From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- layout/build/nsLayoutStatics.h | 56 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 layout/build/nsLayoutStatics.h (limited to 'layout/build/nsLayoutStatics.h') diff --git a/layout/build/nsLayoutStatics.h b/layout/build/nsLayoutStatics.h new file mode 100644 index 0000000000..984f7c984e --- /dev/null +++ b/layout/build/nsLayoutStatics.h @@ -0,0 +1,56 @@ +/* -*- 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 nsLayoutStatics_h__ +#define nsLayoutStatics_h__ + +#include "nscore.h" +#include "MainThreadUtils.h" +#include "nsISupportsImpl.h" +#include "nsDebug.h" + +// This isn't really a class, it's a namespace for static methods. +// Documents and other objects can hold a reference to the layout static +// objects so that they last past the xpcom-shutdown notification. + +class nsLayoutStatics { + public: + // Called by the layout module constructor. This call performs an AddRef() + // internally. + static nsresult Initialize(); + + static void AddRef() { + NS_ASSERTION(NS_IsMainThread(), + "nsLayoutStatics reference counting must be on main thread"); + + NS_ASSERTION(sLayoutStaticRefcnt, + "nsLayoutStatics already dropped to zero!"); + + ++sLayoutStaticRefcnt; + NS_LOG_ADDREF(&sLayoutStaticRefcnt, sLayoutStaticRefcnt, "nsLayoutStatics", + 1); + } + static void Release() { + NS_ASSERTION(NS_IsMainThread(), + "nsLayoutStatics reference counting must be on main thread"); + + --sLayoutStaticRefcnt; + NS_LOG_RELEASE(&sLayoutStaticRefcnt, sLayoutStaticRefcnt, + "nsLayoutStatics"); + + if (!sLayoutStaticRefcnt) Shutdown(); + } + + private: + // not to be called! + nsLayoutStatics(); + + static void Shutdown(); + + static nsrefcnt sLayoutStaticRefcnt; +}; + +#endif // nsLayoutStatics_h__ -- cgit v1.2.3