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ITS#7994 fix prev commit

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Strip docs promising behaviors that we don't promise to hold.
Strip MDB_txnid_t typedef.
This commit is contained in:
Howard Chu 2014-12-05 19:15:41 +00:00
parent b660491d3f
commit c36c167cc4
2 changed files with 6 additions and 11 deletions
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13
libraries/liblmdb/lmdb.h
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@ -226,9 +226,6 @@ typedef struct MDB_env MDB_env;
*/
typedef struct MDB_txn MDB_txn;
/** @brief Unique identifier for an active or recent transaction. */
typedef size_t MDB_txnid_t;
/** @brief A handle for an individual database in the DB environment. */
typedef unsigned int MDB_dbi;
@ -451,7 +448,7 @@ typedef struct MDB_envinfo {
void *me_mapaddr; /**< Address of map, if fixed */
size_t me_mapsize; /**< Size of the data memory map */
size_t me_last_pgno; /**< ID of the last used page */
MDB_txnid_t me_last_txnid; /**< ID of the last committed transaction */
size_t me_last_txnid; /**< ID of the last committed transaction */
unsigned int me_maxreaders; /**< max reader slots in the environment */
unsigned int me_numreaders; /**< max reader slots used in the environment */
} MDB_envinfo;
@ -953,18 +950,16 @@ int mdb_txn_begin(MDB_env *env, MDB_txn *parent, unsigned int flags, MDB_txn **
*/
MDB_env *mdb_txn_env(MDB_txn *txn);
/** @brief Return the transaction's #MDB_txnid_t
/** @brief Return the transaction's ID.
*
* This returns the identifier associated with this transaction. For a
* read-only transaction, this corresponds to the snapshot being read;
* concurrent readers will frequently have the same transaction ID. For
* a write transaction, this is always the snapshot read plus one. When
* a write transaction aborts, the next transaction ID will be reused.
* concurrent readers will frequently have the same transaction ID.
*
* @param[in] txn A transaction handle returned by #mdb_txn_begin()
* @return A transaction ID, valid if input is an active transaction.
*/
MDB_txnid_t mdb_txn_id(MDB_txn *txn);
size_t mdb_txn_id(MDB_txn *txn);
/** @brief Commit all the operations of a transaction into the database.
*

4
libraries/liblmdb/mdb.c
View File

@ -2775,10 +2775,10 @@ mdb_txn_env(MDB_txn *txn)
return txn->mt_env;
}
MDB_txnid_t
size_t
mdb_txn_id(MDB_txn *txn)
{
if(!txn) return (txnid_t)-1;
if(!txn) return 0;
return txn->mt_txnid;
}