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Add support for QPC timer.

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This commit is contained in:
Bartosz Taudul 2020-04-07 22:01:31 +02:00
parent 34b512d04b
commit b69aaf04e9
3 changed files with 24 additions and 1 deletions
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13
client/TracyProfiler.cpp
View File

@ -220,6 +220,7 @@ static void InitFailure( const char* msg )
static int64_t SetupHwTimer()
{
#ifndef TRACY_TIMER_QPC
uint32_t regs[4];
CpuId( regs, 0x80000001 );
if( !( regs[3] & ( 1 << 27 ) ) ) InitFailure( "CPU doesn't support RDTSCP instruction." );
@ -229,9 +230,10 @@ static int64_t SetupHwTimer()
const char* noCheck = getenv( "TRACY_NO_INVARIANT_CHECK" );
if( !noCheck || noCheck[0] != '1' )
{
InitFailure( "CPU doesn't support invariant TSC.\nDefine TRACY_NO_INVARIANT_CHECK=1 to ignore this error, *if you know what you are doing*." );
InitFailure( "CPU doesn't support invariant TSC.\nDefine TRACY_NO_INVARIANT_CHECK=1 to ignore this error, *if you know what you are doing*.\nAlternatively you may rebuild the application with the TRACY_TIMER_QPC define to use lower resolution timer." );
}
}
#endif
return Profiler::GetTime();
}
@ -2786,6 +2788,15 @@ void Profiler::SendCodeLocation( uint64_t ptr )
#endif
}
#if ( defined _WIN32 || defined __CYGWIN__ ) && defined TRACY_TIMER_QPC
int64_t Profiler::GetTimeQpc()
{
LARGE_INTEGER t;
QueryPerformanceCounter( &t );
return t.QuadPart;
}
#endif
}
#ifdef __cplusplus

8
client/TracyProfiler.hpp
View File

@ -131,7 +131,11 @@ public:
return std::chrono::duration_cast<std::chrono::nanoseconds>( std::chrono::high_resolution_clock::now().time_since_epoch() ).count();
# endif
# elif defined _WIN32 || defined __CYGWIN__
# ifdef TRACY_TIMER_QPC
return GetTimeQpc();
# else
return int64_t( __rdtsc() );
# endif
# elif defined __i386 || defined _M_IX86
uint32_t eax, edx;
asm volatile ( "rdtsc" : "=a" (eax), "=d" (edx) );
@ -609,6 +613,10 @@ private:
GetProfiler().m_serialQueue.commit_next();
}
#if ( defined _WIN32 || defined __CYGWIN__ ) && defined TRACY_TIMER_QPC
static int64_t GetTimeQpc();
#endif
double m_timerMul;
uint64_t m_resolution;
uint64_t m_delay;

4
client/TracySysTrace.cpp
View File

@ -226,7 +226,11 @@ bool SysTraceStart( int64_t& samplingPeriod )
s_prop->LogFileMode = EVENT_TRACE_REAL_TIME_MODE;
s_prop->Wnode.BufferSize = psz;
s_prop->Wnode.Flags = WNODE_FLAG_TRACED_GUID;
#ifdef TRACY_TIMER_QPC
s_prop->Wnode.ClientContext = 1;
#else
s_prop->Wnode.ClientContext = 3;
#endif
s_prop->Wnode.Guid = SystemTraceControlGuid;
s_prop->BufferSize = 1024;
s_prop->LoggerNameOffset = sizeof( EVENT_TRACE_PROPERTIES );