* pthread-threads.c, pthread-threads.h, threads.c: Fixes to
[bpt/guile.git] / libguile / pthread-threads.h
1 /* classes: h_files */
2
3 #ifndef SCM_THREADS_PTHREADS_H
4 #define SCM_THREADS_PTHREADS_H
5
6 /* Copyright (C) 2002 Free Software Foundation, Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this software; see the file COPYING. If not, write to
20 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
21 * Boston, MA 02111-1307 USA
22 *
23 * As a special exception, the Free Software Foundation gives permission
24 * for additional uses of the text contained in its release of GUILE.
25 *
26 * The exception is that, if you link the GUILE library with other files
27 * to produce an executable, this does not by itself cause the
28 * resulting executable to be covered by the GNU General Public License.
29 * Your use of that executable is in no way restricted on account of
30 * linking the GUILE library code into it.
31 *
32 * This exception does not however invalidate any other reasons why
33 * the executable file might be covered by the GNU General Public License.
34 *
35 * This exception applies only to the code released by the
36 * Free Software Foundation under the name GUILE. If you copy
37 * code from other Free Software Foundation releases into a copy of
38 * GUILE, as the General Public License permits, the exception does
39 * not apply to the code that you add in this way. To avoid misleading
40 * anyone as to the status of such modified files, you must delete
41 * this exception notice from them.
42 *
43 * If you write modifications of your own for GUILE, it is your choice
44 * whether to permit this exception to apply to your modifications.
45 * If you do not wish that, delete this exception notice. */
46
47 \f
48
49 /* The pthreads-threads implementation. This is a direct mapping.
50 */
51
52 /* This is an interface between Guile and the pthreads thread package. */
53
54 #include <pthread.h>
55
56 /* MDJ 021209 <djurfeldt@nada.kth.se>:
57 The separation of the plugin interface and the low-level C API
58 (currently in threads.h) needs to be completed in a sensible way.
59 */
60
61 /* The scm_t_ types are temporarily used both in plugin and low-level API */
62 #define scm_t_thread pthread_t
63
64 #define scm_i_plugin_thread_create pthread_create
65
66 #define scm_i_plugin_thread_join pthread_join
67 #define scm_i_plugin_thread_detach pthread_detach
68 #define scm_i_plugin_thread_self pthread_self
69
70 #define scm_t_mutex pthread_mutex_t
71 #define scm_t_mutexattr pthread_mutexattr_t
72
73 extern scm_t_mutexattr scm_i_plugin_mutex; /* The "fast" mutex. */
74
75 #define scm_i_plugin_mutex_init pthread_mutex_init
76 #define scm_i_plugin_mutex_destroy pthread_mutex_destroy
77 #define scm_i_plugin_mutex_lock pthread_mutex_lock
78 #define scm_i_plugin_mutex_trylock pthread_mutex_trylock
79 #define scm_i_plugin_mutex_unlock pthread_mutex_unlock
80
81 /* Size is checked in scm_init_pthread_threads */
82 #define SCM_REC_MUTEX_MAXSIZE (8 * sizeof (long))
83 typedef struct { char _[SCM_REC_MUTEX_MAXSIZE]; } scm_t_rec_mutex;
84
85 extern scm_t_mutexattr scm_i_plugin_rec_mutex;
86
87 #ifdef SCM_MUTEX_RECURSIVE /* pthreads has recursive mutexes! */
88 #define scm_i_plugin_rec_mutex_init(m,a) \
89 pthread_mutex_init ((pthread_mutex_t *) (m), (a))
90 #define scm_i_plugin_rec_mutex_destroy(m) \
91 pthread_mutex_destroy ((pthread_mutex_t *) (m))
92 #define scm_i_plugin_rec_mutex_lock(m) \
93 pthread_mutex_lock ((pthread_mutex_t *) (m))
94 #define scm_i_plugin_rec_mutex_trylock(m) \
95 pthread_mutex_trylock ((pthread_mutex_t *) (m))
96 #define scm_i_plugin_rec_mutex_unlock(m) \
97 pthread_mutex_unlock ((pthread_mutex_t *) (m))
98 #else
99 int scm_i_plugin_rec_mutex_init (scm_t_rec_mutex *, const scm_t_mutexattr *);
100 #define scm_i_plugin_rec_mutex_destroy(mx) do { (void) (mx); } while (0)
101 int scm_i_plugin_rec_mutex_lock (scm_t_rec_mutex *);
102 int scm_i_plugin_rec_mutex_trylock (scm_t_rec_mutex *);
103 int scm_i_plugin_rec_mutex_unlock (scm_t_rec_mutex *);
104 #endif
105
106 #define scm_t_cond pthread_cond_t
107
108 #define scm_i_plugin_cond_init pthread_cond_init
109 #define scm_i_plugin_cond_destroy pthread_cond_destroy
110 #define scm_i_plugin_cond_wait pthread_cond_wait
111 #define scm_i_plugin_cond_timedwait pthread_cond_timedwait
112 #define scm_i_plugin_cond_signal pthread_cond_signal
113 #define scm_i_plugin_cond_broadcast pthread_cond_broadcast
114
115 #define scm_t_key pthread_key_t
116
117 #define scm_i_plugin_key_create pthread_key_create
118 #define scm_i_plugin_key_delete pthread_key_delete
119 #define scm_i_plugin_setspecific pthread_setspecific
120 #define scm_i_plugin_getspecific pthread_getspecific
121
122 #define scm_i_plugin_select select
123
124 void scm_init_pthread_threads (void);
125
126 #endif /* SCM_THREADS_PTHREADS_H */
127
128 /*
129 Local Variables:
130 c-file-style: "gnu"
131 End:
132 */