1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * licence, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
21 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GLib Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GLib at ftp://ftp.gtk.org/pub/gtk/.
27 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
28 #error "Only <glib.h> can be included directly."
31 #ifndef __G_THREAD_H__
32 #define __G_THREAD_H__
34 #include <glib/gatomic.h>
35 #include <glib/gerror.h>
39 #define G_THREAD_ERROR g_thread_error_quark ()
40 GQuark
g_thread_error_quark (void);
44 G_THREAD_ERROR_AGAIN
/* Resource temporarily unavailable */
47 typedef gpointer (*GThreadFunc
) (gpointer data
);
49 typedef struct _GThread GThread
;
51 typedef union _GMutex GMutex
;
52 typedef struct _GRecMutex GRecMutex
;
53 typedef struct _GRWLock GRWLock
;
54 typedef struct _GCond GCond
;
55 typedef struct _GPrivate GPrivate
;
56 typedef struct _GOnce GOnce
;
86 #define G_PRIVATE_INIT(notify) { NULL, (notify), { NULL, NULL } }
91 GDestroyNotify notify
;
97 G_ONCE_STATUS_NOTCALLED
,
98 G_ONCE_STATUS_PROGRESS
,
102 #define G_ONCE_INIT { G_ONCE_STATUS_NOTCALLED, NULL }
105 volatile GOnceStatus status
;
106 volatile gpointer retval
;
109 #define G_LOCK_NAME(name) g__ ## name ## _lock
110 #define G_LOCK_DEFINE_STATIC(name) static G_LOCK_DEFINE (name)
111 #define G_LOCK_DEFINE(name) GMutex G_LOCK_NAME (name)
112 #define G_LOCK_EXTERN(name) extern GMutex G_LOCK_NAME (name)
115 # define G_LOCK(name) G_STMT_START{ \
116 g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, \
117 "file %s: line %d (%s): locking: %s ", \
118 __FILE__, __LINE__, G_STRFUNC, \
120 g_mutex_lock (&G_LOCK_NAME (name)); \
122 # define G_UNLOCK(name) G_STMT_START{ \
123 g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, \
124 "file %s: line %d (%s): unlocking: %s ", \
125 __FILE__, __LINE__, G_STRFUNC, \
127 g_mutex_unlock (&G_LOCK_NAME (name)); \
129 # define G_TRYLOCK(name) \
130 (g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, \
131 "file %s: line %d (%s): try locking: %s ", \
132 __FILE__, __LINE__, G_STRFUNC, \
133 #name), g_mutex_trylock (&G_LOCK_NAME (name)))
134 #else /* !G_DEBUG_LOCKS */
135 # define G_LOCK(name) g_mutex_lock (&G_LOCK_NAME (name))
136 # define G_UNLOCK(name) g_mutex_unlock (&G_LOCK_NAME (name))
137 # define G_TRYLOCK(name) g_mutex_trylock (&G_LOCK_NAME (name))
138 #endif /* !G_DEBUG_LOCKS */
140 GThread
* g_thread_ref (GThread
*thread
);
141 void g_thread_unref (GThread
*thread
);
142 GThread
* g_thread_new (const gchar
*name
,
145 GThread
* g_thread_try (const gchar
*name
,
149 GThread
* g_thread_new_full (const gchar
*name
,
154 GThread
* g_thread_self (void);
155 void g_thread_exit (gpointer retval
);
156 gpointer
g_thread_join (GThread
*thread
);
157 void g_thread_yield (void);
160 void g_mutex_init (GMutex
*mutex
);
161 void g_mutex_clear (GMutex
*mutex
);
162 void g_mutex_lock (GMutex
*mutex
);
163 gboolean
g_mutex_trylock (GMutex
*mutex
);
164 void g_mutex_unlock (GMutex
*mutex
);
166 void g_rw_lock_init (GRWLock
*rw_lock
);
167 void g_rw_lock_clear (GRWLock
*rw_lock
);
168 void g_rw_lock_writer_lock (GRWLock
*rw_lock
);
169 gboolean
g_rw_lock_writer_trylock (GRWLock
*rw_lock
);
170 void g_rw_lock_writer_unlock (GRWLock
*rw_lock
);
171 void g_rw_lock_reader_lock (GRWLock
*rw_lock
);
172 gboolean
g_rw_lock_reader_trylock (GRWLock
*rw_lock
);
173 void g_rw_lock_reader_unlock (GRWLock
*rw_lock
);
175 void g_rec_mutex_init (GRecMutex
*rec_mutex
);
176 void g_rec_mutex_clear (GRecMutex
*rec_mutex
);
177 void g_rec_mutex_lock (GRecMutex
*rec_mutex
);
178 gboolean
g_rec_mutex_trylock (GRecMutex
*rec_mutex
);
179 void g_rec_mutex_unlock (GRecMutex
*rec_mutex
);
181 void g_cond_init (GCond
*cond
);
182 void g_cond_clear (GCond
*cond
);
183 void g_cond_wait (GCond
*cond
,
185 void g_cond_signal (GCond
*cond
);
186 void g_cond_broadcast (GCond
*cond
);
187 gboolean
g_cond_timed_wait (GCond
*cond
,
190 gboolean
g_cond_timedwait (GCond
*cond
,
194 gpointer
g_private_get (GPrivate
*key
);
195 void g_private_set (GPrivate
*key
,
197 void g_private_replace (GPrivate
*key
,
200 gpointer
g_once_impl (GOnce
*once
,
203 gboolean
g_once_init_enter (volatile void *location
);
204 void g_once_init_leave (volatile void *location
,
207 #ifdef G_ATOMIC_OP_MEMORY_BARRIER_NEEDED
208 # define g_once(once, func, arg) g_once_impl ((once), (func), (arg))
209 #else /* !G_ATOMIC_OP_MEMORY_BARRIER_NEEDED*/
210 # define g_once(once, func, arg) \
211 (((once)->status == G_ONCE_STATUS_READY) ? \
213 g_once_impl ((once), (func), (arg)))
214 #endif /* G_ATOMIC_OP_MEMORY_BARRIER_NEEDED */
217 # define g_once_init_enter(location) \
218 (G_GNUC_EXTENSION ({ \
219 G_STATIC_ASSERT (sizeof *(location) == sizeof (gpointer)); \
220 (void) (0 ? (gpointer) *(location) : 0); \
221 (!g_atomic_pointer_get (location) && \
222 g_once_init_enter (location)); \
224 # define g_once_init_leave(location, result) \
225 (G_GNUC_EXTENSION ({ \
226 G_STATIC_ASSERT (sizeof *(location) == sizeof (gpointer)); \
227 (void) (0 ? *(location) = (result) : 0); \
228 g_once_init_leave ((location), (gsize) (result)); \
231 # define g_once_init_enter(location) \
232 (g_once_init_enter((location)))
233 # define g_once_init_leave(location, result) \
234 (g_once_init_leave((location), (gsize) (result)))
239 #endif /* __G_THREAD_H__ */