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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
| commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
| tree | f435a8308119effd964b339f76abb83a57c29483 /xpcom/threads/LeakRefPtr.h | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream/124.0.1.tar.xz firefox-upstream/124.0.1.zip | |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'xpcom/threads/LeakRefPtr.h')
| -rw-r--r-- | xpcom/threads/LeakRefPtr.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/xpcom/threads/LeakRefPtr.h b/xpcom/threads/LeakRefPtr.h new file mode 100644 index 0000000000..ee260dad7e --- /dev/null +++ b/xpcom/threads/LeakRefPtr.h @@ -0,0 +1,48 @@ +/* -*- 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 |