1// Copyright (c) 2011 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#ifndef BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_
6#define BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_
7
8#include "base/base_export.h"
9#include "base/macros.h"
10
11#if defined(__OBJC__)
12@class NSAutoreleasePool;
13#else  // __OBJC__
14class NSAutoreleasePool;
15#endif  // __OBJC__
16
17namespace base {
18namespace mac {
19
20// ScopedNSAutoreleasePool allocates an NSAutoreleasePool when instantiated and
21// sends it a -drain message when destroyed.  This allows an autorelease pool to
22// be maintained in ordinary C++ code without bringing in any direct Objective-C
23// dependency.
24
25class BASE_EXPORT ScopedNSAutoreleasePool {
26 public:
27  ScopedNSAutoreleasePool();
28  ~ScopedNSAutoreleasePool();
29
30  // Clear out the pool in case its position on the stack causes it to be
31  // alive for long periods of time (such as the entire length of the app).
32  // Only use then when you're certain the items currently in the pool are
33  // no longer needed.
34  void Recycle();
35 private:
36  NSAutoreleasePool* autorelease_pool_;
37
38 private:
39  DISALLOW_COPY_AND_ASSIGN(ScopedNSAutoreleasePool);
40};
41
42}  // namespace mac
43}  // namespace base
44
45#endif  // BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_
46