base/sys_info_win.cc

   1 // Copyright (c) 2008 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/sys_info.h"
   6
   7 #include <windows.h>
   8
   9 #include "base/logging.h"
  10
  11 namespace base {
  12
  13 // static
  14 int SysInfo::NumberOfProcessors() {
  15   SYSTEM_INFO info;
  16   GetSystemInfo(&info);
  17   return static_cast<int>(info.dwNumberOfProcessors);
  18 }
  19
  20 // static
  21 int64 SysInfo::AmountOfPhysicalMemory() {
  22   MEMORYSTATUSEX memory_info;
  23   memory_info.dwLength = sizeof(memory_info);
  24   if (!GlobalMemoryStatusEx(&memory_info)) {
  25     NOTREACHED();
  26     return 0;
  27   }
  28
  29   int64 rv = static_cast<int64>(memory_info.ullTotalPhys);
  30   if (rv < 0)
  31     rv = kint64max;
  32   return rv;
  33 }
  34
  35 // static
  36 int64 SysInfo::AmountOfFreeDiskSpace(const std::wstring& path) {
  37   ULARGE_INTEGER available, total, free;
  38   if (!GetDiskFreeSpaceExW(path.c_str(), &available, &total, &free)) {
  39     return -1;
  40   }
  41   int64 rv = static_cast<int64>(available.QuadPart);
  42   if (rv < 0)
  43     rv = kint64max;
  44   return rv;
  45 }
  46
  47 }  // namespace base