*/
/* References:
* CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
* CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
* MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
* UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
*/
#include <io.h>
#include <windows.h>
#include "mmap.h"
#ifdef __USE_FILE_OFFSET64
# define DWORD_HI(x) (x >> 32)
# define DWORD_LO(x) ((x) & 0xffffffff)
#else
# define DWORD_HI(x) (0)
# define DWORD_LO(x) (x)
#endif
void* mmap(void* start, size_t length, int prot, int flags, int fd, off_t offset)
{
if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
return MAP_FAILED;
if (fd == -1) {
if (!(flags & MAP_ANON) || offset)
return MAP_FAILED;
} else if (flags & MAP_ANON)
return MAP_FAILED;
DWORD flProtect;
if (prot & PROT_WRITE) {
if (prot & PROT_EXEC)
flProtect = PAGE_EXECUTE_READWRITE;
else
flProtect = PAGE_READWRITE;
} else if (prot & PROT_EXEC) {
if (prot & PROT_READ)
flProtect = PAGE_EXECUTE_READ;
else if (prot & PROT_EXEC)
flProtect = PAGE_EXECUTE;
} else
flProtect = PAGE_READONLY;
off_t end = length + offset;
HANDLE mmap_fd, h;
if (fd == -1)
mmap_fd = INVALID_HANDLE_VALUE;
else
mmap_fd = (HANDLE)_get_osfhandle(fd);
h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
if (h == NULL)
return MAP_FAILED;
DWORD dwDesiredAccess;
if (prot & PROT_WRITE)
dwDesiredAccess = FILE_MAP_WRITE;
else
dwDesiredAccess = FILE_MAP_READ;
if (prot & PROT_EXEC)
dwDesiredAccess |= FILE_MAP_EXECUTE;
if (flags & MAP_PRIVATE)
dwDesiredAccess |= FILE_MAP_COPY;
void *ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
if (ret == NULL) {
ret = MAP_FAILED;
}
// since we are handling the file ourselves with fd, close the Windows Handle here
CloseHandle(h);
return ret;
}
void munmap(void* addr, size_t length)
{
UnmapViewOfFile(addr);
}
#undef DWORD_HI
#undef DWORD_LO

192
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/sha3.c generated vendored
View File

@ -17,65 +17,65 @@
/*** Constants. ***/
static const uint8_t rho[24] = \
{ 1, 3, 6, 10, 15, 21,
28, 36, 45, 55, 2, 14,
27, 41, 56, 8, 25, 43,
62, 18, 39, 61, 20, 44};
{ 1, 3, 6, 10, 15, 21,
28, 36, 45, 55, 2, 14,
27, 41, 56, 8, 25, 43,
62, 18, 39, 61, 20, 44};
static const uint8_t pi[24] = \
{10, 7, 11, 17, 18, 3,
5, 16, 8, 21, 24, 4,
15, 23, 19, 13, 12, 2,
20, 14, 22, 9, 6, 1};
{10, 7, 11, 17, 18, 3,
5, 16, 8, 21, 24, 4,
15, 23, 19, 13, 12, 2,
20, 14, 22, 9, 6, 1};
static const uint64_t RC[24] = \
{1ULL, 0x8082ULL, 0x800000000000808aULL, 0x8000000080008000ULL,
0x808bULL, 0x80000001ULL, 0x8000000080008081ULL, 0x8000000000008009ULL,
0x8aULL, 0x88ULL, 0x80008009ULL, 0x8000000aULL,
0x8000808bULL, 0x800000000000008bULL, 0x8000000000008089ULL, 0x8000000000008003ULL,
0x8000000000008002ULL, 0x8000000000000080ULL, 0x800aULL, 0x800000008000000aULL,
0x8000000080008081ULL, 0x8000000000008080ULL, 0x80000001ULL, 0x8000000080008008ULL};
{1ULL, 0x8082ULL, 0x800000000000808aULL, 0x8000000080008000ULL,
0x808bULL, 0x80000001ULL, 0x8000000080008081ULL, 0x8000000000008009ULL,
0x8aULL, 0x88ULL, 0x80008009ULL, 0x8000000aULL,
0x8000808bULL, 0x800000000000008bULL, 0x8000000000008089ULL, 0x8000000000008003ULL,
0x8000000000008002ULL, 0x8000000000000080ULL, 0x800aULL, 0x800000008000000aULL,
0x8000000080008081ULL, 0x8000000000008080ULL, 0x80000001ULL, 0x8000000080008008ULL};
/*** Helper macros to unroll the permutation. ***/
#define rol(x, s) (((x) << s) | ((x) >> (64 - s)))
#define REPEAT6(e) e e e e e e
#define REPEAT24(e) REPEAT6(e e e e)
#define REPEAT5(e) e e e e e
#define FOR5(v, s, e) \
v = 0; \
REPEAT5(e; v += s;)
#define FOR5(v, s, e) \
v = 0; \
REPEAT5(e; v += s;)
/*** Keccak-f[1600] ***/
static inline void keccakf(void* state) {
uint64_t* a = (uint64_t*)state;
uint64_t b[5] = {0};
uint64_t t = 0;
uint8_t x, y;
uint64_t* a = (uint64_t*)state;
uint64_t b[5] = {0};
uint64_t t = 0;
uint8_t x, y;
for (int i = 0; i < 24; i++) {
// Theta
FOR5(x, 1,
b[x] = 0;
FOR5(y, 5,
b[x] ^= a[x + y]; ))
FOR5(x, 1,
FOR5(y, 5,
a[y + x] ^= b[(x + 4) % 5] ^ rol(b[(x + 1) % 5], 1); ))
// Rho and pi
t = a[1];
x = 0;
REPEAT24(b[0] = a[pi[x]];
a[pi[x]] = rol(t, rho[x]);
t = b[0];
x++; )
// Chi
FOR5(y,
5,
FOR5(x, 1,
b[x] = a[y + x];)
FOR5(x, 1,
a[y + x] = b[x] ^ ((~b[(x + 1) % 5]) & b[(x + 2) % 5]); ))
// Iota
a[0] ^= RC[i];
}
for (int i = 0; i < 24; i++) {
// Theta
FOR5(x, 1,
b[x] = 0;
FOR5(y, 5,
b[x] ^= a[x + y]; ))
FOR5(x, 1,
FOR5(y, 5,
a[y + x] ^= b[(x + 4) % 5] ^ rol(b[(x + 1) % 5], 1); ))
// Rho and pi
t = a[1];
x = 0;
REPEAT24(b[0] = a[pi[x]];
a[pi[x]] = rol(t, rho[x]);
t = b[0];
x++; )
// Chi
FOR5(y,
5,
FOR5(x, 1,
b[x] = a[y + x];)
FOR5(x, 1,
a[y + x] = b[x] ^ ((~b[(x + 1) % 5]) & b[(x + 2) % 5]); ))
// Iota
a[0] ^= RC[i];
}
}
/******** The FIPS202-defined functions. ********/
@ -83,20 +83,20 @@ static inline void keccakf(void* state) {
/*** Some helper macros. ***/
#define _(S) do { S } while (0)
#define FOR(i, ST, L, S) \
_(for (size_t i = 0; i < L; i += ST) { S; })
#define mkapply_ds(NAME, S) \
static inline void NAME(uint8_t* dst, \
const uint8_t* src, \
size_t len) { \
FOR(i, 1, len, S); \
}
#define mkapply_sd(NAME, S) \
static inline void NAME(const uint8_t* src, \
uint8_t* dst, \
size_t len) { \
FOR(i, 1, len, S); \
}
#define FOR(i, ST, L, S) \
_(for (size_t i = 0; i < L; i += ST) { S; })
#define mkapply_ds(NAME, S) \
static inline void NAME(uint8_t* dst, \
const uint8_t* src, \
size_t len) { \
FOR(i, 1, len, S); \
}
#define mkapply_sd(NAME, S) \
static inline void NAME(const uint8_t* src, \
uint8_t* dst, \
size_t len) { \
FOR(i, 1, len, S); \
}
mkapply_ds(xorin, dst[i] ^= src[i]) // xorin
mkapply_sd(setout, dst[i] = src[i]) // setout
@ -105,46 +105,46 @@ mkapply_sd(setout, dst[i] = src[i]) // setout
#define Plen 200
// Fold P*F over the full blocks of an input.
#define foldP(I, L, F) \
while (L >= rate) { \
F(a, I, rate); \
P(a); \
I += rate; \
L -= rate; \
}
#define foldP(I, L, F) \
while (L >= rate) { \
F(a, I, rate); \
P(a); \
I += rate; \
L -= rate; \
}
/** The sponge-based hash construction. **/
static inline int hash(uint8_t* out, size_t outlen,
const uint8_t* in, size_t inlen,
size_t rate, uint8_t delim) {
if ((out == NULL) || ((in == NULL) && inlen != 0) || (rate >= Plen)) {
return -1;
}
uint8_t a[Plen] = {0};
// Absorb input.
foldP(in, inlen, xorin);
// Xor in the DS and pad frame.
a[inlen] ^= delim;
a[rate - 1] ^= 0x80;
// Xor in the last block.
xorin(a, in, inlen);
// Apply P
P(a);
// Squeeze output.
foldP(out, outlen, setout);
setout(a, out, outlen);
memset(a, 0, 200);
return 0;
const uint8_t* in, size_t inlen,
size_t rate, uint8_t delim) {
if ((out == NULL) || ((in == NULL) && inlen != 0) || (rate >= Plen)) {
return -1;
}
uint8_t a[Plen] = {0};
// Absorb input.
foldP(in, inlen, xorin);
// Xor in the DS and pad frame.
a[inlen] ^= delim;
a[rate - 1] ^= 0x80;
// Xor in the last block.
xorin(a, in, inlen);
// Apply P
P(a);
// Squeeze output.
foldP(out, outlen, setout);
setout(a, out, outlen);
memset(a, 0, 200);
return 0;
}
#define defsha3(bits) \
int sha3_##bits(uint8_t* out, size_t outlen, \
const uint8_t* in, size_t inlen) { \
if (outlen > (bits/8)) { \
return -1; \
} \
return hash(out, outlen, in, inlen, 200 - (bits / 4), 0x01); \
}
#define defsha3(bits) \
int sha3_##bits(uint8_t* out, size_t outlen, \
const uint8_t* in, size_t inlen) { \
if (outlen > (bits/8)) { \
return -1; \
} \
return hash(out, outlen, in, inlen, 200 - (bits / 4), 0x01); \
}
/*** FIPS202 SHA3 FOFs ***/
defsha3(256)

