Add an inode map data structure to track the location of inodes in logs.

[bluesky.git] / bluesky / bluesky.h

diff --git a/bluesky/bluesky.h b/bluesky/bluesky.h
index 820fa12..54e8450 100644 (file)
--- a/bluesky/bluesky.h
+++ b/bluesky/bluesky.h
@@ -33,6 +33,9 @@ typedef struct {
     /* Should frontends handle requests serially or allow operations to proceed
      * in parallel? */
     int sync_frontends;
+
+    /* Target size of the disk cache at the proxy, in kilobytes. */
+    int cache_size;
 } BlueSkyOptions;
 
 extern BlueSkyOptions bluesky_options;
@@ -63,19 +66,19 @@ void bluesky_init(void);
 
 gchar *bluesky_lowercase(const gchar *s);
 
-struct _BlueSkyMmap;
-typedef struct _BlueSkyMmap BlueSkyMmap;
+struct _BlueSkyCacheFile;
+typedef struct _BlueSkyCacheFile BlueSkyCacheFile;
 
 typedef struct {
     gint refcount;
-    BlueSkyMmap *mmap;
+    BlueSkyCacheFile *mmap;
     gchar *data;
     gsize len;
 } BlueSkyRCStr;
 
 BlueSkyRCStr *bluesky_string_new(gpointer data, gsize len);
 BlueSkyRCStr *bluesky_string_new_from_gstring(GString *s);
-BlueSkyRCStr *bluesky_string_new_from_mmap(BlueSkyMmap *mmap,
+BlueSkyRCStr *bluesky_string_new_from_mmap(BlueSkyCacheFile *mmap,
                                            int offset, gsize len);
 void bluesky_string_ref(BlueSkyRCStr *string);
 void bluesky_string_unref(BlueSkyRCStr *string);
@@ -175,6 +178,10 @@ typedef struct {
     /* Mapping of object identifiers (blocks, inodes) to physical location (in
      * the local cache or in the logs in the cloud). */
     GHashTable *locations;
+
+    /* The inode map, which maps inode numbers to the location of the most
+     * recent version. */
+    GSequence *inode_map;
 } BlueSkyFS;
 
 /* Inode number of the root directory. */