Move implementation of QuotaManager.getVolumeInfo to base::SysInfo.

base/sys_info_win.cc

 // Copyright 2015 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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 12 matching lines @@
   memory_info.dwLength = sizeof(memory_info);
   if (!GlobalMemoryStatusEx(&memory_info)) {
     NOTREACHED();
     return 0;
   }
 
   int64_t rv = static_cast<int64_t>(memory_info.*memory_field);
   return rv < 0 ? std::numeric_limits<int64_t>::max() : rv;
 }
 
+bool GetDiskSpaceInfo(const base::FilePath& path,
+                      int64_t* available_bytes,
+                      int64_t* total_bytes) {
+  ULARGE_INTEGER available, total, free;

[Lei Zhang, 2016/06/10 17:43:11]

One variable per line here too, but don't worry about it.

+  if (!GetDiskFreeSpaceExW(path.value().c_str(), &available, &total, &free))
+    return false;
+
+  if (available_bytes) {
+    *available_bytes = static_cast<int64_t>(available.QuadPart);
+    if (*available_bytes < 0)
+      *available_bytes = std::numeric_limits<int64_t>::max();
+  }
+  if (total_bytes) {
+    *total_bytes = static_cast<int64_t>(total.QuadPart);
+    if (*total_bytes < 0)
+      *total_bytes = std::numeric_limits<int64_t>::max();
+  }
+  return true;
+}
+
 }  // namespace
 
 namespace base {
 
 // static
 int SysInfo::NumberOfProcessors() {
   return win::OSInfo::GetInstance()->processors();
 }
 
 // static
 int64_t SysInfo::AmountOfPhysicalMemory() {
   return AmountOfMemory(&MEMORYSTATUSEX::ullTotalPhys);
 }
 
 // static
 int64_t SysInfo::AmountOfAvailablePhysicalMemory() {
   return AmountOfMemory(&MEMORYSTATUSEX::ullAvailPhys);
 }
 
 // static
 int64_t SysInfo::AmountOfVirtualMemory() {
   return AmountOfMemory(&MEMORYSTATUSEX::ullTotalVirtual);
 }
 
 // static
 int64_t SysInfo::AmountOfFreeDiskSpace(const FilePath& path) {
   ThreadRestrictions::AssertIOAllowed();
 
-  ULARGE_INTEGER available, total, free;
-  if (!GetDiskFreeSpaceExW(path.value().c_str(), &available, &total, &free))
+  int64_t available;
+  if (!GetDiskSpaceInfo(path, &available, nullptr))
     return -1;
+  return available;
+}
 
-  int64_t rv = static_cast<int64_t>(available.QuadPart);
-  return rv < 0 ? std::numeric_limits<int64_t>::max() : rv;
+// static
+int64_t SysInfo::AmountOfTotalDiskSpace(const FilePath& path) {
+  ThreadRestrictions::AssertIOAllowed();
+
+  int64_t total;
+  if (!GetDiskSpaceInfo(path, nullptr, &total))
+    return -1;
+  return total;
 }
 
 std::string SysInfo::OperatingSystemName() {
   return "Windows NT";
 }
 
 // static
 std::string SysInfo::OperatingSystemVersion() {
   win::OSInfo* os_info = win::OSInfo::GetInstance();
   win::OSInfo::VersionNumber version_number = os_info->version_number();
@@ skipping 43 matching lines @@
 void SysInfo::OperatingSystemVersionNumbers(int32_t* major_version,
                                             int32_t* minor_version,
                                             int32_t* 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