| /* |
| * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| #ifndef _MONITOR_ |
| #define _MONITOR_ |
| |
| #include <windows.h> |
| |
| class Monitor { |
| public: |
| Monitor(); |
| ~Monitor(); |
| |
| void lock(); |
| void unlock(); |
| // Default time is forever (i.e, zero). Returns true if it times-out, otherwise |
| // false. |
| bool wait(long timeout = 0); |
| bool notify(); |
| bool notifyAll(); |
| |
| private: |
| HANDLE owner(); |
| void setOwner(HANDLE owner); |
| bool ownedBySelf(); |
| |
| HANDLE _owner; |
| long _lock_count; |
| HANDLE _lock_event; // Auto-reset event for blocking in lock() |
| HANDLE _wait_event; // Manual-reset event for notifications |
| long _counter; // Current number of notifications |
| long _waiters; // Number of threads waiting for notification |
| long _tickets; // Number of waiters to be notified |
| }; |
| |
| |
| #endif // #defined _MONITOR_ |