This ran for me until 15058 iterations, then the whole system froze for
a few seconds and the program threw an exception (without a stacktrace).
Windows 10, javafx.runtime.version: 16+8
This looks like some native resource getting exhausted (especially since
the whole system froze for a moment when the application failed). I did
a heapdump afterwards, but didn't see any Popup instances left.
Looking at the code, it basically errors on a native call to create a
window. Checking a bit further, it does call the native _close to close
these windows. Couldn't debug much further from there.
--John
On 02/09/2021 20:07, Troels Skytte Kaspersen wrote:
Hi,
We have received many complaints from our customers that the popups are not
shown anymore after a period of time.
I have then created a simple piece of code that result in the error our
customers get:
package test;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Popup;
import javafx.stage.Stage;
public class TestFX extends Application {
@Override
public void start(Stage primaryStage) {
System.out.println("javafx.runtime.version: " +
System.getProperties().get("javafx.runtime.version"));
Stage stage = new Stage();
Scene scene = new Scene(new StackPane());
stage.setScene(scene);
stage.show();
Popup popOver = new Popup();
for (int i = 0; i < 99999; i++) {
popOver.show(scene.getRoot(), 1, 1);
popOver.hide();
System.out.println(i);
}
}
public static void main(String[] args) {
launch(args);
}
}
I use javafx 16+8
If I run the code, it will result in error after various iterations:
Exception in Application start method
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
at
javafx.base/com.sun.javafx.binding.ExpressionHelper.removeListener(ExpressionHelper.java:73)
at
javafx.base/javafx.beans.property.ReadOnlyBooleanPropertyBase.removeListener(ReadOnlyBooleanPropertyBase.java:67)
at
javafx.graphics/javafx.stage.PopupWindow.unbindOwnerFocusedProperty(PopupWindow.java:895)
at
javafx.graphics/javafx.stage.PopupWindow.doVisibleChanged(PopupWindow.java:542)
at
javafx.graphics/javafx.stage.PopupWindow$1.doVisibleChanged(PopupWindow.java:111)
at
javafx.graphics/com.sun.javafx.stage.PopupWindowHelper.visibleChangedImpl(PopupWindowHelper.java:63)
at
javafx.graphics/com.sun.javafx.stage.WindowHelper.visibleChanged(WindowHelper.java:77)
at
javafx.graphics/javafx.stage.Window$12.invalidated(Window.java:1160)
at
javafx.base/javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:110)
at
javafx.base/javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:145)
at javafx.graphics/javafx.stage.Window.setShowing(Window.java:1187)
at javafx.graphics/javafx.stage.Window.hide(Window.java:1212)
at
javafx.graphics/javafx.stage.PopupWindow.hide(PopupWindow.java:486)
at
javafx.graphics/javafx.stage.PopupWindow.lambda$new$0(PopupWindow.java:147)
at
javafx.base/javafx.beans.value.WeakChangeListener.changed(WeakChangeListener.java:86)
at
javafx.base/com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:181)
at
javafx.base/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
at
javafx.graphics/javafx.scene.Node$TreeShowingPropertyReadOnly.invalidate(Node.java:8479)
at javafx.graphics/javafx.scene.Node.setTreeShowing(Node.java:8436)
at
javafx.graphics/javafx.scene.Node.updateTreeShowing(Node.java:8427)
at javafx.graphics/javafx.scene.Node.lambda$new$2(Node.java:1010)
at
javafx.base/com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(ExpressionHelper.java:360)
at
javafx.base/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:80)
at
javafx.base/javafx.beans.property.ReadOnlyBooleanPropertyBase.fireValueChangedEvent(ReadOnlyBooleanPropertyBase.java:78)
at
javafx.base/javafx.beans.property.ReadOnlyBooleanWrapper.fireValueChangedEvent(ReadOnlyBooleanWrapper.java:103)
at
javafx.base/javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:111)
at
javafx.base/javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:145)
at javafx.graphics/javafx.stage.Window.setShowing(Window.java:1187)
at javafx.graphics/javafx.stage.Window.hide(Window.java:1212)
at
javafx.graphics/com.sun.javafx.stage.WindowPeerListener.closed(WindowPeerListener.java:105)
at
javafx.graphics/com.sun.javafx.tk.quantum.GlassWindowEventHandler.run(GlassWindowEventHandler.java:144)
at
javafx.graphics/com.sun.javafx.tk.quantum.GlassWindowEventHandler.run(GlassWindowEventHandler.java:40)
at
java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at
javafx.graphics/com.sun.javafx.tk.quantum.GlassWindowEventHandler.lambda$handleWindowEvent$4(GlassWindowEventHandler.java:176)
