mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 20:00:19 +02:00
9bc4701cd3
(SCM_NONREC_CRITICAL_SECTION_START, SCM_NONREC_CRITICAL_SECTION_END, SCM_REC_CRITICAL_SECTION_START, SCM_REC_CRITICAL_SECTION_END): New macros. (SCM_CRITICAL_SECTION_START/END): Defined here. * eval.c: Insert SOURCE_SECTION_START / SOURCE_SECTION_END around the three calls to scm_m_expand_body. * gc.h: #include "libguile/pthread-threads.h"; (SCM_FREELIST_CREATE, SCM_FREELIST_LOC): New macros. * gc.c (scm_i_freelist, scm_i_freelist2): Defined to be of type scm_t_key; * gc.c, gc-freelist.c, inline.h: Use SCM_FREELIST_LOC for freelist access. * gc-freelist.c (scm_gc_init_freelist): Create freelist keys. * gc-freelist.c, threads.c (really_launch): Use SCM_FREELIST_CREATE. * gc-malloc.c (scm_realloc, scm_gc_register_collectable_memory): * gc.c (scm_i_expensive_validation_check, scm_gc, scm_gc_for_newcell): Put threads to sleep before doing GC-related heap administration so that those pieces of code are executed single-threaded. We might consider rewriting these code sections in terms of a "call_gc_code_singly_threaded" construct instead of calling the pair of scm_i_thread_put_to_sleep () and scm_i_thread_wake_up (). Also, we would want to have as many of these sections eleminated. * init.c (scm_init_guile_1): Call scm_threads_prehistory. * inline.h: #include "libguile/threads.h" * pthread-threads.h: Macros now conform more closely to the pthreads interface. Some of them now take a second argument. * threads.c, threads.h: Many changes. * configure.in: Temporarily replaced "copt" threads option with new option "pthreads". (USE_PTHREAD_THREADS): Define if pthreads configured.
151 lines
5.5 KiB
C
151 lines
5.5 KiB
C
/* classes: h_files */
|
||
|
||
#ifndef SCM_NULL_THREADS_H
|
||
#define SCM_NULL_THREADS_H
|
||
|
||
/* Copyright (C) 2002 Free Software Foundation, Inc.
|
||
*
|
||
* This program is free software; you can redistribute it and/or modify
|
||
* it under the terms of the GNU General Public License as published by
|
||
* the Free Software Foundation; either version 2, or (at your option)
|
||
* any later version.
|
||
*
|
||
* This program is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
* GNU General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU General Public License
|
||
* along with this software; see the file COPYING. If not, write to
|
||
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
||
* Boston, MA 02111-1307 USA
|
||
*
|
||
* As a special exception, the Free Software Foundation gives permission
|
||
* for additional uses of the text contained in its release of GUILE.
|
||
*
|
||
* The exception is that, if you link the GUILE library with other files
|
||
* to produce an executable, this does not by itself cause the
|
||
* resulting executable to be covered by the GNU General Public License.
|
||
* Your use of that executable is in no way restricted on account of
|
||
* linking the GUILE library code into it.
|
||
*
|
||
* This exception does not however invalidate any other reasons why
|
||
* the executable file might be covered by the GNU General Public License.
|
||
*
|
||
* This exception applies only to the code released by the
|
||
* Free Software Foundation under the name GUILE. If you copy
|
||
* code from other Free Software Foundation releases into a copy of
|
||
* GUILE, as the General Public License permits, the exception does
|
||
* not apply to the code that you add in this way. To avoid misleading
|
||
* anyone as to the status of such modified files, you must delete
|
||
* this exception notice from them.
|
||
*
|
||
* If you write modifications of your own for GUILE, it is your choice
|
||
* whether to permit this exception to apply to your modifications.
|
||
* If you do not wish that, delete this exception notice. */
|
||
|
||
|
||
|
||
/* The null-threads implementation. We provide the standard API, but
|
||
no new threads can be created.
|
||
*/
|
||
|
||
#error temporarily broken, compile with threads enabled (default option)
|
||
|
||
/* We can't switch so don't bother trying.
|
||
*/
|
||
#undef SCM_THREAD_SWITCHING_CODE
|
||
#define SCM_THREAD_SWITCHING_CODE
|
||
|
||
#define scm_t_thread int
|
||
|
||
/* The "(void)(...)" constructs in the expansions are there to ensure
|
||
that the side effects of the argument expressions take place.
