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Tweak comments/readability.

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Show MDB_PERSISTENT/MDB_VALID/DB_VALID relationship.
mdb_txn_renew0(): Remove obsolete "cannot fail" comment.
This commit is contained in:
Hallvard Furuseth 2013-04-18 08:00:03 +02:00
parent 272e4e98ad
commit 9dd61011fe
1 changed files with 4 additions and 6 deletions
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10
libraries/liblmdb/mdb.c
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@ -748,7 +748,8 @@ typedef struct MDB_db {
} MDB_db;
/** mdb_dbi_open flags */
#define PERSISTENT_FLAGS 0x7fff
#define MDB_VALID 0x8000 /**< DB handle is valid, for me_dbflags */
#define PERSISTENT_FLAGS (0xffff & ~(MDB_VALID))
#define VALID_FLAGS (MDB_REVERSEKEY|MDB_DUPSORT|MDB_INTEGERKEY|MDB_DUPFIXED|\
MDB_INTEGERDUP|MDB_REVERSEDUP|MDB_CREATE)
@ -832,8 +833,7 @@ struct MDB_txn {
#define DB_DIRTY 0x01 /**< DB was written in this txn */
#define DB_STALE 0x02 /**< DB record is older than txnID */
#define DB_NEW 0x04 /**< DB handle opened in this txn */
#define DB_VALID 0x08 /**< DB handle is valid */
#define MDB_VALID 0x8000 /**< DB handle is valid, for me_dbflags */
#define DB_VALID 0x08 /**< DB handle is valid, see also #MDB_VALID */
/** @} */
/** In write txns, array of cursors for each DB */
MDB_cursor **mt_cursors;
@ -1772,9 +1772,7 @@ mdb_txn_reset0(MDB_txn *txn);
/** Common code for #mdb_txn_begin() and #mdb_txn_renew().
* @param[in] txn the transaction handle to initialize
* @return 0 on success, non-zero on failure. This can only
* fail for read-only transactions, and then only if the
* reader table is full.
* @return 0 on success, non-zero on failure.
*/
static int
mdb_txn_renew0(MDB_txn *txn)