danielmitterdorfer

package de.am.gc.benchmarks;

import java.util.ArrayList;
import java.util.List;

/**
 * GC benchmark producing a mix of lifetime=0 and lifetime>0 objects which are kept in randomly updated lists. 
 * 
 * @author jsound
 */

danielmitterdorfer

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

danielmitterdorfer

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Calendar;
import java.util.Optional;

public class DnsDemo {
    public static void main(String[] args) throws Exception {
        while (true) {
            System.out.printf("%1$tH:%1$tM:%1$tS%n", Calendar.getInstance());
            printAddressInfo(addressOf("www.google.com"));

danielmitterdorfer

// Leads to command line output (jmh 0.4):
//
// # Warmup Fork: 1 of 3
// # Warmup Fork: 2 of 3
// # Warmup Fork: 3 of 3
// # Warmup Fork: 4 of 3
// # Warmup Fork: 5 of 3
//
@Fork(value = 3, warmups = 5)
public class JMHSettingsMicroBenchmark {