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ITS#7971 LMDB: clarification in mdb_txn_renew0().

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leo@yuriev.ru 2014-10-17 22:46:53 +00:00 committed by Howard Chu
parent bd6d2e6f2c
commit 9a8eb95674
1 changed files with 4 additions and 3 deletions
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7
libraries/liblmdb/mdb.c
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@ -2543,15 +2543,16 @@ mdb_txn_renew0(MDB_txn *txn)
UNLOCK_MUTEX(rmutex);
return MDB_READERS_FULL;
}
ti->mti_readers[i].mr_pid = pid;
ti->mti_readers[i].mr_tid = tid;
r = &ti->mti_readers[i];
r->mr_txnid = (txnid_t)-1;
r->mr_tid = tid;
r->mr_pid = pid; /* should be written last, see ITS#7971. */
if (i == nr)
ti->mti_numreaders = ++nr;
/* Save numreaders for un-mutexed mdb_env_close() */
env->me_numreaders = nr;
UNLOCK_MUTEX(rmutex);
r = &ti->mti_readers[i];
new_notls = (env->me_flags & MDB_NOTLS);
if (!new_notls && (rc=pthread_setspecific(env->me_txkey, r))) {
r->mr_pid = 0;