tdb2: tdb_summary() implementation for tdb2.

[ccan] / ccan / tdb2 / tdb2.h

diff --git a/ccan/tdb2/tdb2.h b/ccan/tdb2/tdb2.h
index a33022a8f5033ad52d7ee20c9e2bb0397c101201..5e74bfe7883e48e7f1e52e1b5d1696d1ebc433fe 100644 (file)
--- a/ccan/tdb2/tdb2.h
+++ b/ccan/tdb2/tdb2.h
@@ -57,13 +57,14 @@ extern "C" {
 #define TDB_SEQNUM   128 /* maintain a sequence number */
 #define TDB_VOLATILE   256 /* Activate the per-hashchain freelist, default 5 */
 #define TDB_ALLOW_NESTING 512 /* Allow transactions to nest */
-#define TDB_DISALLOW_NESTING 1024 /* Disallow transactions to nest */
 
 /* error codes */
 enum TDB_ERROR {TDB_SUCCESS=0, TDB_ERR_CORRUPT, TDB_ERR_IO, TDB_ERR_LOCK, 
-               TDB_ERR_OOM, TDB_ERR_EXISTS, TDB_ERR_NOLOCK, TDB_ERR_LOCK_TIMEOUT,
-               TDB_ERR_NOEXIST, TDB_ERR_EINVAL, TDB_ERR_RDONLY,
-               TDB_ERR_NESTING};
+               TDB_ERR_OOM, TDB_ERR_EXISTS, TDB_ERR_NOEXIST,
+               TDB_ERR_EINVAL, TDB_ERR_RDONLY, TDB_ERR_NESTING };
+
+/* flags for tdb_summary. Logical or to combine. */
+enum tdb_summary_flags { TDB_SUMMARY_HISTOGRAMS = 1 };
 
 /* debugging uses one of the following levels */
 enum tdb_debug_level {TDB_DEBUG_FATAL = 0, TDB_DEBUG_ERROR, 
@@ -89,6 +90,7 @@ typedef struct tdb_data {
 struct tdb_context;
 
 /* FIXME: Make typesafe */
+typedef int (*tdb_traverse_func)(struct tdb_context *, TDB_DATA, TDB_DATA, void *);
 typedef void (*tdb_logfn_t)(struct tdb_context *, enum tdb_debug_level, void *priv, const char *, ...) PRINTF_ATTRIBUTE(4, 5);
 typedef uint64_t (*tdb_hashfn_t)(const void *key, size_t len, uint64_t seed,
                                 void *priv);
@@ -128,11 +130,24 @@ struct tdb_context *tdb_open(const char *name, int tdb_flags,
 struct tdb_data tdb_fetch(struct tdb_context *tdb, struct tdb_data key);
 int tdb_delete(struct tdb_context *tdb, struct tdb_data key);
 int tdb_store(struct tdb_context *tdb, struct tdb_data key, struct tdb_data dbuf, int flag);
+int tdb_append(struct tdb_context *tdb, struct tdb_data key, struct tdb_data dbuf);
+int tdb_chainlock(struct tdb_context *tdb, TDB_DATA key);
+int tdb_chainunlock(struct tdb_context *tdb, TDB_DATA key);
+int64_t tdb_traverse(struct tdb_context *tdb, tdb_traverse_func fn, void *p);
+int64_t tdb_traverse_read(struct tdb_context *tdb,
+                         tdb_traverse_func fn, void *p);
+TDB_DATA tdb_firstkey(struct tdb_context *tdb);
+TDB_DATA tdb_nextkey(struct tdb_context *tdb, TDB_DATA key);
 int tdb_close(struct tdb_context *tdb);
 int tdb_check(struct tdb_context *tdb,
              int (*check)(TDB_DATA key, TDB_DATA data, void *private_data),
              void *private_data);
 
+enum TDB_ERROR tdb_error(struct tdb_context *tdb);
+const char *tdb_errorstr(struct tdb_context *tdb);
+
+char *tdb_summary(struct tdb_context *tdb, enum tdb_summary_flags flags);
+
 extern struct tdb_data tdb_null;
 
 #ifdef  __cplusplus