1 files changed, 142 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/Windows/System.cpp b/other-licenses/7zstub/src/CPP/Windows/System.cpp
new file mode 100644
index 0000000000..c6f8275889
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/Windows/System.cpp
@@ -0,0 +1,142 @@
+// 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
+}
+
+}}