зеркало из https://github.com/mozilla/gecko-dev.git
53 строки
1.2 KiB
C++
53 строки
1.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Smart pointer which leaks its owning refcounted object by default. */
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#ifndef LeakRefPtr_h
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#define LeakRefPtr_h
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#include "mozilla/AlreadyAddRefed.h"
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namespace mozilla {
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/**
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* Instance of this class behaves like a raw pointer which leaks the
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* resource it's owning if not explicitly released.
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*/
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template<class T>
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class LeakRefPtr
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{
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public:
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explicit LeakRefPtr(already_AddRefed<T>&& aPtr)
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: mRawPtr(aPtr.take()) { }
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explicit operator bool() const { return !!mRawPtr; }
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LeakRefPtr<T>& operator=(already_AddRefed<T>&& aPtr)
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{
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mRawPtr = aPtr.take();
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return *this;
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}
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T* get() const { return mRawPtr; }
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already_AddRefed<T> take()
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{
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T* rawPtr = mRawPtr;
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mRawPtr = nullptr;
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return already_AddRefed<T>(rawPtr);
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}
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void release() { NS_RELEASE(mRawPtr); }
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private:
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T* MOZ_OWNING_REF mRawPtr;
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};
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} // namespace mozilla
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#endif // LeakRefPtr_h
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