jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {

  {- -------------------------------------------
  (1) (DTrace のフック点)
      ---------------------------------------- -}

      DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);

  {- -------------------------------------------
  (1) (変数宣言など)
      ---------------------------------------- -}

      jint res = JNI_ERR;

  {- -------------------------------------------
  (1) (DTrace のフック点)(リターン用) (See: DT_RETURN_MARK)
      ---------------------------------------- -}

      DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);

  {- -------------------------------------------
  (1) もし HotSpot がそもそもまだ作成されていなければ, 何もすることはないので, ここで終了.
      ---------------------------------------- -}

      if (!vm_created) {
        res = JNI_ERR;
        return res;
      }

  {- -------------------------------------------
  (1) カレントスレッドの名前を DestroyJavaVM に変更する？ #TODO
      ---------------------------------------- -}

      JNIWrapper("DestroyJavaVM");
      JNIEnv *env;
      JavaVMAttachArgs destroyargs;
      destroyargs.version = CurrentVersion;
      destroyargs.name = (char *)"DestroyJavaVM";
      destroyargs.group = NULL;
      res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
      if (res != JNI_OK) {
        return res;
      }

  {- -------------------------------------------
  (1) カレントスレッドの JavaThreadState を _thread_in_native から _thread_in_vm に変更.
      (JVM_ENTRY() マクロを使っていないので明示的に変更しないといけない)
      ---------------------------------------- -}

      // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
      JavaThread* thread = JavaThread::current();
      ThreadStateTransition::transition_from_native(thread, _thread_in_vm);

  {- -------------------------------------------
  (1) Threads::destroy_vm() を呼んで HotSpot の終了処理を行う.
      ---------------------------------------- -}

      if (Threads::destroy_vm()) {
        // Should not change thread state, VM is gone
        vm_created = false;
        res = JNI_OK;
        return res;
      } else {
        ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
        res = JNI_ERR;
        return res;
      }