diff options
Diffstat (limited to 'Source/Timing/timestamp.h')
| -rw-r--r-- | Source/Timing/timestamp.h | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/Source/Timing/timestamp.h b/Source/Timing/timestamp.h index 12576f6c..f579b389 100644 --- a/Source/Timing/timestamp.h +++ b/Source/Timing/timestamp.h @@ -27,17 +27,21 @@ #include <Compat/platform.h> inline uint64_t GetTimestamp() { - // Use rdtsc instruction to get the tsc or Time Stamp Counter + // Use rdtsc instruction to get the tsc or Time Stamp Counter #if (defined(PLATFORM_LINUX) || defined(PLATFORM_MACOSX)) && (defined(__i386__) || defined(__x86_64__)) - uint32_t rax, rdx; - asm volatile ( "lfence" ::: "memory" ); //Fence memory load to everything is executed up to this point. - asm volatile ( "rdtsc\n" : "=a" (rax), "=d" (rdx) : : ); - return ((uint64_t)rdx << 32) + rax; -#elif defined(PLATFORM_WINDOWS) && _MSC_VER >= 1600 - unsigned __int64 i; - _ReadBarrier(); - i = __rdtsc(); - return (uint64_t)i; + uint32_t rax, rdx; + asm volatile("lfence" :: + : "memory"); // Fence memory load to everything is executed up to this point. + asm volatile("rdtsc\n" + : "=a"(rax), "=d"(rdx) + : + :); + return ((uint64_t)rdx << 32) + rax; +#elif defined(PLATFORM_WINDOWS) && _MSC_VER >= 1600 + unsigned __int64 i; + _ReadBarrier(); + i = __rdtsc(); + return (uint64_t)i; #else #error "No timer implementation for current target platform" |