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