R3944Realms/ModernFix-fix
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Fix random CMEs from NightConfigWatchThrottler

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embeddedt 2026-05-18 10:05:23 -04:00
parent a6c03e9928
commit ae20fa17c9
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GPG Key ID: A69433EC199B5613
1 changed files with 15 additions and 3 deletions
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src/main/java/org/embeddedt/modernfix/forge/config/NightConfigWatchThrottler.java
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@ -22,7 +22,8 @@ public class NightConfigWatchThrottler {
@SuppressWarnings("rawtypes")
public static void throttle() {
Map watchedDirs = ObfuscationReflectionHelper.getPrivateValue(FileWatcher.class, FileWatcher.defaultInstance(), "watchedDirs");
ObfuscationReflectionHelper.setPrivateValue(FileWatcher.class, FileWatcher.defaultInstance(), new ForwardingMap() {
Thread launchThread = Thread.currentThread();
Map watchedDirsWrapper = new ForwardingMap() {
@Override
protected Map delegate() {
return watchedDirs;
@ -44,13 +45,24 @@ public class NightConfigWatchThrottler {
public Iterator iterator() {
// iterator() is called at the beginning of each iteration of the watch loop,
// so it is a good spot to inject the delay.
if (Thread.currentThread() != launchThread) {
LockSupport.parkNanos(DELAY);
}
return super.iterator();
}
};
}
return cachedValues;
}
}, "watchedDirs");
};
// Force all classes related to the iterator to be loaded ahead of time. This is necessary to prevent
// a ConcurrentModificationException from being thrown inside ModLauncher when the NightConfig file
// watcher thread loads forwarding collection classes while the main thread is still mutating the
// launch plugin map.
//noinspection StatementWithEmptyBody
for (var ignored : watchedDirsWrapper.values()) {
}
ObfuscationReflectionHelper.setPrivateValue(FileWatcher.class, FileWatcher.defaultInstance(), watchedDirsWrapper, "watchedDirs");
}
}