tor-browser

The Tor Browser
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System.cpp (2922B)

      1 // Windows/System.cpp
      2 
      3 #include "StdAfx.h"
      4 
      5 #include "../Common/MyWindows.h"
      6 
      7 #include "../Common/Defs.h"
      8 
      9 #include "System.h"
     10 
     11 namespace NWindows {
     12 namespace NSystem {
     13 
     14 UInt32 CountAffinity(DWORD_PTR mask)
     15 {
     16  UInt32 num = 0;
     17  for (unsigned i = 0; i < sizeof(mask) * 8; i++)
     18    num += (UInt32)((mask >> i) & 1);
     19  return num;
     20 }
     21 
     22 #ifdef _WIN32
     23 
     24 BOOL CProcessAffinity::Get()
     25 {
     26  #ifndef UNDER_CE
     27  return GetProcessAffinityMask(GetCurrentProcess(), &processAffinityMask, &systemAffinityMask);
     28  #else
     29  return FALSE;
     30  #endif
     31 }
     32 
     33 
     34 UInt32 GetNumberOfProcessors()
     35 {
     36  // We need to know how many threads we can use.
     37  // By default the process is assigned to one group.
     38  // So we get the number of logical processors (threads)
     39  // assigned to current process in the current group.
     40  // Group size can be smaller than total number logical processors, for exammple, 2x36
     41 
     42  CProcessAffinity pa;
     43 
     44  if (pa.Get() && pa.processAffinityMask != 0)
     45    return pa.GetNumProcessThreads();
     46 
     47  SYSTEM_INFO systemInfo;
     48  GetSystemInfo(&systemInfo);
     49  // the number of logical processors in the current group
     50  return (UInt32)systemInfo.dwNumberOfProcessors;
     51 }
     52 
     53 #else
     54 
     55 UInt32 GetNumberOfProcessors()
     56 {
     57  return 1;
     58 }
     59 
     60 #endif
     61 
     62 
     63 #ifdef _WIN32
     64 
     65 #ifndef UNDER_CE
     66 
     67 #if !defined(_WIN64) && defined(__GNUC__)
     68 
     69 typedef struct _MY_MEMORYSTATUSEX {
     70  DWORD dwLength;
     71  DWORD dwMemoryLoad;
     72  DWORDLONG ullTotalPhys;
     73  DWORDLONG ullAvailPhys;
     74  DWORDLONG ullTotalPageFile;
     75  DWORDLONG ullAvailPageFile;
     76  DWORDLONG ullTotalVirtual;
     77  DWORDLONG ullAvailVirtual;
     78  DWORDLONG ullAvailExtendedVirtual;
     79 } MY_MEMORYSTATUSEX, *MY_LPMEMORYSTATUSEX;
     80 
     81 #else
     82 
     83 #define MY_MEMORYSTATUSEX MEMORYSTATUSEX
     84 #define MY_LPMEMORYSTATUSEX LPMEMORYSTATUSEX
     85 
     86 #endif
     87 
     88 typedef BOOL (WINAPI *GlobalMemoryStatusExP)(MY_LPMEMORYSTATUSEX lpBuffer);
     89 
     90 #endif
     91 
     92 #endif
     93 
     94 
     95 bool GetRamSize(UInt64 &size)
     96 {
     97  size = (UInt64)(sizeof(size_t)) << 29;
     98 
     99  #ifdef _WIN32
    100  
    101  #ifndef UNDER_CE
    102    MY_MEMORYSTATUSEX stat;
    103    stat.dwLength = sizeof(stat);
    104  #endif
    105  
    106  #ifdef _WIN64
    107    
    108    if (!::GlobalMemoryStatusEx(&stat))
    109      return false;
    110    size = MyMin(stat.ullTotalVirtual, stat.ullTotalPhys);
    111    return true;
    112 
    113  #else
    114    
    115    #ifndef UNDER_CE
    116      GlobalMemoryStatusExP globalMemoryStatusEx = (GlobalMemoryStatusExP)
    117          ::GetProcAddress(::GetModuleHandle(TEXT("kernel32.dll")), "GlobalMemoryStatusEx");
    118      if (globalMemoryStatusEx && globalMemoryStatusEx(&stat))
    119      {
    120        size = MyMin(stat.ullTotalVirtual, stat.ullTotalPhys);
    121        return true;
    122      }
    123    #endif
    124  
    125    {
    126      MEMORYSTATUS stat2;
    127      stat2.dwLength = sizeof(stat2);
    128      ::GlobalMemoryStatus(&stat2);
    129      size = MyMin(stat2.dwTotalVirtual, stat2.dwTotalPhys);
    130      return true;
    131    }
    132  
    133  #endif
    134 
    135  #else
    136 
    137  return false;
    138 
    139  #endif
    140 }
    141 
    142 }}