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/* ==== cond.h ============================================================
* Copyright (c) 1993 by Chris Provenzano, proven@mit.edu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Chris Provenzano.
* 4. The name of Chris Provenzano may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
*
* Description : Condition variable header.
*
* 1.00 93/10/30 proven
* -Started coding this file.
*/
#include <timers.h>
/*
* New cond structures
*/
enum pthread_condtype {
COND_TYPE_FAST,
COND_TYPE_STATIC_FAST,
COND_TYPE_COUNTING_FAST, /* Used with MUTEX_TYPE_COUNTING_FAST */
COND_TYPE_METERED,
COND_TYPE_DEBUG, /* Debug conds will have lots of options */
COND_TYPE_MAX
};
#define PTHREAD_CONDTYPE_FAST 1
#define PTHREAD_CONDTYPE_DEBUG 4
#define PTHREAD_CONDTYPE_RECURSIVE 2
typedef struct pthread_cond {
enum pthread_condtype c_type;
struct pthread_queue c_queue;
semaphore c_lock;
void * c_data;
long c_flags;
} pthread_cond_t;
typedef struct pthread_condattr {
enum pthread_condtype c_type;
long c_flags;
} pthread_condattr_t;
/*
* Flags for conds.
*/
#define COND_FLAGS_PRIVATE 0x01
#define COND_FLAGS_INITED 0x02
#define COND_FLAGS_BUSY 0x04
/*
* Static cond initialization values.
*/
#define PTHREAD_COND_INITIALIZER \
{ COND_TYPE_STATIC_FAST, PTHREAD_QUEUE_INITIALIZER, \
SEMAPHORE_CLEAR, NULL, COND_FLAGS_INITED }
/*
* New functions
*/
__BEGIN_DECLS
struct timespec;
int pthread_cond_init __P_((pthread_cond_t *, const pthread_condattr_t *));
int pthread_cond_timedwait __P_((pthread_cond_t *, pthread_mutex_t *,
const struct timespec * abstime));
int pthread_cond_wait __P_((pthread_cond_t *, pthread_mutex_t *));
int pthread_cond_signal __P_((pthread_cond_t *));
int pthread_cond_broadcast __P_((pthread_cond_t *));
int pthread_cond_destroy __P_((pthread_cond_t *));
__END_DECLS
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