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mdbx: add mdbx_txn_flags().

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This commit is contained in:
Leo Yuriev 2018-03-19 17:03:41 +03:00
parent d63c2484fe
commit a2ec7f2be1
2 changed files with 16 additions and 0 deletions
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9
mdbx.h
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@ -982,6 +982,15 @@ LIBMDBX_API int mdbx_txn_begin(MDBX_env *env, MDBX_txn *parent, unsigned flags,
* [in] txn A transaction handle returned by mdbx_txn_begin() */ * [in] txn A transaction handle returned by mdbx_txn_begin() */
LIBMDBX_API MDBX_env *mdbx_txn_env(MDBX_txn *txn); LIBMDBX_API MDBX_env *mdbx_txn_env(MDBX_txn *txn);
/* Return the transaction's flags.
*
* This returns the flags associated with this transaction.
*
* [in] txn A transaction handle returned by mdbx_txn_begin()
*
* Returns A transaction flags, valid if input is an active transaction. */
LIBMDBX_API int mdbx_txn_flags(MDBX_txn *txn);
/* Return the transaction's ID. /* Return the transaction's ID.
* *
* This returns the identifier associated with this transaction. For a * This returns the identifier associated with this transaction. For a

7
src/mdbx.c
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@ -2987,6 +2987,13 @@ uint64_t mdbx_txn_id(MDBX_txn *txn) {
return txn->mt_txnid; return txn->mt_txnid;
} }
int mdbx_txn_flags(MDBX_txn *txn) {
if (unlikely(!txn || txn->mt_signature != MDBX_MT_SIGNATURE))
return -1;
return txn->mt_flags;
}
/* Export or close DBI handles opened in this txn. */ /* Export or close DBI handles opened in this txn. */
static void mdbx_dbis_update(MDBX_txn *txn, int keep) { static void mdbx_dbis_update(MDBX_txn *txn, int keep) {
MDBX_dbi n = txn->mt_numdbs; MDBX_dbi n = txn->mt_numdbs;