12
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/sha3.h generated vendored
View File

@ -8,22 +8,22 @@ extern "C" {
#include <stdint.h>
#include <stdlib.h>
struct ethash_blockhash;
struct ethash_h256;
#define decsha3(bits) \
int sha3_##bits(uint8_t*, size_t, const uint8_t*, size_t);
int sha3_##bits(uint8_t*, size_t, uint8_t const*, size_t);
decsha3(256)
decsha3(512)
static inline void SHA3_256(struct ethash_blockhash const* ret, uint8_t const *data, const size_t size)
static inline void SHA3_256(struct ethash_h256 const* ret, uint8_t const* data, size_t const size)
{
sha3_256((uint8_t*)ret, 32, data, size);
sha3_256((uint8_t*)ret, 32, data, size);
}
static inline void SHA3_512(uint8_t *ret, uint8_t const *data, const size_t size)
static inline void SHA3_512(uint8_t* ret, uint8_t const* data, size_t const size)
{
sha3_512(ret, 64, data, size);
sha3_512(ret, 64, data, size);
}
#ifdef __cplusplus

14
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/sha3_cryptopp.cpp generated vendored
View File

@ -23,13 +23,15 @@
#include <cryptopp/sha3.h>
extern "C" {
struct ethash_blockhash;
typedef struct ethash_blockhash ethash_blockhash_t;
void SHA3_256(ethash_blockhash_t const* ret, const uint8_t *data, size_t size) {
CryptoPP::SHA3_256().CalculateDigest((uint8_t*)ret, data, size);
struct ethash_h256;
typedef struct ethash_h256 ethash_h256_t;
void SHA3_256(ethash_h256_t const* ret, uint8_t const* data, size_t size)
{
CryptoPP::SHA3_256().CalculateDigest((uint8_t*)ret, data, size);
}
void SHA3_512(uint8_t *const ret, const uint8_t *data, size_t size) {
CryptoPP::SHA3_512().CalculateDigest(ret, data, size);
void SHA3_512(uint8_t* const ret, uint8_t const* data, size_t size)
{
CryptoPP::SHA3_512().CalculateDigest(ret, data, size);
}
}

7
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/sha3_cryptopp.h generated vendored
View File

@ -8,11 +8,10 @@
extern "C" {
#endif
struct ethash_blockhash;
typedef struct ethash_blockhash ethash_blockhash_t;
struct ethash_h256;
void SHA3_256(ethash_blockhash_t *const ret, const uint8_t *data, size_t size);
void SHA3_512(uint8_t *const ret, const uint8_t *data, size_t size);
void SHA3_256(struct ethash_h256 const* ret, uint8_t const* data, size_t size);
void SHA3_512(uint8_t* const ret, uint8_t const* data, size_t size);
#ifdef __cplusplus
}

10
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/util.h generated vendored
View File

@ -26,11 +26,11 @@
extern "C" {
#endif
#ifdef _MSC_VER
void debugf(const char *str, ...);
#else
#define debugf printf
#endif
//#ifdef _MSC_VER
void debugf(char const* str, ...);
//#else
//#define debugf printf
//#endif
static inline uint32_t min_u32(uint32_t a, uint32_t b)
{

9
Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/util.c → Godeps/_workspace/src/github.com/ethereum/ethash/src/libethash/util_win32.c generated vendored
View File

@ -22,20 +22,17 @@
#include <stdio.h>
#include "util.h"
#ifdef _MSC_VER
// foward declare without all of Windows.h
__declspec(dllimport) void __stdcall OutputDebugStringA(const char* lpOutputString);
__declspec(dllimport) void __stdcall OutputDebugStringA(char const* lpOutputString);
void debugf(const char *str, ...)
void debugf(char const* str, ...)
{
va_list args;
va_start(args, str);
va_start(args, str);
char buf[1<<16];
_vsnprintf_s(buf, sizeof(buf), sizeof(buf), str, args);
buf[sizeof(buf)-1] = '\0';
OutputDebugStringA(buf);
}
#endif

