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// Windows/System.cpp
#include "StdAfx.h"
#include "../Common/MyWindows.h"
#include "../Common/Defs.h"
#include "System.h"
namespace NWindows {
namespace NSystem {
UInt32 CountAffinity(DWORD_PTR mask)
{
UInt32 num = 0;
for (unsigned i = 0; i < sizeof(mask) * 8; i++)
num += (UInt32)((mask >> i) & 1);
return num;
}
#ifdef _WIN32
BOOL CProcessAffinity::Get()
{
#ifndef UNDER_CE
return GetProcessAffinityMask(GetCurrentProcess(), &processAffinityMask, &systemAffinityMask);
#else
return FALSE;
#endif
}
UInt32 GetNumberOfProcessors()
{
// We need to know how many threads we can use.
// By default the process is assigned to one group.
// So we get the number of logical processors (threads)
// assigned to current process in the current group.
// Group size can be smaller than total number logical processors, for exammple, 2x36
CProcessAffinity pa;
if (pa.Get() && pa.processAffinityMask != 0)
return pa.GetNumProcessThreads();
SYSTEM_INFO systemInfo;
GetSystemInfo(&systemInfo);
// the number of logical processors in the current group
return (UInt32)systemInfo.dwNumberOfProcessors;
}
#else
UInt32 GetNumberOfProcessors()
{
return 1;
}
#endif
#ifdef _WIN32
#ifndef UNDER_CE
#if !defined(_WIN64) && defined(__GNUC__)
typedef struct _MY_MEMORYSTATUSEX {
DWORD dwLength;
DWORD dwMemoryLoad;
DWORDLONG ullTotalPhys;
DWORDLONG ullAvailPhys;
DWORDLONG ullTotalPageFile;
DWORDLONG ullAvailPageFile;
DWORDLONG ullTotalVirtual;
DWORDLONG ullAvailVirtual;
DWORDLONG ullAvailExtendedVirtual;
} MY_MEMORYSTATUSEX, *MY_LPMEMORYSTATUSEX;
#else
#define MY_MEMORYSTATUSEX MEMORYSTATUSEX
#define MY_LPMEMORYSTATUSEX LPMEMORYSTATUSEX
#endif
typedef BOOL (WINAPI *GlobalMemoryStatusExP)(MY_LPMEMORYSTATUSEX lpBuffer);
#endif
#endif
bool GetRamSize(UInt64 &size)
{
size = (UInt64)(sizeof(size_t)) << 29;
#ifdef _WIN32
#ifndef UNDER_CE
MY_MEMORYSTATUSEX stat;
stat.dwLength = sizeof(stat);
#endif
#ifdef _WIN64
if (!::GlobalMemoryStatusEx(&stat))
return false;
size = MyMin(stat.ullTotalVirtual, stat.ullTotalPhys);
return true;
#else
#ifndef UNDER_CE
GlobalMemoryStatusExP globalMemoryStatusEx = (GlobalMemoryStatusExP)
::GetProcAddress(::GetModuleHandle(TEXT("kernel32.dll")), "GlobalMemoryStatusEx");
if (globalMemoryStatusEx && globalMemoryStatusEx(&stat))
{
size = MyMin(stat.ullTotalVirtual, stat.ullTotalPhys);
return true;
}
#endif
{
MEMORYSTATUS stat2;
stat2.dwLength = sizeof(stat2);
::GlobalMemoryStatus(&stat2);
size = MyMin(stat2.dwTotalVirtual, stat2.dwTotalPhys);
return true;
}
#endif
#else
return false;
#endif
}
}}
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