Annotation of prex-old/usr/test/mutex/mutex.c, Revision 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: * mutex.c - test priority inheritence of mutex.
! 32: */
! 33:
! 34: #include <prex/prex.h>
! 35: #include <stdio.h>
! 36:
! 37: static mutex_t mtx_A = MUTEX_INITIALIZER;
! 38: static mutex_t mtx_B, mtx_C;
! 39:
! 40: int
! 41: main(int argc, char *argv[])
! 42: {
! 43: int err;
! 44:
! 45: printf("Mutex test program\n");
! 46:
! 47: /*
! 48: * Initialize only B
! 49: */
! 50: mutex_init(&mtx_B);
! 51:
! 52: /*
! 53: * Lock test
! 54: */
! 55: err = mutex_lock(&mtx_A);
! 56: printf("1) Lock mutex A: err=%d\n", err);
! 57:
! 58: err = mutex_lock(&mtx_B);
! 59: printf("2) Lock mutex B: err=%d\n", err);
! 60:
! 61: /* Error: Mutex C is not initialized. */
! 62: err = mutex_lock(&mtx_C);
! 63: printf("3e) Lock mutex C: err=%d\n", err);
! 64:
! 65: /*
! 66: * Unlock test
! 67: */
! 68: err = mutex_unlock(&mtx_A);
! 69: printf("4) Unlock mutex A: err=%d\n", err);
! 70:
! 71: err = mutex_unlock(&mtx_B);
! 72: printf("5) Unlock mutex B: err=%d\n", err);
! 73:
! 74: /* Error: Mutex C is not initialized. */
! 75: err = mutex_unlock(&mtx_C);
! 76: printf("6e) Unlock mutex B: err=%d\n", err);
! 77:
! 78: /* Error: B is not locked. */
! 79: err = mutex_unlock(&mtx_B);
! 80: printf("7e) Unlock mutex B: err=%d\n", err);
! 81:
! 82: /*
! 83: * Destoroy mutex.
! 84: */
! 85: mutex_destroy(&mtx_B);
! 86:
! 87: /* Error: Mutex B is destoroyed. */
! 88: err = mutex_lock(&mtx_B);
! 89: printf("8e) Lock mutex B: err=%d\n", err);
! 90:
! 91: /*
! 92: * Double lock test
! 93: */
! 94: err = mutex_lock(&mtx_A);
! 95: printf("9) Lock mutex A: err=%d\n", err);
! 96:
! 97: /* Erorr: Mutex A is already locked */
! 98: err = mutex_lock(&mtx_A);
! 99: printf("10e) Lock mutex A: err=%d\n", err);
! 100:
! 101: err = mutex_unlock(&mtx_A);
! 102: printf("11) Unlock mutex A: err=%d\n", err);
! 103:
! 104: return 0;
! 105: }
CVSweb