/**
* get current thread cpu usage data.
*
* @param pid process id
* @param tid thread id
* @return ThreadUsage
*/
private ThreadUsage currentThreadUsage(final long pid, final long tid) {
String file = getThreadStatFile(pid, tid);
try {
String cpuline = FileUtils.file2string(file);
return new ThreadUsage(cpuline);
} catch (IOException ioe) {
System.err.println(String.format("cannot find stat of process: %d, thread: %d", pid, tid));
System.exit(1);
return null;
}
}
/**
* get current process cpu usage data.
*
* @param pid process id
* @return ProcessUsage
*/
private ProcessUsage currentProcessUsage(final long pid) {
String file = getProcessStatFile(pid);
try {
String cpuline = FileUtils.file2string(file);
return new ProcessUsage(cpuline);
} catch (IOException ioe) {
System.err.println("cannot find stat of process: " + pid);
System.exit(1);
return null;
}
}