mt.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1993-2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _LIBNSL_INCLUDE_MT_H
#define _LIBNSL_INCLUDE_MT_H
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Threading and mutual exclusion declarations of primitives used for
* MT operation of libnsl code.
*
* Note: These primitives are designed to achieve the effect of avoiding a
* deadlock possibility by an interface operation being called from
* a signal handler while holding a lock.
* Note: the sig_*() functions use the _sigoff() and _sigon() consolidation
* private interfaces provided by libc to defer all asynchronously
* generated signals for the duration of holding the lock. Unlike
* blocking all signals with sigprocmask() or thr_sigsetmask(),
* _sigoff() allows signals with default dispositions to exercise
* their default actions (killing the process, stopping the process).
*/
#include "mtlib.h"
#include <thread.h>
#include <pthread.h>
#include <signal.h>
#include <synch.h>
#ifdef __cplusplus
extern "C" {
#endif
extern void sig_mutex_lock(mutex_t *);
extern void sig_mutex_unlock(mutex_t *);
extern void sig_rw_rdlock(rwlock_t *);
extern void sig_rw_wrlock(rwlock_t *);
extern void sig_rw_unlock(rwlock_t *);
extern void _sigoff(void);
extern void _sigon(void);
extern int _fcntl(int, int, ...);
extern int _ioctl(int, int, ...);
extern int _sigfillset(sigset_t *);
#ifdef __cplusplus
}
#endif
#endif /* _LIBNSL_INCLUDE_MT_H */