nptl/tst-eintr2.c

   1 /* Copyright (C) 2003-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <signal.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <sys/time.h>
  26
  27 static int do_test (void);
  28
  29 #define TEST_FUNCTION do_test ()
  30 #include "../test-skeleton.c"
  31
  32 #include "eintr.c"
  33
  34
  35 static pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER;
  36 static pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER;
  37
  38
  39 static void *
  40 tf1 (void *arg)
  41 {
  42   struct timespec ts;
  43   struct timeval tv;
  44
  45   gettimeofday (&tv, NULL);
  46   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  47   ts.tv_sec += 10000;
  48
  49   /* This call must never return.  */
  50   int e = pthread_mutex_timedlock (&m1, &ts);
  51   char buf[100];
  52   printf ("tf1: mutex_timedlock returned: %s\n",
  53           strerror_r (e, buf, sizeof (buf)));
  54
  55   exit (1);
  56 }
  57
  58
  59 static void *
  60 tf2 (void *arg)
  61 {
  62   while (1)
  63     {
  64       int e = pthread_mutex_lock (&m2);
  65       if (e != 0)
  66         {
  67           puts ("tf2: mutex_lock failed");
  68           exit (1);
  69         }
  70       e = pthread_mutex_unlock (&m2);
  71       if (e != 0)
  72         {
  73           puts ("tf2: mutex_unlock failed");
  74           exit (1);
  75         }
  76       struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 };
  77       nanosleep (&ts, NULL);
  78     }
  79 }
  80
  81
  82 static int
  83 do_test (void)
  84 {
  85   if (pthread_mutex_lock (&m1) != 0)
  86     {
  87       puts ("mutex_lock failed");
  88       exit (1);
  89     }
  90
  91   setup_eintr (SIGUSR1, NULL);
  92
  93   pthread_t th;
  94   char buf[100];
  95   int e = pthread_create (&th, NULL, tf1, NULL);
  96   if (e != 0)
  97     {
  98       printf ("main: 1st pthread_create failed: %s\n",
  99               strerror_r (e, buf, sizeof (buf)));
 100       exit (1);
 101     }
 102
 103   e = pthread_create (&th, NULL, tf2, NULL);
 104   if (e != 0)
 105     {
 106       printf ("main: 2nd pthread_create failed: %s\n",
 107               strerror_r (e, buf, sizeof (buf)));
 108       exit (1);
 109     }
 110
 111   delayed_exit (3);
 112   /* This call must never return.  */
 113   e = pthread_mutex_lock (&m1);
 114   printf ("main: mutex_lock returned: %s\n",
 115           strerror_r (e, buf, sizeof (buf)));
 116
 117   return 1;
 118 }