xnu-1456.1.26.tar.gz

[apple/xnu.git] / tools / tests / libMicro / file_lock.c

diff --git a/tools/tests/libMicro/file_lock.c b/tools/tests/libMicro/file_lock.c
new file mode 100644 (file)
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+++ b/tools/tests/libMicro/file_lock.c
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+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms
+ * of the Common Development and Distribution License
+ * (the "License").  You may not use this file except
+ * in compliance with the License.
+ *
+ * You can obtain a copy of the license at
+ * src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing
+ * permissions and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL
+ * HEADER in each file and include the License file at
+ * usr/src/OPENSOLARIS.LICENSE.  If applicable,
+ * add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your
+ * own identifying information: Portions Copyright [yyyy]
+ * [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*
+ * test file locking
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include "libmicro.h"
+
+static int                     file;
+
+int
+block(int index)
+{
+       struct flock            fl;
+
+       fl.l_type = F_WRLCK;
+       fl.l_whence = SEEK_SET;
+       fl.l_start = index;
+       fl.l_len = 1;
+       return (fcntl(file, F_SETLKW, &fl) == -1);
+}
+
+int
+unblock(int index)
+{
+       struct flock            fl;
+
+       fl.l_type = F_UNLCK;
+       fl.l_whence = SEEK_SET;
+       fl.l_start = index;
+       fl.l_len = 1;
+       return (fcntl(file, F_SETLK, &fl) == -1);
+}
+int
+benchmark_init()
+{
+       char                    fname[80];
+       int     errors = 0;
+
+       (void) sprintf(fname, "/private/tmp/oneflock.%ld", getpid());
+
+       file = open(fname, O_CREAT | O_TRUNC | O_RDWR, 0600);
+
+       if (file == -1) {
+               errors++;
+       }
+       if (unlink(fname)) {
+               errors++;
+       }
+
+       lm_tsdsize = 0;
+
+       return (errors);
+}
+
+/*ARGSUSED*/
+int
+benchmark(void *tsd, result_t *res)
+{
+       int                     i;
+       int                     e = 0;
+
+       for (i = 0; i < lm_optB; i ++) {
+               e += block(0);
+               e += unblock(0);
+       }
+       res->re_count = i;
+       res->re_errors = e;
+
+       return (0);
+}