Navigation
Home Moments Blog Gallery Snippets About
Night City
Night City Search Engines Live Web Editor

 

Categories
AI (6) Culture (4) Data Protection (1) Desiging (3) Feelings (42) Gaming (5) Hacking (4) Mark-up (3) Programming (406) Project Management (4) Technology (63) UNIX/Linux (40) Undefined (2) Version Control (9) Windows (4) macOS (6)
Date
Nov. 7th, 2025
 
2025年十一月初七

Post: iOS 面试题: GCD Queue

iOS 面试题: GCD Queue

Published 12:10 Oct 14, 2015.

Created by @ezra. Categorized in #Programming, and tagged as #iOS.

Source format: Markdown

Table of Content

最近遇到和看到的一些面试题。

GCD里面有哪几种Queue?你自己建立过串行queue吗?背后的线程模型是什么样的?

  • 主队列 dispatch_main_queue(); 串行 ,更新UI
  • 全局队列 dispatch_global_queue(); 并行,四个优先级: background,low,default,high
  • 自定义队列 dispatch_queue_t queue; 可以自定义是并行: DISPATCH_QUEUE_CONCURRENT 或者串行 DISPATCH_QUEUE_SERIAL
Earlyer Later
Related Posts
Jan
26
发条消息就能破解iPhone？
Published 14:01 Jan 26, 2024 by @ezra.
#Hacking# 前几天在网上冲浪的时候看到了一条相当震撼的消息： 简单来讲，就是主打封闭安全的 iPhone ，不仅被攻击者发现了漏洞成功入侵，完全控制整个手机。 更加抽象的是入侵的还是知名杀毒软件卡巴斯基团队成员的...
Post
Jun
13
WWDC 2018 Summary for iOS developers
Published 12:06 Jun 13, 2018 by @ezra.
#Programming# WWDC 2018 Summary for iOS developers. What's new in Xcode 10 An ability to launch XCTest and XCUITe...
Post
Jun
13
What’s new in Swift 4.2?
Published 12:06 Jun 13, 2018 by @ezra.
#Programming# Swift 4.2 is the second minor release of Swift 4, and brings with it another raft of awesome improve...
Post
CaveOps © 2007-2025
晋ICP备2022003647号
晋公网安备44030502008881号
Pinned Message
HOTODOGO
The Founder and CEO of Infeca Technology.
Developer, Designer, Blogger.
Big fan of Apple, Love of colour.
Feel free to contact me.
反曲点科技创始人和首席执行官。
开发、设计与写作皆为所长。
热爱苹果、钟情色彩。
随时恭候 垂询。