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zydis
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Improved performance-test tool

This commit is contained in:
flobernd 2017-09-14 23:41:25 +02:00
parent 606214c5a7
commit 8540326e33
1 changed files with 48 additions and 1 deletions
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49
examples/ZydisPerfTest.c
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@ -39,6 +39,7 @@
# include <mach/mach_time.h>
#elif defined(ZYDIS_LINUX)
# include <sys/time.h>
# inlcude <pthread.h>
#else
# error "Unsupported platform detected"
#endif
@ -47,6 +48,10 @@
/* Helper functions */
/* ============================================================================================== */
/* ---------------------------------------------------------------------------------------------- */
/* Time measurement */
/* ---------------------------------------------------------------------------------------------- */
#if defined(ZYDIS_WINDOWS)
double CounterFreq = 0.0;
uint64_t CounterStart = 0;
@ -93,6 +98,42 @@ double GetCounter()
// TODO:
#endif
/* ---------------------------------------------------------------------------------------------- */
/* Process & Thread Priority */
/* ---------------------------------------------------------------------------------------------- */
void adjustProcessAndThreadPriority()
{
#ifdef ZYDIS_WINDOWS
SYSTEM_INFO info;
GetSystemInfo(&info);
if (info.dwNumberOfProcessors > 1)
{
if (!SetThreadAffinityMask(GetCurrentThread(), (DWORD_PTR)1))
{
fputs("Warning: Could not set thread affinity mask.", stderr);
}
if (!SetPriorityClass(GetCurrentProcess(), REALTIME_PRIORITY_CLASS))
{
fputs("Warning: Could not set process priority class.", stderr);
}
if (!SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL))
{
fputs("Warning: Could not set thread priority class.", stderr);
}
}
#endif
#ifdef ZYDIS_LINUX
pthread_t thread = pthread_self();
cpu_set_t cpus;
CPU_ZERO(&cpus);
CPU_SET(cpu, &cpus);
pthread_setaffinity_np(thread, sizeof(cpus), &cpus);
#endif
}
/* ---------------------------------------------------------------------------------------------- */
/* ============================================================================================== */
/* Internal functions */
/* ============================================================================================== */
@ -150,6 +191,10 @@ uint64_t processBuffer(const char* buffer, size_t length, ZydisDecodeGranularity
void testPerformance(const char* buffer, size_t length, ZydisDecodeGranularity granularity,
ZydisBool format)
{
// Cache warmup
processBuffer(buffer, length, granularity, format);
// Testing
uint64_t count = 0;
StartCounter();
for (uint8_t j = 0; j < 100; ++j)
@ -286,9 +331,11 @@ int main(int argc, char** argv)
if (generate)
{
time_t t;
srand((unsigned) time(&t));
srand((unsigned)time(&t));
}
adjustProcessAndThreadPriority();
for (uint8_t i = 0; i < ZYDIS_ARRAY_SIZE(tests); ++i)
{
FILE* file;