Golang中同步机制对于游戏开发性能的提升

package main

import (
    "fmt"
    "time"
)

type GameObject struct {
    X, Y float64
}

func (go *GameObject) Update(deltaTime float64) {
    go.X += 0.5
    go.Y += 0.5
}

func (go *GameObject) Render() {
    fmt.Printf("Object at (%.2f, %.2f)
", go.X, go.Y)
}

func main() {
    go func() {
        for {
            // 更新游戏对象的逻辑放在一个独立的Goroutine中
            gameObject.Update(1.0) // 假设每帧的间隔为1秒
            time.Sleep(time.Second)
        }
    }()

    for {
        // 在主Goroutine中进行游戏对象的渲染
        gameObject.Render()
        time.Sleep(time.Second / 60) // 每秒渲染60帧
    }
}

package main

import (
    "fmt"
    "sync"
)

var wg sync.WaitGroup

func update(ch chan int) {
    for i := 0; i < 100; i++ {
        fmt.Println("Update:", i)
        ch <- i
    }
    close(ch)
    wg.Done()
}

func render(ch chan int) {
    for i := range ch {
        fmt.Println("Render:", i)
    }
    wg.Done()
}

func main() {
    ch := make(chan int)
    wg.Add(1)
    go update(ch)
    wg.Add(1)
    go render(ch)
    wg.Wait()
}

package main

import (
    "fmt"
    "sync"
    "time"
)

var wg sync.WaitGroup

const (
    totalIterations = 1000000
)

func testWithMutex() {
    var mu sync.Mutex
    var count int
    for i := 0; i < totalIterations; i++ {
        mu.Lock()
        count++
        mu.Unlock()
    }
    wg.Done()
}

func testWithoutMutex() {
    var count int
    for i := 0; i < totalIterations; i++ {
        count++
    }
    wg.Done()
}

func main() {
    wg.Add(2)
    start := time.Now()
    go testWithMutex()
    go testWithMutex()
    wg.Wait()
    fmt.Println("With Mutex:", time.Since(start))

    wg.Add(2)
    start = time.Now()
    go testWithoutMutex()
    go testWithoutMutex()
    wg.Wait()
    fmt.Println("Without Mutex:", time.Since(start))
}