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mdbx: использование const MDBX_txn где это возможно в API (backport).

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Леонид Юрьев (Leonid Yuriev)
2023-10-14 09:04:06 +03:00
parent ed8c7ead4e
commit 7eb2f4130e
3 changed files with 42 additions and 39 deletions
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26
mdbx.h
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@@ -4293,8 +4293,8 @@ 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.
@@ -4311,7 +4311,7 @@ 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()
@@ -4343,13 +4343,13 @@ 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);
}
@@ -4425,7 +4425,7 @@ 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
@@ -4458,7 +4458,7 @@ 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.
@@ -4489,7 +4489,7 @@ 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.
@@ -4731,7 +4731,7 @@ 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 Create a cursor handle for the specified transaction and DBI handle.
@@ -4764,7 +4764,7 @@ LIBMDBX_API int mdbx_cursor_bind(MDBX_txn *txn, 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.
@@ -4807,7 +4807,7 @@ LIBMDBX_API void mdbx_cursor_close(MDBX_cursor *cursor);
* \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
@@ -5186,7 +5186,7 @@ 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);