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MDB_val Struct Reference

Generic structure used for passing keys and data in and out of the database. More...

#include <lmdb.h>

Collaboration diagram for MDB_val:

Public Attributes

size_t mv_size
 
void * mv_data
 

Detailed Description

Generic structure used for passing keys and data in and out of the database.

Values returned from the database are valid only until a subsequent update operation, or the end of the transaction. Do not modify or free them, they commonly point into the database itself.

Key sizes must be between 1 and mdb_env_get_maxkeysize() inclusive. The same applies to data sizes in databases with the MDB_DUPSORT flag. Other data items can in theory be from 0 to 0xffffffff bytes long.

Definition at line 286 of file lmdb.h.

Member Data Documentation

◆ mv_data

void* MDB_val::mv_data

address of the data item

Definition at line 288 of file lmdb.h.

◆ mv_size

size_t MDB_val::mv_size

size of the data item

Definition at line 287 of file lmdb.h.


The documentation for this struct was generated from the following file: