Explore the mystery of the high efficiency of golang coroutines

Explore the mystery of the high efficiency of golang coroutines

With the rapid development of modern software development, more and more developers are beginning to pay attention to and use the Go language ( Golang) language. Golang, as an open source statically typed language, is famous for its efficient concurrency model. Among them, Goroutine, as one of the features of Golang, is widely used in concurrent programming. This article will delve into the mystery of the high efficiency of Golang coroutines and demonstrate its advantages through specific code examples.

Golang’s coroutines are the core component of its concurrency model. Compared with traditional threads, coroutines have lower memory consumption and higher efficiency. This is due to Golang's scheduler (Scheduler) being able to make full use of multi-core processors to achieve efficient concurrent execution. Next, we will use a simple example to demonstrate the high efficiency of Golang coroutines.

package main

import (
    "fmt"
    "runtime"
    "sync"
)

func main() {
    runtime.GOMAXPROCS(4) //Set the number of CPU cores used

    var wg sync.WaitGroup

    for i := 1; i <= 10; i {
        wg.Add(1)

        go func(num int) {
            defer wg.Done()
            fmt.Printf("Goroutine %d
", num)
        }(i)
    }

    wg.Wait()
    fmt.Println("All Goroutines are finished!")
}

In the above example, we first set the Golang program to use up to 4 CPU cores through runtime.GOMAXPROCS(4). Then use sync.WaitGroup to wait for all coroutines to complete execution. Then enter a loop, start 10 coroutines and print the corresponding numbers. Finally, wg.Wait() waits for all coroutines to be executed and outputs "All Goroutines are finished!".

Run this code, you will find that Golang's coroutines can be executed concurrently efficiently, and compared with the traditional thread model, the creation and destruction costs of coroutines are lower, so they are suitable for large-scale concurrency scenarios.

In addition to efficient concurrent execution, Golang's coroutines also have excellent scheduling features. Golang's scheduler is responsible for evenly allocating coroutines to available CPU cores to avoid deadlocks and resource contention. This is particularly important on multi-core processors, which can make full use of hardware resources and improve the overall performance of the system.

In general, the efficiency of Golang's coroutines is due to both its lightweight design and its excellent scheduler. In actual project development, rational use of Golang's coroutines can effectively improve the concurrent processing capabilities of the program and make the program more efficient and stable.

Through the exploration and sample code of this article, I believe readers can better understand the mystery of the high efficiency of Golang coroutines, and can also better use Golang's concurrency model to improve the efficiency and quality of software development. I hope this article is helpful to you, and welcome to continue to pay attention to more content about Golang and concurrent programming.

The above is the detailed content of Explore the mystery of the high efficiency of golang coroutines. For more information, please follow other related articles on the PHP Chinese website!