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mdbx: cleanup formating.

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This commit is contained in:
Leo Yuriev 2017-05-17 20:06:57 +03:00
parent ec114d06b7
commit 00be62e235
3 changed files with 420 additions and 462 deletions
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805
mdbx.h
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File diff suppressed because it is too large Load Diff

31
src/bits.h
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@ -431,25 +431,20 @@ struct MDB_txn {
/* Array of sequence numbers for each DB handle */
unsigned *mt_dbiseqs;
/** @defgroup mt_dbflag Transaction DB Flags
* @ingroup internal
* @{
*/
#define DB_DIRTY 0x01 /**< DB was written in this txn */
#define DB_STALE 0x02 /**< Named-DB record is older than txnID */
#define DB_NEW 0x04 /**< Named-DB handle opened in this txn */
#define DB_VALID 0x08 /**< DB handle is valid, see also #MDB_VALID */
#define DB_USRVALID 0x10 /**< As #DB_VALID, but not set for #FREE_DBI */
#define DB_DUPDATA 0x20 /**< DB is #MDB_DUPSORT data */
/** @} */
/** In write txns, array of cursors for each DB */
/* Transaction DB Flags */
#define DB_DIRTY 0x01 /* DB was written in this txn */
#define DB_STALE 0x02 /* Named-DB record is older than txnID */
#define DB_NEW 0x04 /* Named-DB handle opened in this txn */
#define DB_VALID 0x08 /* DB handle is valid, see also #MDB_VALID */
#define DB_USRVALID 0x10 /* As #DB_VALID, but not set for #FREE_DBI */
#define DB_DUPDATA 0x20 /* DB is #MDB_DUPSORT data */
/* In write txns, array of cursors for each DB */
MDB_cursor **mt_cursors;
/** Array of flags for each DB */
unsigned char *mt_dbflags;
/** Number of DB records in use, or 0 when the txn is finished.
* This number only ever increments until the txn finishes; we
* don't decrement it when individual DB handles are closed.
*/
/* Array of flags for each DB */
uint8_t *mt_dbflags;
/* Number of DB records in use, or 0 when the txn is finished.
* This number only ever increments until the txn finishes; we
* don't decrement it when individual DB handles are closed. */
MDB_dbi mt_numdbs;
/** @defgroup mdbx_txn Transaction Flags

46
src/mdbx.c
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@ -2437,7 +2437,7 @@ size_t mdbx_txn_id(MDB_txn *txn) {
return txn->mt_txnid;
}
/** Export or close DBI handles opened in this txn. */
/* Export or close DBI handles opened in this txn. */
static void mdbx_dbis_update(MDB_txn *txn, int keep) {
MDB_dbi n = txn->mt_numdbs;
MDB_env *env = txn->mt_env;
@ -2463,11 +2463,10 @@ static void mdbx_dbis_update(MDB_txn *txn, int keep) {
env->me_numdbs = n;
}
/** End a transaction, except successful commit of a nested transaction.
/* End a transaction, except successful commit of a nested transaction.
* May be called twice for readonly txns: First reset it, then abort.
* @param[in] txn the transaction handle to end
* @param[in] mode why and how to end the transaction
*/
* @param[in] mode why and how to end the transaction */
static int mdbx_txn_end(MDB_txn *txn, unsigned mode) {
MDB_env *env = txn->mt_env;
static const char *const names[] = MDB_END_NAMES;
@ -4717,8 +4716,7 @@ static int mdbx_page_search(MDB_cursor *mc, MDB_val *key, int flags) {
memcpy(&md_flags, ((char *)data.mv_data + offsetof(MDB_db, md_flags)),
sizeof(uint16_t));
/* The txn may not know this DBI, or another process may
* have dropped and recreated the DB with other flags.
*/
* have dropped and recreated the DB with other flags. */
if (unlikely((mc->mc_db->md_flags & PERSISTENT_FLAGS) != md_flags))
return MDB_INCOMPATIBLE;
memcpy(mc->mc_db, data.mv_data, sizeof(MDB_db));
@ -10067,24 +10065,24 @@ int mdbx_replace(MDB_txn *txn, MDB_dbi dbi, MDB_val *key, MDB_val *new_data,
/* если данные совпадают, то ничего делать не надо */
goto bailout;
#if 0 /* LY: исправлено в mdbx_cursor_put(), здесь в качестве памятки */
MDB_node *leaf = NODEPTR(mc.mc_pg[mc.mc_top], mc.mc_ki[mc.mc_top]);
if (F_ISSET(leaf->mn_flags, F_DUPDATA)
&& mc.mc_xcursor->mx_db.md_entries > 1) {
/* Если у ключа больше одного значения, то
* сначала удаляем найденое "старое" значение.
*
* Этого можно не делать, так как MDBX уже
* обучен корректно обрабатывать такие ситуации.
*
* Однако, следует помнить, что в LMDB при
* совпадении размера данных, значение будет
* просто перезаписано с нарушением
* упорядоченности, что сломает поиск. */
rc = mdbx_cursor_del(&mc, 0);
if (rc != MDB_SUCCESS)
goto bailout;
flags -= MDB_CURRENT;
}
MDB_node *leaf = NODEPTR(mc.mc_pg[mc.mc_top], mc.mc_ki[mc.mc_top]);
if (F_ISSET(leaf->mn_flags, F_DUPDATA) &&
mc.mc_xcursor->mx_db.md_entries > 1) {
/* Если у ключа больше одного значения, то
* сначала удаляем найденое "старое" значение.
*
* Этого можно не делать, так как MDBX уже
* обучен корректно обрабатывать такие ситуации.
*
* Однако, следует помнить, что в LMDB при
* совпадении размера данных, значение будет
* просто перезаписано с нарушением
* упорядоченности, что сломает поиск. */
rc = mdbx_cursor_del(&mc, 0);
if (rc != MDB_SUCCESS)
goto bailout;
flags -= MDB_CURRENT;
}
#endif
}
} else {