-/* classes: h_files */
-
-#ifndef SCM_NULL_THREADS_H
-#define SCM_NULL_THREADS_H
-
-/* Copyright (C) 2002 Free Software Foundation, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-\f
-
-/* 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,
- scm_t_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:
-*/
+/* classes: h_files */
+
+#ifndef SCM_NULL_THREADS_H
+#define SCM_NULL_THREADS_H
+
+/* Copyright (C) 2005, 2006, 2010 Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+\f
+
+/* The null-threads implementation. We provide the subset of the
+ standard pthread API that is used by Guile, but no new threads can
+ be created.
+
+ This file merely exits so that Guile can be compiled and run
+ without using pthreads. Improving performance via optimizations
+ that are possible in a single-threaded program is not a primary
+ goal.
+*/
+
+#include <stdlib.h>
+#include <errno.h>
+
+/* Threads
+*/
+#define scm_i_pthread_t int
+#define scm_i_pthread_self() 0
+#define scm_i_pthread_create(t,a,f,d) (*(t)=0, (void)(f), ENOSYS)
+#define scm_i_pthread_detach(t) do { } while (0)
+#define scm_i_pthread_exit(v) exit (EXIT_SUCCESS)
+#define scm_i_pthread_cancel(t) 0
+#define scm_i_pthread_cleanup_push(t,v) 0
+#define scm_i_pthread_cleanup_pop(e) 0
+#define scm_i_sched_yield() 0
+
+/* Signals
+ */
+#define scm_i_pthread_sigmask sigprocmask
+
+/* Mutexes
+ */
+#define SCM_I_PTHREAD_MUTEX_INITIALIZER 0
+#define scm_i_pthread_mutex_t int
+#define scm_i_pthread_mutex_init(m,a) (*(m) = 0)
+#define scm_i_pthread_mutex_destroy(m) do { (void)(m); } while(0)
+#define scm_i_pthread_mutex_trylock(m) ((*(m))++)
+#define scm_i_pthread_mutex_lock(m) ((*(m))++)
+#define scm_i_pthread_mutex_unlock(m) ((*(m))--)
+#define scm_i_pthread_mutexattr_recursive 0
+
+/* Condition variables
+ */
+#define SCM_I_PTHREAD_COND_INITIALIZER 0
+#define scm_i_pthread_cond_t int
+#define scm_i_pthread_cond_init(c,a) (*(c) = 0)
+#define scm_i_pthread_cond_destroy(c) do { (void)(c); } while(0)
+#define scm_i_pthread_cond_signal(c) (*(c) = 1)
+#define scm_i_pthread_cond_broadcast(c) (*(c) = 1)
+#define scm_i_pthread_cond_wait(c,m) (abort(), 0)
+#define scm_i_pthread_cond_timedwait(c,m,t) (abort(), 0)
+
+/* Onces
+ */
+#define scm_i_pthread_once_t int
+#define SCM_I_PTHREAD_ONCE_INIT 0
+#define scm_i_pthread_once(o,f) do { \
+ if(!*(o)) { *(o)=1; f (); } \
+ } while(0)
+
+/* Thread specific storage
+ */
+typedef struct scm_i_pthread_key_t {
+ struct scm_i_pthread_key_t *next;
+ void *value;
+ void (*destr_func) (void *);
+} scm_i_pthread_key_t;
+
+SCM_API int scm_i_pthread_key_create (scm_i_pthread_key_t *key,
+ void (*destr_func) (void *));
+#define scm_i_pthread_setspecific(k,p) ((k).value = (p))
+#define scm_i_pthread_getspecific(k) ((k).value)
+
+/* Convenience functions
+ */
+#define scm_i_scm_pthread_mutex_lock scm_i_pthread_mutex_lock
+#define scm_i_dynwind_pthread_mutex_lock scm_i_pthread_mutex_lock
+#define scm_i_scm_pthread_cond_wait scm_i_pthread_cond_wait
+#define scm_i_scm_pthread_cond_timedwait scm_i_pthread_cond_timedwait
+
+
+#endif /* SCM_NULL_THREADS_H */
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff