protected ThreadStack parseThreadInfo(String threadInfo) {
Scanner s = new Scanner(threadInfo);
ThreadStack result = new ThreadStack();
// parsing thread info
s.findInLine(threadInfoPattern());
MatchResult res = s.match();
result.setThreadName(res.group(1));
result.setType(res.group(3));
result.setPriority(res.group(4));
result.setTid(res.group(7));
result.setNid(res.group(8));
result.setStatus(res.group(9));
s.close();
return result;
}