microblaze: 64b atomic operations are not supported.
[glibc.git] / nptl / eintr.c
blob83e6dab035fd57fe7f8e5bbf17612a391704e749
1 /* Copyright (C) 2003-2014 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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, see
17 <http://www.gnu.org/licenses/>. */
19 #include <pthread.h>
20 #include <signal.h>
21 #include <unistd.h>
24 static int the_sig;
27 static void
28 eintr_handler (int sig)
30 if (sig != the_sig)
32 write (STDOUT_FILENO, "eintr_handler: signal number wrong\n", 35);
33 _exit (1);
35 write (STDOUT_FILENO, ".", 1);
39 static void *
40 eintr_source (void *arg)
42 struct timespec ts = { .tv_sec = 0, .tv_nsec = 500000 };
44 if (arg == NULL)
46 sigset_t ss;
47 sigemptyset (&ss);
48 sigaddset (&ss, the_sig);
49 pthread_sigmask (SIG_BLOCK, &ss, NULL);
52 while (1)
54 if (arg != NULL)
55 pthread_kill (*(pthread_t *) arg, the_sig);
56 else
57 kill (getpid (), the_sig);
59 nanosleep (&ts, NULL);
62 /* NOTREACHED */
63 return NULL;
67 static void
68 setup_eintr (int sig, pthread_t *thp)
70 struct sigaction sa;
71 sigemptyset (&sa.sa_mask);
72 sa.sa_flags = 0;
73 sa.sa_handler = eintr_handler;
74 if (sigaction (sig, &sa, NULL) != 0)
76 puts ("setup_eintr: sigaction failed");
77 exit (1);
79 the_sig = sig;
81 /* Create the thread which will fire off the signals. */
82 pthread_t th;
83 if (pthread_create (&th, NULL, eintr_source, thp) != 0)
85 puts ("setup_eintr: pthread_create failed");
86 exit (1);