79
Godeps/_workspace/src/github.com/ethereum/ethash/src/python/core.c generated vendored
View File

@ -13,16 +13,16 @@
#define PY_CONST_STRING_FORMAT "s"
#endif
#define MIX_WORDS (MIX_BYTES/4)
#define MIX_WORDS (ETHASH_MIX_BYTES/4)
static PyObject *
get_cache_size(PyObject *self, PyObject *args) {
unsigned long block_number;
if (!PyArg_ParseTuple(args, "k", &block_number))
return 0;
if (block_number >= EPOCH_LENGTH * 2048) {
if (block_number >= ETHASH_EPOCH_LENGTH * 2048) {
char error_message[1024];
sprintf(error_message, "Block number must be less than %i (was %lu)", EPOCH_LENGTH * 2048, block_number);
sprintf(error_message, "Block number must be less than %i (was %lu)", ETHASH_EPOCH_LENGTH * 2048, block_number);
PyErr_SetString(PyExc_ValueError, error_message);
return 0;
@ -36,9 +36,9 @@ get_full_size(PyObject *self, PyObject *args) {
unsigned long block_number;
if (!PyArg_ParseTuple(args, "k", &block_number))
return 0;
if (block_number >= EPOCH_LENGTH * 2048) {
if (block_number >= ETHASH_EPOCH_LENGTH * 2048) {
char error_message[1024];
sprintf(error_message, "Block number must be less than %i (was %lu)", EPOCH_LENGTH * 2048, block_number);
sprintf(error_message, "Block number must be less than %i (was %lu)", ETHASH_EPOCH_LENGTH * 2048, block_number);
PyErr_SetString(PyExc_ValueError, error_message);
return 0;
@ -69,7 +69,7 @@ mkcache_bytes(PyObject *self, PyObject *args) {
params.cache_size = (size_t) cache_size;
ethash_cache cache;
cache.mem = malloc(cache_size);
ethash_mkcache(&cache, &params, (ethash_blockhash_t *) seed);
ethash_mkcache(&cache, &params, (ethash_h256_t *) seed);
PyObject * val = Py_BuildValue(PY_STRING_FORMAT, cache.mem, cache_size);
free(cache.mem);
return val;
@ -92,9 +92,9 @@ calc_dataset_bytes(PyObject *self, PyObject *args) {
return 0;
}
if (cache_size % HASH_BYTES != 0) {
if (cache_size % ETHASH_HASH_BYTES != 0) {
char error_message[1024];
sprintf(error_message, "The size of the cache must be a multiple of %i bytes (was %i)", HASH_BYTES, cache_size);
sprintf(error_message, "The size of the cache must be a multiple of %i bytes (was %i)", ETHASH_HASH_BYTES, cache_size);
PyErr_SetString(PyExc_ValueError, error_message);
return 0;
}
@ -127,9 +127,9 @@ hashimoto_light(PyObject *self, PyObject *args) {
PyErr_SetString(PyExc_ValueError, error_message);
return 0;
}
if (cache_size % HASH_BYTES != 0) {
if (cache_size % ETHASH_HASH_BYTES != 0) {
char error_message[1024];
sprintf(error_message, "The size of the cache must be a multiple of %i bytes (was %i)", HASH_BYTES, cache_size);
sprintf(error_message, "The size of the cache must be a multiple of %i bytes (was %i)", ETHASH_HASH_BYTES, cache_size);
PyErr_SetString(PyExc_ValueError, error_message);
return 0;
}
@ -146,7 +146,7 @@ hashimoto_light(PyObject *self, PyObject *args) {
params.full_size = (size_t) full_size;
ethash_cache cache;
cache.mem = (void *) cache_bytes;
ethash_light(&out, &cache, &params, (ethash_blockhash_t *) header, nonce);
ethash_light(&out, &cache, &params, (ethash_h256_t *) header, nonce);
return Py_BuildValue("{" PY_CONST_STRING_FORMAT ":" PY_STRING_FORMAT "," PY_CONST_STRING_FORMAT ":" PY_STRING_FORMAT "}",
"mix digest", &out.mix_hash, 32,
"result", &out.result, 32);
@ -181,7 +181,7 @@ hashimoto_full(PyObject *self, PyObject *args) {
ethash_return_value out;
ethash_params params;
params.full_size = (size_t) full_size;
ethash_full(&out, (void *) full_bytes, &params, (ethash_blockhash_t *) header, nonce);
ethash_full(&out, (void *) full_bytes, &params, (ethash_h256_t *) header, nonce);
return Py_BuildValue("{" PY_CONST_STRING_FORMAT ":" PY_STRING_FORMAT ", " PY_CONST_STRING_FORMAT ":" PY_STRING_FORMAT "}",
"mix digest", &out.mix_hash, 32,
"result", &out.result, 32);
@ -227,9 +227,9 @@ mine(PyObject *self, PyObject *args) {
// TODO: Multi threading?
do {
ethash_full(&out, (void *) full_bytes, &params, (const ethash_blockhash_t *) header, nonce++);
ethash_full(&out, (void *) full_bytes, &params, (const ethash_h256_t *) header, nonce++);
// TODO: disagrees with the spec https://github.com/ethereum/wiki/wiki/Ethash#mining
} while (!ethash_check_difficulty(&out.result, (const ethash_blockhash_t *) difficulty));
} while (!ethash_check_difficulty(&out.result, (const ethash_h256_t *) difficulty));
return Py_BuildValue("{" PY_CONST_STRING_FORMAT ":" PY_STRING_FORMAT ", " PY_CONST_STRING_FORMAT ":" PY_STRING_FORMAT ", " PY_CONST_STRING_FORMAT ":K}",
"mix digest", &out.mix_hash, 32,
@ -243,15 +243,14 @@ get_seedhash(PyObject *self, PyObject *args) {
unsigned long block_number;
if (!PyArg_ParseTuple(args, "k", &block_number))
return 0;
if (block_number >= EPOCH_LENGTH * 2048) {
if (block_number >= ETHASH_EPOCH_LENGTH * 2048) {
char error_message[1024];
sprintf(error_message, "Block number must be less than %i (was %lu)", EPOCH_LENGTH * 2048, block_number);
sprintf(error_message, "Block number must be less than %i (was %lu)", ETHASH_EPOCH_LENGTH * 2048, block_number);
PyErr_SetString(PyExc_ValueError, error_message);
return 0;
}
ethash_blockhash_t seedhash;
ethash_get_seedhash(&seedhash, block_number);
ethash_h256_t seedhash = ethash_get_seedhash(block_number);
return Py_BuildValue(PY_STRING_FORMAT, (char *) &seedhash, 32);
}
@ -306,17 +305,17 @@ static struct PyModuleDef PyethashModule = {
PyMODINIT_FUNC PyInit_pyethash(void) {
PyObject *module = PyModule_Create(&PyethashModule);
// Following Spec: https://github.com/ethereum/wiki/wiki/Ethash#definitions
PyModule_AddIntConstant(module, "REVISION", (long) REVISION);
PyModule_AddIntConstant(module, "DATASET_BYTES_INIT", (long) DATASET_BYTES_INIT);
PyModule_AddIntConstant(module, "DATASET_BYTES_GROWTH", (long) DATASET_BYTES_GROWTH);
PyModule_AddIntConstant(module, "CACHE_BYTES_INIT", (long) CACHE_BYTES_INIT);
PyModule_AddIntConstant(module, "CACHE_BYTES_GROWTH", (long) CACHE_BYTES_GROWTH);
PyModule_AddIntConstant(module, "EPOCH_LENGTH", (long) EPOCH_LENGTH);
PyModule_AddIntConstant(module, "MIX_BYTES", (long) MIX_BYTES);
PyModule_AddIntConstant(module, "HASH_BYTES", (long) HASH_BYTES);
PyModule_AddIntConstant(module, "DATASET_PARENTS", (long) DATASET_PARENTS);
PyModule_AddIntConstant(module, "CACHE_ROUNDS", (long) CACHE_ROUNDS);
PyModule_AddIntConstant(module, "ACCESSES", (long) ACCESSES);
PyModule_AddIntConstant(module, "REVISION", (long) ETHASH_REVISION);
PyModule_AddIntConstant(module, "DATASET_BYTES_INIT", (long) ETHASH_DATASET_BYTES_INIT);
PyModule_AddIntConstant(module, "DATASET_BYTES_GROWTH", (long) ETHASH_DATASET_BYTES_GROWTH);
PyModule_AddIntConstant(module, "CACHE_BYTES_INIT", (long) ETHASH_CACHE_BYTES_INIT);
PyModule_AddIntConstant(module, "CACHE_BYTES_GROWTH", (long) ETHASH_CACHE_BYTES_GROWTH);
PyModule_AddIntConstant(module, "EPOCH_LENGTH", (long) ETHASH_EPOCH_LENGTH);
PyModule_AddIntConstant(module, "MIX_BYTES", (long) ETHASH_MIX_BYTES);
PyModule_AddIntConstant(module, "HASH_BYTES", (long) ETHASH_HASH_BYTES);
PyModule_AddIntConstant(module, "DATASET_PARENTS", (long) ETHASH_DATASET_PARENTS);
PyModule_AddIntConstant(module, "CACHE_ROUNDS", (long) ETHASH_CACHE_ROUNDS);
PyModule_AddIntConstant(module, "ACCESSES", (long) ETHASH_ACCESSES);
return module;
}
#else
@ -324,16 +323,16 @@ PyMODINIT_FUNC
initpyethash(void) {
PyObject *module = Py_InitModule("pyethash", PyethashMethods);
// Following Spec: https://github.com/ethereum/wiki/wiki/Ethash#definitions
PyModule_AddIntConstant(module, "REVISION", (long) REVISION);
PyModule_AddIntConstant(module, "DATASET_BYTES_INIT", (long) DATASET_BYTES_INIT);
PyModule_AddIntConstant(module, "DATASET_BYTES_GROWTH", (long) DATASET_BYTES_GROWTH);
PyModule_AddIntConstant(module, "CACHE_BYTES_INIT", (long) CACHE_BYTES_INIT);
PyModule_AddIntConstant(module, "CACHE_BYTES_GROWTH", (long) CACHE_BYTES_GROWTH);
PyModule_AddIntConstant(module, "EPOCH_LENGTH", (long) EPOCH_LENGTH);
PyModule_AddIntConstant(module, "MIX_BYTES", (long) MIX_BYTES);
PyModule_AddIntConstant(module, "HASH_BYTES", (long) HASH_BYTES);
PyModule_AddIntConstant(module, "DATASET_PARENTS", (long) DATASET_PARENTS);
PyModule_AddIntConstant(module, "CACHE_ROUNDS", (long) CACHE_ROUNDS);
PyModule_AddIntConstant(module, "ACCESSES", (long) ACCESSES);
PyModule_AddIntConstant(module, "REVISION", (long) ETHASH_REVISION);
PyModule_AddIntConstant(module, "DATASET_BYTES_INIT", (long) ETHASH_DATASET_BYTES_INIT);
PyModule_AddIntConstant(module, "DATASET_BYTES_GROWTH", (long) ETHASH_DATASET_BYTES_GROWTH);
PyModule_AddIntConstant(module, "CACHE_BYTES_INIT", (long) ETHASH_CACHE_BYTES_INIT);
PyModule_AddIntConstant(module, "CACHE_BYTES_GROWTH", (long) ETHASH_CACHE_BYTES_GROWTH);
PyModule_AddIntConstant(module, "EPOCH_LENGTH", (long) ETHASH_EPOCH_LENGTH);
PyModule_AddIntConstant(module, "MIX_BYTES", (long) ETHASH_MIX_BYTES);
PyModule_AddIntConstant(module, "HASH_BYTES", (long) ETHASH_HASH_BYTES);
PyModule_AddIntConstant(module, "DATASET_PARENTS", (long) ETHASH_DATASET_PARENTS);
PyModule_AddIntConstant(module, "CACHE_ROUNDS", (long) ETHASH_CACHE_ROUNDS);
PyModule_AddIntConstant(module, "ACCESSES", (long) ETHASH_ACCESSES);
}
#endif

13
Godeps/_workspace/src/github.com/ethereum/ethash/test/c/CMakeLists.txt generated vendored
View File

@ -27,13 +27,16 @@ IF( NOT Boost_FOUND )
find_package(Boost 1.48.0 COMPONENTS unit_test_framework system filesystem)
ENDIF()
IF( Boost_FOUND )
IF (Boost_FOUND)
message(STATUS "boost header: ${Boost_INCLUDE_DIRS}")
message(STATUS "boost libs : ${Boost_LIBRARIES}")
include_directories( ${Boost_INCLUDE_DIR} )
include_directories(../../src)
link_directories ( ${Boost_LIBRARY_DIRS} )
link_directories(${Boost_LIBRARY_DIRS})
file(GLOB HEADERS "*.h")
if (NOT MSVC)
if ((NOT MSVC) AND (NOT APPLE))
ADD_DEFINITIONS(-DBOOST_TEST_DYN_LINK)
endif()
if (NOT CRYPTOPP_FOUND)
@ -48,11 +51,11 @@ IF( Boost_FOUND )
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 ")
endif()
add_executable (Test test.cpp ${HEADERS})
add_executable (Test "./test.cpp" ${HEADERS})
target_link_libraries(Test ${ETHHASH_LIBS})
target_link_libraries(Test ${Boost_FILESYSTEM_LIBRARIES})
target_link_libraries(Test ${Boost_SYSTEM_LIBRARIES})
target_link_libraries (Test ${Boost_UNIT_TEST_FRAMEWORK_LIBRARY})
target_link_libraries(Test ${Boost_UNIT_TEST_FRAMEWORK_LIBRARIES})
if (CRYPTOPP_FOUND)
TARGET_LINK_LIBRARIES(Test ${CRYPTOPP_LIBRARIES})

