-/* classes: h_files */
-
-#ifndef SCM_NULL_DEFS_H
-#define SCM_NULL_DEFS_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. */
-
-\f
-
-/* The null-threads implementation. We provide the standard API, but
- no new threads can be created.
-*/
-
-#define SCM_CRITICAL_SECTION_START
-#define SCM_CRITICAL_SECTION_END
-#define SCM_THREAD_SWITCHING_CODE
-
-typedef struct scm_null_mutex {
- int locked;
-} scm_null_mutex;
-
-SCM_API int scm_null_mutex_init (scm_null_mutex *);
-SCM_API int scm_null_mutex_lock (scm_null_mutex *);
-SCM_API int scm_null_mutex_unlock (scm_null_mutex *);
-SCM_API int scm_null_mutex_destroy (scm_null_mutex *);
-
-typedef scm_null_mutex scm_t_mutex;
-#define scm_mutex_init scm_null_mutex_init
-#define scm_mutex_lock scm_null_mutex_lock
-#define scm_mutex_unlock scm_null_mutex_unlock
-
-typedef struct scm_null_condvar {
- int signalled;
-} scm_null_condvar;
-
-SCM_API int scm_null_condvar_init (scm_null_condvar *);
-SCM_API int scm_null_condvar_wait (scm_null_condvar *, scm_null_mutex *);
-SCM_API int scm_null_condvar_signal (scm_null_condvar *);
-SCM_API int scm_null_condvar_destroy (scm_null_condvar *);
-
-typedef scm_null_condvar scm_t_condvar;
-#define scm_cond_init scm_null_condvar_init
-#define scm_cond_wait scm_null_condvar_wait
-#define scm_cond_signal scm_null_condvar_signal
-#define scm_cond_broadcast scm_null_condvar_signal /* yes */
-#define scm_cond_destroy scm_null_condvar_destroy
-
-SCM_API void *scm_null_threads_data;
-
-#define SCM_THREAD_LOCAL_DATA (scm_null_threads_data)
-#define SCM_SET_THREAD_LOCAL_DATA(ptr) (scm_null_threads_data = (ptr))
-
-#endif /* SCM_NULL_DEFS_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 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 <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(0)
+#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