Return to sem.c CVS log

Up to [local] / prex-old / usr / test / sem

Annotation of prex-old/usr/test/sem/sem.c, Revision 1.1.1.1

1.1       nbrk        1: /*-
                      2:  * Copyright (c) 2005, Kohsuke Ohtani
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the author nor the names of any co-contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: /*
                     31:  * sem.c - test program for semaphore.
                     32:  */
                     33:
                     34: #include <prex/prex.h>
                     35: #include <stdio.h>
                     36:
                     37: int
                     38: main(int argc, char *argv[])
                     39: {
                     40:        sem_t sem;
                     41:        int err;
                     42:        u_int val;
                     43:
                     44:        printf("Semaphore test program\n");
                     45:
                     46:        /*
                     47:         * Test initialize
                     48:         */
                     49:        sem_init(&sem, 3);
                     50:
                     51:        /*
                     52:         * Test wait
                     53:         */
                     54:        err = sem_getvalue(&sem, &val);
                     55:        printf("Semaphore value=%d\n", val);
                     56:
                     57:        printf("1) Wait semahore\n");
                     58:        err = sem_wait(&sem, 0);
                     59:        if (err)
                     60:                panic("wait err");
                     61:
                     62:        err = sem_getvalue(&sem, &val);
                     63:        printf("Semaphore value=%d\n", val);
                     64:
                     65:        printf("2) Wait semahore\n");
                     66:        err = sem_wait(&sem, 0);
                     67:        if (err)
                     68:                panic("wait err");
                     69:
                     70:        err = sem_getvalue(&sem, &val);
                     71:        printf("Semaphore value=%d\n", val);
                     72:
                     73:        printf("3) Wait semahore\n");
                     74:        err = sem_wait(&sem, 0);
                     75:        if (err)
                     76:                panic("wait err");
                     77:
                     78:        err = sem_getvalue(&sem, &val);
                     79:        printf("Semaphore value=%d\n", val);
                     80:
                     81: #if 0
                     82:        /*
                     83:         * Sleep by wait
                     84:         */
                     85:        printf("4) Wait semahore\n");
                     86:        err = sem_wait(&sem, 0);
                     87:        if (err)
                     88:                panic("wait err");
                     89: #endif
                     90:        /*
                     91:         * trywait must be error.
                     92:         */
                     93:        printf("4e) Try to wait semahore\n");
                     94:        err = sem_trywait(&sem);
                     95:        printf("Try wait err=%d\n", err);
                     96:
                     97:        /*
                     98:         * Test post
                     99:         */
                    100:        printf("5) Post semahore\n");
                    101:        err = sem_post(&sem);
                    102:        if (err)
                    103:                panic("post err");
                    104:        err = sem_getvalue(&sem, &val);
                    105:        printf("Semaphore value=%d\n", val);
                    106:
                    107:        printf("Test complete\n");
                    108:        return 0;
                    109: }