1494   DBImpl* impl = new DBImpl(options, dbname);  in Open()  local
1495   impl->mutex_.Lock();  in Open()
1499   Status s = impl->Recover(&edit, &save_manifest);  in Open()
1500   if (s.ok() && impl->mem_ == NULL) {  in Open()
1502     uint64_t new_log_number = impl->versions_->NewFileNumber();  in Open()
1508       impl->logfile_ = lfile;  in Open()
1509       impl->logfile_number_ = new_log_number;  in Open()
1510       impl->log_ = new log::Writer(lfile);  in Open()
1511       impl->mem_ = new MemTable(impl->internal_comparator_);  in Open()
1512       impl->mem_->Ref();  in Open()
1517     edit.SetLogNumber(impl->logfile_number_);  in Open()
1518     s = impl->versions_->LogAndApply(&edit, &impl->mutex_);  in Open()
1521     impl->DeleteObsoleteFiles();  in Open()
1522     impl->MaybeScheduleCompaction();  in Open()
1524   impl->mutex_.Unlock();  in Open()
1526     assert(impl->mem_ != NULL);  in Open()
1527     *dbptr = impl;  in Open()
1529     delete impl;  in Open()