How to use

VMThreadMTFeature

in

com.oracle.svm.hosted.thread

@Override
public void beforeCompilation(BeforeCompilationAccess config) {
  if (SubstrateOptions.MultiThreaded.getValue()) {
    VMThreadMTFeature threadFeature = ImageSingletons.lookup(VMThreadMTFeature.class);
    vmThreadSize = threadFeature.getVMThreadSize();
  }
}

  @Override
  public void beforeAnalysis(BeforeAnalysisAccess access) {
    if (SubstrateOptions.MultiThreaded.getValue()) {
      /*
       * The per-thread JNI environment is located at offset 0 of each thread's {@link
       * VMThread} structure. For that reason, it has the same address as the VMThread and can
       * be used to restore the designated VMThread register when transitioning from native to
       * Java.
       */
      VMThreadMTFeature mt = ImageSingletons.lookup(VMThreadMTFeature.class);
      mt.setThreadLocalAtOffsetZero(JNIThreadLocalEnvironment.jniFunctions);
    }
  }
}

Registration r = new Registration(invocationPlugins, threadLocalClass);
Class<?> valueClass = VMThreadLocalInfo.getValueClass(threadLocalClass);
registerAccessors(r, valueClass, false);
registerAccessors(r, valueClass, true);