mt.h revision 2
2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A#ifndef _LIBNSL_INCLUDE_MT_H
2N/A#define _LIBNSL_INCLUDE_MT_H
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A/*
2N/A * Threading and mutual exclusion declarations of primitives used for
2N/A * MT operation of libnsl code.
2N/A *
2N/A * Note: These primitives are designed to achieve the effect of avoiding a
2N/A * deadlock possibility by an interface operation being called from
2N/A * a signal handler while holding a lock.
2N/A * Note: the sig_*() functions use the _sigoff() and _sigon() consolidation
2N/A * private interfaces provided by libc to defer all asynchronously
2N/A * generated signals for the duration of holding the lock. Unlike
2N/A * blocking all signals with sigprocmask() or thr_sigsetmask(),
2N/A * _sigoff() allows signals with default dispositions to exercise
2N/A * their default actions (killing the process, stopping the process).
2N/A */
2N/A
2N/A#include <thread.h>
2N/A#include <pthread.h>
2N/A#include <signal.h>
2N/A#include <synch.h>
2N/A
2N/A#ifdef __cplusplus
2N/Aextern "C" {
2N/A#endif
2N/A
2N/Aextern sigset_t fillset; /* for actually blocking all signals */
2N/A
2N/Aextern void sig_mutex_lock(mutex_t *);
2N/Aextern void sig_mutex_unlock(mutex_t *);
2N/Aextern void sig_rw_rdlock(rwlock_t *);
2N/Aextern void sig_rw_wrlock(rwlock_t *);
2N/Aextern void sig_rw_unlock(rwlock_t *);
2N/A
2N/Aextern void _sigoff(void);
2N/Aextern void _sigon(void);
2N/A
2N/Aextern void *thr_get_storage(pthread_key_t *, size_t, void(*)(void *));
2N/A
2N/A#ifdef __cplusplus
2N/A}
2N/A#endif
2N/A
2N/A#endif /* _LIBNSL_INCLUDE_MT_H */