Package dev.langchain4j.internal

Class VirtualThreadUtils

java.lang.Object

dev.langchain4j.internal.VirtualThreadUtils

public class VirtualThreadUtils
extends Object

Utility class for working with virtual threads introduced in Java 21. This class provides a mechanism to create a virtual thread per task executor through reflection, enabling compatibility with both Java versions that support virtual threads and those that do not.

Author:

Konstantin Pavlov

Constructor Summary

Constructors

Constructor	Description
VirtualThreadUtils()

Method Summary

Modifier and Type	Method	Description
static @Nullable ExecutorService	createVirtualThreadExecutor(Supplier<@Nullable ExecutorService> fallback)	Creates a virtual thread per task executor using reflection.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

VirtualThreadUtils

public VirtualThreadUtils()

Method Details

createVirtualThreadExecutor

public static @Nullable ExecutorService createVirtualThreadExecutor(Supplier<@Nullable ExecutorService> fallback)

Creates a virtual thread per task executor using reflection. This allows code to run on both Java 21+ (where virtual threads are available) and earlier Java versions.

Parameters:

fallback - a Supplier that provides a fallback ExecutorService when virtual threads are not available.

Returns:

an ExecutorService using virtual threads if supported, otherwise a fallback implementation.