1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is Mozilla Foundation.
18 : * Portions created by the Initial Developer are Copyright (C) 2007
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : * Jonas Sicking <jonas@sicking.cc> (Original Author)
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
28 : * of those above. If you wish to allow use of your version of this file only
29 : * under the terms of either the GPL or the LGPL, and not to allow others to
30 : * use your version of this file under the terms of the MPL, indicate your
31 : * decision by deleting the provisions above and replace them with the notice
32 : * and other provisions required by the GPL or the LGPL. If you do not delete
33 : * the provisions above, a recipient may use your version of this file under
34 : * the terms of any one of the MPL, the GPL or the LGPL.
35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #include "nsIObserver.h"
39 : #include "nsCycleCollectionParticipant.h"
40 :
41 : class nsCCUncollectableMarker : public nsIObserver
42 : {
43 : NS_DECL_ISUPPORTS
44 : NS_DECL_NSIOBSERVER
45 :
46 : /**
47 : * Inits a global nsCCUncollectableMarker. Should only be called once.
48 : */
49 : static nsresult Init();
50 :
51 : /**
52 : * Checks if we're collecting during a given generation
53 : */
54 547052 : static bool InGeneration(PRUint32 aGeneration)
55 : {
56 547052 : return aGeneration && aGeneration == sGeneration;
57 : }
58 :
59 137185 : static bool InGeneration(nsCycleCollectionTraversalCallback &cb,
60 : PRUint32 aGeneration)
61 : {
62 137185 : return InGeneration(aGeneration) && !cb.WantAllTraces();
63 : }
64 :
65 : static PRUint32 sGeneration;
66 :
67 : private:
68 1404 : nsCCUncollectableMarker() {}
69 :
70 : };
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