gecko/xpcom/base/AvailableMemoryTracker.h
Justin Lebar 13b09b8b45 Bug 741540 - Add AvailableMemoryTracker's hooks before any threads have started up. r=bsmedberg
--HG--
extra : rebase_source : 5135df39b3ae022e75f8651b2e10a378edbae158
2012-04-09 13:53:08 -04:00

70 lines
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 ci et: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla.org code.
*
* The Initial Developer of the Original Code is the Mozilla Foundation.
*
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Justin Lebar <justin.lebar@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
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*
* ***** END LICENSE BLOCK ***** */
#ifndef mozilla_AvailableMemoryTracker_h
#define mozilla_AvailableMemoryTracker_h
namespace mozilla {
namespace AvailableMemoryTracker {
// The AvailableMemoryTracker is implemented only on Windows. But to make
// callers' lives easier, we stub out empty calls for all its public functions.
// So you can always initialize the AvailableMemoryTracker; it just might not
// do anything.
//
// Init() must be called before any other threads have started, because it
// modifies the in-memory implementations of some DLL functions in
// non-thread-safe ways.
//
// The hooks don't do anything until Activate() is called. It's an error to
// call Activate() without first calling Init().
#if defined(XP_WIN)
void Init();
void Activate();
#else
void Init() {}
void Activate() {}
#endif
} // namespace AvailableMemoryTracker
} // namespace mozilla
#endif // ifndef mozilla_AvailableMemoryTracker_h