mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-11 08:13:35 +00:00
dcee012964
Differential Revision: https://phabricator.services.mozilla.com/D13684 --HG-- extra : moz-landing-system : lando
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/* -*- 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__
|