From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- dom/media/SelfRef.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 dom/media/SelfRef.h (limited to 'dom/media/SelfRef.h') diff --git a/dom/media/SelfRef.h b/dom/media/SelfRef.h new file mode 100644 index 0000000000..40410abb8f --- /dev/null +++ b/dom/media/SelfRef.h @@ -0,0 +1,46 @@ +/* -*- 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/. */ + +#ifndef SELF_REF_H +#define SELF_REF_H + +#include "mozilla/Attributes.h" + +namespace mozilla { + +template +class SelfReference { + public: + SelfReference() : mHeld(false) {} + ~SelfReference() { + NS_ASSERTION(!mHeld, "Forgot to drop the self reference?"); + } + + void Take(T* t) { + if (!mHeld) { + mHeld = true; + t->AddRef(); + } + } + void Drop(T* t) { + if (mHeld) { + mHeld = false; + t->Release(); + } + } + + MOZ_IMPLICIT operator bool() const { return mHeld; } + + SelfReference(const SelfReference& aOther) = delete; + void operator=(const SelfReference& aOther) = delete; + + private: + bool mHeld; +}; + +} // namespace mozilla + +#endif // SELF_REF_H -- cgit v1.2.3