unit-tests/test-cases/dlopen-dyld-locking/base.c

   1 /*
   2  * Copyright (c) 2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 #include <pthread.h>
  24 #include <time.h>
  25 #include <errno.h>
  26 #include <stdlib.h>
  27 #include <sys/time.h>
  28
  29 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  30
  31 static pthread_mutex_t  sBarrierMutex;
  32 static pthread_cond_t   sBarrierFree;
  33
  34 static volatile int sValue = 0;
  35
  36 static void __attribute__((constructor)) myinit()
  37 {
  38         pthread_mutex_init(&sBarrierMutex, NULL);
  39         pthread_cond_init(&sBarrierFree, NULL);
  40 }
  41
  42 void waitForState(int value)
  43 {
  44         //fprintf(stderr, "waitForState(%d), currently %d\n", value, sValue);
  45         pthread_mutex_lock(&sBarrierMutex);
  46         while ( sValue < value ) {
  47                 struct timeval        tvNow;
  48                 struct timespec       tsTimeout;
  49                 gettimeofday(&tvNow, NULL);
  50                 TIMEVAL_TO_TIMESPEC(&tvNow, &tsTimeout);
  51                 tsTimeout.tv_sec += 2;    // fail if block for 2 seconds
  52                 if ( pthread_cond_timedwait(&sBarrierFree, &sBarrierMutex, &tsTimeout) == ETIMEDOUT ) {
  53                         FAIL("dlopen-dyld-locking: lock timed out");
  54                         exit(0);
  55                 }
  56         }
  57         pthread_mutex_unlock(&sBarrierMutex);
  58 }
  59
  60
  61 void setState(int value)
  62 {
  63         pthread_mutex_lock(&sBarrierMutex);
  64         //fprintf(stderr, "setState(%d)\n", value);
  65         sValue = value;
  66         pthread_cond_broadcast(&sBarrierFree);
  67         pthread_mutex_unlock(&sBarrierMutex);
  68 }
  69
  70