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Initial commits of the sharedDebug and sharedMemoryManager projects

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Anonymous
2014-01-13 09:07:22 -07:00
parent 5940c017b7
commit b632e73284
91 changed files with 12704 additions and 0 deletions
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engine/shared/library/sharedDebug/src/win32/ProfilerTimer.cpp
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// ======================================================================
//
// ProfilerTimer.cpp
// copyright (c) 2001 Sony Online Entertainment
//
// ======================================================================
#include "shareddebug/FirstSharedDebug.h"
#include "shareddebug/ProfilerTimer.h"
#include "shareddebug/DebugFlags.h"
#include "sharedFoundation/WindowsWrapper.h"
// ======================================================================
namespace ProfilerTimerNamespace
{
ProfilerTimer::Type ms_qpcFrequency;
float ms_floatQpcFrequency;
__int64 ms_rdtsc;
__int64 ms_qpc;
bool ms_useRdtsc;
}
using namespace ProfilerTimerNamespace;
// ======================================================================
static __int64 __declspec(naked) __stdcall readTimeStampCounter()
{
__asm
{
rdtsc;
ret;
}
}
// ======================================================================
void ProfilerTimer::install()
{
IGNORE_RETURN(QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER *>(&ms_qpc)));
ms_rdtsc = readTimeStampCounter();
IGNORE_RETURN(QueryPerformanceFrequency(reinterpret_cast<LARGE_INTEGER *>(&ms_qpcFrequency)));
ms_floatQpcFrequency = static_cast<float>(ms_qpcFrequency);
DebugFlags::registerFlag(ms_useRdtsc, "SharedDebug/Profiler", "useRdtsc");
}
// ----------------------------------------------------------------------
void ProfilerTimer::getTime(Type &time)
{
if (ms_useRdtsc)
time = readTimeStampCounter();
else
IGNORE_RETURN(QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER *>(&time)));
}
// ----------------------------------------------------------------------
void ProfilerTimer::getCalibratedTime(Type &time, Type &frequency)
{
if (ms_useRdtsc)
{
__int64 qpc;
IGNORE_RETURN(QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER *>(&qpc)));
__int64 rdtsc = readTimeStampCounter();
float const t = static_cast<float>(qpc - ms_qpc) / ms_floatQpcFrequency;
frequency = static_cast<__int64>(static_cast<float>(rdtsc - ms_rdtsc) / t);
time = rdtsc;
ms_qpc = qpc;
ms_rdtsc = time;
}
else
{
IGNORE_RETURN(QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER *>(&time)));
frequency = ms_qpcFrequency;
}
}
void ProfilerTimer::getFrequency(Type &frequency)
{
frequency = ms_qpcFrequency;
}
// ======================================================================