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Diffstat (limited to 'lib/libpthread/include/pthread/prio_queue.h')
-rwxr-xr-x | lib/libpthread/include/pthread/prio_queue.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/lib/libpthread/include/pthread/prio_queue.h b/lib/libpthread/include/pthread/prio_queue.h new file mode 100755 index 00000000000..d9c84ad25ed --- /dev/null +++ b/lib/libpthread/include/pthread/prio_queue.h @@ -0,0 +1,78 @@ +/* ==== priority.h ========================================================== + * Copyright (c) 1994 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: prio_queue.h,v 1.1 1998/07/21 13:19:12 peter Exp $ + * + * Description : Priority functions. + * + * 1.00 94/09/19 proven + * -Started coding this file. + */ + +#ifndef _PTHREAD_PRIO_QUEUE_H_ +#define _PTHREAD_PRIO_QUEUE_H_ + +/* + * Static queue initialization values. + */ +#define PTHREAD_DEFAULT_PRIORITY 64 +#define PTHREAD_MAX_PRIORITY 126 +#define PTHREAD_MIN_PRIORITY 0 + +/* + * New prio_queue structures + */ +struct pthread_prio_level { + struct pthread * first; + struct pthread * last; +}; + +struct pthread_prio_queue { + void * data; + struct pthread * next; + struct pthread_prio_level level[PTHREAD_MAX_PRIORITY + 1]; +}; + +/* + * New functions + */ + +__BEGIN_DECLS + +void pthread_prio_queue_init __P_((struct pthread_prio_queue *)); +void pthread_prio_queue_enq __P_((struct pthread_prio_queue *, + struct pthread *)); +struct pthread *pthread_prio_queue_deq + __P_((struct pthread_prio_queue *)); + +__END_DECLS + +#endif |