879
Godeps/_workspace/src/github.com/ethereum/ethash/test/c/test.cpp generated vendored
View File

@ -12,6 +12,11 @@
#include <libethash/sha3.h>
#endif // WITH_CRYPTOPP
#ifdef _WIN32
#include <windows.h>
#include <Shlobj.h>
#endif
#define BOOST_TEST_MODULE Daggerhashimoto
#define BOOST_TEST_MAIN
@ -22,367 +27,609 @@
#include <boost/test/unit_test.hpp>
using namespace std;
using byte = uint8_t;
using bytes = std::vector<byte>;
namespace fs = boost::filesystem;
// Just an alloca "wrapper" to silence uint64_t to size_t conversion warnings in windows
// consider replacing alloca calls with something better though!
#define our_alloca(param__) alloca((size_t)(param__))
std::string bytesToHexString(const uint8_t *str, const uint64_t s) {
std::ostringstream ret;
for (size_t i = 0; i < s; ++i)
ret << std::hex << std::setfill('0') << std::setw(2) << std::nouppercase << (int) str[i];
// some functions taken from eth::dev for convenience.
std::string bytesToHexString(const uint8_t *str, const uint64_t s)
{
std::ostringstream ret;
return ret.str();
for (size_t i = 0; i < s; ++i)
ret << std::hex << std::setfill('0') << std::setw(2) << std::nouppercase << (int) str[i];
return ret.str();
}
std::string blockhashToHexString(ethash_blockhash_t *hash) {
return bytesToHexString((uint8_t*)hash, 32);
std::string blockhashToHexString(ethash_h256_t* _hash)
{
return bytesToHexString((uint8_t*)_hash, 32);
}
int fromHex(char _i)
{
if (_i >= '0' && _i <= '9')
return _i - '0';
if (_i >= 'a' && _i <= 'f')
return _i - 'a' + 10;
if (_i >= 'A' && _i <= 'F')
return _i - 'A' + 10;
BOOST_REQUIRE_MESSAGE(false, "should never get here");
return -1;
}
bytes hexStringToBytes(std::string const& _s)
{
unsigned s = (_s[0] == '0' && _s[1] == 'x') ? 2 : 0;
std::vector<uint8_t> ret;
ret.reserve((_s.size() - s + 1) / 2);
if (_s.size() % 2)
try
{
ret.push_back(fromHex(_s[s++]));
}
catch (...)
{
ret.push_back(0);
}
for (unsigned i = s; i < _s.size(); i += 2)
try
{
ret.push_back((byte)(fromHex(_s[i]) * 16 + fromHex(_s[i + 1])));
}
catch (...){
ret.push_back(0);
}
return ret;
}
ethash_h256_t stringToBlockhash(std::string const& _s)
{
ethash_h256_t ret;
bytes b = hexStringToBytes(_s);
memcpy(&ret, b.data(), b.size());
return ret;
}
BOOST_AUTO_TEST_CASE(fnv_hash_check) {
uint32_t x = 1235U;
const uint32_t
y = 9999999U,
expected = (FNV_PRIME * x) ^y;
uint32_t x = 1235U;
const uint32_t
y = 9999999U,
expected = (FNV_PRIME * x) ^y;
x = fnv_hash(x, y);
x = fnv_hash(x, y);
BOOST_REQUIRE_MESSAGE(x == expected,
"\nexpected: " << expected << "\n"
<< "actual: " << x << "\n");
BOOST_REQUIRE_MESSAGE(x == expected,
"\nexpected: " << expected << "\n"
<< "actual: " << x << "\n");
}
BOOST_AUTO_TEST_CASE(SHA256_check) {
ethash_blockhash_t input;
ethash_blockhash_t out;
memcpy(&input, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
SHA3_256(&out, (uint8_t*)&input, 32);
const std::string
expected = "2b5ddf6f4d21c23de216f44d5e4bdc68e044b71897837ea74c83908be7037cd7",
actual = bytesToHexString((uint8_t*)&out, 32);
BOOST_REQUIRE_MESSAGE(expected == actual,
"\nexpected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
ethash_h256_t input;
ethash_h256_t out;
memcpy(&input, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
SHA3_256(&out, (uint8_t*)&input, 32);
const std::string
expected = "2b5ddf6f4d21c23de216f44d5e4bdc68e044b71897837ea74c83908be7037cd7",
actual = bytesToHexString((uint8_t*)&out, 32);
BOOST_REQUIRE_MESSAGE(expected == actual,
"\nexpected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
}
BOOST_AUTO_TEST_CASE(SHA512_check) {
uint8_t input[64], out[64];
memcpy(input, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 64);
SHA3_512(out, input, 64);
const std::string
expected = "0be8a1d334b4655fe58c6b38789f984bb13225684e86b20517a55ab2386c7b61c306f25e0627c60064cecd6d80cd67a82b3890bd1289b7ceb473aad56a359405",
actual = bytesToHexString(out, 64);
BOOST_REQUIRE_MESSAGE(expected == actual,
"\nexpected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
uint8_t input[64], out[64];
memcpy(input, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 64);
SHA3_512(out, input, 64);
const std::string
expected = "0be8a1d334b4655fe58c6b38789f984bb13225684e86b20517a55ab2386c7b61c306f25e0627c60064cecd6d80cd67a82b3890bd1289b7ceb473aad56a359405",
actual = bytesToHexString(out, 64);
BOOST_REQUIRE_MESSAGE(expected == actual,
"\nexpected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
}
BOOST_AUTO_TEST_CASE(test_swap_endian32) {
uint32_t v32 = (uint32_t)0xBAADF00D;
v32 = ethash_swap_u32(v32);
BOOST_REQUIRE_EQUAL(v32, (uint32_t)0x0DF0ADBA);
}
BOOST_AUTO_TEST_CASE(test_swap_endian64) {
uint64_t v64 = (uint64_t)0xFEE1DEADDEADBEEF;
v64 = ethash_swap_u64(v64);
BOOST_REQUIRE_EQUAL(v64, (uint64_t)0xEFBEADDEADDEE1FE);
}
BOOST_AUTO_TEST_CASE(ethash_params_init_genesis_check) {
ethash_params params;
ethash_params_init(&params, 0);
BOOST_REQUIRE_MESSAGE(params.full_size < DATASET_BYTES_INIT,
"\nfull size: " << params.full_size << "\n"
<< "should be less than or equal to: " << DATASET_BYTES_INIT << "\n");
BOOST_REQUIRE_MESSAGE(params.full_size + 20 * MIX_BYTES >= DATASET_BYTES_INIT,
"\nfull size + 20*MIX_BYTES: " << params.full_size + 20 * MIX_BYTES << "\n"
<< "should be greater than or equal to: " << DATASET_BYTES_INIT << "\n");
BOOST_REQUIRE_MESSAGE(params.cache_size < DATASET_BYTES_INIT / 32,
"\ncache size: " << params.cache_size << "\n"
<< "should be less than or equal to: " << DATASET_BYTES_INIT / 32 << "\n");
uint64_t full_size = ethash_get_datasize(0);
uint64_t cache_size = ethash_get_cachesize(0);
BOOST_REQUIRE_MESSAGE(full_size < ETHASH_DATASET_BYTES_INIT,
"\nfull size: " << full_size << "\n"
<< "should be less than or equal to: " << ETHASH_DATASET_BYTES_INIT << "\n");
BOOST_REQUIRE_MESSAGE(full_size + 20 * ETHASH_MIX_BYTES >= ETHASH_DATASET_BYTES_INIT,
"\nfull size + 20*MIX_BYTES: " << full_size + 20 * ETHASH_MIX_BYTES << "\n"
<< "should be greater than or equal to: " << ETHASH_DATASET_BYTES_INIT << "\n");
BOOST_REQUIRE_MESSAGE(cache_size < ETHASH_DATASET_BYTES_INIT / 32,
"\ncache size: " << cache_size << "\n"
<< "should be less than or equal to: " << ETHASH_DATASET_BYTES_INIT / 32 << "\n");
}
BOOST_AUTO_TEST_CASE(ethash_params_init_genesis_calcifide_check) {
ethash_params params;
ethash_params_init(&params, 0);
const uint32_t expected_full_size = 1073739904;
const uint32_t expected_cache_size = 16776896;
BOOST_REQUIRE_MESSAGE(params.full_size == expected_full_size,
"\nexpected: " << expected_cache_size << "\n"
<< "actual: " << params.full_size << "\n");
BOOST_REQUIRE_MESSAGE(params.cache_size == expected_cache_size,
"\nexpected: " << expected_cache_size << "\n"
<< "actual: " << params.cache_size << "\n");
}
BOOST_AUTO_TEST_CASE(light_and_full_client_checks) {
ethash_params params;
ethash_blockhash_t seed;
ethash_blockhash_t hash;
ethash_blockhash_t difficulty;
ethash_return_value light_out;
ethash_return_value full_out;
memcpy(&seed, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
memcpy(&hash, "~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
// Set the difficulty
ethash_blockhash_set(&difficulty, 0, 197);
ethash_blockhash_set(&difficulty, 1, 90);
for (int i = 2; i < 32; i++)
ethash_blockhash_set(&difficulty, i, 255);
ethash_params_init(&params, 0);
params.cache_size = 1024;
params.full_size = 1024 * 32;
ethash_cache cache;
cache.mem = our_alloca(params.cache_size);
ethash_mkcache(&cache, &params, &seed);
node *full_mem = (node *) our_alloca(params.full_size);
ethash_compute_full_data(full_mem, &params, &cache);
{
const std::string
expected = "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",
actual = bytesToHexString((uint8_t const *) cache.mem, params.cache_size);
BOOST_REQUIRE_MESSAGE(expected == actual,
"\nexpected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
}
{
node node;
ethash_calculate_dag_item(&node, 0, &params, &cache);
const std::string
actual = bytesToHexString((uint8_t const *) &node, sizeof(node)),
expected = "b1698f829f90b35455804e5185d78f549fcb1bdce2bee006d4d7e68eb154b596be1427769eb1c3c3e93180c760af75f81d1023da6a0ffbe321c153a7c0103597";
BOOST_REQUIRE_MESSAGE(actual == expected,
"\n" << "expected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
}
{
for (int i = 0; i < params.full_size / sizeof(node); ++i) {
for (uint32_t j = 0; j < 32; ++j) {
node expected_node;
ethash_calculate_dag_item(&expected_node, j, &params, &cache);
const std::string
actual = bytesToHexString((uint8_t const *) &(full_mem[j]), sizeof(node)),
expected = bytesToHexString((uint8_t const *) &expected_node, sizeof(node));
BOOST_REQUIRE_MESSAGE(actual == expected,
"\ni: " << j << "\n"
<< "expected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
}
}
}
{
uint64_t nonce = 0x7c7c597c;
ethash_full(&full_out, full_mem, &params, &hash, nonce);
ethash_light(&light_out, &cache, &params, &hash, nonce);
const std::string
light_result_string = blockhashToHexString(&light_out.result),
full_result_string = blockhashToHexString(&full_out.result);
BOOST_REQUIRE_MESSAGE(light_result_string == full_result_string,
"\nlight result: " << light_result_string.c_str() << "\n"
<< "full result: " << full_result_string.c_str() << "\n");
const std::string
light_mix_hash_string = blockhashToHexString(&light_out.mix_hash),
full_mix_hash_string = blockhashToHexString(&full_out.mix_hash);
BOOST_REQUIRE_MESSAGE(full_mix_hash_string == light_mix_hash_string,
"\nlight mix hash: " << light_mix_hash_string.c_str() << "\n"
<< "full mix hash: " << full_mix_hash_string.c_str() << "\n");
ethash_blockhash_t check_hash;
ethash_quick_hash(&check_hash, &hash, nonce, &full_out.mix_hash);
const std::string check_hash_string = blockhashToHexString(&check_hash);
BOOST_REQUIRE_MESSAGE(check_hash_string == full_result_string,
"\ncheck hash string: " << check_hash_string.c_str() << "\n"
<< "full result: " << full_result_string.c_str() << "\n");
}
{
ethash_full(&full_out, full_mem, &params, &hash, 5);
std::string
light_result_string = blockhashToHexString(&light_out.result),
full_result_string = blockhashToHexString(&full_out.result);
BOOST_REQUIRE_MESSAGE(light_result_string != full_result_string,
"\nlight result and full result should differ: " << light_result_string.c_str() << "\n");
ethash_light(&light_out, &cache, &params, &hash, 5);
light_result_string = blockhashToHexString(&light_out.result);
BOOST_REQUIRE_MESSAGE(light_result_string == full_result_string,
"\nlight result and full result should be the same\n"
