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mdbx: add mdbx_dbi_dupsort_depthmask().

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Change-Id: Ib056663f26baea517d6f2b9d58cd64c643619ef9
This commit is contained in:
Leonid Yuriev
2020-05-23 15:10:51 +03:00
parent 4dc7f0cb4b
commit 5cc1cb3f87
2 changed files with 65 additions and 0 deletions
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15
mdbx.h
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@@ -2716,6 +2716,21 @@ __inline uint32_t mdbx_key_from_int32(const int32_t i32) {
LIBMDBX_API int mdbx_dbi_stat(MDBX_txn *txn, MDBX_dbi dbi, MDBX_stat *stat,
size_t bytes);
/* Retrieve depth (bitmask) information of nested dupsort (multi-value) B+trees
* for given database.
*
* [in] txn A transaction handle returned by mdbx_txn_begin().
* [in] dbi A database handle returned by mdbx_dbi_open().
* [out] mask The address of an uint32_t value where the bitmask
* will be stored.
*
* Returns A non-zero error value on failure and 0 on success, some
* possible errors are:
* - MDBX_EINVAL = an invalid parameter was specified.
* - MDBX_RESULT_TRUE = the dbi isn't a dupsort (multi-value) database. */
LIBMDBX_API int mdbx_dbi_dupsort_depthmask(MDBX_txn *txn, MDBX_dbi dbi,
uint32_t *mask);
/* Retrieve the DB flags and status for a database handle.
*
* [in] txn A transaction handle returned by mdbx_txn_begin().