1 /*

     2  * Copyright (c) 1994, 1998, Oracle and/or its affiliates. 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 /*

    27  * Win32 implementation of Java monitors

    28  */

    29 

    30 #ifndef _JAVASOFT_WIN32_MONITOR_MD_H_

    31 #define _JAVASOFT_WIN32_MONITOR_MD_H_

    32 

    33 #include <windows.h>

    34 

    35 #include "threads_md.h"

    36 #include "mutex_md.h"

    37 

    38 #define SYS_MID_NULL ((sys_mon_t *) 0)

    39 

    40 typedef struct sys_mon {

    41     long            atomic_count;   /* Variable for atomic compare swap */

    42     HANDLE          semaphore;      /* Semaphore used for the contention */

    43     sys_thread_t   *monitor_owner;  /* Current owner of this monitor */

    44     long            entry_count;    /* Recursion depth */

    45     sys_thread_t   *monitor_waiter; /* Monitor waiting queue head */

    46     long            waiter_count;   /* For debugging purpose */

    47 } sys_mon_t;

    48 

    49 #endif /* !_JAVASOFT_WIN32_MONITOR_MD_H_ */