<< "light result: " << light_result_string.c_str() << "\n"
<< "full result: " << full_result_string.c_str() << "\n");
std::string
light_mix_hash_string = blockhashToHexString(&light_out.mix_hash),
full_mix_hash_string = blockhashToHexString(&full_out.mix_hash);
BOOST_REQUIRE_MESSAGE(full_mix_hash_string == light_mix_hash_string,
"\nlight mix hash: " << light_mix_hash_string.c_str() << "\n"
<< "full mix hash: " << full_mix_hash_string.c_str() << "\n");
BOOST_REQUIRE_MESSAGE(ethash_check_difficulty(&full_out.result, &difficulty),
"ethash_check_difficulty failed"
);
BOOST_REQUIRE_MESSAGE(ethash_quick_check_difficulty(&hash, 5U, &full_out.mix_hash, &difficulty),
"ethash_quick_check_difficulty failed"
);
}
uint64_t full_size = ethash_get_datasize(0);
uint64_t cache_size = ethash_get_cachesize(0);
const uint32_t expected_full_size = 1073739904;
const uint32_t expected_cache_size = 16776896;
BOOST_REQUIRE_MESSAGE(full_size == expected_full_size,
"\nexpected: " << expected_cache_size << "\n"
<< "actual: " << full_size << "\n");
BOOST_REQUIRE_MESSAGE(cache_size == expected_cache_size,
"\nexpected: " << expected_cache_size << "\n"
<< "actual: " << cache_size << "\n");
}
BOOST_AUTO_TEST_CASE(ethash_check_difficulty_check) {
ethash_blockhash_t hash;
ethash_blockhash_t target;
memcpy(&hash, "11111111111111111111111111111111", 32);
memcpy(&target, "22222222222222222222222222222222", 32);
BOOST_REQUIRE_MESSAGE(
ethash_check_difficulty(&hash, &target),
"\nexpected \"" << std::string((char *) &hash, 32).c_str() << "\" to have the same or less difficulty than \"" << std::string((char *) &target, 32).c_str() << "\"\n");
BOOST_REQUIRE_MESSAGE(
ethash_check_difficulty(&hash, &hash), "");
// "\nexpected \"" << hash << "\" to have the same or less difficulty than \"" << hash << "\"\n");
memcpy(&target, "11111111111111111111111111111112", 32);
BOOST_REQUIRE_MESSAGE(
ethash_check_difficulty(&hash, &target), "");
// "\nexpected \"" << hash << "\" to have the same or less difficulty than \"" << target << "\"\n");
memcpy(&target, "11111111111111111111111111111110", 32);
BOOST_REQUIRE_MESSAGE(
!ethash_check_difficulty(&hash, &target), "");
// "\nexpected \"" << hash << "\" to have more difficulty than \"" << target << "\"\n");
ethash_h256_t hash;
ethash_h256_t target;
memcpy(&hash, "11111111111111111111111111111111", 32);
memcpy(&target, "22222222222222222222222222222222", 32);
BOOST_REQUIRE_MESSAGE(
ethash_check_difficulty(&hash, &target),
"\nexpected \"" << std::string((char *) &hash, 32).c_str() << "\" to have the same or less difficulty than \"" << std::string((char *) &target, 32).c_str() << "\"\n");
BOOST_REQUIRE_MESSAGE(
ethash_check_difficulty(&hash, &hash), "");
// "\nexpected \"" << hash << "\" to have the same or less difficulty than \"" << hash << "\"\n");
memcpy(&target, "11111111111111111111111111111112", 32);
BOOST_REQUIRE_MESSAGE(
ethash_check_difficulty(&hash, &target), "");
// "\nexpected \"" << hash << "\" to have the same or less difficulty than \"" << target << "\"\n");
memcpy(&target, "11111111111111111111111111111110", 32);
BOOST_REQUIRE_MESSAGE(
!ethash_check_difficulty(&hash, &target), "");
// "\nexpected \"" << hash << "\" to have more difficulty than \"" << target << "\"\n");
}
BOOST_AUTO_TEST_CASE(test_ethash_io_mutable_name) {
char mutable_name[DAG_MUTABLE_NAME_MAX_SIZE];
// should have at least 8 bytes provided since this is what we test :)
ethash_h256_t seed1 = ethash_h256_static_init(0, 10, 65, 255, 34, 55, 22, 8);
ethash_io_mutable_name(1, &seed1, mutable_name);
BOOST_REQUIRE_EQUAL(0, strcmp(mutable_name, "1_000a41ff22371608"));
ethash_h256_t seed2 = ethash_h256_static_init(0, 0, 0, 0, 0, 0, 0, 0);
ethash_io_mutable_name(44, &seed2, mutable_name);
BOOST_REQUIRE_EQUAL(0, strcmp(mutable_name, "44_0000000000000000"));
}
BOOST_AUTO_TEST_CASE(test_ethash_dir_creation) {
ethash_blockhash_t seedhash;
memset(&seedhash, 0, 32);
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seedhash)
);
ethash_h256_t seedhash;
FILE *f = NULL;
memset(&seedhash, 0, 32);
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seedhash, &f, 64, false)
);
BOOST_REQUIRE(f);
// let's make sure that the directory was created
BOOST_REQUIRE(fs::is_directory(fs::path("./test_ethash_directory/")));
// let's make sure that the directory was created
BOOST_REQUIRE(fs::is_directory(fs::path("./test_ethash_directory/")));
// cleanup
fs::remove_all("./test_ethash_directory/");
}
BOOST_AUTO_TEST_CASE(test_ethash_io_write_files_are_created) {
ethash_blockhash_t seedhash;
static const int blockn = 0;
ethash_get_seedhash(&seedhash, blockn);
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seedhash)
);
// let's make sure that the directory was created
BOOST_REQUIRE(fs::is_directory(fs::path("./test_ethash_directory/")));
ethash_cache cache;
ethash_params params;
uint8_t *data;
uint64_t size;
ethash_params_init(&params, blockn);
params.cache_size = 1024;
params.full_size = 1024 * 32;
cache.mem = our_alloca(params.cache_size);
ethash_mkcache(&cache, &params, &seedhash);
BOOST_REQUIRE(
ethash_io_write("./test_ethash_directory/", &params, seedhash, &cache, &data, &size)
);
BOOST_REQUIRE(fs::exists(fs::path("./test_ethash_directory/full")));
BOOST_REQUIRE(fs::exists(fs::path("./test_ethash_directory/full.info")));
// cleanup
fs::remove_all("./test_ethash_directory/");
free(data);
// cleanup
fclose(f);
fs::remove_all("./test_ethash_directory/");
}
BOOST_AUTO_TEST_CASE(test_ethash_io_memo_file_match) {
ethash_blockhash_t seedhash;
static const int blockn = 0;
ethash_get_seedhash(&seedhash, blockn);
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seedhash)
);
uint64_t full_size;
uint64_t cache_size;
ethash_h256_t seed;
ethash_h256_t hash;
FILE* f;
memcpy(&seed, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
memcpy(&hash, "~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
// let's make sure that the directory was created
BOOST_REQUIRE(fs::is_directory(fs::path("./test_ethash_directory/")));
cache_size = 1024;
full_size = 1024 * 32;
ethash_cache cache;
ethash_params params;
uint8_t *data;
uint64_t size;
ethash_params_init(&params, blockn);
params.cache_size = 1024;
params.full_size = 1024 * 32;
cache.mem = our_alloca(params.cache_size);
ethash_mkcache(&cache, &params, &seedhash);
ethash_light_t light = ethash_light_new_internal(cache_size, &seed);
ethash_full_t full = ethash_full_new_internal(
"./test_ethash_directory/",
seed,
full_size,
light,
NULL
);
BOOST_ASSERT(full);
// let's make sure that the directory was created
BOOST_REQUIRE(fs::is_directory(fs::path("./test_ethash_directory/")));
// delete the full here so that memory is properly unmapped and FILE handler freed
ethash_full_delete(full);
// and check that we have a match when checking again
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MATCH,
ethash_io_prepare("./test_ethash_directory/", seed, &f, full_size, false)
);
BOOST_REQUIRE(f);
BOOST_REQUIRE(
ethash_io_write("./test_ethash_directory/", &params, seedhash, &cache, &data, &size)
);
BOOST_REQUIRE(fs::exists(fs::path("./test_ethash_directory/full")));
BOOST_REQUIRE(fs::exists(fs::path("./test_ethash_directory/full.info")));
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MATCH,
ethash_io_prepare("./test_ethash_directory/", seedhash)
);
// cleanup
fs::remove_all("./test_ethash_directory/");
free(data);
// cleanup
fclose(f);
ethash_light_delete(light);
fs::remove_all("./test_ethash_directory/");
}
// could have used dev::contentsNew but don't wanna try to import
// libdevcore just for one function
static std::vector<char> readFileIntoVector(char const* filename)
BOOST_AUTO_TEST_CASE(test_ethash_io_memo_file_size_mismatch) {
static const int blockn = 0;
ethash_h256_t seedhash = ethash_get_seedhash(blockn);
FILE *f = NULL;
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seedhash, &f, 64, false)
);
BOOST_REQUIRE(f);
fclose(f);
// let's make sure that the directory was created
BOOST_REQUIRE(fs::is_directory(fs::path("./test_ethash_directory/")));
// and check that we get the size mismatch detected if we request diffferent size
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_SIZE_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seedhash, &f, 65, false)
);
// cleanup
fs::remove_all("./test_ethash_directory/");
}
BOOST_AUTO_TEST_CASE(test_ethash_get_default_dirname) {
char result[256];
// this is really not an easy thing to test for in a unit test, so yeah it does look ugly
#ifdef _WIN32
char homedir[256];
BOOST_REQUIRE(SUCCEEDED(SHGetFolderPathW(NULL, CSIDL_PROFILE, NULL, 0, (WCHAR*)homedir)));
BOOST_REQUIRE(ethash_get_default_dirname(result, 256));
std::string res = std::string(homedir) + std::string("\\Appdata\\Ethash\\");
#else
char* homedir = getenv("HOME");
BOOST_REQUIRE(ethash_get_default_dirname(result, 256));
std::string res = std::string(homedir) + std::string("/.ethash/");
#endif
BOOST_CHECK_MESSAGE(strcmp(res.c_str(), result) == 0,
"Expected \"" + res + "\" but got \"" + std::string(result) + "\""
);
}
BOOST_AUTO_TEST_CASE(light_and_full_client_checks) {
uint64_t full_size;
uint64_t cache_size;
ethash_h256_t seed;
ethash_h256_t hash;
ethash_h256_t difficulty;
ethash_return_value_t light_out;
ethash_return_value_t full_out;
memcpy(&seed, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
memcpy(&hash, "~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
// Set the difficulty
ethash_h256_set(&difficulty, 0, 197);
ethash_h256_set(&difficulty, 1, 90);
for (int i = 2; i < 32; i++)
ethash_h256_set(&difficulty, i, 255);
cache_size = 1024;
full_size = 1024 * 32;
ethash_light_t light = ethash_light_new_internal(cache_size, &seed);
ethash_full_t full = ethash_full_new_internal(
"./test_ethash_directory/",
seed,
full_size,
light,
NULL
);
BOOST_ASSERT(full);
{
const std::string
expected = "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",
actual = bytesToHexString((uint8_t const *) light->cache, cache_size);
BOOST_REQUIRE_MESSAGE(expected == actual,
"\nexpected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
}
{
node node;
ethash_calculate_dag_item(&node, 0, light);
const std::string
actual = bytesToHexString((uint8_t const *) &node, sizeof(node)),
expected = "b1698f829f90b35455804e5185d78f549fcb1bdce2bee006d4d7e68eb154b596be1427769eb1c3c3e93180c760af75f81d1023da6a0ffbe321c153a7c0103597";
BOOST_REQUIRE_MESSAGE(actual == expected,
"\n" << "expected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
}
{
