X-Git-Url: http://git.vrable.net/?a=blobdiff_plain;f=bluesky%2Fbluesky.h;h=1d9f55c30007f403e6a71841b7229a560cd36b3e;hb=afd70a13376f68a96339efcad957c8b41791e707;hp=21fd8551b95c9cc25c5567a548931f3b048f094a;hpb=f6cf25a6403fae7297c8d8913815dbd7a87f4f0b;p=bluesky.git

diff --git a/bluesky/bluesky.h b/bluesky/bluesky.h
index 21fd855..1d9f55c 100644
--- a/bluesky/bluesky.h
+++ b/bluesky/bluesky.h
@@ -17,6 +17,14 @@
 extern "C" {
 #endif
 
+/* Various options to tweak for performance benchmarking purposes. */
+typedef struct {
+    /* Perform all get/put operations synchronously. */
+    int synchronous_stores;
+} BlueSkyOptions;
+
+extern BlueSkyOptions bluesky_options;
+
 /* BlueSky status and error codes.  Various frontends should translate these to
  * the appropriate error code for whatever protocol they implement. */
 typedef enum {
@@ -56,23 +64,6 @@ BlueSkyRCStr *bluesky_crypt_decrypt(BlueSkyRCStr *in, const uint8_t *key);
 
 /* Storage interface.  This presents a key-value store abstraction, and can
  * have multiple implementations: in-memory, on-disk, in-cloud. */
-typedef struct {
-    /* Create a new store instance and return a handle to it. */
-    gpointer (*create)();
-
-    /* Clean up any resources used by this store. */
-    void (*destroy)(gpointer store);
-
-    /* Fetch an item with the given name, or return NULL if not found. */
-    BlueSkyRCStr * (*get)(gpointer store, const gchar *key);
-
-    /* Store an item to the given key name. */
-    void (*put)(gpointer store, const gchar *key, BlueSkyRCStr *val);
-} BlueSkyStoreImplementation;
-
-void bluesky_store_register(const BlueSkyStoreImplementation *impl,
-                            const gchar *name);
-
 struct _BlueSkyStore;
 typedef struct _BlueSkyStore BlueSkyStore;
 
@@ -150,6 +141,14 @@ typedef struct {
      * committed to stable storage. */
     uint64_t change_count, change_commit;
 
+    /* Timestamp for controlling when modified data is flushed to stable
+     * storage.  When an inode is first modified from a clean state, this is
+     * set to the current time.  If the inode is clean, it is set to zero. */
+    int64_t change_time;
+
+    /* Additional state for tracking cache writeback status. */
+    uint64_t change_pending;    /* change_count version currently being committed to storage */
+
     int64_t atime;              /* Microseconds since the Unix epoch */
     int64_t ctime;
     int64_t mtime;
@@ -218,7 +217,6 @@ void bluesky_directory_dump(BlueSkyInode *dir);
 
 void bluesky_block_touch(BlueSkyInode *inode, uint64_t i);
 void bluesky_block_fetch(BlueSkyFS *fs, BlueSkyBlock *block);
-void bluesky_block_flush(BlueSkyFS *fs, BlueSkyBlock *block);
 void bluesky_file_truncate(BlueSkyInode *inode, uint64_t size);
 void bluesky_file_write(BlueSkyInode *inode, uint64_t offset,
                         const char *data, gint len);
@@ -231,6 +229,8 @@ void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum);
 gint bluesky_dirent_compare(gconstpointer a, gconstpointer b,
                             gpointer unused);
 
+void bluesky_flushd_invoke(BlueSkyFS *fs);
+
 #ifdef __cplusplus
 }
 #endif