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AdoptOpenJDK / jitwatch

Log analyser / visualiser for Java HotSpot JIT compiler. Inspect inlining decisions, hot methods, bytecode, and assembly. View results in the JavaFX user interface.
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java.lang.NullPointerException while parsing Zing 11 log #311

Closed mells82 closed 4 years ago

mells82 commented 4 years ago

While trying to parse a Hotspot log file generated by Zing 11 JVM, I face the following exception:

Exception in thread "Thread-8" java.lang.NullPointerException at org.adoptopenjdk.jitwatch.util.VmVersionDetector.getMajorVersionFromHotSpotTag(VmVersionDetector.java:34) at org.adoptopenjdk.jitwatch.parser.hotspot.HotSpotLogParser.handleVmVersion(HotSpotLogParser.java:395) at org.adoptopenjdk.jitwatch.parser.hotspot.HotSpotLogParser.handleTag(HotSpotLogParser.java:353) at org.adoptopenjdk.jitwatch.parser.hotspot.HotSpotLogParser.parseHeaderLines(HotSpotLogParser.java:99) at org.adoptopenjdk.jitwatch.parser.hotspot.HotSpotLogParser.parseLogFile(HotSpotLogParser.java:125) at org.adoptopenjdk.jitwatch.parser.AbstractLogParser.processLogFile(AbstractLogParser.java:365) at org.adoptopenjdk.jitwatch.ui.main.JITWatchUI$1.run(JITWatchUI.java:240) at java.lang.Thread.run(Thread.java:748)

The flags used to generate the Zing Hotspot file are -XX:+PrintCompilation -XX:+PrintCompileDateStamps -XX:+TraceDeoptimization -XX:-DisplayVMOutput -XX:+LogVMOutput -XX:LogFile=vmout.log

Zing version used: 11.0.3.0.101-zing_19.07.0.0-b4-product

The JITWatcher tool is launched using Zulu FX 8u222

chriswhocodes commented 4 years ago

Thanks for reporting. Looks like I need to update the version detection code.

chriswhocodes commented 4 years ago

My Zing OSS license expired so I've requested a renewal from Azul.

chriswhocodes commented 4 years ago

Got my renewed Azul Zing license for OSS work :) Will track down this bug asap.

chriswhocodes commented 4 years ago

selectVM

Hi, Just wanted to check that you are selecting Zing as the VM type as per the above screenshot? The stack trace you posted looks like JITWatch thinks it's parsing a HotSpot log file?

chriswhocodes commented 4 years ago

Closing this as I think the Zing parser was not selected. Please comment if this is not the case. Thanks.