| /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS IS" basis, |
| * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| * for the specific language governing rights and limitations under the |
| * License. |
| * |
| * The Original Code is mozilla.org code. |
| * |
| * The Initial Developer of the Original Code is |
| * The Mozilla Foundation. |
| * Portions created by the Initial Developer are Copyright (C) 2006 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either of the GNU General Public License Version 2 or later (the "GPL"), |
| * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
| * of those above. If you wish to allow use of your version of this file only |
| * under the terms of either the GPL or the LGPL, and not to allow others to |
| * use your version of this file under the terms of the MPL, indicate your |
| * decision by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL or the LGPL. If you do not delete |
| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the MPL, the GPL or the LGPL. |
| * |
| * ***** END LICENSE BLOCK ***** */ |
| |
| #ifndef nsCycleCollector_h__ |
| #define nsCycleCollector_h__ |
| |
| // NOTE: If you use header files to define DEBUG_CC, you must do so here |
| // *and* in nsCycleCollectionParticipant.h |
| //#define DEBUG_CC |
| |
| class nsISupports; |
| class nsCycleCollectionParticipant; |
| class nsCycleCollectionTraversalCallback; |
| |
| // An nsCycleCollectionLanguageRuntime is a per-language object that |
| // implements language-specific aspects of the cycle collection task. |
| |
| struct nsCycleCollectionLanguageRuntime |
| { |
| virtual nsresult BeginCycleCollection(nsCycleCollectionTraversalCallback &cb) = 0; |
| virtual nsresult FinishCycleCollection() = 0; |
| virtual nsCycleCollectionParticipant *ToParticipant(void *p) = 0; |
| #ifdef DEBUG_CC |
| virtual void PrintAllReferencesTo(void *p) = 0; |
| #endif |
| }; |
| |
| nsresult nsCycleCollector_startup(); |
| // Returns the number of collected nodes. |
| NS_COM PRUint32 nsCycleCollector_collect(); |
| NS_COM PRUint32 nsCycleCollector_suspectedCount(); |
| void nsCycleCollector_shutdown(); |
| |
| // The JS runtime is special, it needs to call cycle collection during its GC. |
| // If the JS runtime is registered nsCycleCollector_collect will call |
| // nsCycleCollectionJSRuntime::Collect which will call |
| // nsCycleCollector_doCollect, else nsCycleCollector_collect will call |
| // nsCycleCollector_doCollect directly. |
| struct nsCycleCollectionJSRuntime : public nsCycleCollectionLanguageRuntime |
| { |
| /** |
| * Runs cycle collection and returns whether cycle collection collected |
| * anything. |
| */ |
| virtual PRBool Collect() = 0; |
| }; |
| // Returns PR_TRUE if cycle collection was started. |
| NS_COM PRBool nsCycleCollector_beginCollection(); |
| // Returns PR_TRUE if some nodes were collected. Should only be called after |
| // nsCycleCollector_beginCollection() returned PR_TRUE. |
| NS_COM PRBool nsCycleCollector_finishCollection(); |
| |
| #ifdef DEBUG |
| NS_COM void nsCycleCollector_DEBUG_shouldBeFreed(nsISupports *n); |
| NS_COM void nsCycleCollector_DEBUG_wasFreed(nsISupports *n); |
| #endif |
| |
| // Helpers for interacting with language-identified scripts |
| |
| NS_COM void nsCycleCollector_registerRuntime(PRUint32 langID, nsCycleCollectionLanguageRuntime *rt); |
| NS_COM void nsCycleCollector_forgetRuntime(PRUint32 langID); |
| |
| #endif // nsCycleCollector_h__ |