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mdbx: less memset overhead while txn-init.

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This commit is contained in:
Leo Yuriev 2018-02-02 19:05:41 +03:00
parent 5db134c816
commit 7b59452aed
1 changed files with 4 additions and 2 deletions
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6
src/mdbx.c
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@ -2735,7 +2735,8 @@ int mdbx_txn_begin(MDBX_env *env, MDBX_txn *parent, unsigned flags,
MDBX_txn **ret) {
MDBX_txn *txn;
MDBX_ntxn *ntxn;
int rc, size, tsize;
int rc;
unsigned size, tsize;
if (unlikely(!env || !ret))
return MDBX_EINVAL;
@ -2787,10 +2788,11 @@ int mdbx_txn_begin(MDBX_env *env, MDBX_txn *parent, unsigned flags,
return MDBX_BUSY;
goto renew;
}
if (unlikely((txn = calloc(1, size)) == NULL)) {
if (unlikely((txn = malloc(size)) == NULL)) {
mdbx_debug("calloc: %s", "failed");
return MDBX_ENOMEM;
}
memset(txn, 0, tsize);
txn->mt_dbxs = env->me_dbxs; /* static */
txn->mt_dbs = (MDBX_db *)((char *)txn + tsize);
txn->mt_dbflags = (uint8_t *)txn + size - env->me_maxdbs;