Using Jlink to create custom runtime and it keeps failing

[chengenzhao]

Hi:

Versions:
FXGL-21.1 (27.03.2024 07.52) on MAC
Java:24
JavaFX:25-ea

Not sure this is the bug of JavaFX or FXGL highly likely is JavaFX's bug

I tried to run the FXGL game in my IDE and it works fine

when releasing, I created a custom JRE using jlink

and when using the jlinked JRE to run the FXGL game

it failed

These code may cause the game/project to crash

  @Override
  protected void initGame() {
    FXGL.getAssetLoader().clearCache();

    var bgm = FXGL.loopBGM("maou_game_theme01.mp3");
    bgm.getAudio().setVolume(0);
    new Transition() {
      {
        setCycleDuration(Duration.seconds(1));
      }

      protected void interpolate(double frac) {
        bgm.getAudio().setVolume(FXGL.getSettings().getGlobalMusicVolume() * frac);
      }
    }.play();
  }

keep telling me this information:

command:
bin/java -XX:+UseZGC --enable-native-access=javafx.graphics,javafx.media -m com.whitewoocity.fxglruntime/com.whitewoodcity.Main

19:33:01.756 [JavaFX Application Thread] INFO  Engine               - FXGL-21.1 (27.03.2024 07.52) on MAC (J:24 FX:25-ea)
19:33:01.756 [JavaFX Application Thread] INFO  Engine               - Source code and latest versions at: https://github.com/AlmasB/FXGL
19:33:01.756 [JavaFX Application Thread] INFO  Engine               -       Ask questions and discuss at: https://github.com/AlmasB/FXGL/discussions
19:33:01.756 [JavaFX Application Thread] INFO  Engine               -              Join the FXGL chat at: https://gitter.im/AlmasB/FXGL
19:33:01.841 [FXGL Background Thread 1 ] WARN  SystemBundleService  - Failed to load: java.io.FileNotFoundException: /Users/chengenzhao/Downloads/app/system/fxgl.bundle (No such file or directory)
19:33:01.850 [FXGL Background Thread 1 ] INFO  FXGLApplication      - FXGL initialization took: 0.077 sec
19:33:02.058 [FXGL Background Thread 4 ] INFO  FXGLApplication      - Game initialization took: 0.146 sec
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x000000019bfbc40c, pid=55672, tid=76035
#
# JRE version: OpenJDK Runtime Environment (24.0+36) (build 24+36-3646)
# Java VM: OpenJDK 64-Bit Server VM (24+36-3646, mixed mode, tiered, compressed class ptrs, z gc, bsd-aarch64)
# Problematic frame:
# C  [libsystem_platform.dylib+0x340c]  _platform_memmove+0x1bc
#
# Core dump will be written. Default location: /cores/core.55672
#
# An error report file with more information is saved as:
# /Users/chengenzhao/Downloads/app/hs_err_pid55672.log
#
# If you would like to submit a bug report, please visit:
#   https://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

and

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x000000013f549384, pid=55651, tid=259
#
# JRE version: OpenJDK Runtime Environment (24.0+36) (build 24+36-3646)
# Java VM: OpenJDK 64-Bit Server VM (24+36-3646, mixed mode, tiered, compressed class ptrs, z gc, bsd-aarch64)
# Problematic frame:
# j  com.sun.media.jfxmedia.locator.Locator.setConnectionProperty(Ljava/lang/String;Ljava/lang/Object;)V+0 javafx.media@25-ea
#
# Core dump will be written. Default location: /cores/core.55651
#
# An error report file with more information is saved as:
# /Users/chengenzhao/Downloads/app/hs_err_pid55651.log
[4.410s][warning][os] Loading hsdis library failed
#
# If you would like to submit a bug report, please visit:
#   https://bugreport.java.com/bugreport/crash.jsp
#

seems like these two dylib has some problem:

[libsystem_platform.dylib+0x340c] _platform_memmove+0x1bc

j com.sun.media.jfxmedia.locator.Locator.setConnectionProperty(Ljava/lang/String;Ljava/lang/Object;)V+0 javafx.media@25-ea

any ideas why?

thx

[chengenzhao]

I create a demo project here:
https://github.com/chengenzhao/fxgl-runtime

please fork it and run it locally
using javafx-maven-plugin to execute mvn javafx:jlink command to generate the app and classes
merge these two directory and then execute command:

 bin/java -XX:+UseZGC --enable-native-access=javafx.graphics,javafx.media -m com.whitewoocity.fxglruntime/com.whitewoodcity.Main

here is what I got

19:58:14.026 [JavaFX Application Thread] INFO  Engine               - FXGL-21.1 (27.03.2024 07.52) on MAC (J:24 FX:25-ea)
19:58:14.027 [JavaFX Application Thread] INFO  Engine               - Source code and latest versions at: https://github.com/AlmasB/FXGL
19:58:14.027 [JavaFX Application Thread] INFO  Engine               -       Ask questions and discuss at: https://github.com/AlmasB/FXGL/discussions
19:58:14.027 [JavaFX Application Thread] INFO  Engine               -              Join the FXGL chat at: https://gitter.im/AlmasB/FXGL
19:58:14.264 [FXGL Background Thread 1 ] WARN  SystemBundleService  - Failed to load: java.io.FileNotFoundException: /Users/chengenzhao/Downloads/app/system/fxgl.bundle (No such file or directory)
19:58:14.272 [FXGL Background Thread 1 ] INFO  FXGLApplication      - FXGL initialization took: 0.225 sec
19:58:14.278 [JavaFX Application Thread] WARN  EmbeddedPaneWindow   - EmbeddedPane not attached to Stage
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x000000019bfbc40c, pid=56490, tid=26371
#
# JRE version: OpenJDK Runtime Environment (24.0+36) (build 24+36-3646)
# Java VM: OpenJDK 64-Bit Server VM (24+36-3646, mixed mode, tiered, compressed class ptrs, z gc, bsd-aarch64)
# Problematic frame:
# C  [libsystem_platform.dylib+0x340c]  _platform_memmove+0x1bc
#
# Core dump will be written. Default location: /cores/core.56490
#
# An error report file with more information is saved as:
# /Users/chengenzhao/Downloads/app/hs_err_pid56490.log
19:58:14.330 [FXGL Background Thread 4 ] INFO  FXGLApplication      - Game initialization took: 0.045 sec
#
# If you would like to submit a bug report, please visit:
#   https://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

[chengenzhao]

It works fine when I use full JDK and JavaFX
so I guess it lacks some dependencies
but don't know which mods are missing here

[chengenzhao]

I guess the problem is about the media
since I've reproduced the crash by these codes:

    try {
      Media audio = new Media(getClass().getClassLoader().getResource("assets/music/maou_game_theme01.mp3").toExternalForm());
      var mediaPlayer = new MediaPlayer(audio);
      mediaPlayer.play();
    }catch (Exception e){
      e.printStackTrace();
    }

this code cause the crash

new Media(getClass().getClassLoader().getResource("assets/music/maou_game_theme01.mp3").toExternalForm());

[chengenzhao]

I guess the classloader get resources method should not used any more

[chengenzhao]

Not sure whether it is related to this issue:
openjdk/jfx#1839