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lmdb: ITS#8117 Fix MDB_INTEGERDUP keysize doc.

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Change-Id: I7cf7c456f35fe9c5449a37ad9130864617197726
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Hallvard Furuseth 2015-05-19 20:33:35 +02:00 committed by Leo Yuriev
parent 104312d15e
commit 476c5b02ea
2 changed files with 11 additions and 8 deletions
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14
lmdb.h
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@ -297,12 +297,12 @@ typedef void (MDB_rel_func)(MDB_val *item, void *oldptr, void *newptr, void *rel
#define MDB_REVERSEKEY 0x02 #define MDB_REVERSEKEY 0x02
/** use sorted duplicates */ /** use sorted duplicates */
#define MDB_DUPSORT 0x04 #define MDB_DUPSORT 0x04
/** numeric keys in native byte order. /** numeric keys in native byte order: either unsigned int or size_t.
* The keys must all be of the same size. */ * The keys must all be of the same size. */
#define MDB_INTEGERKEY 0x08 #define MDB_INTEGERKEY 0x08
/** with #MDB_DUPSORT, sorted dup items have fixed size */ /** with #MDB_DUPSORT, sorted dup items have fixed size */
#define MDB_DUPFIXED 0x10 #define MDB_DUPFIXED 0x10
/** with #MDB_DUPSORT, dups are numeric in native byte order */ /** with #MDB_DUPSORT, dups are #MDB_INTEGERKEY-style integers */
#define MDB_INTEGERDUP 0x20 #define MDB_INTEGERDUP 0x20
/** with #MDB_DUPSORT, use reverse string dups */ /** with #MDB_DUPSORT, use reverse string dups */
#define MDB_REVERSEDUP 0x40 #define MDB_REVERSEDUP 0x40
@ -1095,9 +1095,9 @@ int mdb_txn_renew(MDB_txn *txn);
* keys may have multiple data items, stored in sorted order.) By default * keys may have multiple data items, stored in sorted order.) By default
* keys must be unique and may have only a single data item. * keys must be unique and may have only a single data item.
* <li>#MDB_INTEGERKEY * <li>#MDB_INTEGERKEY
* Keys are binary integers in native byte order. Setting this option * Keys are binary integers in native byte order, either unsigned int
* requires all keys to be the same size, typically sizeof(int) * or size_t, and will be sorted as such.
* or sizeof(size_t). * The keys must all be of the same size.
* <li>#MDB_DUPFIXED * <li>#MDB_DUPFIXED
* This flag may only be used in combination with #MDB_DUPSORT. This option * This flag may only be used in combination with #MDB_DUPSORT. This option
* tells the library that the data items for this database are all the same * tells the library that the data items for this database are all the same
@ -1105,8 +1105,8 @@ int mdb_txn_renew(MDB_txn *txn);
* all data items are the same size, the #MDB_GET_MULTIPLE and #MDB_NEXT_MULTIPLE * all data items are the same size, the #MDB_GET_MULTIPLE and #MDB_NEXT_MULTIPLE
* cursor operations may be used to retrieve multiple items at once. * cursor operations may be used to retrieve multiple items at once.
* <li>#MDB_INTEGERDUP * <li>#MDB_INTEGERDUP
* This option specifies that duplicate data items are also integers, and * This option specifies that duplicate data items are binary integers,
* should be sorted as such. * similar to #MDB_INTEGERKEY keys.
* <li>#MDB_REVERSEDUP * <li>#MDB_REVERSEDUP
* This option specifies that duplicate data items should be compared as * This option specifies that duplicate data items should be compared as
* strings in reverse order. * strings in reverse order.

5
mdb.c
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@ -4796,7 +4796,10 @@ mdb_env_close_ex(MDB_env *env, int dont_sync)
free(env); free(env);
} }
/** Compare two items pointing at aligned size_t's or unsigned's */ /** Compare two items pointing at aligned unsigned int's.
*
* This is also set as #MDB_INTEGERDUP|#MDB_DUPFIXED's #MDB_dbx.%md_dcmp.
*/
static int static int
mdb_cmp_int_a(const MDB_val *a, const MDB_val *b) mdb_cmp_int_a(const MDB_val *a, const MDB_val *b)
{ {