区域描述。SaveCurrent()冻结Unity的更新循环,尽管有新线程

Debug.Log("create thread");
m_saveThread = new Thread(() =>
{
    // Start saving process in another thread.
    Debug.Log("Starting work in thread");
    currentAreaDescription = AreaDescription.SaveCurrent();
    Debug.Log("SaveCurrent completed");
    AreaDescription.Metadata metadata = currentAreaDescription.GetMetadata();
    metadata.m_name = name;
    currentAreaDescription.SaveMetadata(metadata);
});

Debug.Log("Start thread");
m_saveThread.Start();
Debug.Log("thread started");

我的问题是,即使我在一个新线程中运行保存代码,UI仍然被冻结,直到 AreaDescription.SaveCurrent() Update() :

public void Update()
{
    Debug.Log("Update!");
    //...
}

这是摘自 adb logcat -s Unity 在我保存时:

08-23 15:11:43.746 18474 18518 I Unity   : Update!
08-23 15:11:43.747 18474 18518 I Unity   : Save confirmed!
08-23 15:11:43.747 18474 18518 I Unity   : overlay
08-23 15:11:43.747 18474 18518 I Unity   : create thread
08-23 15:11:43.748 18474 18518 I Unity   : Start thread
08-23 15:11:43.753 18474 18518 I Unity   : thread started
08-23 15:11:43.754 18474 18836 I Unity   : Starting work in thread
08-23 15:11:44.960 18474 18518 I Unity   : Update!
08-23 15:11:44.961 18474 18518 I Unity   : Currently saving!
08-23 15:11:44.964 18474 18836 I Unity   : SaveCurrent completed
08-23 15:11:44.977 18474 18518 I Unity   : Update!

从时间戳可以看出,对于整个200毫秒 SaveCurrent() 跑, 更新() 没有被呼叫。

事实上 在后台运行?

顺便说一句,这段代码几乎直接改编自 Google's own sample repo 我创造了 an issue 关于它,目前没有回应。