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Added atomicLoad, atomicStore, atomicExchange, cpuRelax, getStackAddress, getHardwareThreads, timerResolutionBegin/End, memoryAllocationGranularity, and sanitizer.h. Fixed memoryPageSize returning allocation granularity on Windows. (#435)

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This commit is contained in:
Branimir Karadžić
2026-09-30 02:16:07 +00:00
committed by GitHub
parent e98d9f4b35
commit 3b8366af83
12 changed files with 436 additions and 26 deletions
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src/os.cpp
+79 -5
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@@ -77,6 +77,68 @@ namespace bx
#endif // BX_PLATFORM_
}
#if BX_PLATFORM_WINDOWS
typedef uint32_t (__stdcall* TimePeriodFn)(uint32_t _ms);
static void timePeriod(const StringView& _name, uint32_t _ms)
{
if (0 == _ms)
{
return;
}
// Loaded on demand, so that users of bx don't have to link with winmm.
static void* s_winmm = dlopen("winmm.dll");
if (NULL != s_winmm)
{
TimePeriodFn fn = dlsym<TimePeriodFn>(s_winmm, _name);
if (NULL != fn)
{
fn(_ms);
}
}
}
void timerResolutionBegin(uint32_t _ms)
{
timePeriod("timeBeginPeriod", _ms);
}
void timerResolutionEnd(uint32_t _ms)
{
timePeriod("timeEndPeriod", _ms);
}
#else
void timerResolutionBegin(uint32_t _ms)
{
BX_UNUSED(_ms);
}
void timerResolutionEnd(uint32_t _ms)
{
BX_UNUSED(_ms);
}
#endif // BX_PLATFORM_WINDOWS
uint32_t getHardwareThreads()
{
#if BX_CRT_NONE
return 1;
#elif BX_PLATFORM_WINDOWS || BX_PLATFORM_WINRT
SYSTEM_INFO si;
memSet(&si, 0, sizeof(si) );
::GetNativeSystemInfo(&si);
return max<uint32_t>(1, si.dwNumberOfProcessors);
#elif BX_PLATFORM_POSIX && defined(_SC_NPROCESSORS_ONLN)
const long num = ::sysconf(_SC_NPROCESSORS_ONLN);
return uint32_t(max<long>(1, num) );
#else
return 1;
#endif // BX_PLATFORM_
}
uint32_t getTid()
{
#if BX_PLATFORM_WINDOWS
@@ -439,9 +501,9 @@ namespace bx
const uint32_t advise = _flags & Memory::AdviseMask;
const uint32_t page = _flags & Memory::PageMask;
const size_t pageSize = memoryPageSize();
BX_ASSERT(_alignment <= pageSize, "Alignments greater than the page size are not implemented (requested %zu, page %zu).", _alignment, pageSize);
BX_UNUSED(_alignment, pageSize);
const size_t granularity = memoryAllocationGranularity();
BX_ASSERT(_alignment <= granularity, "Alignments greater than the allocation granularity are not implemented (requested %zu, granularity %zu).", _alignment, granularity);
BX_UNUSED(_alignment, granularity);
#if BX_PLATFORM_LINUX || BX_PLATFORM_OSX
if (NULL == _address)
@@ -608,7 +670,7 @@ namespace bx
BX_UNUSED(advise);
return _address;
#else
BX_UNUSED(_address, _size, _alignment, _flags, state, protect, advise, page, pageSize);
BX_UNUSED(_address, _size, _alignment, _flags, state, protect, advise, page, granularity);
BX_ERROR_SET(_err, kErrorMemoryMapFailed, "memoryMap: Not implemented!");
return NULL;
#endif // BX_PLATFORM_*
@@ -667,11 +729,23 @@ namespace bx
SYSTEM_INFO si;
memSet(&si, 0, sizeof(si) );
::GetSystemInfo(&si);
return si.dwAllocationGranularity;
return si.dwPageSize;
#else
BX_UNUSED(page);
return 16<<10;
#endif // BX_PLATFORM_WINDOWS
}
size_t memoryAllocationGranularity()
{
#if BX_PLATFORM_WINDOWS
SYSTEM_INFO si;
memSet(&si, 0, sizeof(si) );
::GetSystemInfo(&si);
return si.dwAllocationGranularity;
#else
return memoryPageSize();
#endif // BX_PLATFORM_WINDOWS
}
} // namespace bx