Practical sharing of concurrent calling of Golang functions
As an efficient, lightweight programming language with good concurrency support, Golang's concurrent function calling is a very important feature. In this article, this article will share some practical experience about concurrent calls of Golang functions, hoping to be helpful to Golang developers.
1. The use of Goroutine
Goroutine is the basis for Golang to achieve concurrency. Using Goroutine to call a function is very simple, just add the go keyword in front of the function:
go funcName()
The code shown above can call the funcName function in a new Goroutine. The specific code implementation and parameters of the calling function depend on the situation.
2. Call a group of functions concurrently
In Golang, a group of functions can be called at the same time. Using sync.WaitGroup can help coordinate the tasks performed by different Goroutines. The following is a sample code that calls a group of functions concurrently:
// 定义一个 WaitGroup var wg sync.WaitGroup func main() { // 增加 WaitGroup 的计数器值 wg.Add(3) // 并发调用 3 个函数 go func1() go func2() go func3() // 等待所有进行中的 Goroutines 完成任务 wg.Wait() } // func1 函数 func func1() { // 告诉 WaitGroup 函数执行完毕 defer wg.Done() // 执行 func1 的操作 } // func2 函数 func func2() { // 告诉 WaitGroup 函数执行完毕 defer wg.Done() // 执行 func2 的操作 } // func3 函数 func func3() { // 告诉 WaitGroup 函数执行完毕 defer wg.Done() // 执行 func3 的操作 }
3. Use channels to implement concurrent calls
Using channels allows multiple Goroutines to communicate with each other and implement concurrent calls. The following is a sample code for concurrently calling a set of functions:
func main() { // 定义 channel c := make(chan int) // 并发调用 3 个函数 go func1(c) go func2(c) go func3(c) // 等待所有 Goroutine 执行完毕 for i := 0; i < 3; i++ { <-c } } // func1 函数 func func1(c chan<- int) { // 执行 func1 的操作 // 发送信号 c <- 1 } // func2 函数 func func2(c chan<- int) { // 执行 func2 的操作 // 发送信号 c <- 2 } // func3 函数 func func3(c chan<- int) { // 执行 func3 的操作 // 发送信号 c <- 3 }
4. Use multiple channels to implement concurrent calls
If you need to pass multiple parameters or data in different Goroutines, you can use Multiple channels implement concurrent calls. The following is a sample code that calls a group of functions concurrently:
func main() { // 定义 channel c1 := make(chan int) c2 := make(chan string) // 并发调用 3 个函数 go func1(c1, c2) go func2(c2) go func3(c1) // 等待所有 Goroutine 执行完毕 for i := 0; i < 2; i++ { <-c1 } } // func1 函数 func func1(c1 chan<- int, c2 chan<- string) { // 执行 func1 的操作 // 发送数据 c1 <- 1 c2 <- "hello" } // func2 函数 func func2(c2 <-chan string) { // 执行 func2 的操作 // 读取数据 data := <-c2 } // func3 函数 func func3(c1 <-chan int) { // 执行 func3 的操作 // 读取数据 data := <-c1 }
The above is a practical experience sharing about concurrent calling of Golang functions. By properly using Goroutine, channel and sync.WaitGroup, efficient, safe and reliable concurrent calls of multiple functions can be achieved. In practice, you also need to pay attention to reasonably controlling the number of Goroutines to avoid problems such as deadlock and resource competition.
The above is the detailed content of Practical sharing of concurrent calling of Golang functions. For more information, please follow other related articles on the PHP Chinese website!

Goimpactsdevelopmentpositivelythroughspeed,efficiency,andsimplicity.1)Speed:Gocompilesquicklyandrunsefficiently,idealforlargeprojects.2)Efficiency:Itscomprehensivestandardlibraryreducesexternaldependencies,enhancingdevelopmentefficiency.3)Simplicity:

C is more suitable for scenarios where direct control of hardware resources and high performance optimization is required, while Golang is more suitable for scenarios where rapid development and high concurrency processing are required. 1.C's advantage lies in its close to hardware characteristics and high optimization capabilities, which are suitable for high-performance needs such as game development. 2.Golang's advantage lies in its concise syntax and natural concurrency support, which is suitable for high concurrency service development.

Golang excels in practical applications and is known for its simplicity, efficiency and concurrency. 1) Concurrent programming is implemented through Goroutines and Channels, 2) Flexible code is written using interfaces and polymorphisms, 3) Simplify network programming with net/http packages, 4) Build efficient concurrent crawlers, 5) Debugging and optimizing through tools and best practices.

The core features of Go include garbage collection, static linking and concurrency support. 1. The concurrency model of Go language realizes efficient concurrent programming through goroutine and channel. 2. Interfaces and polymorphisms are implemented through interface methods, so that different types can be processed in a unified manner. 3. The basic usage demonstrates the efficiency of function definition and call. 4. In advanced usage, slices provide powerful functions of dynamic resizing. 5. Common errors such as race conditions can be detected and resolved through getest-race. 6. Performance optimization Reuse objects through sync.Pool to reduce garbage collection pressure.

Go language performs well in building efficient and scalable systems. Its advantages include: 1. High performance: compiled into machine code, fast running speed; 2. Concurrent programming: simplify multitasking through goroutines and channels; 3. Simplicity: concise syntax, reducing learning and maintenance costs; 4. Cross-platform: supports cross-platform compilation, easy deployment.

Confused about the sorting of SQL query results. In the process of learning SQL, you often encounter some confusing problems. Recently, the author is reading "MICK-SQL Basics"...

The relationship between technology stack convergence and technology selection In software development, the selection and management of technology stacks are a very critical issue. Recently, some readers have proposed...

Golang ...


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

SublimeText3 English version
Recommended: Win version, supports code prompts!

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 Chinese version
Chinese version, very easy to use

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function