Implement new scheme for retaining needed journal segments.

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

diff --git a/bluesky/bluesky-private.h b/bluesky/bluesky-private.h
index 8601228..7652cff 100644 (file)
--- a/bluesky/bluesky-private.h
+++ b/bluesky/bluesky-private.h
@@ -225,6 +225,7 @@ struct _BlueSkyCloudLogState {
     BlueSkyCloudPointer location;
     GList *inode_list;
     GSList *writeback_list;     // Items which are being serialized right now
+    GList *pending_segments;    // Segments which are being uploaded now
 };
 
 gboolean bluesky_cloudlog_equal(gconstpointer a, gconstpointer b);
@@ -266,6 +267,10 @@ struct _BlueSkyLog {
     /* A count of the disk space consumed (in 1024-byte units) by all files
      * tracked by mmap_cache (whether mapped or not, actually). */
     gint disk_used;
+
+    /* The smallest journal sequence number which may still contain data that
+     * must be preserved (since it it not yet in the cloud). */
+    int journal_watermark;
 };
 
 /* An object for tracking log files which are stored locally--either the
@@ -300,6 +305,15 @@ BlueSkyCacheFile *bluesky_cachefile_lookup(BlueSkyFS *fs,
                                            int clouddir, int log_seq);
 void bluesky_cachefile_gc(BlueSkyFS *fs);
 
+/* Used to track log segments that are being written to the cloud. */
+typedef struct {
+    BlueSkyRCStr *data;
+    GSList *items;
+    GMutex *lock;
+    GCond *cond;
+    gboolean complete;
+} SerializedRecord;
+
 #ifdef __cplusplus
 }
 #endif