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authorjruoho <jruoho@NetBSD.org>2011-05-05 13:36:04 +0000
committerjruoho <jruoho@NetBSD.org>2011-05-05 13:36:04 +0000
commit92e06c64d0ad4adf32a2e0d00e3402c577ccde5e (patch)
tree23b6c9259e20bea0b9723f1a8fa61efecdd7ba79 /tests/include/sys
parent92c8a71266651fed6481d8fe01263c2cd5af96fa (diff)
Try to mirror the real source with the test directory structure (otherwise
the latter carries a risk of becoming a difficult mess to manage.)
Diffstat (limited to 'tests/include/sys')
-rw-r--r--tests/include/sys/Makefile4
-rw-r--r--tests/include/sys/t_tree.c124
2 files changed, 126 insertions, 2 deletions
diff --git a/tests/include/sys/Makefile b/tests/include/sys/Makefile
index 6352912b4e0..55dff1d36e5 100644
--- a/tests/include/sys/Makefile
+++ b/tests/include/sys/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.3 2011/05/05 05:24:45 jruoho Exp $
+# $NetBSD: Makefile,v 1.4 2011/05/05 13:36:05 jruoho Exp $
NOMAN= # defined
@@ -7,6 +7,6 @@ NOMAN= # defined
TESTSDIR= ${TESTSBASE}/include/sys
LDADD.t_bitops+= -lm
-TESTS_C= t_bitops t_bootblock t_types
+TESTS_C= t_bitops t_bootblock t_tree t_types
.include <bsd.test.mk>
diff --git a/tests/include/sys/t_tree.c b/tests/include/sys/t_tree.c
new file mode 100644
index 00000000000..498f7ee4c64
--- /dev/null
+++ b/tests/include/sys/t_tree.c
@@ -0,0 +1,124 @@
+/* $NetBSD: t_tree.c,v 1.1 2011/05/05 13:36:05 jruoho Exp $ */
+
+/*-
+ * Copyright (c) 2010, 2011 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>
+#include <sys/tree.h>
+
+#include <atf-c.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+struct mist {
+ RB_ENTRY(mist) rbentry;
+ int key;
+};
+RB_HEAD(head, mist) tt;
+
+static int
+mistcmp(struct mist *a, struct mist *b)
+{
+#if 0
+ return (b->key - a->key); /* wrong, can overflow */
+#else
+ if (b->key > a->key)
+ return 1;
+ else if (b->key < a->key)
+ return (-1);
+ else
+ return 0;
+#endif
+}
+
+RB_PROTOTYPE(head, mist, rbentry, mistcmp)
+RB_GENERATE(head, mist, rbentry, mistcmp)
+
+static struct mist *
+addmist(int key)
+{
+ struct mist *m;
+
+ m = malloc(sizeof(struct mist));
+ m->key = key;
+ RB_INSERT(head, &tt, m);
+ return m;
+}
+
+static int
+findmist(struct mist *m)
+{
+
+ return (!!RB_FIND(head, &tt, m));
+}
+
+#define N 1000
+static int
+test(void)
+{
+ struct mist *m[N];
+ int fail, i, j;
+
+ RB_INIT(&tt);
+ fail = 0;
+ for (i = 0; i < N; i++) {
+ m[i] = addmist(random() << 1); /* use all 32 bits */
+ for (j = 0; j <= i; j++)
+ if (!findmist(m[j]))
+ fail++;
+ }
+ return fail;
+}
+
+ATF_TC(tree_rbstress);
+ATF_TC_HEAD(tree_rbstress, tc)
+{
+
+ atf_tc_set_md_var(tc, "descr", "rb-tree stress test");
+}
+
+ATF_TC_BODY(tree_rbstress, tc)
+{
+ int i, fail, f;
+
+ srandom(4711);
+ fail = 0;
+ for (i = 0; i < 10; i++) {
+ f = test();
+ if (f) {
+ atf_tc_fail_nonfatal("loop %d: %d errors\n", i, f);
+ fail += f;
+ }
+ }
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+ ATF_TP_ADD_TC(tp, tree_rbstress);
+
+ return atf_no_error();
+}