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// Windows/System.cpp↩
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#include "StdAfx.h"↩
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#include "../Common/MyWindows.h"↩
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#include "../Common/Defs.h"↩
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#include "System.h"↩
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namespace NWindows {↩
namespace NSystem {↩
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UInt32 CountAffinity(DWORD_PTR mask)↩
{↩
UInt32 num = 0;↩
for (unsigned i = 0; i < sizeof(mask) * 8; i++)↩
num += (UInt32)((mask >> i) & 1);↩
return num;↩
}↩
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#ifdef _WIN32↩
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BOOL CProcessAffinity::Get()↩
{↩
#ifndef UNDER_CE↩
return GetProcessAffinityMask(GetCurrentProcess(), &processAffinityMask, &systemAffinityMask);↩
#else↩
return FALSE;↩
#endif↩
}↩
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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↩
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CProcessAffinity pa;↩
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if (pa.Get() && pa.processAffinityMask != 0)↩
return pa.GetNumProcessThreads();↩
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SYSTEM_INFO systemInfo;↩
GetSystemInfo(&systemInfo);↩
// the number of logical processors in the current group↩
return (UInt32)systemInfo.dwNumberOfProcessors;↩
}↩
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#else↩
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UInt32 GetNumberOfProcessors()↩
{↩
return 1;↩
}↩
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#endif↩
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#ifdef _WIN32↩
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#ifndef UNDER_CE↩
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#if !defined(_WIN64) && defined(__GNUC__)↩
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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;↩
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#else↩
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#define MY_MEMORYSTATUSEX MEMORYSTATUSEX↩
#define MY_LPMEMORYSTATUSEX LPMEMORYSTATUSEX↩
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#endif↩
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typedef BOOL (WINAPI *GlobalMemoryStatusExP)(MY_LPMEMORYSTATUSEX lpBuffer);↩
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#endif↩
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#endif↩
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bool GetRamSize(UInt64 &size)↩
{↩
size = (UInt64)(sizeof(size_t)) << 29;↩
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#ifdef _WIN32↩
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#ifndef UNDER_CE↩
MY_MEMORYSTATUSEX stat;↩
stat.dwLength = sizeof(stat);↩
#endif↩
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#ifdef _WIN64↩
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if (!::GlobalMemoryStatusEx(&stat))↩
return false;↩
size = MyMin(stat.ullTotalVirtual, stat.ullTotalPhys);↩
return true;↩
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#else↩
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#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↩
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{↩
MEMORYSTATUS stat2;↩
stat2.dwLength = sizeof(stat2);↩
::GlobalMemoryStatus(&stat2);↩
size = MyMin(stat2.dwTotalVirtual, stat2.dwTotalPhys);↩
return true;↩
}↩
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#endif↩
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#else↩
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return false;↩
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#endif↩
}↩
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}}↩