X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftdb2%2Ftdb2.h;h=5e354dfe9b5d562603d474dacef0e771de53cefe;hp=ee20a28d36f5a85791e8d1cc1c333d23db597b17;hb=52c4843176ce73484dd405261d13048bcd1b85e5;hpb=a40b318e7a07a452ae7456053727bd11b2fa49b4

diff --git a/ccan/tdb2/tdb2.h b/ccan/tdb2/tdb2.h
index ee20a28d..5e354dfe 100644
--- a/ccan/tdb2/tdb2.h
+++ b/ccan/tdb2/tdb2.h
@@ -1,17 +1,17 @@
 #ifndef CCAN_TDB2_H
 #define CCAN_TDB2_H
 
-/* 
+/*
    Unix SMB/CIFS implementation.
 
    trivial database library
 
    Copyright (C) Andrew Tridgell 1999-2004
-   
+
      ** NOTE! The following LGPL license applies to the tdb
      ** library. This does NOT imply that all of Samba is released
      ** under the LGPL
-   
+
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
@@ -57,19 +57,17 @@ extern "C" {
 #define TDB_NOSYNC   64 /* don't use synchronous transactions */
 #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 */
 
 /* error codes */
-enum TDB_ERROR {TDB_SUCCESS=0, TDB_ERR_CORRUPT, TDB_ERR_IO, TDB_ERR_LOCK, 
+enum TDB_ERROR {TDB_SUCCESS=0, TDB_ERR_CORRUPT, TDB_ERR_IO, TDB_ERR_LOCK,
 		TDB_ERR_OOM, TDB_ERR_EXISTS, TDB_ERR_NOEXIST,
-		TDB_ERR_EINVAL, TDB_ERR_RDONLY, TDB_ERR_NESTING };
+		TDB_ERR_EINVAL, TDB_ERR_RDONLY };
 
 /* 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, 
-		      TDB_DEBUG_WARNING, TDB_DEBUG_TRACE};
+/* logging uses one of the following levels */
+enum tdb_log_level {TDB_LOG_ERROR = 0, TDB_LOG_USE_ERROR, TDB_LOG_WARNING};
 
 typedef struct tdb_data {
 	unsigned char *dptr;
@@ -80,14 +78,12 @@ 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_FMT(4, 5);
-typedef uint64_t (*tdb_hashfn_t)(const void *key, size_t len, uint64_t seed,
-				 void *priv);
 
 enum tdb_attribute_type {
 	TDB_ATTRIBUTE_LOG = 0,
 	TDB_ATTRIBUTE_HASH = 1,
-	TDB_ATTRIBUTE_SEED = 2
+	TDB_ATTRIBUTE_SEED = 2,
+	TDB_ATTRIBUTE_STATS = 3
 };
 
 struct tdb_attribute_base {
@@ -97,13 +93,17 @@ struct tdb_attribute_base {
 
 struct tdb_attribute_log {
 	struct tdb_attribute_base base; /* .attr = TDB_ATTRIBUTE_LOG */
-	tdb_logfn_t log_fn;
+	void (*log_fn)(struct tdb_context *tdb,
+		       enum tdb_log_level level,
+		       void *log_private,
+		       const char *message);
 	void *log_private;
 };
 
 struct tdb_attribute_hash {
 	struct tdb_attribute_base base; /* .attr = TDB_ATTRIBUTE_HASH */
-	tdb_hashfn_t hash_fn;
+	uint64_t (*hash_fn)(const void *key, size_t len, uint64_t seed,
+			    void *priv);
 	void *hash_private;
 };
 
@@ -112,11 +112,39 @@ struct tdb_attribute_seed {
 	uint64_t seed;
 };
 
+struct tdb_attribute_stats {
+	struct tdb_attribute_base base; /* .attr = TDB_ATTRIBUTE_STATS */
+	size_t size; /* = sizeof(struct tdb_attribute_stats) */
+	uint64_t allocs;
+	uint64_t   alloc_subhash;
+	uint64_t   alloc_chain;
+	uint64_t   alloc_bucket_exact;
+	uint64_t   alloc_bucket_max;
+	uint64_t   alloc_leftover;
+	uint64_t   alloc_coalesce_tried;
+	uint64_t     alloc_coalesce_lockfail;
+	uint64_t     alloc_coalesce_race;
+	uint64_t     alloc_coalesce_succeeded;
+	uint64_t        alloc_coalesce_num_merged;
+	uint64_t compares;
+	uint64_t   compare_wrong_bucket;
+	uint64_t   compare_wrong_offsetbits;
+	uint64_t   compare_wrong_keylen;
+	uint64_t   compare_wrong_rechash;
+	uint64_t   compare_wrong_keycmp;
+	uint64_t expands;
+	uint64_t frees;
+	uint64_t locks;
+	uint64_t    lock_lowlevel;
+	uint64_t    lock_nonblock;
+};
+
 union tdb_attribute {
 	struct tdb_attribute_base base;
 	struct tdb_attribute_log log;
 	struct tdb_attribute_hash hash;
 	struct tdb_attribute_seed seed;
+	struct tdb_attribute_stats stats;
 };
 		
 struct tdb_context *tdb_open(const char *name, int tdb_flags,
@@ -139,8 +167,13 @@ 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);
+enum TDB_ERROR tdb_error(const struct tdb_context *tdb);
+const char *tdb_errorstr(const struct tdb_context *tdb);
+
+int tdb_transaction_start(struct tdb_context *tdb);
+void tdb_transaction_cancel(struct tdb_context *tdb);
+int tdb_transaction_prepare_commit(struct tdb_context *tdb);
+int tdb_transaction_commit(struct tdb_context *tdb);
 
 char *tdb_summary(struct tdb_context *tdb, enum tdb_summary_flags flags);