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// Copyright Epic Games, Inc. All Rights Reserved.
#include <zencore/thread.h>
#include <zencore/timer.h>
#include <zencore/testing.h>
#if ZEN_PLATFORM_WINDOWS
# include <zencore/windows.h>
#elif ZEN_PLATFORM_LINUX
# include <time.h>
# include <unistd.h>
#endif
namespace zen {
uint64_t
GetHifreqTimerValue()
{
uint64_t Timestamp;
#if ZEN_PLATFORM_WINDOWS
LARGE_INTEGER li;
QueryPerformanceCounter(&li);
Timestamp = li.QuadPart;
#else
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
Timestamp = (uint64_t(ts.tv_sec) * 1000000ull) + (uint64_t(ts.tv_nsec) / 1000ull);
#endif
return Timestamp;
}
uint64_t
InternalGetHifreqTimerFrequency()
{
#if ZEN_PLATFORM_WINDOWS
LARGE_INTEGER li;
QueryPerformanceFrequency(&li);
return li.QuadPart;
#else
return 1000000ull;
#endif
}
uint64_t QpcFreq = InternalGetHifreqTimerFrequency();
static const double QpcFactor = 1.0 / InternalGetHifreqTimerFrequency();
uint64_t
GetHifreqTimerFrequency()
{
return QpcFreq;
}
double
GetHifreqTimerToSeconds()
{
return QpcFactor;
}
uint64_t
GetHifreqTimerFrequencySafe()
{
if (!QpcFreq)
{
QpcFreq = InternalGetHifreqTimerFrequency();
}
return QpcFreq;
}
//////////////////////////////////////////////////////////////////////////
uint64_t detail::g_LofreqTimerValue = GetHifreqTimerValue();
void
UpdateLofreqTimerValue()
{
detail::g_LofreqTimerValue = GetHifreqTimerValue();
}
uint64_t
GetLofreqTimerFrequency()
{
return GetHifreqTimerFrequencySafe();
}
//////////////////////////////////////////////////////////////////////////
//
// Testing related code follows...
//
#if ZEN_WITH_TESTS
void
timer_forcelink()
{
}
#endif
} // namespace zen
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