105 lines
2.5 KiB
C++
105 lines
2.5 KiB
C++
|
#include "benchmark.h"
|
||
|
|
|
||
|
|
#include <cstring>
|
||
|
|
#include <cstdio>
|
||
|
|
#include <sys/resource.h>
|
||
|
|
|
||
|
|
#include <iostream>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
using std::cerr;
|
||
|
|
using std::endl;
|
||
|
|
using std::string;
|
||
|
|
using std::vector;
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
/* Subtract the `struct timeval' values X and Y,
|
||
|
|
storing the result in RESULT.
|
||
|
|
Return 1 if the difference is negative, otherwise 0. */
|
||
|
|
int timeval_subtract (
|
||
|
|
struct timeval *result, struct timeval *x, struct timeval* y) {
|
||
|
|
/* Perform the carry for the later subtraction by updating y. */
|
||
|
|
if (x->tv_usec < y->tv_usec) {
|
||
|
|
int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
|
||
|
|
y->tv_usec -= 1000000 * nsec;
|
||
|
|
y->tv_sec += nsec;
|
||
|
|
}
|
||
|
|
if (x->tv_usec - y->tv_usec > 1000000) {
|
||
|
|
int nsec = (x->tv_usec - y->tv_usec) / 1000000;
|
||
|
|
y->tv_usec += 1000000 * nsec;
|
||
|
|
y->tv_sec -= nsec;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Compute the time remaining to wait.
|
||
|
|
tv_usec is certainly positive. */
|
||
|
|
result->tv_sec = x->tv_sec - y->tv_sec;
|
||
|
|
result->tv_usec = x->tv_usec - y->tv_usec;
|
||
|
|
|
||
|
|
/* Return 1 if result is negative. */
|
||
|
|
return x->tv_sec < y->tv_sec;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct rusage getrusage_or_die() {
|
||
|
|
struct rusage rs;
|
||
|
|
int ret = getrusage(RUSAGE_SELF, &rs);
|
||
|
|
if (ret != 0) {
|
||
|
|
cerr << "rusage failed: " << strerror(errno) << endl;
|
||
|
|
exit(-1);
|
||
|
|
}
|
||
|
|
return rs;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef HAVE_CXA_DEMANGLE
|
||
|
|
string demangle(const string& name) {
|
||
|
|
char buf[1024];
|
||
|
|
unsigned int size = 1024;
|
||
|
|
int status;
|
||
|
|
char* res = abi::__cxa_demangle(
|
||
|
|
name.c_str(), buf, &size, &status);
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
string demangle(const string& name) { return name; }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
static vector<cxxmph::Benchmark*> g_benchmarks;
|
||
|
|
|
||
|
|
} // anonymous namespace
|
||
|
|
|
||
|
|
namespace cxxmph {
|
||
|
|
|
||
|
|
/* static */ void Benchmark::Register(Benchmark* bm) {
|
||
|
|
if (bm->name().empty()) {
|
||
|
|
string name = demangle(typeid(*bm).name());
|
||
|
|
bm->set_name(name);
|
||
|
|
}
|
||
|
|
g_benchmarks.push_back(bm);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* static */ void Benchmark::RunAll() {
|
||
|
|
for (auto it = g_benchmarks.begin(); it != g_benchmarks.end(); ++it) {
|
||
|
|
(*it)->MeasureRun();
|
||
|
|
delete *it;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void Benchmark::MeasureRun() {
|
||
|
|
struct rusage begin = getrusage_or_die();
|
||
|
|
Run(iters_);
|
||
|
|
struct rusage end = getrusage_or_die();
|
||
|
|
|
||
|
|
struct timeval utime;
|
||
|
|
timeval_subtract(&utime, &end.ru_utime, &begin.ru_utime);
|
||
|
|
struct timeval stime;
|
||
|
|
timeval_subtract(&stime, &end.ru_stime, &begin.ru_stime);
|
||
|
|
|
||
|
|
printf("Benchmark: %s\n", name().c_str());
|
||
|
|
printf("User time used : %ld.%06ld\n", utime.tv_sec, utime.tv_usec);
|
||
|
|
printf("System time used: %ld.%06ld\n", stime.tv_sec, stime.tv_usec);
|
||
|
|
printf("\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace cxxmph
|