gvsmirnov

package sample;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import org.openjdk.jmh.annotations.*;

import java.io.IOException;

public class DummyParserBenchmark {

gvsmirnov

package sample;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import org.openjdk.jmh.annotations.*;

import java.io.IOException;

public class DummyParserBenchmark {

gvsmirnov

Correspondence between Sun/Oracle JDK, OpenJDK and HotSpot VM versions

build date	Sun/Oracle JDK Version	OpenJDK Version	HotSpot VM Version
2006-11-29	1.6.0-b105		1.6.0-b105
2007-03-14	1.6.0_01-b06		1.6.0_01-b06
2007-06-22	1.6.0_02-b05		1.6.0_02-b05
2007-09-24	1.6.0_03-b05		1.6.0_03-b05
2007-12-14	1.6.0_04-b12		10.0-b19

gvsmirnov

package org.openjdk.jcstress.tests.finals;

import org.openjdk.jcstress.annotations.*;
import org.openjdk.jcstress.infra.results.IntResult2;
import org.openjdk.jcstress.infra.results.IntResult4;

@JCStressTest
@State
@Outcome(id = "[0, 0, 0, 0]",   expect = Expect.ACCEPTABLE, desc = "Neither of the escaped writes is observed")
@Outcome(id = "[1, 42, 1, 42]", expect = Expect.ACCEPTABLE, desc = "Both of the escaped writes are observed, and the write to the final field is observed in both cases")

gvsmirnov

/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/bin/java -XX:+UseG1GC -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -Xmx2g -Didea.launcher.port=7534 "-Didea.launcher.bin.path=/Applications/IntelliJ IDEA 15.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Content

gvsmirnov

Process:               idea [69393]
Path:                  /Applications/IntelliJ IDEA 15.app/Contents/MacOS/idea
Identifier:            com.jetbrains.intellij
Version:               15.0.2 (IU-143.1184.17)
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           idea [69393]
User ID:               501

Date/Time:             2016-01-13 23:05:45.587 +0200

gvsmirnov

Process:               idea [1324]
Path:                  /Applications/IntelliJ IDEA 15.app/Contents/MacOS/idea
Identifier:            com.jetbrains.intellij
Version:               15.0.2 (IU-143.1184.17)
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           idea [1324]
User ID:               501

Date/Time:             2016-01-14 13:09:47.341 +0200

gvsmirnov

Process:               idea [13368]
Path:                  /Applications/IntelliJ IDEA 15.app/Contents/MacOS/idea
Identifier:            com.jetbrains.intellij
Version:               15.0.2 (IU-143.1184.17)
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           idea [13368]
User ID:               501

Date/Time:             2016-01-18 10:55:49.837 +0200

gvsmirnov

7c7
<     private static volatile Double sensorValue;
---
>     private static volatile double sensorValue = Double.NaN;
15,16c15,16
<     private static void processSensorValue(Double value) {
<         if(value != null) {
---
>     private static void processSensorValue(double value) {
>         if(!Double.isNaN(value)) {

gvsmirnov

import java.util.*;

public class Oom {
  public static void main(String[] args) {
    List<Object> sink  = new ArrayList<>();
    
    while(true) {
      sink.add(new Object());
    }
  }