Mercurial > hg > graal-compiler
diff agent/src/os/win32/Monitor.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/os/win32/Monitor.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,58 @@ +/* + * 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_