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github.com/AdoptOpenJDK/jitwatch @1.5.0

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7,979 symbols 21,661 edges 343 files 2 documented · 0% 1 cross-repo links

What it actually does AI analysis from the code graph — generated when you open this

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README

JITWatch

Log analyser and visualiser for the HotSpot JIT compiler.

Video introduction to JITWatch video
Slides from my LJC lightning talk on JITWatch slides

For instructions and screenshots see the wiki

https://github.com/AdoptOpenJDK/jitwatch/wiki

The JITWatch user interface is built using JavaFX which is downloaded as a maven dependency for JDK11+.

For pre-JDK11 you will need to use a Java runtime that includes JavaFX.

maven

mvn clean package && java -jar ui/target/jitwatch-ui-shaded.jar

Build an example HotSpot log

# Build the code and then run
cd scripts && ./makeDemoLogFile.sh

Extension points exported contracts — how you extend this code

Coin (Interface)

(no doc) [6 implementers]

core/src/main/resources/examples/PolymorphismTest.java

IRedrawable (Interface)

(no doc) [12 implementers]

ui/src/main/java/org/adoptopenjdk/jitwatch/ui/resize/IRedrawable.java

Coin (Interface)

(no doc) [6 implementers]

core/src/main/resources/examples/MegamorphicBypass.java

ICompilationChangeListener (Interface)

(no doc) [7 implementers]

ui/src/main/java/org/adoptopenjdk/jitwatch/ui/main/ICompilationChangeListener.java

ICompilationVisitable (Interface)

(no doc) [15 implementers]

core/src/main/java/org/adoptopenjdk/jitwatch/compilation/ICompilationVisitable.java

IStageClosedListener (Interface)

(no doc) [6 implementers]

ui/src/main/java/org/adoptopenjdk/jitwatch/ui/stage/IStageClosedListener.java

ITreeVisitable (Interface)

(no doc) [6 implementers]

core/src/main/java/org/adoptopenjdk/jitwatch/treevisitor/ITreeVisitable.java

ILineListener (Interface)

(no doc) [4 implementers]

ui/src/main/java/org/adoptopenjdk/jitwatch/ui/triview/ILineListener.java

Core symbols most depended-on inside this repo

size

called by 421

core/src/main/java/org/adoptopenjdk/jitwatch/model/bytecode/LineTable.java

add

called by 322

core/src/main/java/org/adoptopenjdk/jitwatch/model/bytecode/LineTable.java

getChildren

called by 306

core/src/main/java/org/adoptopenjdk/jitwatch/model/Tag.java

put

called by 210

core/src/main/java/org/adoptopenjdk/jitwatch/model/bytecode/BCParamSwitch.java

equals

called by 102

core/src/main/java/org/adoptopenjdk/jitwatch/model/Tag.java

getName

called by 99

core/src/main/java/org/adoptopenjdk/jitwatch/model/Tag.java

getAttributes

called by 98

core/src/main/java/org/adoptopenjdk/jitwatch/model/Tag.java

getValue

called by 83

core/src/main/java/org/adoptopenjdk/jitwatch/model/bytecode/IBytecodeParam.java

Shape

Method 7,593

Class 325

Interface 30

Enum 26

Function 5

Languages

Java100%

TypeScript1%

Kotlin1%

Modules by API surface

core/src/main/resources/examples/CodeCacheBuster.java5,002 symbols

core/src/main/java/org/adoptopenjdk/jitwatch/core/JITWatchConfig.java89 symbols

core/src/test/java/org/adoptopenjdk/jitwatch/test/TestParseUtil.java59 symbols

ui/src/main/java/org/adoptopenjdk/jitwatch/ui/main/JITWatchUI.java51 symbols

core/src/main/java/org/adoptopenjdk/jitwatch/util/ParseUtil.java47 symbols

ui/src/main/java/org/adoptopenjdk/jitwatch/ui/triview/TriView.java44 symbols

core/src/main/java/org/adoptopenjdk/jitwatch/model/JITStats.java44 symbols

core/src/main/java/org/adoptopenjdk/jitwatch/model/Compilation.java40 symbols

core/src/main/java/org/adoptopenjdk/jitwatch/demo/MakeHotSpotLog.java40 symbols

core/src/main/java/org/adoptopenjdk/jitwatch/model/AbstractMetaMember.java39 symbols

core/src/main/java/org/adoptopenjdk/jitwatch/parser/AbstractLogParser.java36 symbols

core/src/main/java/org/adoptopenjdk/jitwatch/parser/zing/ZingLine.java35 symbols

Used by 1 indexed graphs manifest dependencies, hub-wide

github.com/questdb/questdb

For agents

$ claude mcp add jitwatch \
  -- python -m otcore.mcp_server <graph>

⬇ download graph artifact