Add a test for pthread's cv and cancellation.

tools/regression/pthread/cv_cancel1/Makefile

@@ -0,0 +1,8 @@
+# $FreeBSD$
+
+PROG=	cv_cancel1
+NO_MAN=
+
+LDADD=	-lpthread
+
+.include <bsd.prog.mk>

tools/regression/pthread/cv_cancel1/cv_cancel1.c

@@ -0,0 +1,85 @@
+/*-
+ * Copyright (c) 2006, David Xu <davidxu@freebsd.org>
+ * 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 unmodified, 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ *
+ */
+#include <pthread.h>
+#include <stdio.h>
+
+#define NLOOPS	10
+
+pthread_mutex_t m;
+pthread_cond_t cv;
+
+int wake;
+int stop;
+
+void *
+thr_routine(void *arg)
+{
+	pthread_mutex_lock(&m);
+	while (wake == 0)
+		pthread_cond_wait(&cv, &m);
+	pthread_mutex_unlock(&m);
+
+	while (stop == 0)
+		pthread_yield();
+	return (NULL);
+}
+
+int main(int argc, char **argv)
+{
+	pthread_t td;
+	int i;
+	void *result;
+
+	pthread_setconcurrency(1);
+	for (i = 0; i < NLOOPS; ++i) {
+		stop = 0;
+		wake = 0;
+
+		pthread_create(&td, NULL, thr_routine, NULL);
+		sleep(1);
+		printf("trying: %d\n", i);
+		pthread_mutex_lock(&m);
+		wake = 1;
+		pthread_cond_signal(&cv);
+		pthread_cancel(td);
+		pthread_mutex_unlock(&m);
+		stop = 1;
+		result = NULL;
+		pthread_join(td, &result);
+		if (result == PTHREAD_CANCELED) {
+			printf("the condition variable implemention does not\n"
+			       "conform to SUSv3, a thread unblocked from\n"
+			       "condition variable still can be canceled.\n");
+			return (1);
+		}
+	}
+
+	printf("OK\n");
+	return (0);
+}