libguile/threads-plugin.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_THREADS_PLUGIN_H
   4 #define SCM_THREADS_PLUGIN_H
   5
   6 /* Copyright (C) 1996,1997,1998,2000,2001, 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 #include <pthread.h> /* This file should *not* need to include pthread.h */
  49
  50 /* Size is checked in scm_init_threads_plugin */
  51 #define SCM_MUTEX_MAXSIZE (9 * sizeof (long))
  52 typedef struct { char _[SCM_MUTEX_MAXSIZE]; } scm_t_mutex;
  53
  54 /*fixme* Should be defined similarly to scm_t_mutex. */
  55 #define scm_t_mutexattr pthread_mutexattr_t
  56
  57 extern int scm_i_plugin_mutex_size;
  58 typedef int (*scm_t_mutex_init) (scm_t_mutex *, const scm_t_mutexattr *);
  59 typedef int (*scm_t_mutex_lock) (scm_t_mutex *);
  60 typedef int (*scm_t_mutex_unlock) (scm_t_mutex *);
  61 extern scm_t_mutex_init scm_i_plugin_mutex_init;
  62 extern scm_t_mutex_lock scm_i_plugin_mutex_lock;
  63 extern scm_t_mutex_unlock scm_i_plugin_mutex_unlock;
  64
  65 /* Size is checked in scm_init_threads_plugin */
  66 #define SCM_REC_MUTEX_MAXSIZE (SCM_MUTEX_MAXSIZE + 3 * sizeof (long))
  67 typedef struct { char _[SCM_REC_MUTEX_MAXSIZE]; } scm_t_rec_mutex;
  68
  69 extern int scm_i_plugin_rec_mutex_size;
  70 typedef int (*scm_t_rec_mutex_init) (scm_t_rec_mutex *,
  71                                            const scm_t_mutexattr *);
  72 typedef int (*scm_t_rec_mutex_destroy) (scm_t_rec_mutex *);
  73 typedef int (*scm_t_rec_mutex_lock) (scm_t_rec_mutex *);
  74 typedef int (*scm_t_rec_mutex_trylock) (scm_t_rec_mutex *);
  75 typedef int (*scm_t_rec_mutex_unlock) (scm_t_rec_mutex *);
  76 extern scm_t_rec_mutex_init scm_i_plugin_rec_mutex_init;
  77 extern scm_t_rec_mutex_destroy scm_i_plugin_rec_mutex_destroy;
  78 extern scm_t_rec_mutex_lock scm_i_plugin_rec_mutex_lock;
  79 extern scm_t_rec_mutex_trylock scm_i_plugin_rec_mutex_trylock;
  80 extern scm_t_rec_mutex_unlock scm_i_plugin_rec_mutex_unlock;
  81
  82 /*fixme*/
  83 #define scm_t_cond                      pthread_cond_t
  84
  85 typedef int (*scm_t_cond_wait) (scm_t_cond *, scm_t_mutex *);
  86 typedef int (*scm_t_cond_timedwait) (scm_t_cond *,
  87                                      scm_t_mutex *,
  88                                      const struct timespec *);
  89 extern scm_t_cond_wait scm_i_plugin_cond_wait;
  90 extern scm_t_cond_timedwait scm_i_plugin_cond_timedwait;
  91
  92 extern void scm_init_threads_plugin (void);
  93
  94 #endif  /* SCM_THREADS_PLUGIN_H */
  95
  96 /*
  97   Local Variables:
  98   c-file-style: "gnu"
  99   End:
 100 */