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Diffstat (limited to 'lib/libpthread/include/cond.h')
| -rw-r--r-- | lib/libpthread/include/cond.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/libpthread/include/cond.h b/lib/libpthread/include/cond.h new file mode 100644 index 000000000000..82c064eac028 --- /dev/null +++ b/lib/libpthread/include/cond.h @@ -0,0 +1,89 @@ +/* ==== 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. + * + * Description : mutex header. + * + * 1.00 93/10/30 proven + * -Started coding this file. + */ + +/* + * New cond structures + */ +enum pthread_cond_type { + COND_TYPE_FAST, + COND_TYPE_STATIC_FAST, + COND_TYPE_METERED, + COND_TYPE_DEBUG, /* Debug conds will have lots of options */ + COND_TYPE_MAX +}; + +typedef struct pthread_cond { + enum pthread_cond_type c_type; + struct pthread_queue c_queue; + semaphore c_lock; + void * c_data; + long c_flags; +} pthread_cond_t; + +typedef struct pthread_cond_attr { + enum pthread_cond_type 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, \ + NULL, SEMAPHORE_CLEAR, COND_FLAGS_INITED } + +/* + * New functions + */ + +__BEGIN_DECLS + +int pthread_cond_init __P((pthread_cond_t *, pthread_condattr_t *)); +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 + |