void
JvmtiEventControllerPrivate::env_dispose(JvmtiEnvBase *env) {

  {- -------------------------------------------
  (1) (assert)
      ---------------------------------------- -}

      assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");

  {- -------------------------------------------
  (1) (トレース出力)
      ---------------------------------------- -}

      EC_TRACE(("JVMTI [*] # env dispose"));

  {- -------------------------------------------
  (1) この JvmtiEnv に関する全てのイベント通知を(コールバック関数を NULL に設定することで)無効にしておく
      ---------------------------------------- -}

      // Before the environment is marked disposed, disable all events on this
      // environment (by zapping the callbacks).  As a result, the disposed
      // environment will not call event handlers.
      set_event_callbacks(env, NULL, 0);
      for (jint extension_event_index = EXT_MIN_EVENT_TYPE_VAL;
           extension_event_index <= EXT_MAX_EVENT_TYPE_VAL;
           ++extension_event_index) {
        set_extension_event_callback(env, extension_event_index, NULL);
      }

  {- -------------------------------------------
  (1) env 引数に対して, JvmtiEnvBase::env_dispose() を呼び出す.
      ---------------------------------------- -}

      // Let the environment finish disposing itself.
      env->env_dispose();
    }