cond.h
上传用户:tsgydb
上传日期:2007-04-14
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文件大小:3k
- /* ==== 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
-