1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * gthread.c: posix thread system implementation
5 * Copyright 1998 Sebastian Wilhelmi; University of Karlsruhe
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
24 * Modified by the GLib Team and others 1997-1999. See the AUTHORS
25 * file for a list of people on the GLib Team. See the ChangeLog
26 * files for a list of changes. These files are distributed with
27 * GLib at ftp://ftp.gtk.org/pub/gtk/.
37 #ifdef HAVE_SYS_TIME_H
41 #define posix_print_error( name, num ) \
42 g_error( "file %s: line %d (%s): error %s during %s", \
43 __FILE__, __LINE__, G_GNUC_PRETTY_FUNCTION, \
44 g_strerror((num)), #name )
46 #define posix_check_for_error( what ) G_STMT_START{ \
48 if( error ) { posix_print_error( what, error ); } \
52 g_mutex_new_posix_impl (void)
54 GMutex
*result
= (GMutex
*) g_new (pthread_mutex_t
, 1);
55 posix_check_for_error (pthread_mutex_init ((pthread_mutex_t
*) result
, NULL
));
60 g_mutex_free_posix_impl (GMutex
* mutex
)
62 posix_check_for_error (pthread_mutex_destroy ((pthread_mutex_t
*) mutex
));
66 /* NOTE: the functions g_mutex_lock and g_mutex_unlock may not use
67 functions from gmem.c and gmessages.c; */
69 /* pthread_mutex_lock, pthread_mutex_unlock can be taken directly, as
70 signature and semantic are right, but without error check then!!!!,
71 we might want to change this therefore. */
74 g_mutex_trylock_posix_impl (GMutex
* mutex
)
78 result
= pthread_mutex_trylock ((pthread_mutex_t
*) mutex
);
79 #ifdef HAVE_PTHREAD_MUTEX_TRYLOCK_POSIX
82 posix_check_for_error (result
);
91 g_cond_new_posix_impl (void)
93 GCond
*result
= (GCond
*) g_new (pthread_cond_t
, 1);
94 posix_check_for_error (pthread_cond_init ((pthread_cond_t
*) result
, NULL
));
98 /* pthread_cond_signal, pthread_cond_broadcast and pthread_cond_wait
99 can be taken directly, as signature and semantic are right, but
100 without error check then!!!!, we might want to change this
103 #define G_MICROSEC 1000000
104 #define G_NANOSEC 1000000000
107 g_cond_timed_wait_posix_impl (GCond
* cond
,
108 GMutex
* entered_mutex
,
112 struct timespec end_time
;
115 g_return_val_if_fail (cond
!= NULL
, FALSE
);
116 g_return_val_if_fail (entered_mutex
!= NULL
, FALSE
);
120 g_cond_wait (cond
, entered_mutex
);
124 end_time
.tv_sec
= abs_time
->tv_sec
;
125 end_time
.tv_nsec
= abs_time
->tv_usec
* (G_NANOSEC
/ G_MICROSEC
);
126 g_assert (end_time
.tv_nsec
< G_NANOSEC
);
127 result
= pthread_cond_timedwait ((pthread_cond_t
*) cond
,
128 (pthread_mutex_t
*) entered_mutex
,
130 #ifdef HAVE_PTHREAD_COND_TIMEDWAIT_POSIX
131 timed_out
= (result
== ETIMEDOUT
);
133 timed_out
= (result
== -1 && errno
== EAGAIN
);
136 posix_check_for_error (result
);
141 g_cond_free_posix_impl (GCond
* cond
)
143 posix_check_for_error (pthread_cond_destroy ((pthread_cond_t
*) cond
));
148 g_private_new_posix_impl (GDestroyNotify destructor
)
150 GPrivate
*result
= (GPrivate
*) g_new (pthread_key_t
, 1);
151 posix_check_for_error (pthread_key_create ((pthread_key_t
*) result
,
156 /* NOTE: the functions g_private_get and g_private_set may not use
157 functions from gmem.c and gmessages.c */
160 g_private_set_posix_impl (GPrivate
* private_key
, gpointer value
)
165 pthread_setspecific (*(pthread_key_t
*) private_key
, value
);
169 g_private_get_posix_impl (GPrivate
* private_key
)
173 #ifdef HAVE_PTHREAD_GETSPECIFIC_POSIX
174 return pthread_getspecific (*(pthread_key_t
*) private_key
);
175 #else /* HAVE_PTHREAD_GETSPECIFIC_POSIX */
178 pthread_getspecific (*(pthread_key_t
*) private_key
, &data
);
181 #endif /* HAVE_PTHREAD_GETSPECIFIC_POSIX */
184 static GThreadFunctions g_thread_functions_for_glib_use_default
=
186 g_mutex_new_posix_impl
,
187 (void (*)(GMutex
*)) pthread_mutex_lock
,
188 g_mutex_trylock_posix_impl
,
189 (void (*)(GMutex
*)) pthread_mutex_unlock
,
190 g_mutex_free_posix_impl
,
191 g_cond_new_posix_impl
,
192 (void (*)(GCond
*)) pthread_cond_signal
,
193 (void (*)(GCond
*)) pthread_cond_broadcast
,
194 (void (*)(GCond
*, GMutex
*)) pthread_cond_wait
,
195 g_cond_timed_wait_posix_impl
,
196 g_cond_free_posix_impl
,
197 g_private_new_posix_impl
,
198 g_private_get_posix_impl
,
199 g_private_set_posix_impl