#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
/* For uint64_t */
#include <stdint.h>
#endif
+#include <ccan/compiler/compiler.h>
/* flags to tdb_store() */
#define TDB_REPLACE 1 /* Unused */
#define TDB_INTERNAL 2 /* don't store on disk */
#define TDB_NOLOCK 4 /* don't do any locking */
#define TDB_NOMMAP 8 /* don't use mmap */
-#define TDB_CONVERT 16 /* convert endian (internal use) */
-#define TDB_BIGENDIAN 32 /* header is big-endian (internal use) */
+#define TDB_CONVERT 16 /* convert endian */
#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 */
-#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};
+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 };
-/* debugging uses one of the following levels */
-enum tdb_debug_level {TDB_DEBUG_FATAL = 0, TDB_DEBUG_ERROR,
- TDB_DEBUG_WARNING, TDB_DEBUG_TRACE};
+/* flags for tdb_summary. Logical or to combine. */
+enum tdb_summary_flags { TDB_SUMMARY_HISTOGRAMS = 1 };
+
+/* 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;
size_t dsize;
} TDB_DATA;
-#ifndef PRINTF_ATTRIBUTE
-#if (__GNUC__ >= 3)
-/** Use gcc attribute to check printf fns. a1 is the 1-based index of
- * the parameter containing the format, and a2 the index of the first
- * argument. Note that some gcc 2.x versions don't handle this
- * properly **/
-#define PRINTF_ATTRIBUTE(a1, a2) __attribute__ ((format (__printf__, a1, a2)))
-#else
-#define PRINTF_ATTRIBUTE(a1, a2)
-#endif
-#endif
-
struct tdb_context;
/* FIXME: Make typesafe */
-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);
+typedef int (*tdb_traverse_func)(struct tdb_context *, TDB_DATA, TDB_DATA, void *);
enum tdb_attribute_type {
TDB_ATTRIBUTE_LOG = 0,
- TDB_ATTRIBUTE_HASH = 1
+ TDB_ATTRIBUTE_HASH = 1,
+ TDB_ATTRIBUTE_SEED = 2,
+ TDB_ATTRIBUTE_STATS = 3
};
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;
};
+struct tdb_attribute_seed {
+ struct tdb_attribute_base base; /* .attr = 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,
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(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);
+
extern struct tdb_data tdb_null;
#ifdef __cplusplus
projects / ccan / blobdiff