Link/tracy
1
0
Fork 0
mirror of https://github.com/wolfpld/tracy.git synced 2025-03-20 07:40:02 +08:00
Code Issues Projects Wiki Activity

Allow disabling cycle/retirement sampling.

Browse Source
This commit is contained in:
Bartosz Taudul 2021-05-19 23:38:32 +02:00
parent 3a0e12043d
commit 741de5c8fb
No known key found for this signature in database
GPG Key ID: B7FE2008B7575DF3
1 changed files with 24 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
client/TracySysTrace.cpp
View File

@ -1,4 +1,5 @@
#include "TracySysTrace.hpp" #include "TracySysTrace.hpp"
#include "../common/TracySystem.hpp"
#ifdef TRACY_HAS_SYSTEM_TRACING #ifdef TRACY_HAS_SYSTEM_TRACING
@ -689,6 +690,13 @@ static void SetupSampling( int64_t& samplingPeriod )
return; return;
#endif #endif
#ifdef TRACY_NO_SAMPLE_RETIREMENT
const bool noRetirement = true;
#else
const char* noRetirementEnv = GetEnvVar( "TRACY_NO_SAMPLE_RETIREMENT" );
const bool noRetirement = noRetirementEnv && noRetirementEnv[0] == '1';
#endif
samplingPeriod = GetSamplingPeriod(); samplingPeriod = GetSamplingPeriod();
s_numCpus = (int)std::thread::hardware_concurrency(); s_numCpus = (int)std::thread::hardware_concurrency();
@ -738,26 +746,32 @@ static void SetupSampling( int64_t& samplingPeriod )
pe.exclude_idle = 1; pe.exclude_idle = 1;
pe.precise_ip = 2; pe.precise_ip = 2;
for( int i=0; i<s_numCpus; i++ ) if( !noRetirement )
{ {
const int fd = perf_event_open( &pe, -1, i, -1, PERF_FLAG_FD_CLOEXEC ); for( int i=0; i<s_numCpus; i++ )
if( fd != -1 )
{ {
new( s_ring+s_numBuffers ) RingBuffer<RingBufSize>( fd, EventCpuCycles ); const int fd = perf_event_open( &pe, -1, i, -1, PERF_FLAG_FD_CLOEXEC );
s_numBuffers++; if( fd != -1 )
{
new( s_ring+s_numBuffers ) RingBuffer<RingBufSize>( fd, EventCpuCycles );
s_numBuffers++;
}
} }
} }
// Instructions retired // Instructions retired
pe.config = PERF_COUNT_HW_INSTRUCTIONS; pe.config = PERF_COUNT_HW_INSTRUCTIONS;
for( int i=0; i<s_numCpus; i++ ) if( !noRetirement )
{ {
const int fd = perf_event_open( &pe, -1, i, -1, PERF_FLAG_FD_CLOEXEC ); for( int i=0; i<s_numCpus; i++ )
if( fd != -1 )
{ {
new( s_ring+s_numBuffers ) RingBuffer<RingBufSize>( fd, EventInstructionsRetired ); const int fd = perf_event_open( &pe, -1, i, -1, PERF_FLAG_FD_CLOEXEC );
s_numBuffers++; if( fd != -1 )
{
new( s_ring+s_numBuffers ) RingBuffer<RingBufSize>( fd, EventInstructionsRetired );
s_numBuffers++;
}
} }
} }