| /* |
| * Copyright (c) 1994, 1998, Oracle and/or its affiliates. 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Monitor interface 10/25/94 |
| * |
| * Private data structures and interfaces used in the monitor code. |
| * This file is used to share declarations and such between the different |
| * files implementing monitors. It does not contain exported API. |
| */ |
| |
| #ifndef _JAVASOFT_SOLARIS_MONITOR_MD_H_ |
| #define _JAVASOFT_SOLARIS_MONITOR_MD_H_ |
| |
| #include <mutex_md.h> |
| #include <condvar_md.h> |
| #include <threads_md.h> |
| |
| /* |
| * Type definitions. |
| */ |
| |
| typedef struct monitor_waiter monitor_waiter_t; |
| typedef struct monitor_wait_queue monitor_wait_queue_t; |
| |
| /* Element of the MonitorWaitQ - representing thread doing a monitor wait */ |
| /* |
| * The only reason we do the queueing is for sysMonitorDumpInfo. |
| * The counting, though, is used to avoid extraneous calls to |
| * condvarBroadcast and condvarSignal, for instance. |
| */ |
| struct monitor_waiter { |
| monitor_waiter_t *next; |
| monitor_waiter_t **prev; |
| sys_thread_t *waiting_thread; |
| }; |
| |
| struct monitor_wait_queue { |
| monitor_waiter_t *head; /* linked list of waiting threads */ |
| short count; /* number of waiters on the list */ |
| }; |
| |
| #define ANY_WAITING(mwq) ((mwq).count > 0) |
| #define INIT_MONITOR_WAIT_QUEUE(mwq) { (mwq).head = NULL; (mwq).count = 0; } |
| |
| /* The system-level monitor data structure */ |
| struct sys_mon { |
| mutex_t mutex; /* The monitor's mutex */ |
| condvar_t cv_monitor; /* Notify those doing monitorWait on |
| the monitor */ |
| /* |
| * Threads waiting on either of the above condvars put themselves |
| * on one of these lists. |
| */ |
| monitor_wait_queue_t mwait_queue; /* Head of MonitorWaitQ */ |
| |
| /* Thread currently executing in this monitor */ |
| sys_thread_t *monitor_owner; |
| long entry_count; /* Recursion depth */ |
| int contention_count; |
| }; |
| |
| void initializeContentionCountMutex(); |
| |
| typedef enum { |
| ASYNC_REGISTER, |
| ASYNC_UNREGISTER |
| } async_action_t; |
| |
| /* |
| * Macros |
| */ |
| |
| #define SYS_MID_NULL ((sys_mon_t *) 0) |
| |
| typedef enum { |
| SYS_ASYNC_MON_ALARM = 1, |
| SYS_ASYNC_MON_IO, |
| SYS_ASYNC_MON_EVENT, |
| SYS_ASYNC_MON_CHILD, |
| SYS_ASYNC_MON_MAX |
| } async_mon_key_t; |
| |
| #define SYS_ASYNC_MON_INPUT SYS_ASYNC_MON_IO |
| #define SYS_ASYNC_MON_OUTPUT SYS_ASYNC_MON_IO |
| |
| sys_mon_t *asyncMon(async_mon_key_t); |
| |
| #endif /* !_JAVASOFT_SOLARIS_MONITOR_MD_H_ */ |