|
||
*/
|
||
|
||
#define scm_thread_create(th,proc,data) ((void)(proc), (void)(data), ENOTSUP)
|
||
#define scm_thread_join(th) do { (void)(th); abort(); } while(0)
|
||
#define scm_thread_detach(th) do { (void)(th); abort(); } while(0)
|
||
#define scm_thread_self() 0
|
||
|
||
#define scm_t_mutex int
|
||
|
||
#define scm_mutex_init(mx) do { (void)(mx); } while(0)
|
||
#define scm_mutex_destroy(mx) do { (void)(mx); } while(0)
|
||
#define scm_mutex_lock(mx) do { (void)(mx); } while(0)
|
||
#define scm_mutex_trylock(mx) ((void)(mx), 1)
|
||
#define scm_mutex_unlock(mx) do { (void)(mx); } while(0)
|
||
|
||
#define scm_t_cond int
|
||
|
||
#define scm_cond_init(cv) do { (void)(cv); } while(0)
|
||
#define scm_cond_destroy(cv) do { (void)(cv); } while(0)
|
||
#define scm_cond_wait(cv,mx) ((void)(cv), (void)(mx), ENOTSUP)
|
||
#define scm_cond_timedwait(cv,mx,at) ((void)(cv), (void)(mx), (void)(at), \
|
||
ENOTSUP)
|
||
#define scm_cond_signal(cv) do { (void)(cv); } while(0)
|
||
#define scm_cond_broadcast(cv) do { (void)(cv); } while(0)
|
||
|
||
#define scm_thread_select select
|
||
|
||
typedef void **scm_t_key;
|
||
|
||
#define scm_key_create(keyp) do { *(keyp) = malloc(sizeof(void*)); \
|
||
} while(0)
|
||
#define scm_key_delete(key) do { free(key); } while(0)
|
||
#define scm_key_setspecific(key, value) do { *(key) = (value); } while(0)
|
||
#define scm_key_getspecific(key) *(key)
|
||
|
||
#if 0
|
||
|
||
/* These are the actual prototypes of the functions/macros defined
|
||
above. We list them here for reference. */
|
||
|
||
typedef int scm_t_thread;
|
||
|
||
SCM_API int scm_thread_create (scm_t_thread *th,
|
||
void (*proc) (void *), void *data);
|
||
SCM_API void scm_thread_join (scm_t_thread th);
|
||
SCM_API void scm_thread_detach (scm_t_thread th);
|
||
SCM_API scm_t_thread scm_thread_self (void);
|
||
|
||
typedef int scm_t_mutex;
|
||
|
||
SCM_API void scm_mutex_init (scm_t_mutex *mx);
|
||
SCM_API void scm_mutex_destroy (scm_t_mutex *mx);
|
||
SCM_API void scm_mutex_lock (scm_t_mutex *mx);
|
||
SCM_API int scm_mutex_trylock (scm_t_mutex *mx);
|
||
SCM_API void scm_mutex_unlock (scm_t_mutex *mx);
|
||
|
||
typedef int scm_t_cond;
|
||
|
||
SCM_API void scm_cond_init (scm_t_cond *cv);
|
||
SCM_API void scm_cond_destroy (scm_t_cond *cv);
|
||
SCM_API void scm_cond_wait (scm_t_cond *cv, scm_t_mutex *mx);
|
||
SCM_API int scm_cond_timedwait (scm_t_cond *cv, scm_t_mutex *mx,
|
||
struct timespec *abstime);
|
||
SCM_API void scm_cond_signal (scm_t_cond *cv);
|
||
SCM_API void scm_cond_broadcast (scm_t_cond *cv);
|
||
|
||
typedef int scm_t_key;
|
||
|
||
SCM_API void scm_key_create (scm_t_key *keyp);
|
||
SCM_API void scm_key_delete (scm_t_key key);
|
||
SCM_API void scm_key_setspecific (scm_t_key key, const void *value);
|
||
SCM_API void *scm_key_getspecific (scm_t_key key);
|
||
|
||
SCM_API int scm_thread_select (int nfds,
|
||
SELECT_TYPE *readfds,
|
||
SELECT_TYPE *writefds,
|
||
SELECT_TYPE *exceptfds,
|
||
struct timeval *timeout);
|
||
|
||
#endif
|
||
|
||
#endif /* SCM_NULL_THREADS_H */
|
||
|
||
/*
|
||
Local Variables:
|
||
c-file-style: "gnu"
|
||
End:
|
||
*/
|