1 files changed, 128 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libpthread/t_preempt.c b/contrib/netbsd-tests/lib/libpthread/t_preempt.c
new file mode 100644
index 0000000..7ec43b6
--- /dev/null
+++ b/contrib/netbsd-tests/lib/libpthread/t_preempt.c
@@ -0,0 +1,128 @@
+/* $NetBSD: t_preempt.c,v 1.2 2010/11/03 16:10:22 christos Exp $ */
+
+/*
+ * Copyright (c) 2008 The NetBSD Foundation, Inc.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <sys/cdefs.h>
+__COPYRIGHT("@(#) Copyright (c) 2008\
+ The NetBSD Foundation, inc. All rights reserved.");
+__RCSID("$NetBSD: t_preempt.c,v 1.2 2010/11/03 16:10:22 christos Exp $");
+
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <atf-c.h>
+
+#include "h_common.h"
+
+pthread_mutex_t mutex;
+pthread_cond_t cond;
+int started;
+
+#define HUGE_BUFFER    1<<20
+#define NTHREADS    1
+
+static void *
+threadfunc(void *arg)
+{
+	printf("2: Second thread.\n");
+
+	printf("2: Locking mutex\n");
+	PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
+	printf("2: Got mutex.\n");
+	started++;
+
+	PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+	PTHREAD_REQUIRE(pthread_cond_signal(&cond));
+	sleep(1);
+
+	return NULL;
+}
+
+ATF_TC(preempt1);
+ATF_TC_HEAD(preempt1, tc)
+{
+	atf_tc_set_md_var(tc, "descr",
+		"Checks kernel preemption during a large uiomove");
+}
+ATF_TC_BODY(preempt1, tc)
+{
+	int i;
+	ssize_t rv;
+	pthread_t new;
+	void *joinval;
+
+	char *mem;
+	int fd;
+
+	mem = malloc(HUGE_BUFFER);
+	ATF_REQUIRE_MSG(mem != NULL, "%s", strerror(errno));
+
+	fd = open("/dev/urandom", O_RDONLY, 0);
+	ATF_REQUIRE_MSG(fd != -1, "%s", strerror(errno));
+
+	printf("1: preempt test\n");
+
+	PTHREAD_REQUIRE(pthread_cond_init(&cond, NULL));
+	PTHREAD_REQUIRE(pthread_mutex_init(&mutex, NULL));
+
+	PTHREAD_REQUIRE(pthread_mutex_lock(&mutex));
+
+	started = 0;
+
+	for (i = 0; i < NTHREADS; i++) {
+		PTHREAD_REQUIRE(pthread_create(&new, NULL, threadfunc, NULL));
+	}
+
+	while (started < NTHREADS) {
+		PTHREAD_REQUIRE(pthread_cond_wait(&cond, &mutex));
+	}
+
+	printf("1: Thread has started.\n");
+
+	PTHREAD_REQUIRE(pthread_mutex_unlock(&mutex));
+	printf("1: After releasing the mutex.\n");
+
+	rv = read(fd, mem, HUGE_BUFFER);
+	close(fd);
+	ATF_REQUIRE_EQ(rv, HUGE_BUFFER);
+
+	PTHREAD_REQUIRE(pthread_join(new, &joinval));
+
+	printf("1: Thread joined.\n");
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+	ATF_TP_ADD_TC(tp, preempt1);
+
+	return atf_no_error();
+}