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

[bluesky.git] / bluesky / bluesky-private.h

diff --git a/bluesky/bluesky-private.h b/bluesky/bluesky-private.h
index d4ec4cd..0245323 100644 (file)
--- a/bluesky/bluesky-private.h
+++ b/bluesky/bluesky-private.h
@@ -3,7 +3,29 @@
  * Copyright (C) 2009  The Regents of the University of California
  * Written by Michael Vrable <mvrable@cs.ucsd.edu>
  *
- * TODO: Licensing
+ * 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.
  */
 
 /* Declarations internal to the BlueSky library.  This header file should not
@@ -25,10 +47,12 @@ extern int bluesky_verbose;
 /* Target cache size levels. */
 extern int bluesky_watermark_low_dirty;
 extern int bluesky_watermark_medium_dirty;
+extern int bluesky_watermark_med2_dirty;
 extern int bluesky_watermark_high_dirty;
 
 extern int bluesky_watermark_low_total;
 extern int bluesky_watermark_medium_total;
+extern int bluesky_watermark_med2_total;
 extern int bluesky_watermark_high_total;
 
 /* TODO: Make this go away entirely. */
@@ -198,7 +222,7 @@ void bluesky_store_add_barrier(BlueSkyStoreAsync *barrier,
 
 void bluesky_inode_start_sync(BlueSkyInode *inode);
 
-void bluesky_block_touch(BlueSkyInode *inode, uint64_t i);
+void bluesky_block_touch(BlueSkyInode *inode, uint64_t i, gboolean preserve);
 void bluesky_block_fetch(BlueSkyInode *inode, BlueSkyBlock *block,
                          BlueSkyStoreAsync *barrier);
 void bluesky_block_flush(BlueSkyInode *inode, BlueSkyBlock *block,
@@ -268,6 +292,10 @@ struct cloudlog_header {
     uint32_t size1, size2, size3;
 } __attribute__((packed));
 
+// Rough size limit for a log segment.  This is not a firm limit and there are
+// no absolute guarantees on the size of a log segment.
+#define LOG_SEGMENT_SIZE (1 << 22)
+
 #define JOURNAL_MAGIC "\nLog"
 #define CLOUDLOG_MAGIC "AgI-"
 #define CLOUDLOG_MAGIC_ENCRYPTED "AgI="     // CLOUDLOG_MAGIC[3] ^= 0x10
@@ -357,6 +385,7 @@ void bluesky_cloudlog_insert_locked(BlueSkyCloudLog *log);
 BlueSkyCloudLog *bluesky_cloudlog_get(BlueSkyFS *fs, BlueSkyCloudID id);
 void bluesky_cloudlog_prefetch(BlueSkyCloudLog *log);
 void bluesky_cloudlog_fetch(BlueSkyCloudLog *log);
+void bluesky_cloudlog_background_fetch(BlueSkyCloudLog *item);
 BlueSkyCloudPointer bluesky_cloudlog_serialize(BlueSkyCloudLog *log,
                                                BlueSkyFS *fs);
 void bluesky_cloudlog_flush(BlueSkyFS *fs);