mpujari

sudo docker exec 2c4267705051 jcmd 1 VM.unlock_commercial_features
sudo docker exec 2c4267705051 jcmd 1 JFR.start name=MyRecording settings=profile delay=20s duration=12m compress=true filename=/tmp/recording01.jfr
sudo docker exec 2c4267705051 jcmd 1 JFR.check
sudo docker cp 2c4267705051:/tmp/recording01.jfr .
sudo docker exec 2c4267705051 rm /tmp/recording01.jfr

mpujari

# To do JVM's flight recording, we need pass "-XX:+UnlockCommercialFeatures -XX:+FlightRecorder" as JVM cmd line options
#
# Below is an example to run a container with the above option
# docker run -d -e JAVA_OPTS="-XX:+UnlockCommercialFeatures -XX:+FlightRecorder" DOCKER_IMAGE_NAME

DATE=$(date +%d%m%Y_%H_%M_%S)
FILENAME=$1_recording_${DATE}.jfr

# delay is set to 0 sec, pls changed as you like
# duration is set to 1 min, pls changed as you like

mpujari

https://dzone.com/articles/learning-to-use-the-graalvm

http://chrisseaton.com/truffleruby/jokerconf17/

mpujari

docker run --rm -v "$PWD":/usr/src/ourapp -w /usr/src/ourapp java javac HelloWorld.java
docker run --name hello_world -d -v "$PWD":/usr/src/ourapp -w /usr/src/ourapp -m 256m java java HelloWorld

mpujari

import java.net.ServerSocket

import scala.concurrent.Future
import scala.concurrent.ExecutionContext.Implicits.global
import java.io.Closeable
import java.util.Date

object SimpleEchoServer {

mpujari

https://www.gitbook.com/book/0xax/linux-insides/details

https://0xax.github.io/categories/assembler/

mpujari

Processing a file using par (not in sequence)

source.getLines.toStream.par.foreach( line => println(line))

mpujari

/*
 * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *

mpujari

So you want to write an interpreter?
https://www.youtube.com/watch?v=LCslqgM48D4

mpujari

https://xueliangliang.wordpress.com/2012/04/17/how-scalas-compiler-works/

Scala compiler phases
http://stackoverflow.com/a/4528092/1079835

Lesson on Scala
https://twitter.github.io/scala_school/index.html