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core: remove unused fields (#29569)

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rjl493456442 2024-04-18 14:48:50 +08:00 committed by GitHub
parent 5f95145308
commit b5902cf595
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1 changed files with 15 additions and 23 deletions
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38
core/headerchain.go
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@ -17,12 +17,9 @@
package core
import (
crand "crypto/rand"
"errors"
"fmt"
"math"
"math/big"
mrand "math/rand"
"sync/atomic"
"time"
@ -43,45 +40,41 @@ const (
numberCacheLimit = 2048
)
// HeaderChain implements the basic block header chain logic that is shared by
// core.BlockChain and light.LightChain. It is not usable in itself, only as
// a part of either structure.
// HeaderChain implements the basic block header chain logic. It is not usable
// in itself, but rather an internal structure of core.Blockchain.
//
// HeaderChain is responsible for maintaining the header chain including the
// header query and updating.
//
// The components maintained by headerchain includes: (1) total difficulty
// (2) header (3) block hash -> number mapping (4) canonical number -> hash mapping
// and (5) head header flag.
// The data components maintained by HeaderChain include:
//
// It is not thread safe either, the encapsulating chain structures should do
// the necessary mutex locking/unlocking.
// - total difficulty
// - header
// - block hash -> number mapping
// - canonical number -> hash mapping
// - head header flag.
//
// It is not thread safe, the encapsulating chain structures should do the
// necessary mutex locking/unlocking.
type HeaderChain struct {
config *params.ChainConfig
chainDb ethdb.Database
genesisHeader *types.Header
currentHeader atomic.Value // Current head of the header chain (may be above the block chain!)
currentHeaderHash common.Hash // Hash of the current head of the header chain (prevent recomputing all the time)
currentHeader atomic.Pointer[types.Header] // Current head of the header chain (maybe above the block chain!)
currentHeaderHash common.Hash // Hash of the current head of the header chain (prevent recomputing all the time)
headerCache *lru.Cache[common.Hash, *types.Header]
tdCache *lru.Cache[common.Hash, *big.Int] // most recent total difficulties
numberCache *lru.Cache[common.Hash, uint64] // most recent block numbers
procInterrupt func() bool
rand *mrand.Rand
engine consensus.Engine
engine consensus.Engine
}
// NewHeaderChain creates a new HeaderChain structure. ProcInterrupt points
// to the parent's interrupt semaphore.
func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine consensus.Engine, procInterrupt func() bool) (*HeaderChain, error) {
// Seed a fast but crypto originating random generator
seed, err := crand.Int(crand.Reader, big.NewInt(math.MaxInt64))
if err != nil {
return nil, err
}
hc := &HeaderChain{
config: config,
chainDb: chainDb,
@ -89,7 +82,6 @@ func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine c
tdCache: lru.NewCache[common.Hash, *big.Int](tdCacheLimit),
numberCache: lru.NewCache[common.Hash, uint64](numberCacheLimit),
procInterrupt: procInterrupt,
rand: mrand.New(mrand.NewSource(seed.Int64())),
engine: engine,
}
hc.genesisHeader = hc.GetHeaderByNumber(0)
@ -525,7 +517,7 @@ func (hc *HeaderChain) GetCanonicalHash(number uint64) common.Hash {
// CurrentHeader retrieves the current head header of the canonical chain. The
// header is retrieved from the HeaderChain's internal cache.
func (hc *HeaderChain) CurrentHeader() *types.Header {
return hc.currentHeader.Load().(*types.Header)
return hc.currentHeader.Load()
}
// SetCurrentHeader sets the in-memory head header marker of the canonical chan