Does golang support multi-threading?

Golang supports multi-threading. Golang has a lightweight concurrency mechanism called "goroutine". It also provides a communication mechanism "channel" that can be used for communication between threads.

Operating system for this tutorial: Windows 10 system, Go1.20.1 version, Dell G3 computer.

golang supports multi-threading. Golang has a lightweight concurrency mechanism called "goroutine", and also provides a communication mechanism "channel" that can be used for communication between threads.

Goroutine is a lightweight thread (coroutine) managed by the Go language runtime library. It is different from operating system threads and can be executed on a single operating system thread and can use the CPU efficiently. . You can create a new goroutine by adding go before the go keyword, for example:

go func() {
    // some code here
}()

Goroutine is very suitable for handling concurrent and asynchronous tasks, such as network requests, IO operations or when performing computationally intensive tasks. Goroutine can be used to avoid Blocks the execution of the entire program. In addition, Goroutine can also help implement concurrency models, such as implementing queues based on the producer-consumer model, or decomposing tasks through multiple Goroutines for file compression.

Channel is the inter-thread communication mechanism provided by Golang, which can safely transfer data between Goroutines. By creating a channel, multiple Goroutines can send and receive data to each other. When a Goroutine wants to send data to the channel, it will copy the data to the channel; when another Goroutine needs to receive data from the channel, it will copy the data in the channel to its own memory space.

The following is an example demonstrating how to use goroutine and channel:

package main
import "fmt"
func worker(id int, jobs <-chan int, results chan<- int) {
    for j := range jobs {
        fmt.Println("worker", id, "processing job", j)
        results <- j * 2
    }
}
func main() {
    jobs := make(chan int, 100)
    results := make(chan int, 100)
    // 创建3个goroutine并行处理jobs
    for w := 1; w <= 3; w++ {
        go worker(w, jobs, results)
    }

The above is the detailed content of Does golang support multi-threading?. For more information, please follow other related articles on the PHP Chinese website!