gchar *bluesky_lowercase(const gchar *s);
-/* Reference-counted blocks of memory, used for passing data in and out of
- * storage backends and in other places. */
+struct _BlueSkyMmap;
+typedef struct _BlueSkyMmap BlueSkyMmap;
+
typedef struct {
gint refcount;
+ BlueSkyMmap *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,
+ int offset, gsize len);
void bluesky_string_ref(BlueSkyRCStr *string);
void bluesky_string_unref(BlueSkyRCStr *string);
BlueSkyRCStr *bluesky_string_dup(BlueSkyRCStr *string);
struct _BlueSkyCloudLogState;
typedef struct _BlueSkyCloudLogState BlueSkyCloudLogState;
+struct _BlueSkyCloudLog;
+typedef struct _BlueSkyCloudLog BlueSkyCloudLog;
+
void bluesky_store_init();
BlueSkyStore *bluesky_store_new(const gchar *type);
void bluesky_store_free(BlueSkyStore *store);
/* Last access time to this inode, for controlling cache evictions. */
int64_t access_time;
- /* Additional state for tracking cache writeback status. */
- uint64_t change_pending; /* change_count version currently being committed to storage */
+ /* Version of the object last serialized and committed to storage. */
+ BlueSkyCloudLog *committed_item;
/* Pointers to the linked-list elements for this inode in the accessed and
* dirty linked lists. We re-use the GList structure, using ->next to
#define BLUESKY_MAX_FILE_SIZE (BLUESKY_BLOCK_SIZE << 24)
typedef enum {
BLUESKY_BLOCK_ZERO = 0, /* Data is all zeroes, not explicitly stored */
- BLUESKY_BLOCK_REF = 1, /* Reference to key/value store, not cached */
- BLUESKY_BLOCK_CACHED = 2, /* Data is cached in memory, clean */
- BLUESKY_BLOCK_DIRTY = 3, /* Data needs to be committed to store */
+ BLUESKY_BLOCK_REF = 1, /* Reference to cloud log item, data clean */
+ BLUESKY_BLOCK_DIRTY = 2, /* Data needs to be committed to store */
} BlueSkyBlockType;
typedef struct {
BlueSkyBlockType type;
- gchar *ref; /* Name of data block in the backing store */
- BlueSkyRCStr *data; /* Pointer to data in memory if cached */
+ BlueSkyCloudLog *ref; /* if REF: cloud log entry with data */
+ BlueSkyRCStr *dirty; /* if DIRTY: raw data in memory */
} BlueSkyBlock;
BlueSkyFS *bluesky_init_fs(gchar *name, BlueSkyStore *store);
void bluesky_file_read(BlueSkyInode *inode, uint64_t offset,
char *buf, gint len);
-void bluesky_inode_flush(BlueSkyFS *fs, BlueSkyInode *inode);
void bluesky_inode_fetch(BlueSkyFS *fs, uint64_t inum);
gint bluesky_dirent_compare(gconstpointer a, gconstpointer b,