nptl/tst-join5.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 <stdio.h>
  22 #include <stdlib.h>
  23 #include <time.h>
  24 #include <unistd.h>
  25
  26
  27 static void
  28 wait_code (void)
  29 {
  30   struct timespec ts = { .tv_sec = 0, .tv_nsec = 200000000 };
  31   while (nanosleep (&ts, &ts) < 0)
  32     ;
  33 }
  34
  35
  36 #ifdef WAIT_IN_CHILD
  37 static pthread_barrier_t b;
  38 #endif
  39
  40
  41 static void *
  42 tf1 (void *arg)
  43 {
  44 #ifdef WAIT_IN_CHILD
  45   int e = pthread_barrier_wait (&b);
  46   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  47     {
  48       printf ("%s: barrier_wait failed\n", __func__);
  49       exit (1);
  50     }
  51
  52   wait_code ();
  53 #endif
  54
  55   pthread_join ((pthread_t) arg, NULL);
  56
  57   exit (42);
  58 }
  59
  60
  61 static void *
  62 tf2 (void *arg)
  63 {
  64 #ifdef WAIT_IN_CHILD
  65   int e = pthread_barrier_wait (&b);
  66   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  67     {
  68       printf ("%s: barrier_wait failed\n", __func__);
  69       exit (1);
  70     }
  71
  72   wait_code ();
  73 #endif
  74   pthread_join ((pthread_t) arg, NULL);
  75
  76   exit (43);
  77 }
  78
  79
  80 static int
  81 do_test (void)
  82 {
  83 #ifdef WAIT_IN_CHILD
  84   if (pthread_barrier_init (&b, NULL, 2) != 0)
  85     {
  86       puts ("barrier_init failed");
  87       return 1;
  88     }
  89 #endif
  90
  91   pthread_t th;
  92
  93   int err = pthread_join (pthread_self (), NULL);
  94   if (err == 0)
  95     {
  96       puts ("1st circular join succeeded");
  97       return 1;
  98     }
  99   if (err != EDEADLK)
 100     {
 101       printf ("1st circular join %d, not EDEADLK\n", err);
 102       return 1;
 103     }
 104
 105   if (pthread_create (&th, NULL, tf1, (void *) pthread_self ()) != 0)
 106     {
 107       puts ("1st create failed");
 108       return 1;
 109     }
 110
 111 #ifndef WAIT_IN_CHILD
 112   wait_code ();
 113 #endif
 114
 115   if (pthread_cancel (th) != 0)
 116     {
 117       puts ("cannot cancel 1st thread");
 118       return 1;
 119     }
 120
 121 #ifdef WAIT_IN_CHILD
 122   int e = pthread_barrier_wait (&b);
 123   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 124     {
 125       printf ("%s: barrier_wait failed\n", __func__);
 126       return 1;
 127     }
 128 #endif
 129
 130   void *r;
 131   err = pthread_join (th, &r);
 132   if (err != 0)
 133     {
 134       printf ("cannot join 1st thread: %d\n", err);
 135       return 1;
 136     }
 137   if (r != PTHREAD_CANCELED)
 138     {
 139       puts ("1st thread not canceled");
 140       return 1;
 141     }
 142
 143   err = pthread_join (pthread_self (), NULL);
 144   if (err == 0)
 145     {
 146       puts ("2nd circular join succeeded");
 147       return 1;
 148     }
 149   if (err != EDEADLK)
 150     {
 151       printf ("2nd circular join %d, not EDEADLK\n", err);
 152       return 1;
 153     }
 154
 155   if (pthread_create (&th, NULL, tf2, (void *) pthread_self ()) != 0)
 156     {
 157       puts ("2nd create failed");
 158       return 1;
 159     }
 160
 161 #ifndef WAIT_IN_CHILD
 162   wait_code ();
 163 #endif
 164
 165   if (pthread_cancel (th) != 0)
 166     {
 167       puts ("cannot cancel 2nd thread");
 168       return 1;
 169     }
 170
 171 #ifdef WAIT_IN_CHILD
 172   e = pthread_barrier_wait (&b);
 173   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 174     {
 175       printf ("%s: barrier_wait failed\n", __func__);
 176       return 1;
 177     }
 178 #endif
 179
 180   if (pthread_join (th, &r) != 0)
 181     {
 182       puts ("cannot join 2nd thread");
 183       return 1;
 184     }
 185   if (r != PTHREAD_CANCELED)
 186     {
 187       puts ("2nd thread not canceled");
 188       return 1;
 189     }
 190
 191   err = pthread_join (pthread_self (), NULL);
 192   if (err == 0)
 193     {
 194       puts ("3rd circular join succeeded");
 195       return 1;
 196     }
 197   if (err != EDEADLK)
 198     {
 199       printf ("3rd circular join %d, not EDEADLK\n", err);
 200       return 1;
 201     }
 202
 203   return 0;
 204 }
 205
 206 #define TEST_FUNCTION do_test ()
 207 #include "../test-skeleton.c"