How to use buffer channels in Golang function concurrent programming
Buffered channels are an effective way to safely transfer data in concurrent programming of Go functions. They create a fixed-size buffer to store data to be sent or received. Use make to create a buffer channel and specify the capacity. Producer goroutines use chan
Usage of buffer channel in concurrent programming of Go language functions
Buffer channel is very useful in concurrent programming of Go language functions. It Allows safe passing of data between goroutines. It does this by creating a fixed-size buffer that stores the data to be sent or received.
Create buffer channel
bufferedChannel := make(chan int, 10)
The 10
here represents the capacity of the buffer, which can store up to 10 integers.
Communication between goroutines
Producer goroutine can use the chan operator to send data to the channel:
go func() { bufferedChannel <- 42 }()
Consumer goroutine can use the operator to receive data from the channel:
go func() { fmt.Println(<-bufferedChannel) }()
Practical case
To demonstrate the usage of buffered channels, Let us write a simple program that generates random numbers from the producer goroutine and passes it to the consumer goroutine for printing.
The code is as follows:
package main import ( "fmt" "math/rand" "sync" ) func main() { // 创建一个缓冲通道 bufferedChannel := make(chan int, 10) // 生成随机数的 goroutine go func() { for i := 0; i < 100; i++ { bufferedChannel <- rand.Intn(100) } close(bufferedChannel) // 发送完成后关闭通道 }() // 打印随机数的 goroutine var wg sync.WaitGroup wg.Add(1) go func() { defer wg.Done() for { value, ok := <-bufferedChannel if !ok { return // 通道已关闭 } fmt.Println(value) } }() wg.Wait() // 等待消费者 goroutine 结束 }
In this example, we set the capacity of the buffer to 10, which means that the producer goroutine can generate 10 random numbers in parallel , without blocking. The consumer goroutine loops receiving random numbers from the channel until the channel is closed.
The above is the detailed content of How to use buffer channels in Golang function concurrent programming. For more information, please follow other related articles on the PHP Chinese website!

InterfacesandpolymorphisminGoenhancecodereusabilityandmaintainability.1)Defineinterfacesattherightabstractionlevel.2)Useinterfacesfordependencyinjection.3)Profilecodetomanageperformanceimpacts.

TheinitfunctioninGorunsautomaticallybeforethemainfunctiontoinitializepackagesandsetuptheenvironment.It'susefulforsettingupglobalvariables,resources,andperformingone-timesetuptasksacrossanypackage.Here'showitworks:1)Itcanbeusedinanypackage,notjusttheo

Interface combinations build complex abstractions in Go programming by breaking down functions into small, focused interfaces. 1) Define Reader, Writer and Closer interfaces. 2) Create complex types such as File and NetworkStream by combining these interfaces. 3) Use ProcessData function to show how to handle these combined interfaces. This approach enhances code flexibility, testability, and reusability, but care should be taken to avoid excessive fragmentation and combinatorial complexity.

Article discusses iterating through maps in Go, focusing on safe practices, modifying entries, and performance considerations for large maps.Main issue: Ensuring safe and efficient map iteration in Go, especially in concurrent environments and with l

The article discusses creating and manipulating maps in Go, including initialization methods and adding/updating elements.

The article discusses differences between arrays and slices in Go, focusing on size, memory allocation, function passing, and usage scenarios. Arrays are fixed-size, stack-allocated, while slices are dynamic, often heap-allocated, and more flexible.

The article discusses creating and initializing slices in Go, including using literals, the make function, and slicing existing arrays or slices. It also covers slice syntax and determining slice length and capacity.

The article explains how to create and initialize arrays in Go, discusses the differences between arrays and slices, and addresses the maximum size limit for arrays. Arrays vs. slices: fixed vs. dynamic, value vs. reference types.


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

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
