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Additional debug, fixes

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Fixed order of mdb_del0 operations
Drop in-memory free list from env on txn_abort
This commit is contained in:
Howard Chu 2011-08-08 17:15:02 -07:00
parent 4ba37eed5e
commit 36b0883564
1 changed files with 30 additions and 1 deletions
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31
libraries/libmdb/mdb.c
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@ -433,6 +433,16 @@ mdb_alloc_page(MDB_txn *txn, MDB_page *parent, unsigned int parent_idx, int num)
txn->mt_env->me_pghead = mop;
memcpy(mop->mo_pages, idl, MDB_IDL_SIZEOF(idl));
#if DEBUG > 1
{
unsigned int i;
DPRINTF("IDL read txn %lu root %lu num %lu",
mop->mo_txnid, txn->mt_dbs[FREE_DBI].md_root, idl[0]);
for (i=0; i<idl[0]; i++) {
DPRINTF("IDL %lu", idl[i+1]);
}
}
#endif
/* drop this IDL from the DB */
mpp.mp_parent = NULL;
mpp.mp_pi = 0;
@ -640,6 +650,7 @@ mdb_txn_abort(MDB_txn *txn)
if (F_ISSET(txn->mt_flags, MDB_TXN_RDONLY)) {
txn->mt_u.reader->mr_txnid = 0;
} else {
MDB_oldpages *mop;
/* Discard all dirty pages. */
while (!STAILQ_EMPTY(txn->mt_u.dirty_queue)) {
dp = STAILQ_FIRST(txn->mt_u.dirty_queue);
@ -648,6 +659,12 @@ mdb_txn_abort(MDB_txn *txn)
}
free(txn->mt_free_pgs);
free(txn->mt_u.dirty_queue);
while ((mop = txn->mt_env->me_pghead)) {
txn->mt_env->me_pghead = mop->mo_next;
free(mop);
}
env->me_txn = NULL;
env->me_txns->mt_txnid--;
pthread_mutex_unlock(&env->me_txns->mt_wmutex);
@ -723,6 +740,17 @@ mdb_txn_commit(MDB_txn *txn)
mpp.mp_pi = 0;
mdb_search_page(txn, FREE_DBI, &key, NULL, 1, &mpp);
#if DEBUG > 1
{
unsigned int i;
ULONG *idl = txn->mt_free_pgs;
DPRINTF("IDL write txn %lu root %lu num %lu",
txn->mt_txnid, txn->mt_dbs[FREE_DBI].md_root, idl[0]);
for (i=0; i<idl[0]; i++) {
DPRINTF("IDL %lu", idl[i+1]);
}
}
#endif
/* write to last page of freeDB */
key.mv_size = sizeof(pgno_t);
key.mv_data = (char *)&txn->mt_txnid;
@ -2335,7 +2363,6 @@ mdb_del0(MDB_txn *txn, MDB_dbi dbi, unsigned int ki, MDB_pageparent *mpp, MDB_no
{
int rc;
mdb_del_node(mpp->mp_page, ki);
/* add overflow pages to free list */
if (F_ISSET(leaf->mn_flags, F_BIGDATA)) {
int i, ovpages;
@ -2344,10 +2371,12 @@ mdb_del0(MDB_txn *txn, MDB_dbi dbi, unsigned int ki, MDB_pageparent *mpp, MDB_no
memcpy(&pg, NODEDATA(leaf), sizeof(pg));
ovpages = OVPAGES(NODEDSZ(leaf), txn->mt_env->me_psize);
for (i=0; i<ovpages; i++) {
DPRINTF("freed ov page %lu", pg);
mdb_idl_insert(txn->mt_free_pgs, pg);
pg++;
}
}
mdb_del_node(mpp->mp_page, ki);
txn->mt_dbs[dbi].md_entries--;
rc = mdb_rebalance(txn, dbi, mpp);
if (rc != MDB_SUCCESS)