JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread))

  {- -------------------------------------------
  (1) (トレース出力) (See: JVMWrapper)
      ---------------------------------------- -}

      JVMWrapper("JVM_IsThreadAlive");

  {- -------------------------------------------
  (1) java_lang_Thread::is_alive() を呼び出すだけ.
      ---------------------------------------- -}

      oop thread_oop = JNIHandles::resolve_non_null(jthread);
      return java_lang_Thread::is_alive(thread_oop);
    JVM_END