#include <ccan/tdb2/tdb2.h>
#include <ccan/likely/likely.h>
#include <ccan/compiler/compiler.h>
+#include <ccan/cast/cast.h>
#if HAVE_BYTESWAP_H
#include <byteswap.h>
#endif
/* Packing errors into pointers and v.v. */
#define TDB_PTR_IS_ERR(ptr) \
- unlikely((void *)(ptr) >= (void *)(long)TDB_ERR_LAST)
+ unlikely((unsigned long)(ptr) >= (unsigned long)TDB_ERR_LAST)
#define TDB_PTR_ERR(p) ((enum TDB_ERROR)(long)(p))
#define TDB_ERR_PTR(err) ((void *)(long)(err))
uint64_t features_used; /* Features all writers understand */
uint64_t features_offered; /* Features offered */
- tdb_off_t reserved[24];
+ uint64_t seqnum; /* Sequence number for TDB_SEQNUM */
+
+ tdb_off_t reserved[23];
/* Top level hash table. */
tdb_off_t hashtable[1ULL << TDB_TOPLEVEL_HASH_BITS];
};
struct tdb_lock {
+ struct tdb_context *owner;
uint32_t off;
uint32_t count;
uint32_t ltype;
/* Single list of all TDBs, to detect multiple opens. */
struct tdb_file *next;
+ /* How many are sharing us? */
+ unsigned int refcnt;
+
/* Mmap (if any), or malloc (for TDB_INTERNAL). */
void *map_ptr;
/* Direct access information */
struct tdb_access_hdr *access;
+ /* Last error we returned. */
+ enum TDB_ERROR last_error;
+
/* The actual file information */
struct tdb_file *file;
};
enum TDB_ERROR tdb_read_convert(struct tdb_context *tdb, tdb_off_t off,
void *rec, size_t len);
+/* Bump the seqnum (caller checks for tdb->flags & TDB_SEQNUM) */
+void tdb_inc_seqnum(struct tdb_context *tdb);
+
/* Adds a stat, if it's in range. */
void add_stat_(struct tdb_context *tdb, uint64_t *stat, size_t val);
#define add_stat(tdb, statname, val) \
tdb_off_t hash_lock,
tdb_len_t hash_range, int ltype);
+/* For closing the file. */
+void tdb_unlock_all(struct tdb_context *tdb);
+
/* Lock/unlock a particular free bucket. */
enum TDB_ERROR tdb_lock_free_bucket(struct tdb_context *tdb, tdb_off_t b_off,
enum tdb_lock_flags waitflag);