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e29e0b0963
thread_admin_mutex in order not to risk being joined. (scm_i_thread_put_to_sleep, scm_i_thread_wake_up): Keep thread_admin_mutex locked during GC. * pthread-threads.c, pthread-threads.h: Improvements to debugging functions.
163 lines
6 KiB
C
163 lines
6 KiB
C
/* classes: h_files */
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#ifndef SCM_THREADS_PTHREADS_H
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#define SCM_THREADS_PTHREADS_H
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/* Copyright (C) 2002 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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/* The pthreads-threads implementation. This is a direct mapping.
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*/
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/* This is an interface between Guile and the pthreads thread package. */
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#include <pthread.h>
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#include <sched.h>
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/* MDJ 021209 <djurfeldt@nada.kth.se>:
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The separation of the plugin interface and the low-level C API
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(currently in threads.h) needs to be completed in a sensible way.
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*/
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/* The scm_t_ types are temporarily used both in plugin and low-level API */
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#define scm_t_thread pthread_t
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#define scm_i_plugin_thread_create pthread_create
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#define scm_i_plugin_thread_join pthread_join
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#define scm_i_plugin_thread_detach pthread_detach
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#define scm_i_plugin_thread_self pthread_self
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#define scm_i_plugin_thread_yield sched_yield
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/* Size is checked in scm_init_pthread_threads */
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#define SCM_MUTEX_MAXSIZE (9 * sizeof (long))
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typedef struct { char _[SCM_MUTEX_MAXSIZE]; } scm_t_mutex;
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#define scm_t_mutexattr pthread_mutexattr_t
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extern scm_t_mutexattr scm_i_plugin_mutex; /* The "fast" mutex. */
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/* This debug stuff made things a bit messy. This needs some
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reorganization. */
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#ifdef SCM_DEBUG_THREADS
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int scm_i_plugin_mutex_init (scm_t_mutex *, const scm_t_mutexattr *);
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int scm_i_plugin_mutex_lock (scm_t_mutex *);
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int scm_i_plugin_mutex_unlock (scm_t_mutex *);
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#else
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#define scm_i_plugin_mutex_init(m,a) \
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pthread_mutex_init ((pthread_mutex_t *) (m), (a))
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#define scm_i_plugin_mutex_lock(m) \
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pthread_mutex_lock ((pthread_mutex_t *) (m))
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#define scm_i_plugin_mutex_unlock(m) \
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pthread_mutex_unlock ((pthread_mutex_t *) (m))
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#endif
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#define scm_i_plugin_mutex_destroy(m) \
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pthread_mutex_destroy ((pthread_mutex_t *) (m))
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#define scm_i_plugin_mutex_trylock(m) \
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pthread_mutex_trylock ((pthread_mutex_t *) (m))
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/* Size is checked in scm_init_pthread_threads */
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#define SCM_REC_MUTEX_MAXSIZE (SCM_MUTEX_MAXSIZE + 3 * sizeof (long))
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typedef struct { char _[SCM_REC_MUTEX_MAXSIZE]; } scm_t_rec_mutex;
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extern scm_t_mutexattr scm_i_plugin_rec_mutex;
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#if defined (SCM_MUTEX_RECURSIVE) && !defined (SCM_DEBUG_THREADS)
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/* pthreads has recursive mutexes! */
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#define scm_i_plugin_rec_mutex_init(m,a) \
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pthread_mutex_init ((pthread_mutex_t *) (m), (a))
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#define scm_i_plugin_rec_mutex_destroy(m) \
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pthread_mutex_destroy ((pthread_mutex_t *) (m))
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#define scm_i_plugin_rec_mutex_lock(m) \
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pthread_mutex_lock ((pthread_mutex_t *) (m))
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#define scm_i_plugin_rec_mutex_trylock(m) \
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pthread_mutex_trylock ((pthread_mutex_t *) (m))
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#define scm_i_plugin_rec_mutex_unlock(m) \
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pthread_mutex_unlock ((pthread_mutex_t *) (m))
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#else
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int scm_i_plugin_rec_mutex_init (scm_t_rec_mutex *, const scm_t_mutexattr *);
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#define scm_i_plugin_rec_mutex_destroy(mx) do { (void) (mx); } while (0)
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int scm_i_plugin_rec_mutex_lock (scm_t_rec_mutex *);
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int scm_i_plugin_rec_mutex_trylock (scm_t_rec_mutex *);
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int scm_i_plugin_rec_mutex_unlock (scm_t_rec_mutex *);
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#endif
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#define scm_t_cond pthread_cond_t
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#define scm_i_plugin_cond_init pthread_cond_init
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#define scm_i_plugin_cond_destroy pthread_cond_destroy
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#ifdef SCM_DEBUG_THREADS
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int scm_i_plugin_cond_wait (scm_t_cond *, scm_t_mutex *);
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int scm_i_plugin_cond_timedwait (scm_t_cond *,
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scm_t_mutex *,
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const struct timespec *);
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#else
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#define scm_i_plugin_cond_wait(c, m) \
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pthread_cond_wait ((c), (pthread_mutex_t *) (m))
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#define scm_i_plugin_cond_timedwait(c, m, t) \
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pthread_cond_timedwait ((c), (pthread_mutex_t *) (m), (t))
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#endif
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#define scm_i_plugin_cond_signal pthread_cond_signal
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#define scm_i_plugin_cond_broadcast pthread_cond_broadcast
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#define scm_t_key pthread_key_t
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#define scm_i_plugin_key_create pthread_key_create
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#define scm_i_plugin_key_delete pthread_key_delete
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#define scm_i_plugin_setspecific pthread_setspecific
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#define scm_i_plugin_getspecific pthread_getspecific
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#define scm_i_plugin_select select
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#ifdef SCM_DEBUG_THREADS
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void scm_i_assert_heap_locked (void);
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#endif
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void scm_init_pthread_threads (void);
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#endif /* SCM_THREADS_PTHREADS_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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