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[glibc.git] / nptl / tst-signal1.c
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1 /* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <errno.h>
21 #include <pthread.h>
22 #include <signal.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <unistd.h>
27 #include <sys/mman.h>
28 #include <sys/wait.h>
31 static sigset_t ss;
32 static pthread_barrier_t *b;
35 static void *
36 tf (void *arg)
38 sigdelset (&ss, SIGINT);
40 if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0)
42 puts ("2nd pthread_sigmask failed");
43 exit (1);
46 pthread_barrier_wait (b);
48 int sig;
49 int res = sigwait (&ss, &sig);
50 if (res == 0)
52 printf ("sigwait returned successfully with signal %d\n", sig);
53 exit (1);
56 printf ("sigwait returned with %s (%d)\n", strerror (res), res);
58 return NULL;
62 static void
63 receiver (void)
65 pthread_t th;
67 /* Make sure the process doesn't run forever. */
68 alarm (10);
70 sigfillset (&ss);
72 if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0)
74 puts ("1st pthread_sigmask failed");
75 exit (1);
78 if (pthread_create (&th, NULL, tf, NULL) != 0)
80 puts ("pthread_create failed");
81 exit (1);
84 if (pthread_join (th, NULL) == 0)
86 puts ("thread joined?!");
87 exit (1);
90 _exit (0);
94 static int
95 do_test (void)
97 char tmp[] = "/tmp/tst-signal1-XXXXXX";
99 int fd = mkstemp (tmp);
100 if (fd == -1)
102 puts ("mkstemp failed");
103 exit (1);
106 unlink (tmp);
108 int i;
109 for (i = 0; i < 20; ++i)
110 write (fd, "foobar xyzzy", 12);
112 b = mmap (NULL, sizeof (pthread_barrier_t), PROT_READ | PROT_WRITE,
113 MAP_SHARED, fd, 0);
114 if (b == MAP_FAILED)
116 puts ("mmap failed");
117 exit (1);
120 pthread_barrierattr_t ba;
121 if (pthread_barrierattr_init (&ba) != 0)
123 puts ("barrierattr_init failed");
124 exit (1);
127 if (pthread_barrierattr_setpshared (&ba, PTHREAD_PROCESS_SHARED) != 0)
129 puts ("barrierattr_setpshared failed");
130 exit (1);
133 if (pthread_barrier_init (b, &ba, 2) != 0)
135 puts ("barrier_init failed");
136 exit (1);
139 if (pthread_barrierattr_destroy (&ba) != 0)
141 puts ("barrierattr_destroy failed");
142 exit (1);
145 pid_t pid = fork ();
146 if (pid == -1)
148 puts ("fork failed");
149 exit (1);
152 if (pid == 0)
153 receiver ();
155 pthread_barrier_wait (b);
157 /* Wait a bit more. */
158 struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 };
159 nanosleep (&ts, NULL);
161 /* Send the signal. */
162 puts ("sending the signal now");
163 kill (pid, SIGINT);
165 /* Wait for the process to terminate. */
166 int status;
167 if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
169 puts ("wrong child reported terminated");
170 exit (1);
173 if (!WIFSIGNALED (status))
175 puts ("child wasn't signalled");
176 exit (1);
179 if (WTERMSIG (status) != SIGINT)
181 puts ("child not terminated with SIGINT");
182 exit (1);
185 return 0;
188 #define TEST_FUNCTION do_test ()
189 #include "../test-skeleton.c"