sysdeps/pthread/tst-kill2.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 <sys/time.h>
  24
  25
  26 static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
  27 static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
  28 static pthread_barrier_t b;
  29
  30 static void *
  31 tf (void *a)
  32 {
  33   /* Block SIGUSR1.  */
  34   sigset_t ss;
  35
  36   sigemptyset (&ss);
  37   sigaddset (&ss, SIGUSR1);
  38   if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
  39     {
  40       puts ("child: sigmask failed");
  41       exit (1);
  42     }
  43
  44   if (pthread_mutex_lock (&m) != 0)
  45     {
  46       puts ("child: mutex_lock failed");
  47       exit (1);
  48     }
  49
  50   int e = pthread_barrier_wait (&b);
  51   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  52     {
  53       puts ("child: barrier_wait failed");
  54       exit (1);
  55     }
  56
  57   /* Compute timeout.  */
  58   struct timeval tv;
  59   (void) gettimeofday (&tv, NULL);
  60   struct timespec ts;
  61   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  62   /* Timeout: 1sec.  */
  63   ts.tv_sec += 1;
  64
  65   /* This call should never return.  */
  66   if (pthread_cond_timedwait (&c, &m, &ts) != ETIMEDOUT)
  67     {
  68       puts ("cond_timedwait didn't time out");
  69       exit (1);
  70     }
  71
  72   return NULL;
  73 }
  74
  75
  76 int
  77 do_test (void)
  78 {
  79   pthread_t th;
  80
  81   if (pthread_barrier_init (&b, NULL, 2) != 0)
  82     {
  83       puts ("barrier_init failed");
  84       exit (1);
  85     }
  86
  87   if (pthread_create (&th, NULL, tf, NULL) != 0)
  88     {
  89       puts ("create failed");
  90       exit (1);
  91     }
  92
  93   int e = pthread_barrier_wait (&b);
  94   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  95     {
  96       puts ("barrier_wait failed");
  97       exit (1);
  98     }
  99
 100   if (pthread_mutex_lock (&m) != 0)
 101     {
 102       puts ("mutex_lock failed");
 103       exit (1);
 104     }
 105
 106   /* Send the thread a signal which it has blocked.  */
 107   if (pthread_kill (th, SIGUSR1) != 0)
 108     {
 109       puts ("kill failed");
 110       exit (1);
 111     }
 112
 113   if (pthread_mutex_unlock (&m) != 0)
 114     {
 115       puts ("mutex_unlock failed");
 116       exit (1);
 117     }
 118
 119   void *r;
 120   if (pthread_join (th, &r) != 0)
 121     {
 122       puts ("join failed");
 123       exit (1);
 124     }
 125   if (r != NULL)
 126     {
 127       puts ("return value wrong");
 128       exit (1);
 129     }
 130
 131   return 0;
 132 }
 133
 134
 135 #define TEST_FUNCTION do_test ()
 136 #include "../test-skeleton.c"