nptl/tst-kill3.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 <signal.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <unistd.h>
  25 #include <sys/time.h>
  26
  27
  28 static int do_test (void);
  29
  30 #define TEST_FUNCTION do_test ()
  31 #include "../test-skeleton.c"
  32
  33 static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
  34 static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
  35 static pthread_barrier_t b;
  36
  37
  38 static void
  39 handler (int sig)
  40 {
  41   write_message ("handler called\n");
  42   _exit (1);
  43 }
  44
  45
  46 static void *
  47 tf (void *a)
  48 {
  49   /* Block SIGUSR1.  */
  50   sigset_t ss;
  51
  52   sigemptyset (&ss);
  53   sigaddset (&ss, SIGUSR1);
  54   if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
  55     {
  56       puts ("child: sigmask failed");
  57       exit (1);
  58     }
  59
  60   if (pthread_mutex_lock (&m) != 0)
  61     {
  62       puts ("child: mutex_lock failed");
  63       exit (1);
  64     }
  65
  66   int e = pthread_barrier_wait (&b);
  67   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  68     {
  69       puts ("child: barrier_wait failed");
  70       exit (1);
  71     }
  72
  73   /* Compute timeout.  */
  74   struct timeval tv;
  75   (void) gettimeofday (&tv, NULL);
  76   struct timespec ts;
  77   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  78   /* Timeout: 1sec.  */
  79   ts.tv_sec += 1;
  80
  81   /* This call should never return.  */
  82   if (pthread_cond_timedwait (&c, &m, &ts) != ETIMEDOUT)
  83     {
  84       puts ("cond_timedwait didn't time out");
  85       exit (1);
  86     }
  87
  88   return NULL;
  89 }
  90
  91
  92 int
  93 do_test (void)
  94 {
  95   pthread_t th;
  96
  97   struct sigaction sa;
  98   sigemptyset (&sa.sa_mask);
  99   sa.sa_flags = 0;
 100   sa.sa_handler = handler;
 101   if (sigaction (SIGUSR1, &sa, NULL) != 0)
 102     {
 103       puts ("sigaction failed");
 104       exit (1);
 105     }
 106
 107   if (pthread_barrier_init (&b, NULL, 2) != 0)
 108     {
 109       puts ("barrier_init failed");
 110       exit (1);
 111     }
 112
 113   if (pthread_create (&th, NULL, tf, NULL) != 0)
 114     {
 115       puts ("create failed");
 116       exit (1);
 117     }
 118
 119   int e = pthread_barrier_wait (&b);
 120   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 121     {
 122       puts ("barrier_wait failed");
 123       exit (1);
 124     }
 125
 126   if (pthread_mutex_lock (&m) != 0)
 127     {
 128       puts ("mutex_lock failed");
 129       exit (1);
 130     }
 131
 132   /* Send the thread a signal which it has blocked.  */
 133   if (pthread_kill (th, SIGUSR1) != 0)
 134     {
 135       puts ("kill failed");
 136       exit (1);
 137     }
 138
 139   if (pthread_mutex_unlock (&m) != 0)
 140     {
 141       puts ("mutex_unlock failed");
 142       exit (1);
 143     }
 144
 145   void *r;
 146   if (pthread_join (th, &r) != 0)
 147     {
 148       puts ("join failed");
 149       exit (1);
 150     }
 151   if (r != NULL)
 152     {
 153       puts ("return value wrong");
 154       exit (1);
 155     }
 156
 157   return 0;
 158 }