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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /xpcom/threads/LeakRefPtr.h | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'xpcom/threads/LeakRefPtr.h')
| -rw-r--r-- | xpcom/threads/LeakRefPtr.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/xpcom/threads/LeakRefPtr.h b/xpcom/threads/LeakRefPtr.h new file mode 100644 index 000000000..56f5d90af --- /dev/null +++ b/xpcom/threads/LeakRefPtr.h @@ -0,0 +1,52 @@ +/* -*- 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 LeakRefPtr_h +#define LeakRefPtr_h + +#include "mozilla/AlreadyAddRefed.h" + +namespace mozilla { + +/** + * Instance of this class behaves like a raw pointer which leaks the + * resource it's owning if not explicitly released. + */ +template<class T> +class LeakRefPtr +{ +public: + explicit LeakRefPtr(already_AddRefed<T>&& aPtr) + : mRawPtr(aPtr.take()) { } + + explicit operator bool() const { return !!mRawPtr; } + + LeakRefPtr<T>& operator=(already_AddRefed<T>&& aPtr) + { + mRawPtr = aPtr.take(); + return *this; + } + + T* get() const { return mRawPtr; } + + already_AddRefed<T> take() + { + T* rawPtr = mRawPtr; + mRawPtr = nullptr; + return already_AddRefed<T>(rawPtr); + } + + void release() { NS_RELEASE(mRawPtr); } + +private: + T* MOZ_OWNING_REF mRawPtr; +}; + +} // namespace mozilla + +#endif // LeakRefPtr_h |