Add AssertIOAllowed check in the SysInfo::AmountOfFreeDiskSpace.

base/sys_info_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/sys_info.h"
 
 #include <windows.h>
 
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/stringprintf.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/win/windows_version.h"
 
 namespace base {
 
 // static
 int SysInfo::NumberOfProcessors() {
   return win::OSInfo::GetInstance()->processors();
 }
 
 // static
 int64 SysInfo::AmountOfPhysicalMemory() {
   MEMORYSTATUSEX memory_info;
   memory_info.dwLength = sizeof(memory_info);
   if (!GlobalMemoryStatusEx(&memory_info)) {
     NOTREACHED();
     return 0;
   }
 
   int64 rv = static_cast<int64>(memory_info.ullTotalPhys);
   if (rv < 0)
     rv = kint64max;
   return rv;
 }
 
 // static
 int64 SysInfo::AmountOfFreeDiskSpace(const FilePath& path) {
+  base::ThreadRestrictions::AssertIOAllowed();
+
   ULARGE_INTEGER available, total, free;
   if (!GetDiskFreeSpaceExW(path.value().c_str(), &available, &total, &free)) {
     return -1;
   }
   int64 rv = static_cast<int64>(available.QuadPart);
   if (rv < 0)
     rv = kint64max;
   return rv;
 }
 
@@ skipping 36 matching lines @@
 void SysInfo::OperatingSystemVersionNumbers(int32* major_version,
                                             int32* minor_version,
                                             int32* bugfix_version) {
   win::OSInfo* os_info = win::OSInfo::GetInstance();
   *major_version = os_info->version_number().major;
   *minor_version = os_info->version_number().minor;
   *bugfix_version = 0;
 }
 
 }  // namespace base