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Added more performance measurement infrastructure

This commit is contained in:
Clifford Wolf 2013-11-22 14:08:10 +01:00
parent e4429c480e
commit 058ceda6a0
2 changed files with 43 additions and 2 deletions
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4
Makefile
View File

@ -20,7 +20,7 @@ all: top-all
CXXFLAGS = -Wall -Wextra -ggdb -I"$(shell pwd)" -MD -D_YOSYS_ -fPIC
LDFLAGS = -rdynamic
LDLIBS = -lstdc++ -lreadline -lm -ldl
LDLIBS = -lstdc++ -lreadline -lm -ldl -lrt
QMAKE = qmake-qt4
YOSYS_VER := 0.0.x
@ -155,7 +155,7 @@ config-release: clean
echo 'CONFIG := release' > Makefile.conf
config-gprof: clean
echo 'CONFIG := release' > Makefile.conf
echo 'CONFIG := gcc-debug' > Makefile.conf
echo 'ENABLE_GPROF := 1' >> Makefile.conf
config-sudo:

41
kernel/log.h
View File

@ -22,6 +22,7 @@
#include "kernel/rtlil.h"
#include <stdio.h>
#include <time.h>
#include <vector>
extern std::vector<FILE*> log_files;
@ -52,4 +53,44 @@ const char *log_signal(const RTLIL::SigSpec &sig, bool autoint = true);
#define log_abort() log_error("Abort in %s:%d.\n", __FILE__, __LINE__)
#define log_assert(_assert_expr_) do { if (_assert_expr_) break; log_error("Assert `%s' failed in %s:%d.\n", #_assert_expr_, __FILE__, __LINE__); } while (0)
// simple timer for performance measurements
// toggle the '#if 1' to get a baseline for the perormance penalty added by the measurement
struct PerformanceTimer
{
#if 1
int64_t total_ns;
PerformanceTimer() {
total_ns = 0;
}
static int64_t query() {
struct timespec ts;
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
return int64_t(ts.tv_sec)*1000000000 + ts.tv_nsec;
}
void reset() {
total_ns = 0;
}
void add() {
total_ns += query();
}
void sub() {
total_ns -= query();
}
float sec() const {
return total_ns * 1e-9;
}
#else
void reset() { }
void add() { }
void sub() { }
float sec() const { return 0; }
#endif
};
#endif