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Don't malloc the free_pgs list every time

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This commit is contained in:
Howard Chu 2011-08-10 15:48:58 -07:00
parent 9f0b00b467
commit e3b668e84a
1 changed files with 2 additions and 8 deletions
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10
libraries/libmdb/mdb.c
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@ -316,6 +316,7 @@ struct MDB_env {
MDB_db *me_dbs[2];
MDB_oldpages *me_pghead;
pthread_key_t me_txkey; /* thread-key for readers */
pgno_t me_free_pgs[MDB_IDL_UM_SIZE];
};
#define NODESIZE offsetof(MDB_node, mn_data)
@ -610,12 +611,7 @@ mdb_txn_begin(MDB_env *env, int rdonly, MDB_txn **ret)
pthread_mutex_lock(&env->me_txns->mt_wmutex);
env->me_txns->mt_txnid++;
txn->mt_free_pgs = malloc(MDB_IDL_UM_SIZEOF);
if (txn->mt_free_pgs == NULL) {
free(txn->mt_u.dirty_queue);
free(txn);
return ENOMEM;
}
txn->mt_free_pgs = env->me_free_pgs;
txn->mt_free_pgs[0] = 0;
}
@ -703,7 +699,6 @@ mdb_txn_abort(MDB_txn *txn)
STAILQ_REMOVE_HEAD(txn->mt_u.dirty_queue, h.md_next);
free(dp);
}
free(txn->mt_free_pgs);
free(txn->mt_u.dirty_queue);
while ((mop = txn->mt_env->me_pghead)) {
@ -917,7 +912,6 @@ mdb_txn_commit(MDB_txn *txn)
}
pthread_mutex_unlock(&env->me_txns->mt_wmutex);
free(txn->mt_free_pgs);
free(txn->mt_u.dirty_queue);
free(txn);
txn = NULL;