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Full 64-bit register is set by rdtsc.

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This commit is contained in:
Bartosz Taudul 2019-10-21 01:13:55 +02:00
parent 699ff43f1e
commit cf88265304
1 changed files with 5 additions and 1 deletions
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6
client/TracyProfiler.hpp
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@ -110,10 +110,14 @@ public:
# endif
# elif defined _WIN32 || defined __CYGWIN__
return int64_t( __rdtsc() );
# elif defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64
# elif defined __i386 || defined _M_IX86
uint32_t eax, edx;
asm volatile ( "rdtsc" : "=a" (eax), "=d" (edx) );
return ( uint64_t( edx ) << 32 ) + uint64_t( eax );
# elif defined __x86_64__ || defined _M_X64
uint64_t rax, rdx;
asm volatile ( "rdtsc" : "=a" (rax), "=d" (rdx) );
return ( rdx << 32 ) + rax;
# endif
#else
return std::chrono::duration_cast<std::chrono::nanoseconds>( std::chrono::high_resolution_clock::now().time_since_epoch() ).count();