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Stop using named (with counter) VT names due to https://bugs.openjdk.org/browse/JDK-8372410 #51223

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Stop using named (with counter) VT names due to https://bugs.openjdk.org/browse/JDK-8372410 #51223

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daf2b3e
Stop using named (with counter) VT names due to https://bugs.openjdk.…
franz1981 Nov 25, 2025
b4da536
Fix tests
franz1981 Nov 26, 2025
44e3ef9
Fix (partially) doc
franz1981 Nov 26, 2025
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4 changes: 2 additions & 2 deletions ...irtual-threads/runtime/src/main/java/io/quarkus/virtual/threads/VirtualThreadsConfig.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,9 +13,9 @@
public interface VirtualThreadsConfig {

/**
* Virtual thread name prefix. The name of the virtual thread will be the prefix followed by a unique number.
* Virtual thread names. The name of the virtual thread will be the prefix followed by a unique number.
*/
@WithDefault("quarkus-virtual-thread-")
@WithDefault("quarkus-virtual-thread")
Optional<String> namePrefix();

/**
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6 changes: 4 additions & 2 deletions ...tual-threads/runtime/src/main/java/io/quarkus/virtual/threads/VirtualThreadsRecorder.java
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Expand Up @@ -117,8 +117,10 @@ static ExecutorService newVirtualThreadPerTaskExecutorWithName(String prefix)
Class<?> vtbClass = Class.forName("java.lang.Thread$Builder$OfVirtual");
// .name()
if (prefix != null) {
Method name = vtbClass.getMethod("name", String.class, long.class);
vtb = name.invoke(vtb, prefix, 0);
// why this is not using name(prefix, 0)?
// see https://bugs.openjdk.org/browse/JDK-8372410
Method name = vtbClass.getMethod("name", String.class);
vtb = name.invoke(vtb, prefix);
}
// .uncaughtExceptionHandler()
Method uncaughtHandler = vtbClass.getMethod("uncaughtExceptionHandler", Thread.UncaughtExceptionHandler.class);
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