Add proper per-file copyright notices/licenses and top-level license.

[bluesky.git] / logbench / logbench.c

diff --git a/logbench/logbench.c b/logbench/logbench.c
index 6f3a858..8ab082c 100644 (file)
--- a/logbench/logbench.c
+++ b/logbench/logbench.c
@@ -1,3 +1,33 @@
+/* Blue Sky: File Systems in the Cloud
+ *
+ * Copyright (C) 2010  The Regents of the University of California
+ * Written by Michael Vrable <mvrable@cs.ucsd.edu>
+ *
+ * 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. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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.
+ */
+
 /* A simple tool for benchmarking various logging strategies.
  *
  * We want to log a series of key/value pairs.  Approaches that we try include:
@@ -84,14 +114,14 @@ void writebuf(int fd, const char *buf, size_t len)
 }
 
 /************************ Direct-to-filesystem logging ***********************/
-static int dirfd = -1;
+static int dir_fd = -1;
 
 gpointer fslog_thread(gpointer d)
 {
     while (TRUE) {
         struct item *item = get_item();
 
-        int fd = openat(dirfd, item->key, O_CREAT|O_WRONLY|O_TRUNC, 0666);
+        int fd = openat(dir_fd, item->key, O_CREAT|O_WRONLY|O_TRUNC, 0666);
         g_assert(fd >= 0);
 
         writebuf(fd, item->data, item->len);
@@ -99,7 +129,7 @@ gpointer fslog_thread(gpointer d)
         finish_item(item);
 
         fsync(fd);
-        fsync(dirfd);
+        fsync(dir_fd);
         close(fd);
     }
 
@@ -108,8 +138,8 @@ gpointer fslog_thread(gpointer d)
 
 void launch_fslog()
 {
-    dirfd = open(".", O_DIRECTORY);
-    g_assert(dirfd >= 0);
+    dir_fd = open(".", O_DIRECTORY);
+    g_assert(dir_fd >= 0);
 
     for (int i = 0; i < 1; i++)
         g_thread_create(fslog_thread, NULL, FALSE, NULL);