mdb_put - Online Linux Manual PageSection : 3
Updated : Sat Feb 4 2023
Source : LMDB
NAMEmdb_put − Write Flags
SYNOPSIS
ModulesCopy Flags
Macros#define MDB_NOOVERWRITE 0x10
#define MDB_NODUPDATA 0x20
#define MDB_CURRENT 0x40
#define MDB_RESERVE 0x10000
#define MDB_APPEND 0x20000
#define MDB_APPENDDUP 0x40000
#define MDB_MULTIPLE 0x80000
Variablessize_t MDB_val::mv_size
void * MDB_val::mv_data
unsigned int MDB_stat::ms_psize
unsigned int MDB_stat::ms_depth
size_t MDB_stat::ms_branch_pages
size_t MDB_stat::ms_leaf_pages
size_t MDB_stat::ms_overflow_pages
size_t MDB_stat::ms_entries
void * MDB_envinfo::me_mapaddr
size_t MDB_envinfo::me_mapsize
size_t MDB_envinfo::me_last_pgno
size_t MDB_envinfo::me_last_txnid
unsigned int MDB_envinfo::me_maxreaders
unsigned int MDB_envinfo::me_numreaders
Detailed DescriptionLMDB Command Line Tools The following describes the command line tools that are available for LMDB. • mdb_copy - environment copy tool • mdb_dump - environment export tool • mdb_load - environment import tool • mdb_stat - environment status tool
Macro Definition Documentation
#define MDB_NOOVERWRITE 0x10For put: Don't write if the key already exists.
#define MDB_NODUPDATA 0x20Only for MDB_DUPSORT
For put: don't write if the key and data pair already exist.
For mdb_cursor_del: remove all duplicate data items.
#define MDB_CURRENT 0x40For mdb_cursor_put: overwrite the current key/data pair
#define MDB_RESERVE 0x10000For put: Just reserve space for data, don't copy it. Return a pointer to the reserved space.
#define MDB_APPEND 0x20000Data is being appended, don't split full pages.
#define MDB_APPENDDUP 0x40000Duplicate data is being appended, don't split full pages.
#define MDB_MULTIPLE 0x80000Store multiple data items in one call. Only for MDB_DUPFIXED.
Variable Documentation
size_t MDB_val::mv_sizesize of the data item
void* MDB_val::mv_dataaddress of the data item
unsigned int MDB_stat::ms_psizeSize of a database page. This is currently the same for all databases.
unsigned int MDB_stat::ms_depthDepth (height) of the B-tree
size_t MDB_stat::ms_branch_pagesNumber of internal (non-leaf) pages
size_t MDB_stat::ms_leaf_pagesNumber of leaf pages
size_t MDB_stat::ms_overflow_pagesNumber of overflow pages
size_t MDB_stat::ms_entriesNumber of data items
void* MDB_envinfo::me_mapaddrAddress of map, if fixed
size_t MDB_envinfo::me_mapsizeSize of the data memory map
size_t MDB_envinfo::me_last_pgnoID of the last used page
size_t MDB_envinfo::me_last_txnidID of the last committed transaction
unsigned int MDB_envinfo::me_maxreadersmax reader slots in the environment
unsigned int MDB_envinfo::me_numreadersmax reader slots used in the environment
AuthorGenerated automatically by Doxygen for LMDB from the source code. 0
Johanes Gumabo
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