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mdbx: использование const MDBX_txn где это возможно в API.

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Леонид Юрьев (Leonid Yuriev)
2023-10-14 09:04:06 +03:00
parent 0e4c6d61a4
commit 04511a7a99
3 changed files with 42 additions and 39 deletions
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26
mdbx.h
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@@ -4291,8 +4291,8 @@ mdbx_int64_from_key(const MDBX_val);
* \retval MDBX_THREAD_MISMATCH Given transaction is not owned
* by current thread.
* \retval MDBX_EINVAL An invalid parameter was specified. */
LIBMDBX_API int mdbx_dbi_stat(MDBX_txn *txn, MDBX_dbi dbi, MDBX_stat *stat,
size_t bytes);
LIBMDBX_API int mdbx_dbi_stat(const MDBX_txn *txn, MDBX_dbi dbi,
MDBX_stat *stat, size_t bytes);
/** \brief Retrieve depth (bitmask) information of nested dupsort (multi-value)
* B+trees for given database.
@@ -4309,7 +4309,7 @@ LIBMDBX_API int mdbx_dbi_stat(MDBX_txn *txn, MDBX_dbi dbi, MDBX_stat *stat,
* by current thread.
* \retval MDBX_EINVAL An invalid parameter was specified.
* \retval 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,
LIBMDBX_API int mdbx_dbi_dupsort_depthmask(const MDBX_txn *txn, MDBX_dbi dbi,
uint32_t *mask);
/** \brief DBI state bits returted by \ref mdbx_dbi_flags_ex()
@@ -4341,13 +4341,13 @@ DEFINE_ENUM_FLAG_OPERATORS(MDBX_dbi_state_t)
* \param [out] state Address where the state will be returned.
*
* \returns A non-zero error value on failure and 0 on success. */
LIBMDBX_API int mdbx_dbi_flags_ex(MDBX_txn *txn, MDBX_dbi dbi, unsigned *flags,
unsigned *state);
LIBMDBX_API int mdbx_dbi_flags_ex(const MDBX_txn *txn, MDBX_dbi dbi,
unsigned *flags, unsigned *state);
/** \brief The shortcut to calling \ref mdbx_dbi_flags_ex() with `state=NULL`
* for discarding it result.
* \ingroup c_statinfo */
LIBMDBX_INLINE_API(int, mdbx_dbi_flags,
(MDBX_txn * txn, MDBX_dbi dbi, unsigned *flags)) {
(const MDBX_txn *txn, MDBX_dbi dbi, unsigned *flags)) {
unsigned state;
return mdbx_dbi_flags_ex(txn, dbi, flags, &state);
}
@@ -4423,7 +4423,7 @@ LIBMDBX_API int mdbx_drop(MDBX_txn *txn, MDBX_dbi dbi, bool del);
* by current thread.
* \retval MDBX_NOTFOUND The key was not in the database.
* \retval MDBX_EINVAL An invalid parameter was specified. */
LIBMDBX_API int mdbx_get(MDBX_txn *txn, MDBX_dbi dbi, const MDBX_val *key,
LIBMDBX_API int mdbx_get(const MDBX_txn *txn, MDBX_dbi dbi, const MDBX_val *key,
MDBX_val *data);
/** \brief Get items from a database
@@ -4456,7 +4456,7 @@ LIBMDBX_API int mdbx_get(MDBX_txn *txn, MDBX_dbi dbi, const MDBX_val *key,
* by current thread.
* \retval MDBX_NOTFOUND The key was not in the database.
* \retval MDBX_EINVAL An invalid parameter was specified. */
LIBMDBX_API int mdbx_get_ex(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key,
LIBMDBX_API int mdbx_get_ex(const MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key,
MDBX_val *data, size_t *values_count);
/** \brief Get equal or great item from a database.
@@ -4487,7 +4487,7 @@ LIBMDBX_API int mdbx_get_ex(MDBX_txn *txn, MDBX_dbi dbi, MDBX_val *key,
* by current thread.
* \retval MDBX_NOTFOUND The key was not in the database.
* \retval MDBX_EINVAL An invalid parameter was specified. */
LIBMDBX_API int mdbx_get_equal_or_great(MDBX_txn *txn, MDBX_dbi dbi,
LIBMDBX_API int mdbx_get_equal_or_great(const MDBX_txn *txn, MDBX_dbi dbi,
MDBX_val *key, MDBX_val *data);
/** \brief Store items into a database.
@@ -4729,7 +4729,7 @@ mdbx_cursor_get_userctx(const MDBX_cursor *cursor);
* \retval MDBX_THREAD_MISMATCH Given transaction is not owned
* by current thread.
* \retval MDBX_EINVAL An invalid parameter was specified. */
LIBMDBX_API int mdbx_cursor_bind(MDBX_txn *txn, MDBX_cursor *cursor,
LIBMDBX_API int mdbx_cursor_bind(const MDBX_txn *txn, MDBX_cursor *cursor,
MDBX_dbi dbi);
/** \brief Unbind cursor from a transaction.
@@ -4784,7 +4784,7 @@ LIBMDBX_API int mdbx_cursor_unbind(MDBX_cursor *cursor);
* \retval MDBX_THREAD_MISMATCH Given transaction is not owned
* by current thread.
* \retval MDBX_EINVAL An invalid parameter was specified. */
LIBMDBX_API int mdbx_cursor_open(MDBX_txn *txn, MDBX_dbi dbi,
LIBMDBX_API int mdbx_cursor_open(const MDBX_txn *txn, MDBX_dbi dbi,
MDBX_cursor **cursor);
/** \brief Close a cursor handle.
@@ -4848,7 +4848,7 @@ LIBMDBX_API int mdbx_txn_release_all_cursors(const MDBX_txn *txn, bool unbind);
* \retval MDBX_EINVAL An invalid parameter was specified.
* \retval MDBX_BAD_DBI The cursor was not bound to a DBI-handle
* or such a handle became invalid. */
LIBMDBX_API int mdbx_cursor_renew(MDBX_txn *txn, MDBX_cursor *cursor);
LIBMDBX_API int mdbx_cursor_renew(const MDBX_txn *txn, MDBX_cursor *cursor);
/** \brief Return the cursor's transaction handle.
* \ingroup c_cursors
@@ -5227,7 +5227,7 @@ LIBMDBX_API int mdbx_estimate_move(const MDBX_cursor *cursor, MDBX_val *key,
* \param [out] distance_items A pointer to store range estimation result.
*
* \returns A non-zero error value on failure and 0 on success. */
LIBMDBX_API int mdbx_estimate_range(MDBX_txn *txn, MDBX_dbi dbi,
LIBMDBX_API int mdbx_estimate_range(const MDBX_txn *txn, MDBX_dbi dbi,
MDBX_val *begin_key, MDBX_val *begin_data,
MDBX_val *end_key, MDBX_val *end_data,
ptrdiff_t *distance_items);