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Add no-cpu GetTime() variant.

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In this version the address of cpu output variable is const, so there's
no stack address calculation involved.
This commit is contained in:
Bartosz Taudul
2017-10-29 16:12:16 +01:00
parent 68f5a17bca
commit a220043114
3 changed files with 41 additions and 29 deletions
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client/TracyProfiler.cpp
+7 -10
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@@ -73,7 +73,6 @@ enum { QueuePrealloc = 256 * 1024 };
static Profiler* s_instance = nullptr;
static Thread* s_thread = nullptr;
static unsigned int __dontcare_cpu;
// 1a. But s_queue is needed for initialization of variables in point 2.
extern moodycamel::ConcurrentQueue<QueueItem> s_queue;
@@ -90,7 +89,7 @@ thread_local ProducerWrapper init_order(108) s_token { s_queue.get_explicit_prod
# pragma init_seg( ".CRT$XCB" )
#endif
static InitTimeWrapper init_order(101) s_initTime { Profiler::GetTime( __dontcare_cpu ) };
static InitTimeWrapper init_order(101) s_initTime { Profiler::GetTime() };
static RPMallocInit init_order(102) s_rpmalloc_init;
moodycamel::ConcurrentQueue<QueueItem> init_order(103) s_queue( QueuePrealloc );
std::atomic<uint32_t> init_order(104) s_lockCounter( 0 );
@@ -123,8 +122,7 @@ Profiler::Profiler()
new(s_thread) Thread( LaunchWorker, this );
SetThreadName( s_thread->Handle(), "Tracy Profiler" );
uint32_t cpu;
m_timeBegin.store( GetTime( cpu ), std::memory_order_relaxed );
m_timeBegin.store( GetTime(), std::memory_order_relaxed );
}
Profiler::~Profiler()
@@ -406,7 +404,6 @@ void Profiler::CalibrateDelay()
enum { Events = Iterations * 2 }; // start + end
static_assert( Events * 2 < QueuePrealloc, "Delay calibration loop will allocate memory in queue" );
uint32_t cpu;
moodycamel::ProducerToken ptoken_detail( s_queue );
moodycamel::ConcurrentQueue<QueueItem>::ExplicitProducer* ptoken = s_queue.get_explicit_producer( ptoken_detail );
for( int i=0; i<Iterations; i++ )
@@ -432,13 +429,13 @@ void Profiler::CalibrateDelay()
tail.store( magic + 1, std::memory_order_release );
}
}
const auto f0 = GetTime( cpu );
const auto f0 = GetTime();
for( int i=0; i<Iterations; i++ )
{
static const tracy::SourceLocation __tracy_source_location { __FUNCTION__, __FILE__, (uint32_t)__LINE__, 0 };
FakeZone ___tracy_scoped_zone( &__tracy_source_location );
}
const auto t0 = GetTime( cpu );
const auto t0 = GetTime();
for( int i=0; i<Iterations; i++ )
{
static const tracy::SourceLocation __tracy_source_location { __FUNCTION__, __FILE__, (uint32_t)__LINE__, 0 };
@@ -462,7 +459,7 @@ void Profiler::CalibrateDelay()
tail.store( magic + 1, std::memory_order_release );
}
}
const auto t1 = GetTime( cpu );
const auto t1 = GetTime();
const auto dt = t1 - t0;
const auto df = t0 - f0;
m_delay = ( dt - df ) / Events;
@@ -470,8 +467,8 @@ void Profiler::CalibrateDelay()
auto mindiff = std::numeric_limits<int64_t>::max();
for( int i=0; i<Iterations * 10; i++ )
{
const auto t0 = GetTime( cpu );
const auto t1 = GetTime( cpu );
const auto t0 = GetTime();
const auto t1 = GetTime();
const auto dt = t1 - t0;
if( dt > 0 && dt < mindiff ) mindiff = dt;
}