for (int i = 0; i < full_size / sizeof(node); ++i) {
for (uint32_t j = 0; j < 32; ++j) {
node expected_node;
ethash_calculate_dag_item(&expected_node, j, light);
const std::string
actual = bytesToHexString((uint8_t const *) &(full->data[j]), sizeof(node)),
expected = bytesToHexString((uint8_t const *) &expected_node, sizeof(node));
BOOST_REQUIRE_MESSAGE(actual == expected,
"\ni: " << j << "\n"
<< "expected: " << expected.c_str() << "\n"
<< "actual: " << actual.c_str() << "\n");
}
}
}
{
uint64_t nonce = 0x7c7c597c;
full_out = ethash_full_compute(full, hash, nonce);
BOOST_REQUIRE(full_out.success);
light_out = ethash_light_compute_internal(light, full_size, hash, nonce);
BOOST_REQUIRE(light_out.success);
const std::string
light_result_string = blockhashToHexString(&light_out.result),
full_result_string = blockhashToHexString(&full_out.result);
BOOST_REQUIRE_MESSAGE(light_result_string == full_result_string,
"\nlight result: " << light_result_string.c_str() << "\n"
<< "full result: " << full_result_string.c_str() << "\n");
const std::string
light_mix_hash_string = blockhashToHexString(&light_out.mix_hash),
full_mix_hash_string = blockhashToHexString(&full_out.mix_hash);
BOOST_REQUIRE_MESSAGE(full_mix_hash_string == light_mix_hash_string,
"\nlight mix hash: " << light_mix_hash_string.c_str() << "\n"
<< "full mix hash: " << full_mix_hash_string.c_str() << "\n");
ethash_h256_t check_hash;
ethash_quick_hash(&check_hash, &hash, nonce, &full_out.mix_hash);
const std::string check_hash_string = blockhashToHexString(&check_hash);
BOOST_REQUIRE_MESSAGE(check_hash_string == full_result_string,
"\ncheck hash string: " << check_hash_string.c_str() << "\n"
<< "full result: " << full_result_string.c_str() << "\n");
}
{
full_out = ethash_full_compute(full, hash, 5);
BOOST_REQUIRE(full_out.success);
std::string
light_result_string = blockhashToHexString(&light_out.result),
full_result_string = blockhashToHexString(&full_out.result);
BOOST_REQUIRE_MESSAGE(light_result_string != full_result_string,
"\nlight result and full result should differ: " << light_result_string.c_str() << "\n");
light_out = ethash_light_compute_internal(light, full_size, hash, 5);
BOOST_REQUIRE(light_out.success);
light_result_string = blockhashToHexString(&light_out.result);
BOOST_REQUIRE_MESSAGE(light_result_string == full_result_string,
"\nlight result and full result should be the same\n"
<< "light result: " << light_result_string.c_str() << "\n"
<< "full result: " << full_result_string.c_str() << "\n");
std::string
light_mix_hash_string = blockhashToHexString(&light_out.mix_hash),
full_mix_hash_string = blockhashToHexString(&full_out.mix_hash);
BOOST_REQUIRE_MESSAGE(full_mix_hash_string == light_mix_hash_string,
"\nlight mix hash: " << light_mix_hash_string.c_str() << "\n"
<< "full mix hash: " << full_mix_hash_string.c_str() << "\n");
BOOST_REQUIRE_MESSAGE(ethash_check_difficulty(&full_out.result, &difficulty),
"ethash_check_difficulty failed"
);
BOOST_REQUIRE_MESSAGE(ethash_quick_check_difficulty(&hash, 5U, &full_out.mix_hash, &difficulty),
"ethash_quick_check_difficulty failed"
);
}
ethash_light_delete(light);
ethash_full_delete(full);
fs::remove_all("./test_ethash_directory/");
}
BOOST_AUTO_TEST_CASE(ethash_full_new_when_dag_exists_with_wrong_size) {
uint64_t full_size;
uint64_t cache_size;
ethash_h256_t seed;
ethash_h256_t hash;
ethash_return_value_t full_out;
ethash_return_value_t light_out;
memcpy(&seed, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
memcpy(&hash, "~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
cache_size = 1024;
full_size = 1024 * 32;
// first make a DAG file of "wrong size"
FILE *f;
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seed, &f, 64, false)
);
fclose(f);
// then create new DAG, which should detect the wrong size and force create a new file
ethash_light_t light = ethash_light_new_internal(cache_size, &seed);
BOOST_ASSERT(light);
ethash_full_t full = ethash_full_new_internal(
"./test_ethash_directory/",
seed,
full_size,
light,
NULL
);
BOOST_ASSERT(full);
{
uint64_t nonce = 0x7c7c597c;
full_out = ethash_full_compute(full, hash, nonce);
BOOST_REQUIRE(full_out.success);
light_out = ethash_light_compute_internal(light, full_size, hash, nonce);
BOOST_REQUIRE(light_out.success);
const std::string
light_result_string = blockhashToHexString(&light_out.result),
full_result_string = blockhashToHexString(&full_out.result);
BOOST_REQUIRE_MESSAGE(light_result_string == full_result_string,
"\nlight result: " << light_result_string.c_str() << "\n"
<< "full result: " << full_result_string.c_str() << "\n");
const std::string
light_mix_hash_string = blockhashToHexString(&light_out.mix_hash),
full_mix_hash_string = blockhashToHexString(&full_out.mix_hash);
BOOST_REQUIRE_MESSAGE(full_mix_hash_string == light_mix_hash_string,
"\nlight mix hash: " << light_mix_hash_string.c_str() << "\n"
<< "full mix hash: " << full_mix_hash_string.c_str() << "\n");
ethash_h256_t check_hash;
ethash_quick_hash(&check_hash, &hash, nonce, &full_out.mix_hash);
const std::string check_hash_string = blockhashToHexString(&check_hash);
BOOST_REQUIRE_MESSAGE(check_hash_string == full_result_string,
"\ncheck hash string: " << check_hash_string.c_str() << "\n"
<< "full result: " << full_result_string.c_str() << "\n");
}
ethash_light_delete(light);
ethash_full_delete(full);
fs::remove_all("./test_ethash_directory/");
}
static bool g_executed = false;
static unsigned g_prev_progress = 0;
static int test_full_callback(unsigned _progress)
{
ifstream ifs(filename, ios::binary|ios::ate);
ifstream::pos_type pos = ifs.tellg();
std::vector<char> result((unsigned int)pos);
ifs.seekg(0, ios::beg);
ifs.read(&result[0], pos);
return result;
g_executed = true;
BOOST_CHECK(_progress >= g_prev_progress);
g_prev_progress = _progress;
return 0;
}
BOOST_AUTO_TEST_CASE(test_ethash_io_memo_file_contents) {
ethash_blockhash_t seedhash;
static const int blockn = 0;
ethash_get_seedhash(&seedhash, blockn);
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seedhash)
);
// let's make sure that the directory was created
BOOST_REQUIRE(fs::is_directory(fs::path("./test_ethash_directory/")));
ethash_cache cache;
ethash_params params;
uint8_t *data;
uint64_t size;
ethash_params_init(&params, blockn);
params.cache_size = 1024;
params.full_size = 1024 * 32;
cache.mem = our_alloca(params.cache_size);
ethash_mkcache(&cache, &params, &seedhash);
BOOST_REQUIRE(
ethash_io_write("./test_ethash_directory/", &params, seedhash, &cache, &data, &size)
);
BOOST_REQUIRE(fs::exists(fs::path("./test_ethash_directory/full")));
BOOST_REQUIRE(fs::exists(fs::path("./test_ethash_directory/full.info")));
char expect_buffer[DAG_MEMO_BYTESIZE];
ethash_io_serialize_info(REVISION, seedhash, expect_buffer);
auto vec = readFileIntoVector("./test_ethash_directory/full.info");
BOOST_REQUIRE_EQUAL(vec.size(), DAG_MEMO_BYTESIZE);
BOOST_REQUIRE(memcmp(expect_buffer, &vec[0], DAG_MEMO_BYTESIZE) == 0);
// cleanup
fs::remove_all("./test_ethash_directory/");
free(data);
static int test_full_callback_that_fails(unsigned _progress)
{
return 1;
}
static int test_full_callback_create_incomplete_dag(unsigned _progress)
{
if (_progress >= 30) {
return 1;
}
return 0;
}
BOOST_AUTO_TEST_CASE(full_client_callback) {
uint64_t full_size;
uint64_t cache_size;
ethash_h256_t seed;
ethash_h256_t hash;
memcpy(&seed, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
memcpy(&hash, "~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
cache_size = 1024;
full_size = 1024 * 32;
ethash_light_t light = ethash_light_new_internal(cache_size, &seed);
ethash_full_t full = ethash_full_new_internal(
"./test_ethash_directory/",
seed,
full_size,
light,
test_full_callback
);
BOOST_ASSERT(full);
BOOST_CHECK(g_executed);
BOOST_REQUIRE_EQUAL(g_prev_progress, 100);
ethash_full_delete(full);
ethash_light_delete(light);
fs::remove_all("./test_ethash_directory/");
}
BOOST_AUTO_TEST_CASE(failing_full_client_callback) {
uint64_t full_size;
uint64_t cache_size;
ethash_h256_t seed;
ethash_h256_t hash;
memcpy(&seed, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
memcpy(&hash, "~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
cache_size = 1024;
full_size = 1024 * 32;
ethash_light_t light = ethash_light_new_internal(cache_size, &seed);
ethash_full_t full = ethash_full_new_internal(
"./test_ethash_directory/",
seed,
full_size,
light,
test_full_callback_that_fails
);
BOOST_ASSERT(!full);
ethash_light_delete(light);
fs::remove_all("./test_ethash_directory/");
}
BOOST_AUTO_TEST_CASE(test_incomplete_dag_file) {
uint64_t full_size;
uint64_t cache_size;
ethash_h256_t seed;
ethash_h256_t hash;
memcpy(&seed, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
memcpy(&hash, "~~~X~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 32);
cache_size = 1024;
full_size = 1024 * 32;
ethash_light_t light = ethash_light_new_internal(cache_size, &seed);
// create a full but stop at 30%, so no magic number is written
ethash_full_t full = ethash_full_new_internal(
"./test_ethash_directory/",
seed,
full_size,
light,
test_full_callback_create_incomplete_dag
);
BOOST_ASSERT(!full);
FILE *f = NULL;
// confirm that we get a size_mismatch because the magic number is missing
BOOST_REQUIRE_EQUAL(
ETHASH_IO_MEMO_SIZE_MISMATCH,
ethash_io_prepare("./test_ethash_directory/", seed, &f, full_size, false)
);
ethash_light_delete(light);
fs::remove_all("./test_ethash_directory/");
}
BOOST_AUTO_TEST_CASE(test_block_verification) {
ethash_light_t light = ethash_light_new(22);
ethash_h256_t seedhash = stringToBlockhash("372eca2454ead349c3df0ab5d00b0b706b23e49d469387db91811cee0358fc6d");
BOOST_ASSERT(light);
ethash_return_value_t ret = ethash_light_compute(
light,
seedhash,
0x495732e0ed7a801c
);
BOOST_REQUIRE_EQUAL(blockhashToHexString(&ret.result), "00000b184f1fdd88bfd94c86c39e65db0c36144d5e43f745f722196e730cb614");
ethash_light_delete(light);
}
// Test of Full DAG creation with the minimal ethash.h API.
// Commented out since travis tests would take too much time.
// Uncomment and run on your own machine if you want to confirm
// it works fine.
#if 0
static int lef_cb(unsigned _progress)
{
printf("CREATING DAG. PROGRESS: %u\n", _progress);
fflush(stdout);
return 0;
}
BOOST_AUTO_TEST_CASE(full_dag_test) {
ethash_light_t light = ethash_light_new(55);
BOOST_ASSERT(light);
ethash_full_t full = ethash_full_new(light, lef_cb);
BOOST_ASSERT(full);
ethash_light_delete(light);
ethash_full_delete(full);
}
#endif

