libmdbx/src/bits.md

N	MASK	ENV	TXN	DB	PUT	DBI	NODE	PAGE	MRESIZE
0	0000 0001	ALLOC_RSRV	TXN_FINISHED			DBI_DIRTY	F_BIGDATA	P_BRANCH
1	0000 0002	ALLOC_UNIMP	TXN_ERROR	REVERSEKEY	F_SUBDATA	DBI_STALE	F_SUBDATA	P_LEAF
2	0000 0004	ALLOC_COLSC	TXN_DIRTY	DUPSORT		DBI_FRESH	F_DUPDATA	P_OVERFLOW
3	0000 0008	ALLOC_SSCAN	TXN_SPILLS	INTEGERKEY		DBI_CREAT		P_META
4	0000 0010	ALLOC_FIFO	TXN_HAS_CHILD	DUPFIXED	NOOVERWRITE	DBI_VALID		P_BAD
5	0000 0020		TXN_DRAINED_GC	INTEGERDUP	NODUPDATA			P_LEAF2
6	0000 0040			REVERSEDUP	CURRENT	DBI_OLDEN		P_SUBP
7	0000 0080				ALLDUPS	DBI_LINDO
8	0000 0100	_MAY_MOVE							<=
9	0000 0200	_MAY_UNMAP							<=
10	0000 0400
11	0000 0800
12	0000 1000
13	0000 2000	VALIDATION						P_SPILLED
14	0000 4000	NOSUBDIR						P_LOOSE
15	0000 8000			DB_VALID				P_FROZEN
16	0001 0000	SAFE_NOSYNC	TXN_NOSYNC		RESERVE		RESERVE
17	0002 0000	RDONLY	TXN_RDONLY		APPEND		APPEND		<=
18	0004 0000	NOMETASYNC	TXN_NOMETASYNC	CREATE	APPENDDUP
19	0008 0000	WRITEMAP	<=		MULTIPLE				<=
20	0010 0000	UTTERLY							<=
21	0020 0000	NOSTICKYTHR	<=
22	0040 0000	EXCLUSIVE
23	0080 0000	NORDAHEAD
24	0100 0000	NOMEMINIT	TXN_PREPARE
25	0200 0000	COALESCE
26	0400 0000	LIFORECLAIM
27	0800 0000	PAGEPERTURB
28	1000 0000	ENV_TXKEY	TXN_TRY
29	2000 0000	ENV_ACTIVE
30	4000 0000	ACCEDE	SHRINK_ALLOWED	DB_ACCEDE
31	8000 0000	FATAL_ERROR