jeremy@chromium.org
c1b15e82a5
Review URL: http://codereview.chromium.org/151202 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@19809 0039d316-1c4b-4281-b951-d872f2087c98
72 linhas
2.3 KiB
C++
72 linhas
2.3 KiB
C++
// Copyright (c) 2008 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.
|
|
|
|
#ifndef BASE_SYS_INFO_H_
|
|
#define BASE_SYS_INFO_H_
|
|
|
|
#include "base/basictypes.h"
|
|
|
|
#include <string>
|
|
|
|
namespace base {
|
|
|
|
class SysInfo {
|
|
public:
|
|
// Return the number of logical processors/cores on the current machine.
|
|
static int NumberOfProcessors();
|
|
|
|
// Return the number of bytes of physical memory on the current machine.
|
|
static int64 AmountOfPhysicalMemory();
|
|
|
|
// Return the number of megabytes of physical memory on the current machine.
|
|
static int AmountOfPhysicalMemoryMB() {
|
|
return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024);
|
|
}
|
|
|
|
// Return the available disk space in bytes on the volume containing |path|,
|
|
// or -1 on failure.
|
|
static int64 AmountOfFreeDiskSpace(const std::wstring& path);
|
|
|
|
// Return true if the given environment variable is defined.
|
|
// TODO: find a better place for HasEnvVar.
|
|
static bool HasEnvVar(const wchar_t* var);
|
|
|
|
// Return the value of the given environment variable
|
|
// or an empty string if not defined.
|
|
// TODO: find a better place for GetEnvVar.
|
|
static std::wstring GetEnvVar(const wchar_t* var);
|
|
|
|
// Returns the name of the host operating system.
|
|
static std::string OperatingSystemName();
|
|
|
|
// Returns the version of the host operating system.
|
|
static std::string OperatingSystemVersion();
|
|
|
|
// Retrieves detailed numeric values for the OS version.
|
|
// TODO(port): Implement a Linux version of this method and enable the
|
|
// corresponding unit test.
|
|
static void OperatingSystemVersionNumbers(int32 *major_version,
|
|
int32 *minor_version,
|
|
int32 *bugfix_version);
|
|
|
|
// Returns the CPU architecture of the system. Exact return value may differ
|
|
// across platforms.
|
|
static std::string CPUArchitecture();
|
|
|
|
// Returns the pixel dimensions of the primary display via the
|
|
// width and height parameters.
|
|
static void GetPrimaryDisplayDimensions(int* width, int* height);
|
|
|
|
// Return the number of displays.
|
|
static int DisplayCount();
|
|
|
|
// Return the smallest amount of memory (in bytes) which the VM system will
|
|
// allocate.
|
|
static size_t VMAllocationGranularity();
|
|
};
|
|
|
|
} // namespace base
|
|
|
|
#endif // BASE_SYS_INFO_H_
|