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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Smart pointer which leaks its owning refcounted object by default. */
#ifndef MaybeLeakRefPtr_h
#define MaybeLeakRefPtr_h
#include "mozilla/RefPtr.h"
namespace mozilla {
/**
* Instances of this class are a RefPtr<T> which may not call Release() from its
* destructor. This is done by leaking the stored reference on destruction.
*
* This behaviour is customizable for methods like nsIEventTarget::Dispatch
* which have customizable leak-on-error semantics.
*/
template <class T>
class MaybeLeakRefPtr : public RefPtr<T> {
public:
explicit MaybeLeakRefPtr(already_AddRefed<T>&& aPtr, bool aAutoRelease)
: RefPtr<T>(std::move(aPtr)), mAutoRelease(aAutoRelease) {}
MaybeLeakRefPtr(const MaybeLeakRefPtr&) = delete;
MaybeLeakRefPtr& operator=(const MaybeLeakRefPtr&) = delete;
~MaybeLeakRefPtr() {
if (!mAutoRelease) {
// If mAutoRelease is not set, take the value out of this and leak it
// before the base class destructor would call Release().
RefPtr<T>::forget().leak();
}
}
private:
bool mAutoRelease = false;
};
} // namespace mozilla
#endif // MaybeLeakRefPtr_h
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