13
Godeps/_workspace/src/github.com/ethereum/ethash/test/c/test.sh generated vendored
View File

@ -3,6 +3,13 @@
# Strict mode
set -e
VALGRIND_ARGS="--tool=memcheck"
VALGRIND_ARGS+=" --leak-check=yes"
VALGRIND_ARGS+=" --track-origins=yes"
VALGRIND_ARGS+=" --show-reachable=yes"
VALGRIND_ARGS+=" --num-callers=20"
VALGRIND_ARGS+=" --track-fds=yes"
SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do
DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
@ -17,3 +24,9 @@ cd $TEST_DIR/build ;
cmake ../../.. > /dev/null
make Test
./test/c/Test
# If we have valgrind also run memory check tests
if hash valgrind 2>/dev/null; then
echo "======== Running tests under valgrind ========";
cd $TEST_DIR/build/ && valgrind $VALGRIND_ARGS ./test/c/Test
fi

82
Godeps/_workspace/src/github.com/ethereum/ethash/test/go/ethash_test.go generated vendored
View File

@ -1,82 +0,0 @@
package ethashTest
import (
"bytes"
"crypto/rand"
"encoding/hex"
"log"
"math/big"
"testing"
"github.com/ethereum/ethash"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/ethdb"
)
func TestEthash(t *testing.T) {
seedHash := make([]byte, 32)
_, err := rand.Read(seedHash)
if err != nil {
panic(err)
}
db, err := ethdb.NewMemDatabase()
if err != nil {
panic(err)
}
blockProcessor, err := core.NewCanonical(5, db)
if err != nil {
panic(err)
}
log.Println("Block Number: ", blockProcessor.ChainManager().CurrentBlock().Number())
e := ethash.New(blockProcessor.ChainManager())
miningHash := make([]byte, 32)
if _, err := rand.Read(miningHash); err != nil {
panic(err)
}
diff := big.NewInt(10000)
log.Println("difficulty", diff)
nonce := uint64(0)
ghash_full := e.FullHash(nonce, miningHash)
log.Printf("ethash full (on nonce): %x %x\n", ghash_full, nonce)
ghash_light := e.LightHash(nonce, miningHash)
log.Printf("ethash light (on nonce): %x %x\n", ghash_light, nonce)
if bytes.Compare(ghash_full, ghash_light) != 0 {
t.Errorf("full: %x, light: %x", ghash_full, ghash_light)
}
}
func TestGetSeedHash(t *testing.T) {
seed0, err := ethash.GetSeedHash(0)
if err != nil {
t.Errorf("Failed to get seedHash for block 0: %v", err)
}
if bytes.Compare(seed0, []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}) != 0 {
log.Printf("seedHash for block 0 should be 0s, was: %v\n", seed0)
}
seed1, err := ethash.GetSeedHash(30000)
if err != nil {
t.Error(err)
}
// From python:
// > from pyethash import get_seedhash
// > get_seedhash(30000)
expectedSeed1, err := hex.DecodeString("290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")
if err != nil {
t.Error(err)
}
if bytes.Compare(seed1, expectedSeed1) != 0 {
log.Printf("seedHash for block 1 should be: %v,\nactual value: %v\n", expectedSeed1, seed1)
}
}

