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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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Pressing "Chain" button throws a NullPointerException #322

Closed cazacugmihai closed 4 years ago

cazacugmihai commented 4 years ago

Java:

java -version

openjdk version "14.0.1" 2020-04-14
OpenJDK Runtime Environment (build 14.0.1+8)
OpenJDK 64-Bit Server VM (build 14.0.1+8, mixed mode, sharing)

Jitwatch: git clone https://github.com/AdoptOpenJDK/jitwatch.git git rev-parse --short HEAD 1563be7 mvn clean install -DskipTests=true mvn exec:java

Error:

22:29:32.694 [JavaFX Application Thread] WARN  o.a.j.c.CompilationUtil - No Task found in Compilation 14554
22:29:32.694 [JavaFX Application Thread] WARN  o.a.j.c.CompilationUtil - Compilation tags for 14554
<task_queued method="path/to/ClassA &lt;init&gt; (Lpath/to/ClassB;)V" level="3" bytes="98" count="384" stamp="1420.467" comment="tiered" hot_count="384" compile_id="14554" iicount="384"/>

<nmethod stub_offset="3408" dependencies_offset="4416" address="0x00007f82ed778b90" metadata_offset="3496" method="path/to/ClassA &lt;init&gt; (Lpath/to/ClassB;)V" level="3" count="384" stamp="1420.469" nul_chk_table_offset="4456" scopes_data_offset="3576" iicount="384" oops_offset="3488" entry="0x00007f82ed778d80" size="4472" scopes_pcs_offset="3872" insts_offset="496" bytes="98" relocation_offset="344" compile_id="14554" compiler="c1"/>

[WARNING] 
java.lang.NullPointerException
    at org.adoptopenjdk.jitwatch.ui.compilechain.CompileChainStage.buildTree (CompileChainStage.java:375)
    at org.adoptopenjdk.jitwatch.ui.compilechain.CompileChainStage.compilationChanged (CompileChainStage.java:132)
    at org.adoptopenjdk.jitwatch.ui.main.JITWatchUI.openCompileChain (JITWatchUI.java:1141)
    at org.adoptopenjdk.jitwatch.ui.triview.TriView$1.handle (TriView.java:161)
    at org.adoptopenjdk.jitwatch.ui.triview.TriView$1.handle (TriView.java:155)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent (CompositeEventHandler.java:86)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent (EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent (EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent (CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent (BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent (EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent (BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent (EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent (BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent (EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl (EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent (EventUtil.java:49)
    at javafx.event.Event.fireEvent (Event.java:198)
    at javafx.scene.Node.fireEvent (Node.java:8890)
    at javafx.scene.control.Button.fire (Button.java:203)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased (ButtonBehavior.java:206)
    at com.sun.javafx.scene.control.inputmap.InputMap.handle (InputMap.java:274)
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent (CompositeEventHandler.java:218)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent (CompositeEventHandler.java:80)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent (EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent (EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent (CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent (BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent (EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent (BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent (EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent (BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent (EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl (EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent (EventUtil.java:54)
    at javafx.event.Event.fireEvent (Event.java:198)
    at javafx.scene.Scene$MouseHandler.process (Scene.java:3862)
    at javafx.scene.Scene.processMouseEvent (Scene.java:1849)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent (Scene.java:2590)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run (GlassViewEventHandler.java:409)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run (GlassViewEventHandler.java:299)
    at java.security.AccessController.doPrivileged (AccessController.java:391)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2 (GlassViewEventHandler.java:447)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock (QuantumToolkit.java:411)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent (GlassViewEventHandler.java:446)
    at com.sun.glass.ui.View.handleMouseEvent (View.java:556)
    at com.sun.glass.ui.View.notifyMouse (View.java:942)
    at com.sun.glass.ui.gtk.GtkApplication._runLoop (Native Method)
    at com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11 (GtkApplication.java:277)
    at java.lang.Thread.run (Thread.java:832)
cazacugmihai commented 4 years ago

It was my mistake: I have used wrong paths for "Class locations" (my application has two output folders which contain the generated classes: one related to Gradle and another one generated by IDE).