LdbLogsReader::~LdbLogsReader()
{
if (last_log_record_ != NULL)
{
delete last_log_record_;
}
clear_reader(0);
}
int LdbLogsReader::start_new_reader(uint64_t min_number)
{
int ret = TAIR_RETURN_SUCCESS;
clear_reader(min_number);
leveldb::DBImpl* db = dynamic_cast<leveldb::DBImpl*>(db_);
leveldb::Env* db_env = db->GetEnv();
const std::string& db_log_dir = db->DBLogDir();
std::vector<std::string> filenames;
leveldb::Status s = db_env->GetChildren(db_log_dir, &filenames);
uint64_t number = 0;
leveldb::FileType type;
std::vector<uint64_t> logs;
for (size_t i = 0; i < filenames.size(); i++)
{
if (leveldb::ParseFileName(filenames[i], &number, &type) && type == leveldb::kLogFile)
{
logs.push_back(number);
}
}
uint64_t new_logfile_number = 0;
uint64_t db_logfile_number = db->LogFileNumber();
if (!logs.empty())
{
std::sort(logs.begin(), logs.end());
// maybe binary-search..
for (size_t i = 0; i < logs.size(); ++i)
{
if (logs[i] > min_number && logs[i] <= db_logfile_number)
{
new_logfile_number = logs[i];
break;
}
}
}
if (0 == new_logfile_number)
{
log_info("no ldb log for reader");
}
else
{
ret = init_reader(new_logfile_number);
}
return ret;
}
IR Compile(Form* form)
{
string out;
string tmp;
if(form == NULL)
error(form,"Can't emit code for the null form.");
else if(isatom(form))
{
if(val(form) == "quit")
exit(0);
else if(val(form) == "IR")
{
master.Program->dump();
nerror("Dumped IR.");
}
else if(val(form) == "debug")
{
master.debug = !master.debug;
nerror("Debug mode is ",(master.debug?"on":"off"),".");
}
else
out = emitCode(form);
}
else
out = emitCode(form/*,Top*/);
/*for(unsigned long i = 0; i < master.Persistent.size(); i++)
tmp += master.Persistent[i] + "\n";*/
for(unsigned long i = 0; i < master.CodeStack.size(); i++)
tmp += master.CodeStack[i] + "\n";
out = "define " + latest_type() + " @entry(){\n" + out + "\nret " + latest_type() + " " + get_current_res() + "\n}";
out = tmp + out;
string type = latest_type();
master.CodeStack.clear();
clear_reader();
return {out,type};
}
