1 : /* ***** BEGIN LICENSE BLOCK *****
2 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
3 : *
4 : * The contents of this file are subject to the Mozilla Public License Version
5 : * 1.1 (the "License"); you may not use this file except in compliance with
6 : * the License. You may obtain a copy of the License at
7 : * http://www.mozilla.org/MPL/
8 : *
9 : * Software distributed under the License is distributed on an "AS IS" basis,
10 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 : * for the specific language governing rights and limitations under the
12 : * License.
13 : *
14 : * The Original Code is mozilla.org code.
15 : *
16 : * The Initial Developer of the Original Code is
17 : * Red Hat, Inc.
18 : * Portions created by the Initial Developer are Copyright (C) 2006
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : * Kai Engert <kengert@redhat.com>
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either the GNU General Public License Version 2 or later (the "GPL"), or
26 : * 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 : #ifndef _NSPSMBACKGROUNDTHREAD_H_
39 : #define _NSPSMBACKGROUNDTHREAD_H_
40 :
41 : #include "nspr.h"
42 : #include "nscore.h"
43 : #include "mozilla/CondVar.h"
44 : #include "mozilla/Mutex.h"
45 : #include "nsNSSComponent.h"
46 :
47 : class nsPSMBackgroundThread
48 : {
49 : protected:
50 : static void PR_CALLBACK nsThreadRunner(void *arg);
51 : virtual void Run(void) = 0;
52 :
53 : // used to join the thread
54 : PRThread *mThreadHandle;
55 :
56 : // Shared mutex used for condition variables,
57 : // and to protect access to mExitState.
58 : // Derived classes may use it to protect additional
59 : // resources.
60 : mozilla::Mutex mMutex;
61 :
62 : // Used to signal the thread's Run loop when a job is added
63 : // and/or exit is requested.
64 : mozilla::CondVar mCond;
65 :
66 : bool exitRequested(::mozilla::MutexAutoLock const & proofOfLock) const;
67 984 : bool exitRequestedNoLock() const { return mExitState != ePSMThreadRunning; }
68 : nsresult postStoppedEventToMainThread(::mozilla::MutexAutoLock const & proofOfLock);
69 :
70 : private:
71 : enum {
72 : ePSMThreadRunning = 0,
73 : ePSMThreadStopRequested = 1,
74 : ePSMThreadStopped = 2
75 : } mExitState;
76 :
77 : public:
78 : nsPSMBackgroundThread();
79 : virtual ~nsPSMBackgroundThread();
80 :
81 : nsresult startThread();
82 : void requestExit();
83 : };
84 :
85 :
86 : #endif
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