at
javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:412)
at
javafx.graphics/com.sun.javafx.tk.quantum.GlassWindowEventHandler.handleWindowEvent(GlassWindowEventHandler.java:174)
at
javafx.graphics/com.sun.glass.ui.Window.handleWindowEvent(Window.java:1336)
at
javafx.graphics/com.sun.glass.ui.Window.notifyDestroy(Window.java:1250)
at javafx.graphics/com.sun.glass.ui.win.WinWindow._close(Native
Method)
at javafx.graphics/com.sun.glass.ui.Window.close(Window.java:352)
at
javafx.graphics/com.sun.glass.ui.win.WinWindow.close(WinWindow.java:316)
at
javafx.graphics/com.sun.glass.ui.Application.terminate(Application.java:394)
at
javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.lambda$exit$13(QuantumToolkit.java:831)
at
javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.runWithRenderLock(QuantumToolkit.java:430)
at
javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.exit(QuantumToolkit.java:827)
at
javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$tkExit$16(PlatformImpl.java:614)
at
javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:474)
at
javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:447)
at
java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at
javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:446)
at
javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at
javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at
javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
at java.base/java.lang.Thread.run(Thread.java:831)
java.lang.reflect.InvocationTargetException
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at
javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)
at
javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at
java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1071)
Caused by: java.lang.RuntimeException: Exception in Application start method
at
javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)
at
javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)
at java.base/java.lang.Thread.run(Thread.java:831)
Caused by: java.lang.RuntimeException: could not create platform window
at javafx.graphics/com.sun.glass.ui.Window.<init>(Window.java:294)
at
javafx.graphics/com.sun.glass.ui.win.WinWindow.<init>(WinWindow.java:54)
at
javafx.graphics/com.sun.glass.ui.win.WinApplication.createWindow(WinApplication.java:219)
at
javafx.graphics/com.sun.javafx.tk.quantum.WindowStage.initPlatformWindow(WindowStage.java:201)
at
javafx.graphics/com.sun.javafx.tk.quantum.WindowStage.init(WindowStage.java:143)
at
javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.createTKPopupStage(QuantumToolkit.java:678)
at
javafx.graphics/javafx.stage.PopupWindow.doVisibleChanging(PopupWindow.java:514)
at
javafx.graphics/javafx.stage.PopupWindow$1.doVisibleChanging(PopupWindow.java:107)
at
javafx.graphics/com.sun.javafx.stage.PopupWindowHelper.visibleChangingImpl(PopupWindowHelper.java:57)
at
javafx.graphics/com.sun.javafx.stage.WindowHelper.visibleChanging(WindowHelper.java:73)
at
javafx.graphics/javafx.stage.Window$12.invalidated(Window.java:1065)
at
javafx.base/javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:110)
at
javafx.base/javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:145)
at javafx.graphics/javafx.stage.Window.setShowing(Window.java:1187)
at javafx.graphics/javafx.stage.Window.show(Window.java:1202)
at
javafx.graphics/javafx.stage.PopupWindow.showImpl(PopupWindow.java:472)
at
javafx.graphics/javafx.stage.PopupWindow.show(PopupWindow.java:417)
at test.TestFX.start(TestFX.java:35)
at
javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at
javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:474)
at
javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:447)
at
java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at
javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:446)
at
javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at
javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at
javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
... 1 more
Exception running application test.TestFX
B_
I have tried javafx version down to javafx 11 and the error always occurs at
some point.
I would consider this a very critical error. The workaround seems to just set
the opacity to 0 instead of hide(), but still I expect this code to run until
the end..
Venlig hilsen / best regards
Troels Skytte Kaspersen
Software Developer
ASPECT4 Development
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