/* 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. */ /* 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: */