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support non-x86 arches missing RDTSC

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Extends support of non-intel architectures which do not have an RDTSC
timer.

Applies debian patch support-non-x86.patch
d7ca1c564d/debian/patches/support-non-x86.patch
This commit is contained in:
Drew Parsons 2025-01-05 13:28:59 +01:00
parent 84fc680e72
commit bc489e2f0d
1 changed files with 6 additions and 2 deletions
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8
libsrc/core/utils.hpp
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@ -19,7 +19,9 @@
#ifdef NETGEN_ARCH_AMD64
#ifdef WIN32
#include <intrin.h> // for __rdtsc() CPU time step counter
#else
#define NGCORE_HAVE_RDTSC
#elif defined __SSE__
#define NGCORE_HAVE_RDTSC
#include <x86intrin.h> // for __rdtsc() CPU time step counter
#endif // WIN32
#endif // NETGEN_ARCH_AMD64
@ -65,7 +67,7 @@ namespace ngcore
{
#if defined(__APPLE__) && defined(NETGEN_ARCH_ARM64)
return mach_absolute_time();
#elif defined(NETGEN_ARCH_AMD64)
#elif defined(NETGEN_ARCH_AMD64) || defined(NGCORE_HAVE_RDTSC)
return __rdtsc();
#elif defined(NETGEN_ARCH_ARM64) && defined(__GNUC__)
// __GNUC__ is also defined by CLANG. Use inline asm to read Generic Timer
@ -74,6 +76,8 @@ namespace ngcore
return tics;
#elif defined(__EMSCRIPTEN__)
return std::chrono::high_resolution_clock::now().time_since_epoch().count();
#elifndef NGCORE_HAVE_RDTSC
return TTimePoint(std::chrono::steady_clock::now().time_since_epoch().count());
#else
#warning "Unsupported CPU architecture"
return 0;