zh-CN：Trans for 'Clarify when nextTickQueue is processed' #2026
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willin
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Feb 2, 2019
| @@ -199,7 +199,7 @@ timeout | |||
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| ### 理解 `process.nextTick()` | |||
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| 您可能已经注意到 `process.nextTick()` 在关系图中没有显示，即使它是异步 API 的一部分。这是因为 `process.nextTick()` 在技术上不是事件循环的一部分。相反，无论事件循环的当前阶段如何，都将在当前操作完成后处理 `nextTickQueue`。 | |||
| 您可能已经注意到 `process.nextTick()` 在关系图中没有显示，即使它是异步 API 的一部分。这是因为 `process.nextTick()` 在技术上不是事件循环的一部分。相反，无论事件循环的当前阶段如何，都将在当前操作完成后处理 `nextTickQueue`。这里的一个*操作*被视作为一个从 C++ 底层处理开始过度，并且处理需要执行的 JavaScript 代码。 | |||
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| 回顾我们的关系图，任何时候您调用 `process.nextTick()` 在给定的阶段中，所有传递到 `process.nextTick()` 的回调将在事件循环继续之前得到解决。这可能会造成一些糟糕的情况, 因为**它允许您通过进行递归 `process.nextTick()` 来“饿死”您的 I/O 调用**，阻止事件循环到达 **轮询** 阶段。 | |||
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直译 饿死 不够生动形象。。。 递归更像撑死。
直接说 阻塞I/O 会不会好一些
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I/O调用因为异步轮询不断调用process.nextTick()始终得不到调用，所以始终处于“饥饿”状态，这是对的。而是说时间轮询队列被撑死了。
我们等一下其它人看法吧，我通读此文感觉这里的确是“饿死”，是说顺序执行的I/O始终得不到机会执行。
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原文:
This can create some bad situations because it allows you to "starve" your I/O by making recursive process.nextTick() calls, which prevents the event loop from reaching the poll phase.
IMHO, 我是觉得没什么太大问题 :)
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Ref：#1804
@nodejs/nodejs-cn