sysdeps/pthread/tst-kill3.c

   1 /* Copyright (C) 2003-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <pthread.h>
  20 #include <signal.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <sys/time.h>
  25
  26
  27 static int do_test (void);
  28
  29 #define TEST_FUNCTION do_test ()
  30 #include "../test-skeleton.c"
  31
  32 static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
  33 static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
  34 static pthread_barrier_t b;
  35
  36
  37 static void
  38 handler (int sig)
  39 {
  40   write_message ("handler called\n");
  41   _exit (1);
  42 }
  43
  44
  45 static void *
  46 tf (void *a)
  47 {
  48   /* Block SIGUSR1.  */
  49   sigset_t ss;
  50
  51   sigemptyset (&ss);
  52   sigaddset (&ss, SIGUSR1);
  53   if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
  54     {
  55       puts ("child: sigmask failed");
  56       exit (1);
  57     }
  58
  59   if (pthread_mutex_lock (&m) != 0)
  60     {
  61       puts ("child: mutex_lock failed");
  62       exit (1);
  63     }
  64
  65   int e = pthread_barrier_wait (&b);
  66   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  67     {
  68       puts ("child: barrier_wait failed");
  69       exit (1);
  70     }
  71
  72   /* Compute timeout.  */
  73   struct timeval tv;
  74   (void) gettimeofday (&tv, NULL);
  75   struct timespec ts;
  76   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  77   /* Timeout: 1sec.  */
  78   ts.tv_sec += 1;
  79
  80   /* This call should never return.  */
  81   if (pthread_cond_timedwait (&c, &m, &ts) != ETIMEDOUT)
  82     {
  83       puts ("cond_timedwait didn't time out");
  84       exit (1);
  85     }
  86
  87   return NULL;
  88 }
  89
  90
  91 int
  92 do_test (void)
  93 {
  94   pthread_t th;
  95
  96   struct sigaction sa;
  97   sigemptyset (&sa.sa_mask);
  98   sa.sa_flags = 0;
  99   sa.sa_handler = handler;
 100   if (sigaction (SIGUSR1, &sa, NULL) != 0)
 101     {
 102       puts ("sigaction failed");
 103       exit (1);
 104     }
 105
 106   if (pthread_barrier_init (&b, NULL, 2) != 0)
 107     {
 108       puts ("barrier_init failed");
 109       exit (1);
 110     }
 111
 112   if (pthread_create (&th, NULL, tf, NULL) != 0)
 113     {
 114       puts ("create failed");
 115       exit (1);
 116     }
 117
 118   int e = pthread_barrier_wait (&b);
 119   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 120     {
 121       puts ("barrier_wait failed");
 122       exit (1);
 123     }
 124
 125   if (pthread_mutex_lock (&m) != 0)
 126     {
 127       puts ("mutex_lock failed");
 128       exit (1);
 129     }
 130
 131   /* Send the thread a signal which it has blocked.  */
 132   if (pthread_kill (th, SIGUSR1) != 0)
 133     {
 134       puts ("kill failed");
 135       exit (1);
 136     }
 137
 138   if (pthread_mutex_unlock (&m) != 0)
 139     {
 140       puts ("mutex_unlock failed");
 141       exit (1);
 142     }
 143
 144   void *r;
 145   if (pthread_join (th, &r) != 0)
 146     {
 147       puts ("join failed");
 148       exit (1);
 149     }
 150   if (r != NULL)
 151     {
 152       puts ("return value wrong");
 153       exit (1);
 154     }
 155
 156   return 0;
 157 }