libguile/threads.h

   1 /* classes: h_files */
   2
   3 #ifndef THREADSH
   4 #define THREADSH
   5
   6 /*      Copyright (C) 1996, 1997, 1998 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 \f
  47
  48 #include "libguile/__scm.h"
  49 #include "libguile/procs.h"
  50
  51 /* smob tags for the thread datatypes */
  52 extern long scm_tc16_thread;
  53 extern long scm_tc16_mutex;
  54 extern long scm_tc16_condvar;
  55
  56 #define SCM_THREADP(obj) (scm_tc16_thread == SCM_TYP16 (obj))
  57 #define SCM_THREAD_DATA(obj) ((void *) SCM_CDR (obj))
  58
  59 #define SCM_MUTEXP(obj) (scm_tc16_mutex == SCM_TYP16 (obj))
  60 #define SCM_MUTEX_DATA(obj) ((void *) SCM_CDR (obj))
  61
  62 #define SCM_CONDVARP(obj) (scm_tc16_condvar == SCM_TYP16 (obj))
  63 #define SCM_CONDVAR_DATA(obj) ((void *) SCM_CDR (obj))
  64
  65 /* Initialize implementation specific details of the threads support */
  66 void scm_threads_init SCM_P ((SCM_STACKITEM *));
  67 void scm_threads_mark_stacks SCM_P ((void));
  68 void scm_init_threads SCM_P ((SCM_STACKITEM *));
  69
  70 /* */
  71 SCM scm_threads_make_mutex SCM_P ((void));
  72 SCM scm_threads_lock_mutex SCM_P ((SCM));
  73 SCM scm_threads_unlock_mutex SCM_P ((SCM));
  74 SCM scm_threads_monitor SCM_P ((void));
  75
  76 SCM scm_spawn_thread (scm_catch_body_t body, void *body_data,
  77                       scm_catch_handler_t handler, void *handler_data);
  78
  79 /* The C versions of the Scheme-visible thread functions.  */
  80 #ifdef USE_COOP_THREADS
  81 extern SCM scm_single_thread_p (void);
  82 #endif
  83 extern SCM scm_yield (void);
  84 extern SCM scm_call_with_new_thread (SCM argl);
  85 extern SCM scm_join_thread (SCM t);
  86 extern SCM scm_make_mutex (void);
  87 extern SCM scm_lock_mutex (SCM m);
  88 extern SCM scm_unlock_mutex (SCM m);
  89 extern SCM scm_make_condition_variable (void);
  90 extern SCM scm_wait_condition_variable (SCM cond, SCM mutex);
  91 extern SCM scm_signal_condition_variable (SCM cond);
  92
  93 #if 0
  94 /* These don't work any more.  */
  95 #ifdef USE_MIT_PTHREADS
  96 #include "mit-pthreads.h"
  97 #endif
  98
  99 #ifdef USE_FSU_PTHREADS
 100 #include "fsu-pthreads.h"
 101 #endif
 102 #endif
 103
 104 #ifdef USE_COOP_THREADS
 105 #include "libguile/coop-defs.h"
 106 #endif
 107
 108 #endif  /* THREADSH */