Scarfski/tracy
1
0
Fork 0
mirror of https://github.com/wolfpld/tracy.git synced 2026-09-01 07:58:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

switch to using ARM64's CNTVCT_EL0 instruction instead of std::chrono::high_resolution_clock on macOS

Browse Source
This commit is contained in:
Marcos Slomp
2025-12-22 11:43:51 -08:00
parent 6cd7751479
commit f55bd056a9
1 changed files with 14 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
public/client/TracyProfiler.hpp
View File

@@ -28,7 +28,7 @@
# include <mach/mach_time.h>
#endif
#if ( (defined _WIN32 && !(defined _M_ARM64 || defined _M_ARM)) || ( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 ) || ( defined TARGET_OS_IOS && TARGET_OS_IOS == 1 ) )
#if ( (defined _WIN32 && !(defined _M_ARM64 || defined _M_ARM)) || ( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 ) || ( defined TARGET_OS_IOS && TARGET_OS_IOS == 1 ) || ( defined __APPLE__ && defined __MACH__ && TARGET_CPU_ARM64 ) )
# define TRACY_HW_TIMER
#endif
@@ -200,6 +200,19 @@ public:
#ifdef TRACY_HW_TIMER
# if defined TARGET_OS_IOS && TARGET_OS_IOS == 1
if( HardwareSupportsInvariantTSC() ) return mach_absolute_time();
# elif defined(__APPLE__) && defined(__MACH__) && TARGET_CPU_ARM64
if( HardwareSupportsInvariantTSC() )
{
uint64_t value;
__asm__ __volatile__(
//"isb \n" // ommitting "Instruction Synchronization Barrier"
"mrs %0, CNTVCT_EL0"
: "=r" (value) // Output: write 'register %0' to 'value'
: // No inputs
: "memory" // Clobber list: memory (e.g., compiler barrier)
);
return value;
}
# elif defined _WIN32
# ifdef TRACY_TIMER_QPC
return GetTimeQpc();