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- /*
- * @(#)monitor.h 1.58 00/02/02
- *
- * Copyright 1994-2000 Sun Microsystems, Inc. All Rights Reserved.
- *
- * This software is the proprietary information of Sun Microsystems, Inc.
- * Use is subject to license terms.
- *
- */
-
- /*
- * Monitor interface
- */
-
- #ifndef _JAVASOFT_MONITOR_H_
- #define _JAVASOFT_MONITOR_H_
-
- #include "sys_api.h"
-
- /*
- * Used by the monitor caching machanism to mark monitors as being
- * in-use.
- */
- #define MON_LOCAL_CACHE_REF (1 << 0)
-
- /*
- * The monitor data structure:
- *
- * The use_count field counts the number of createMonitor calls yet
- * unmatched by monitorExit calls; that is, it is a count of outstanding
- * monitor entries of all threads regardless of whether those threads
- * own the monitor or are waiting on it.
- *
- * Note that because the mid[] array will hold the system-specific
- * sys_mon_t, it needs to start on a four-byte boundary lest the fields
- * of the sys_mon_t aren't properly aligned. Otherwise the flags field
- * would be shorter than a long.
- */
- typedef struct monitor_t {
- uintptr_t key; /* Monitor hash key */
- struct monitor_t *next;
- } monitor_t, *MID;
-
- #define monitorSizeof() (sizeof(monitor_t) + sysMonitorSizeof())
-
- /* A macro for accessing the sys_mon_t from the monitor_t */
- #define sysmon(m) ((sys_mon_t *) ((m)+1))
-
- typedef struct reg_mon_t {
- sys_mon_t *mid;
- char *name;
- struct reg_mon_t *next;
- } reg_mon_t;
-
- /*
- * Macros
- */
- #define MID_NULL ((MID) 0)
- #define TIMEOUT_INFINITY (int2ll(-1))
-
- /*
- * Support for the monitor registry
- */
- extern sys_mon_t *_registry_lock;
-
- #define REGISTRY_LOCK_INIT() monitorRegister(_registry_lock, \
- "Monitor registry")
- #define REGISTRY_LOCK(self) sysMonitorEnter(self, _registry_lock)
- #define REGISTRY_LOCKED(self) sysMonitorEntered(self, _registry_lock)
- #define REGISTRY_UNLOCK(self) sysMonitorExit(self, _registry_lock)
-
- /*
- * External routines.
- */
-
- /*
- * Synchronization interface
- */
- void monitorInit(monitor_t *mon);
- void monitorDestroy(monitor_t *mon);
- void monitorCacheInit(void);
-
- struct execenv;
-
- sys_mon_t * monitorEnter2(struct execenv *, uintptr_t);
- int monitorExit2(struct execenv *, uintptr_t);
- void monitorWait2(struct execenv *, uintptr_t, int64_t);
- void monitorNotify2(struct execenv *, uintptr_t);
- void monitorNotifyAll2(struct execenv *, uintptr_t);
-
- void monitorRegistryInit(void);
- void monitorRegister(sys_mon_t *, char *);
- void monitorUnregister(sys_mon_t *);
- void registeredEnumerate(void (*)(reg_mon_t *, void *), void *);
-
- char *lookupRegisteredMonitor(sys_thread_t *self, sys_mon_t *mid);
-
- /*
- * Random non-local locks without obviously better homes
- */
-
- /* The system class loader lock */
- extern sys_mon_t *_sysloader_lock;
- #define SYSLOADER_LOCK_INIT() \
- monitorRegister(_sysloader_lock, "System class loader lock")
- #define SYSLOADER_LOCK(self) sysMonitorEnter(self, _sysloader_lock)
- #define SYSLOADER_LOCKED(self) sysMonitorEntered(self, _sysloader_lock)
- #define SYSLOADER_UNLOCK(self) sysMonitorExit(self, _sysloader_lock)
-
- /* The class linking lock */
- extern sys_mon_t *_linkclass_lock;
- #define LINKCLASS_LOCK_INIT() \
- monitorRegister(_linkclass_lock, "Class linking lock")
- #define LINKCLASS_LOCK(self) sysMonitorEnter(self, _linkclass_lock)
- #define LINKCLASS_LOCKED(self) sysMonitorEntered(self, _linkclass_lock)
- #define LINKCLASS_UNLOCK(self) sysMonitorExit(self, _linkclass_lock)
-
- /* The global class table (binclasses) lock */
- extern sys_mon_t *_binclass_lock;
- #define BINCLASS_LOCK_INIT() monitorRegister(_binclass_lock, "BinClass lock")
- #define BINCLASS_LOCK(self) sysMonitorEnter(self, _binclass_lock)
- #define BINCLASS_LOCKED(self) sysMonitorEntered(self, _binclass_lock)
- #define BINCLASS_UNLOCK(self) sysMonitorExit(self, _binclass_lock)
-
- /* JNI global reference locks */
-
- extern sys_mon_t *_globalref_lock;
- #define GLOBALREF_LOCK_INIT() \
- monitorRegister(_globalref_lock, "JNI global reference lock")
- #define GLOBALREF_LOCK(self) sysMonitorEnter(self, _globalref_lock)
- #define GLOBALREF_LOCKED(self) sysMonitorEntered(self, _globalref_lock)
- #define GLOBALREF_UNLOCK(self) sysMonitorExit(self, _globalref_lock)
-
- /*
- * Support for thread queue
- */
- extern sys_mon_t *_queue_lock; /* Protects thread queue, thread count */
-
- #define QUEUE_LOCK_INIT() monitorRegister(_queue_lock, "Thread queue lock")
- #define QUEUE_LOCK(self) sysMonitorEnter(self, _queue_lock)
- #define QUEUE_LOCKED(self) sysMonitorEntered(self, _queue_lock)
- #define QUEUE_UNLOCK(self) sysMonitorExit(self, _queue_lock)
- #define QUEUE_NOTIFY(self) sysMonitorNotify(self, _queue_lock)
- #define QUEUE_NOTIFYALL(self) sysMonitorNotifyAll(self, _queue_lock)
- #define QUEUE_WAIT(self) sysMonitorWait(self, _queue_lock, \
- SYS_TIMEOUT_INFINITY)
-
- extern sys_mon_t *_code_lock;
-
- #endif /* !_JAVASOFT_MONITOR_H_ */
-