#include "precompiled.h"
#include "lib/sysdep/os/win/wcpu.h"
#include "lib/sysdep/os_cpu.h"
#include "lib/bits.h"
#include "lib/alignment.h"
#include "lib/module_init.h"
#include "lib/sysdep/os/win/wutil.h"
#include "lib/sysdep/arch/x86_x64/x86_x64.h"

Include dependency graph for wcpu.cpp:

Functions
uintptr_t	os_cpu_ProcessorMask ()

size_t	os_cpu_NumProcessors ()

Status	wcpu_ReadFrequencyFromRegistry (u32 &freqMhz)

size_t	os_cpu_PageSize ()

size_t	os_cpu_LargePageSize ()

static void	GetMemoryStatus (MEMORYSTATUSEX &mse)

size_t	os_cpu_QueryMemorySize ()

size_t	os_cpu_MemoryAvailable ()

DWORD_PTR	wcpu_AffinityFromProcessorMask (DWORD_PTR processAffinity, uintptr_t processorMask)

uintptr_t	wcpu_ProcessorMaskFromAffinity (DWORD_PTR processAffinity, DWORD_PTR affinity)

static void	VerifyRunningOnCorrectProcessors (DWORD_PTR affinity)

uintptr_t	os_cpu_SetThreadAffinityMask (uintptr_t processorMask)
	restrict the current thread to a set of processors. More...

Status	os_cpu_CallByEachCPU (OsCpuCallback cb, uintptr_t cbData)
	execute the specified function once on each processor. More...

Function Documentation

◆ GetMemoryStatus()

static void GetMemoryStatus ( MEMORYSTATUSEX & mse )

static

◆ os_cpu_CallByEachCPU()

Status os_cpu_CallByEachCPU	(	OsCpuCallback	cb,
		uintptr_t	cbData
	)

execute the specified function once on each processor.

this proceeds serially (the callback is never reentered) in increasing order of processor ID. fails if process affinity prevents running on all processors.

◆ os_cpu_LargePageSize()

size_t os_cpu_LargePageSize ( )

Returns: the size [bytes] of a large MMU page (4 MiB on most IA-32 systems) or zero if they are not supported.

◆ os_cpu_MemoryAvailable()

size_t os_cpu_MemoryAvailable ( )

Returns: the current amount [MB] of available memory.

◆ os_cpu_NumProcessors()

size_t os_cpu_NumProcessors ( )

Returns: the number of processors available to this process.

note: this function is necessary because POSIX sysconf _SC_NPROCESSORS_CONF is not suppored on MacOSX, else we would use that.

◆ os_cpu_PageSize()

size_t os_cpu_PageSize ( )

Returns: the size [bytes] of a MMU page (4096 on most IA-32 systems)

◆ os_cpu_ProcessorMask()

uintptr_t os_cpu_ProcessorMask ( )

Returns: bit mask of processors that exist and are available to this process. its population count is by definition equal to os_cpu_NumProcessors().

◆ os_cpu_QueryMemorySize()

size_t os_cpu_QueryMemorySize ( )

Returns: the size [MB] of physical memory as reported by the OS; no caching/validation is performed.

◆ os_cpu_SetThreadAffinityMask()

uintptr_t os_cpu_SetThreadAffinityMask ( uintptr_t processorMask )

restrict the current thread to a set of processors.

Parameters

processorMask a bit mask of acceptable processors (bit index i corresponds to processor i)

Returns: the previous mask

◆ VerifyRunningOnCorrectProcessors()

static void VerifyRunningOnCorrectProcessors ( DWORD_PTR affinity )