nptl/tst-cancel18.c

   1 /* Copyright (C) 2003-2020 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <time.h>
  24 #include <unistd.h>
  25
  26
  27 static pthread_barrier_t b;
  28
  29
  30 /* Cleanup handling test.  */
  31 static int cl_called;
  32
  33 static void
  34 cl (void *arg)
  35 {
  36   ++cl_called;
  37 }
  38
  39
  40 static void *
  41 tf (void *arg)
  42 {
  43   int r = pthread_barrier_wait (&b);
  44   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  45     {
  46       puts ("barrier_wait failed");
  47       exit (1);
  48     }
  49
  50   pthread_cleanup_push (cl, NULL);
  51
  52   struct timespec ts = { .tv_sec = arg == NULL ? 10000000 : 0, .tv_nsec = 0 };
  53   TEMP_FAILURE_RETRY (clock_nanosleep (CLOCK_REALTIME, 0, &ts, &ts));
  54
  55   pthread_cleanup_pop (0);
  56
  57   puts ("clock_nanosleep returned");
  58
  59   exit (1);
  60 }
  61
  62
  63 static int
  64 do_test (void)
  65 {
  66   if (pthread_barrier_init (&b, NULL, 2) != 0)
  67     {
  68       puts ("barrier_init failed");
  69       return 1;
  70     }
  71
  72   pthread_t th;
  73   if (pthread_create (&th, NULL, tf, NULL) != 0)
  74     {
  75       puts ("1st create failed");
  76       return 1;
  77     }
  78
  79   int r = pthread_barrier_wait (&b);
  80   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  81     {
  82       puts ("barrier_wait failed");
  83       exit (1);
  84     }
  85
  86   struct timespec  ts = { .tv_sec = 0, .tv_nsec = 100000000 };
  87   while (nanosleep (&ts, &ts) != 0)
  88     continue;
  89
  90   puts ("going to cancel in-time");
  91   if (pthread_cancel (th) != 0)
  92     {
  93       puts ("1st cancel failed");
  94       return 1;
  95     }
  96
  97   void *status;
  98   if (pthread_join (th, &status) != 0)
  99     {
 100       puts ("1st join failed");
 101       return 1;
 102     }
 103   if (status != PTHREAD_CANCELED)
 104     {
 105       puts ("1st thread not canceled");
 106       return 1;
 107     }
 108
 109   if (cl_called == 0)
 110     {
 111       puts ("cleanup handler not called");
 112       return 1;
 113     }
 114   if (cl_called > 1)
 115     {
 116       puts ("cleanup handler called more than once");
 117       return 1;
 118     }
 119
 120   puts ("in-time cancellation succeeded");
 121
 122
 123   cl_called = 0;
 124
 125   if (pthread_create (&th, NULL, tf, NULL) != 0)
 126     {
 127       puts ("2nd create failed");
 128       return 1;
 129     }
 130
 131   puts ("going to cancel early");
 132   if (pthread_cancel (th) != 0)
 133     {
 134       puts ("2nd cancel failed");
 135       return 1;
 136     }
 137
 138   r = pthread_barrier_wait (&b);
 139   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
 140     {
 141       puts ("barrier_wait failed");
 142       exit (1);
 143     }
 144
 145   if (pthread_join (th, &status) != 0)
 146     {
 147       puts ("2nd join failed");
 148       return 1;
 149     }
 150   if (status != PTHREAD_CANCELED)
 151     {
 152       puts ("2nd thread not canceled");
 153       return 1;
 154     }
 155
 156   if (cl_called == 0)
 157     {
 158       printf ("cleanup handler not called\n");
 159       return 1;
 160     }
 161   if (cl_called > 1)
 162     {
 163       printf ("cleanup handler called more than once\n");
 164       return 1;
 165     }
 166
 167   puts ("early cancellation succeeded");
 168
 169   return 0;
 170 }
 171
 172 #define TEST_FUNCTION do_test ()
 173 #include "../test-skeleton.c"