Test program for sigwait.

Submitted by: Daniel M. Eischen <eischen@vigrid.com>

2 files changed, 205 insertions, 0 deletions

diff --git a/lib/libc_r/test/sigwait/Makefile b/lib/libc_r/test/sigwait/Makefile
new file mode 100644
index 0000000..fbd9233
--- /dev/null
+++ b/lib/libc_r/test/sigwait/Makefile
@@ -0,0 +1,8 @@
+#	$Id$
+
+PROG=		sigwait
+SRCS=		sigwait.c
+NOMAN=		1
+LDFLAGS=	-pthread
+
+.include <bsd.prog.mk>
diff --git a/lib/libc_r/test/sigwait/sigwait.c b/lib/libc_r/test/sigwait/sigwait.c
new file mode 100644
index 0000000..cad5370
--- /dev/null
+++ b/lib/libc_r/test/sigwait/sigwait.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright (c) 1998 Daniel M. Eischen <eischen@vigrid.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by John Birrell.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <string.h>
+
+static int	sigcounts[NSIG + 1];
+static sigset_t	wait_mask;
+
+static void *
+sigwaiter (void *arg)
+{
+	int signo;
+
+	while (sigcounts[SIGINT] == 0) {
+		if (sigwait (&wait_mask, &signo) != 0) {
+			printf ("Unable to wait for signal, errno %d\n",
+				errno);
+			exit (1);
+		}
+		sigcounts[signo]++;
+		printf ("Sigwait caught signal %d\n", signo);
+	}
+
+	pthread_exit (arg);
+	return (NULL);
+}
+
+
+static void
+sighandler (int signo)
+{
+	printf ("Signal handler caught signal %d\n", signo);
+
+	if ((signo >= 0) && (signo <= NSIG))
+		sigcounts[signo]++;
+}
+
+static void
+send_thread_signal (pthread_t tid, int signo)
+{
+	if (pthread_kill (tid, signo) != 0) {
+		printf ("Unable to send thread signal, errno %d.\n", errno);
+		exit (1);
+	}
+}
+
+static void
+send_process_signal (int signo)
+{
+	if (kill (getpid (), signo) != 0) {
+		printf ("Unable to send process signal, errno %d.\n", errno);
+		exit (1);
+	}
+}
+
+
+int main (int argc, char *argv[])
+{
+	pthread_attr_t	pattr;
+	pthread_t	tid;
+	void *		exit_status;
+	struct sigaction act;
+
+	/* Initialize our signal counts. */
+	memset ((void *) sigcounts, 0, NSIG * sizeof (int));
+
+	/* Setupt our wait mask. */
+	sigemptyset (&wait_mask);		/* Default action	*/
+	sigaddset (&wait_mask, SIGINT);		/* terminate		*/
+	sigaddset (&wait_mask, SIGHUP);		/* terminate		*/
+	sigaddset (&wait_mask, SIGQUIT);	/* create core image	*/
+	sigaddset (&wait_mask, SIGURG);		/* ignore		*/
+	sigaddset (&wait_mask, SIGIO);		/* ignore		*/
+	sigaddset (&wait_mask, SIGUSR1);	/* terminate		*/
+
+	/* Ignore signal SIGIO. */
+	sigemptyset (&act.sa_mask);
+	sigaddset (&act.sa_mask, SIGIO);
+	act.sa_handler = SIG_IGN;
+	act.sa_flags = 0;
+	sigaction (SIGIO, &act, NULL);
+
+	/* Install a signal handler for SIGURG */
+	sigemptyset (&act.sa_mask);
+	sigaddset (&act.sa_mask, SIGURG);
+	act.sa_handler = sighandler;
+	act.sa_flags = SA_RESTART;
+	sigaction (SIGURG, &act, NULL);
+
+	/* Install a signal handler for SIGXCPU */
+	sigemptyset (&act.sa_mask);
+	sigaddset (&act.sa_mask, SIGXCPU);
+	sigaction (SIGXCPU, &act, NULL);
+
+	/*
+	 * Initialize the thread attribute.
+	 */
+	if ((pthread_attr_init (&pattr) != 0) ||
+	    (pthread_attr_setdetachstate (&pattr,
+	    PTHREAD_CREATE_JOINABLE) != 0)) {
+		printf ("Unable to initialize thread attributes.\n");
+		exit (1);
+	}
+
+	/*
+	 * Create the sigwaiter thread.
+	 */
+	if (pthread_create (&tid, &pattr, sigwaiter, NULL) != 0) {
+		printf ("Unable to create thread, errno %d.\n", errno);
+		exit (1);
+	}
+
+	/*
+	 * Verify that an ignored signal doesn't cause a wakeup.
+	 * We don't have a handler installed for SIGIO.
+	 */
+	printf ("Sending pthread_kill SIGIO.\n");
+	send_thread_signal (tid, SIGIO);
+	sleep (1);
+	printf ("Sending kill SIGIO.\n");
+	send_process_signal (SIGIO);
+	sleep (1);
+	if (sigcounts[SIGIO] != 0)
+		printf ("FAIL: sigwait wakes up for ignored signal SIGIO.\n");
+
+	/*
+	 * Verify that a signal with a default action of ignore, for
+	 * which we have a signal handler installed, will release a sigwait.
+	 */
+	send_thread_signal (tid, SIGURG);
+	sleep (1);
+	send_process_signal (SIGURG);
+	sleep (1);
+	if (sigcounts[SIGURG] != 2)
+		printf ("FAIL: sigwait doesn't wake up for SIGURG.\n");
+
+	/*
+	 * Verify that a signal with a default action that terminates
+	 * the process will release a sigwait.
+	 */
+	send_thread_signal (tid, SIGUSR1);
+	sleep (1);
+	send_process_signal (SIGUSR1);
+	sleep (1);
+	if (sigcounts[SIGUSR1] != 2)
+		printf ("FAIL: sigwait doesn't wake up for SIGUSR1.\n");
+
+	/*
+	 * Verify that we can still kill the process for a signal
+	 * not being waited on by sigwait.
+	 */
+	send_process_signal (SIGPIPE);
+	printf ("FAIL: SIGPIPE did not terminate process.\n");
+
+	/*
+	 * Wait for the thread to finish.
+	 */
+	pthread_join (tid, &exit_status);
+
+	return (0);
+}