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mdbx: copy for txn only used dbiseqs.

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Change-Id: I6fd2d8598b5e86c0d5b8d7eef535e81525cd14ee
This commit is contained in:
Leonid Yuriev 2019-12-24 20:01:42 +03:00
parent 53d5cb0151
commit bdb4ccb352
1 changed files with 7 additions and 5 deletions
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12
src/elements/core.c
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@ -5045,6 +5045,7 @@ static int mdbx_txn_renew0(MDBX_txn *txn, unsigned flags) {
txn->mt_dbxs = env->me_dbxs; /* mostly static anyway */
mdbx_ensure(env, txn->mt_txnid >=
/* paranoia is appropriate here */ *env->me_oldest);
txn->mt_numdbs = env->me_numdbs;
} else {
/* Not yet touching txn == env->me_txn0, it may be active */
mdbx_jitter4testing(false);
@ -5087,7 +5088,8 @@ static int mdbx_txn_renew0(MDBX_txn *txn, unsigned flags) {
if (txn->tw.lifo_reclaimed)
MDBX_PNL_SIZE(txn->tw.lifo_reclaimed) = 0;
env->me_txn = txn;
memcpy(txn->mt_dbiseqs, env->me_dbiseqs, env->me_maxdbs * sizeof(unsigned));
txn->mt_numdbs = env->me_numdbs;
memcpy(txn->mt_dbiseqs, env->me_dbiseqs, txn->mt_numdbs * sizeof(unsigned));
/* Copy the DB info and flags */
memcpy(txn->mt_dbs, meta->mm_dbs, CORE_DBS * sizeof(MDBX_db));
/* Moved to here to avoid a data race in read TXNs */
@ -5096,7 +5098,6 @@ static int mdbx_txn_renew0(MDBX_txn *txn, unsigned flags) {
}
/* Setup db info */
txn->mt_numdbs = env->me_numdbs;
mdbx_compiler_barrier();
for (unsigned i = CORE_DBS; i < txn->mt_numdbs; i++) {
unsigned x = env->me_dbflags[i];
@ -9269,7 +9270,7 @@ static int __cold mdbx_env_close0(MDBX_env *env) {
}
if (env->me_dbxs) {
for (unsigned i = env->me_maxdbs; --i >= CORE_DBS;)
for (unsigned i = env->me_numdbs; --i >= CORE_DBS;)
mdbx_free(env->me_dbxs[i].md_name.iov_base);
mdbx_free(env->me_dbxs);
}
@ -15108,8 +15109,9 @@ int __cold mdbx_dbi_stat(MDBX_txn *txn, MDBX_dbi dbi, MDBX_stat *dest,
}
static int mdbx_dbi_close_locked(MDBX_env *env, MDBX_dbi dbi) {
if (unlikely(dbi < CORE_DBS || dbi >= env->me_maxdbs))
return MDBX_EINVAL;
mdbx_assert(env, dbi >= CORE_DBS);
if (unlikely(dbi >= env->me_numdbs))
return MDBX_BAD_DBI;
char *ptr = env->me_dbxs[dbi].md_name.iov_base;
/* If there was no name, this was already closed */