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mdbx: clarify notes about custom comparators usage.

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Leonid Yuriev 2021-11-26 23:46:50 +03:00
parent 0cc3aa3af8
commit e912f87b2a
1 changed files with 7 additions and 3 deletions
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mdbx.h
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@ -3513,10 +3513,14 @@ LIBMDBX_API int mdbx_canary_get(const MDBX_txn *txn, MDBX_canary *canary);
* The reasons to not using custom comparators are: * The reasons to not using custom comparators are:
* - The order of records could not be validated without your code. * - The order of records could not be validated without your code.
* So `mdbx_chk` utility will reports "wrong order" errors * So `mdbx_chk` utility will reports "wrong order" errors
* and the `-i` option is required to ignore ones. * and the `-i` option is required to suppress ones.
* - A records could not be ordered or sorted without your code. * - A records could not be ordered or sorted without your code.
* So mdbx_load utility should be used with `-a` option to preserve * So `mdbx_load` utility should be used with `-a` option to preserve
* input data order. */ * input data order.
* - However, the custom comparators feature will never be removed.
* You have been warned but still can use custom comparators knowing
* about the issues noted above. In this case you should ignore `deprecated`
* warnings or define `MDBX_DEPRECATED` macro to empty to avoid ones. */
typedef int(MDBX_cmp_func)(const MDBX_val *a, typedef int(MDBX_cmp_func)(const MDBX_val *a,
const MDBX_val *b) MDBX_CXX17_NOEXCEPT; const MDBX_val *b) MDBX_CXX17_NOEXCEPT;