9
Godeps/_workspace/src/github.com/ethereum/ethash/test/test.sh generated vendored
View File

@ -24,8 +24,9 @@ fi
echo -e "\n################# Testing C ##################"
$TEST_DIR/c/test.sh
echo -e "\n################# Testing Python ##################"
$TEST_DIR/python/test.sh
# Temporarily commenting out python tests until they conform to the API
#echo -e "\n################# Testing Python ##################"
#$TEST_DIR/python/test.sh
#echo "################# Testing Go ##################"
#$TEST_DIR/go/test.sh
echo "################# Testing Go ##################"
cd $TEST_DIR/.. && go test -timeout 9999s

34
cmd/geth/main.go
View File

@ -27,8 +27,10 @@ import (
"io/ioutil"
"os"
"path"
"path/filepath"
"runtime"
"strconv"
"strings"
"time"
"github.com/codegangsta/cli"
@ -601,12 +603,32 @@ func dump(ctx *cli.Context) {
}
func makedag(ctx *cli.Context) {
chain, _, _ := utils.GetChain(ctx)
pow := ethash.New(chain)
fmt.Println("making cache")
pow.UpdateCache(0, true)
fmt.Println("making DAG")
pow.UpdateDAG()
args := ctx.Args()
wrongArgs := func() {
utils.Fatalf(`Usage: geth makedag <block number> <outputdir>`)
}
switch {
case len(args) == 2:
blockNum, err := strconv.ParseUint(args[0], 0, 64)
dir := args[1]
if err != nil {
wrongArgs()
} else {
dir = filepath.Clean(dir)
// seems to require a trailing slash
if !strings.HasSuffix(dir, "/") {
dir = dir + "/"
}
_, err = ioutil.ReadDir(dir)
if err != nil {
utils.Fatalf("Can't find dir")
}
fmt.Println("making DAG, this could take awhile...")
ethash.MakeDAG(blockNum, dir)
}
default:
wrongArgs()
}
}
func version(c *cli.Context) {

2
cmd/utils/flags.go
View File

@ -316,7 +316,7 @@ func GetChain(ctx *cli.Context) (*core.ChainManager, common.Database, common.Dat
eventMux := new(event.TypeMux)
chainManager := core.NewChainManager(blockDb, stateDb, eventMux)
pow := ethash.New(chainManager)
pow := ethash.New()
txPool := core.NewTxPool(eventMux, chainManager.State, chainManager.GasLimit)
blockProcessor := core.NewBlockProcessor(stateDb, extraDb, pow, txPool, chainManager, eventMux)
chainManager.SetProcessor(blockProcessor)

4
core/chain_makers.go
View File

@ -14,8 +14,8 @@ import (
// So we can generate blocks easily
type FakePow struct{}
func (f FakePow) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte, []byte) {
return 0, nil, nil
func (f FakePow) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte) {
return 0, nil
}
func (f FakePow) Verify(block pow.Block) bool { return true }
func (f FakePow) GetHashrate() int64 { return 0 }

3
eth/backend.go
View File

@ -220,7 +220,7 @@ func New(config *Config) (*Ethereum, error) {
eth.chainManager = core.NewChainManager(blockDb, stateDb, eth.EventMux())
eth.downloader = downloader.New(eth.chainManager.HasBlock, eth.chainManager.GetBlock)
eth.pow = ethash.New(eth.chainManager)
eth.pow = ethash.New()
eth.txPool = core.NewTxPool(eth.EventMux(), eth.chainManager.State, eth.chainManager.GasLimit)
eth.blockProcessor = core.NewBlockProcessor(stateDb, extraDb, eth.pow, eth.txPool, eth.chainManager, eth.EventMux())
eth.chainManager.SetProcessor(eth.blockProcessor)
@ -318,7 +318,6 @@ func (s *Ethereum) PeersInfo() (peersinfo []*PeerInfo) {
func (s *Ethereum) ResetWithGenesisBlock(gb *types.Block) {
s.chainManager.ResetWithGenesisBlock(gb)
s.pow.UpdateCache(0, true)
}
func (s *Ethereum) StartMining() error {

2
miner/agent.go
View File

@ -85,7 +85,7 @@ func (self *CpuMiner) mine(block *types.Block) {
self.chMu.Unlock()
// Mine
nonce, mixDigest, _ := self.pow.Search(block, self.quitCurrentOp)
nonce, mixDigest := self.pow.Search(block, self.quitCurrentOp)
if nonce != 0 {
block.SetNonce(nonce)
block.Header().MixDigest = common.BytesToHash(mixDigest)

7
miner/miner.go
View File

@ -3,7 +3,6 @@ package miner
import (
"math/big"
"github.com/ethereum/ethash"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
@ -41,13 +40,7 @@ func (self *Miner) Mining() bool {
func (self *Miner) Start(coinbase common.Address) {
self.mining = true
self.worker.coinbase = coinbase
if self.threads > 0 {
self.pow.(*ethash.Ethash).UpdateDAG()
}
self.worker.start()
self.worker.commitNewWork()
}

6
pow/dagger/dagger.go
View File

@ -6,8 +6,8 @@ import (
"math/rand"
"time"
"github.com/ethereum/go-ethereum/crypto/sha3"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto/sha3"
"github.com/ethereum/go-ethereum/logger"
)
@ -44,7 +44,7 @@ func (dag *Dagger) Find(obj *big.Int, resChan chan int64) {
resChan <- 0
}
func (dag *Dagger) Search(hash, diff *big.Int) ([]byte, []byte, []byte) {
func (dag *Dagger) Search(hash, diff *big.Int) (uint64, []byte) {
// TODO fix multi threading. Somehow it results in the wrong nonce
amountOfRoutines := 1
@ -69,7 +69,7 @@ func (dag *Dagger) Search(hash, diff *big.Int) ([]byte, []byte, []byte) {
}
}
return big.NewInt(res).Bytes(), nil, nil
return uint64(res), nil
}
func (dag *Dagger) Verify(hash, diff, nonce *big.Int) bool {

8
pow/ezp/pow.go
View File

@ -32,7 +32,7 @@ func (pow *EasyPow) Turbo(on bool) {
pow.turbo = on
}
func (pow *EasyPow) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte, []byte) {
func (pow *EasyPow) Search(block pow.Block, stop <-chan struct{}) (uint64, []byte) {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
hash := block.HashNoNonce()
diff := block.Difficulty()
@ -57,7 +57,7 @@ empty:
for {
select {
case <-stop:
return 0, nil, nil
return 0, nil
default:
i++
@ -67,7 +67,7 @@ empty:
sha := uint64(r.Int63())
if verify(hash, diff, sha) {
return sha, nil, nil
return sha, nil
}
}
@ -76,7 +76,7 @@ empty:
}
}
return 0, nil, nil
return 0, nil
}
func (pow *EasyPow) Verify(block pow.Block) bool {

2
pow/pow.go
View File

@ -1,7 +1,7 @@
package pow
type PoW interface {
Search(block Block, stop <-chan struct{}) (uint64, []byte, []byte)
Search(block Block, stop <-chan struct{}) (uint64, []byte)
Verify(block Block) bool
GetHashrate() int64
Turbo(bool)

14
tests/block_test.go
View File

@ -13,42 +13,37 @@ import (
// TODO: refactor test setup & execution to better align with vm and tx tests
func TestBcValidBlockTests(t *testing.T) {
t.Skip("Skipped in lieu of performance fixes.")
runBlockTestsInFile("files/BlockTests/bcValidBlockTest.json", []string{}, t)
}
func TestBcUncleTests(t *testing.T) {
t.Skip("Skipped in lieu of performance fixes.")
t.Skip("Skipped until https://github.com/ethereum/go-ethereum/pull/857 is merged.")
runBlockTestsInFile("files/BlockTests/bcUncleTest.json", []string{}, t)
}
func TestBcUncleHeaderValidityTests(t *testing.T) {
t.Skip("Skipped in lieu of performance fixes.")
t.Skip("Skipped until https://github.com/ethereum/go-ethereum/pull/857 is merged.")
runBlockTestsInFile("files/BlockTests/bcUncleHeaderValiditiy.json", []string{}, t)
}
func TestBcInvalidHeaderTests(t *testing.T) {
t.Skip("Skipped in lieu of performance fixes.")
runBlockTestsInFile("files/BlockTests/bcInvalidHeaderTest.json", []string{}, t)
}
func TestBcInvalidRLPTests(t *testing.T) {
t.Skip("Skipped in lieu of performance fixes.")
runBlockTestsInFile("files/BlockTests/bcInvalidRLPTest.json", []string{}, t)
}
func TestBcJSAPITests(t *testing.T) {
t.Skip("Skipped in lieu of performance fixes.")
runBlockTestsInFile("files/BlockTests/bcJS_API_Test.json", []string{}, t)
}
func TestBcRPCAPITests(t *testing.T) {
t.Skip("Skipped in lieu of performance fixes.")
t.Skip("Skipped until https://github.com/ethereum/go-ethereum/pull/857 is merged.")
runBlockTestsInFile("files/BlockTests/bcRPC_API_Test.json", []string{}, t)
}
func TestBcForkBlockTests(t *testing.T) {
t.Skip("Skipped in lieu of performance fixes.")
runBlockTestsInFile("files/BlockTests/bcForkBlockTest.json", []string{}, t)
}
@ -71,7 +66,6 @@ func runBlockTestsInFile(filepath string, snafus []string, t *testing.T) {
}
func runBlockTest(name string, test *BlockTest, t *testing.T) {
t.Log("Running test: ", name)
cfg := testEthConfig()
ethereum, err := eth.New(cfg)
if err != nil {
@ -100,7 +94,7 @@ func runBlockTest(name string, test *BlockTest, t *testing.T) {
if err = test.ValidatePostState(statedb); err != nil {
t.Fatal("post state validation failed: %v", err)
}
t.Log("Test passed: ", name)
t.Log("Test passed: ", name)
}
func testEthConfig() *eth.Config {