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Use rdtscp when there's no intrinsic.

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This commit is contained in:
Bartosz Taudul 2017-10-03 15:27:07 +02:00
parent 9cde85646a
commit 7b1135239c
1 changed files with 6 additions and 0 deletions
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6
client/TracyProfiler.hpp
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@ -46,6 +46,12 @@ public:
const auto t = int64_t( __rdtscp( &ui ) );
cpu = (int8_t)ui;
return t;
#elif defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64
uint64_t eax, edx;
unsigned int ui;
asm volatile ( "rdtscp" : "=a" (eax), "=d" (edx), "=c" (ui) :: );
cpu = (int8_t)ui;
return ( edx << 32 ) + eax;
#else
cpu = -1;
return std::chrono::duration_cast<std::chrono::nanoseconds>( std::chrono::high_resolution_clock::now().time_since_epoch() ).count();