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ITS#7485 Document key/data size limits in lmdb.h.

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mdb.c already describes them. The user doc should too.
This commit is contained in:
Hallvard Furuseth 2013-02-19 21:14:23 +01:00
parent ef25056cfb
commit 8ad25001ff
1 changed files with 8 additions and 1 deletions
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9
libraries/liblmdb/lmdb.h
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@ -192,7 +192,14 @@ typedef unsigned int MDB_dbi;
/** @brief Opaque structure for navigating through a database */
typedef struct MDB_cursor MDB_cursor;
/** @brief Generic structure used for passing keys and data in and out of the database. */
/** @brief Generic structure used for passing keys and data in and out
* of the database.
*
* Key sizes must be between 1 and the liblmdb build-time constant
* #MDB_MAXKEYSIZE inclusive. This currently defaults to 511. 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.
*/
typedef struct MDB_val {
size_t mv_size; /**< size of the data item */
void *mv_data; /**< address of the data item */