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Make sure profiler is initialized only once in delayed init scenario.

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This commit is contained in:
Bartosz Taudul 2019-06-19 17:28:18 +02:00
parent 9702461b09
commit c98f1f0b6b
1 changed files with 15 additions and 6 deletions
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21
client/TracyProfiler.cpp
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@ -913,17 +913,26 @@ struct ProfilerThreadData
# endif # endif
}; };
static ProfilerData* profilerData; static std::atomic<int> profilerDataLock { 0 };
static std::atomic<ProfilerData*> profilerData { nullptr };
static ProfilerData& GetProfilerData() static ProfilerData& GetProfilerData()
{ {
// Cannot use magic statics here. auto ptr = profilerData.load( std::memory_order_acquire );
if( !profilerData ) if( !ptr )
{ {
profilerData = (ProfilerData*)malloc( sizeof( ProfilerData ) ); int expected = 0;
new (profilerData) ProfilerData(); while( !profilerDataLock.compare_exchange_strong( expected, 1, std::memory_order_release, std::memory_order_relaxed ) ) { expected = 0; }
ptr = profilerData.load( std::memory_order_acquire );
if( !ptr )
{
ptr = (ProfilerData*)malloc( sizeof( ProfilerData ) );
new (ptr) ProfilerData();
profilerData.store( ptr, std::memory_order_release );
}
profilerDataLock.store( 0, std::memory_order_release );
} }
return *profilerData; return *ptr;
} }
static ProfilerThreadData& GetProfilerThreadData() static ProfilerThreadData& GetProfilerThreadData()