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100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/* Test of pthread_sigmask in a multi-threaded program.
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Copyright (C) 2011-2017 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2011. */
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#include <config.h>
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#include <signal.h>
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "glthread/thread.h"
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#include "macros.h"
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#if USE_POSIX_THREADS
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static gl_thread_t main_thread;
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static gl_thread_t killer_thread;
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static void *
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killer_thread_func (void *arg)
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{
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sleep (1);
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pthread_kill (main_thread, SIGINT);
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return NULL;
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}
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static volatile int sigint_occurred;
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static void
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sigint_handler (int sig)
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{
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sigint_occurred++;
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}
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int
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main (int argc, char *argv[])
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{
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sigset_t set;
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signal (SIGINT, sigint_handler);
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sigemptyset (&set);
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sigaddset (&set, SIGINT);
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/* Check error handling. */
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ASSERT (pthread_sigmask (1729, &set, NULL) == EINVAL);
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/* Block SIGINT. */
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ASSERT (pthread_sigmask (SIG_BLOCK, &set, NULL) == 0);
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/* Request a SIGINT signal from another thread. */
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main_thread = gl_thread_self ();
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ASSERT (glthread_create (&killer_thread, killer_thread_func, NULL) == 0);
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/* Wait. */
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sleep (2);
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/* The signal should not have arrived yet, because it is blocked. */
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ASSERT (sigint_occurred == 0);
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/* Unblock SIGINT. */
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ASSERT (pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0);
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/* The signal should have arrived now, because POSIX says
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"If there are any pending unblocked signals after the call to
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pthread_sigmask(), at least one of those signals shall be delivered
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before the call to pthread_sigmask() returns." */
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ASSERT (sigint_occurred == 1);
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return 0;
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}
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#else
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int
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main ()
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{
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fputs ("Skipping test: POSIX threads not enabled\n", stderr);
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return 77;
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}
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#endif
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