// Copyright 2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MINI_CHROMIUM_BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_
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#define MINI_CHROMIUM_BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_
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#include "base/macros.h"
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#include "build/build_config.h"
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#if defined(OS_APPLE)
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#if defined(__OBJC__)
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@class NSAutoreleasePool;
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#else // __OBJC__
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class NSAutoreleasePool;
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#endif // __OBJC__
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#endif // OS_APPLE
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namespace base {
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namespace mac {
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// On the Mac, ScopedNSAutoreleasePool allocates an NSAutoreleasePool when
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// instantiated and sends it a -drain message when destroyed. This allows an
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// autorelease pool to be maintained in ordinary C++ code without bringing in
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// any direct Objective-C dependency.
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//
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// On other platforms, ScopedNSAutoreleasePool is an empty object with no
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// effects. This allows it to be used directly in cross-platform code without
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// ugly #ifdefs.
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class ScopedNSAutoreleasePool {
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public:
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#if !defined(OS_APPLE)
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ScopedNSAutoreleasePool() {}
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void Recycle() { }
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#else // OS_APPLE
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ScopedNSAutoreleasePool();
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~ScopedNSAutoreleasePool();
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// Clear out the pool in case its position on the stack causes it to be
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// alive for long periods of time (such as the entire length of the app).
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// Only use then when you're certain the items currently in the pool are
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// no longer needed.
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void Recycle();
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private:
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NSAutoreleasePool* autorelease_pool_;
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#endif // OS_APPLE
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private:
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DISALLOW_COPY_AND_ASSIGN(ScopedNSAutoreleasePool);
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};
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} // namespace mac
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} // namespace base
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#endif // MINI_CHROMIUM_BASE_MAC_SCOPED_NSAUTORELEASE_POOL_H_
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