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// 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_SCOPED_NSAUTORELEASE_POOL_H_
#define BASE_SCOPED_NSAUTORELEASE_POOL_H_
#include "base/basictypes.h"
#if defined(OS_MACOSX)
#if defined(__OBJC__)
@class NSAutoreleasePool;
#else // __OBJC__
class NSAutoreleasePool;
#endif // __OBJC__
#endif // OS_MACOSX
namespace base {
// On the Mac, ScopedNSAutoreleasePool allocates an NSAutoreleasePool when
// instantiated and sends it a -drain message when destroyed. This allows an
// autorelease pool to be maintained in ordinary C++ code without bringing in
// any direct Objective-C dependency.
//
// On other platforms, ScopedNSAutoreleasePool is an empty object with no
// effects. This allows it to be used directly in cross-platform code without
// ugly #ifdefs.
class ScopedNSAutoreleasePool {
public:
#if !defined(OS_MACOSX)
ScopedNSAutoreleasePool() {}
void Recycle() { }
#else // OS_MACOSX
ScopedNSAutoreleasePool();
~ScopedNSAutoreleasePool();
// Clear out the pool in case its position on the stack causes it to be
// alive for long periods of time (such as the entire length of the app).
// Only use then when you're certain the items currently in the pool are
// no longer needed.
void Recycle();
private:
NSAutoreleasePool* autorelease_pool_;
#endif // OS_MACOSX
private:
DISALLOW_COPY_AND_ASSIGN(ScopedNSAutoreleasePool);
};
} // namespace base
#endif // BASE_SCOPED_NSAUTORELEASE_POOL_H_
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