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comparison agent/src/os/win32/Monitor.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 #ifndef _MONITOR_
26 #define _MONITOR_
27
28 #include <windows.h>
29
30 class Monitor {
31 public:
32 Monitor();
33 ~Monitor();
34
35 void lock();
36 void unlock();
37 // Default time is forever (i.e, zero). Returns true if it times-out, otherwise
38 // false.
39 bool wait(long timeout = 0);
40 bool notify();
41 bool notifyAll();
42
43 private:
44 HANDLE owner();
45 void setOwner(HANDLE owner);
46 bool ownedBySelf();
47
48 HANDLE _owner;
49 long _lock_count;
50 HANDLE _lock_event; // Auto-reset event for blocking in lock()
51 HANDLE _wait_event; // Manual-reset event for notifications
52 long _counter; // Current number of notifications
53 long _waiters; // Number of threads waiting for notification
54 long _tickets; // Number of waiters to be notified
55 };
56
57
58 #endif // #defined _MONITOR_