给 GPT 的 Prompts

avatar User

gopool.go package gopool

import ( "sync" )

type Task func()

type GoPool struct { Workers []*Worker MaxWorkers int workerStack []int taskQueue chan Task mutex sync.Mutex cond *sync.Cond }

func NewGoPool(maxWorkers int) *GoPool { pool := &GoPool{ MaxWorkers: maxWorkers, Workers: make([]*Worker, maxWorkers), workerStack: make([]int, maxWorkers), taskQueue: make(chan Task, 1e6), } pool.cond = sync.NewCond(&pool.mutex) for i := 0; i < maxWorkers; i++ { worker := newWorker() pool.Workers[i] = worker pool.workerStack[i] = i worker.start(pool, i) } go pool.dispatch() return pool }

func (p *GoPool) AddTask(task Task) { p.taskQueue <- task }

func (p *GoPool) Release() { close(p.taskQueue) p.cond.L.Lock() for len(p.workerStack) != p.MaxWorkers { p.cond.Wait() } p.cond.L.Unlock() for _, worker := range p.Workers { close(worker.TaskQueue) } p.Workers = nil p.workerStack = nil }

func (p *GoPool) popWorker() int { p.mutex.Lock() workerIndex := p.workerStack[len(p.workerStack)-1] p.workerStack = p.workerStack[:len(p.workerStack)-1] p.mutex.Unlock() return workerIndex }

func (p *GoPool) pushWorker(workerIndex int) { p.mutex.Lock() p.workerStack = append(p.workerStack, workerIndex) p.mutex.Unlock() p.cond.Signal() }

func (p *GoPool) dispatch() { for task := range p.taskQueue { p.cond.L.Lock() for len(p.workerStack) == 0 { p.cond.Wait() } p.cond.L.Unlock() workerIndex := p.popWorker() p.Workers[workerIndex].TaskQueue <- task } }

worker.go package gopool

type Worker struct { TaskQueue chan Task }

func newWorker() *Worker { return &Worker{ TaskQueue: make(chan Task, 1), } }

func (w *Worker) start(pool *GoPool, workerIndex int) { go func() { for task := range w.TaskQueue { if task != nil { task() } pool.pushWorker(workerIndex) } }() }

gopool_test.go package gopool

import ( "sync" "testing" "time" )

func TestGoPool(t *testing.T) { pool := NewGoPool(100) for i := 0; i < 1000; i++ { pool.AddTask(func() { time.Sleep(10 * time.Millisecond) }) } pool.Release() }

func BenchmarkGoPool(b *testing.B) { var wg sync.WaitGroup var taskNum = int(1e6) pool := NewGoPool(1e4)

b.ResetTimer()
for i := 0; i < b.N; i++ {
    wg.Add(taskNum)
    for num := 0; num < taskNum; num++ {
        pool.AddTask(func() {
            time.Sleep(10 * time.Millisecond)
            wg.Done()
        })
    }
}
wg.Wait()
// pool.Release()

}

func BenchmarkGoroutines(b *testing.B) { var wg sync.WaitGroup var taskNum = int(1e6)

for i := 0; i < b.N; i++ {
    wg.Add(taskNum)
    for num := 0; num < taskNum; num++ {
        go func() {
            time.Sleep(10 * time.Millisecond)
            wg.Done()
        }()
    }
}

}

我想尝试通过 Functional Options 模式给 GoPool 添加配置，Option 中我希望先支持配置 GoPool 中的锁是使用互斥锁还是自旋锁，所以 GoPool.mutex 可以改成 lock sync.Locker。我已经找到了一个自旋锁的实现，地址是 github.com/daniel-hutao/spinlock，用法示例：

package main

import (
    "github.com/daniel-hutao/spinlock"
)

func main() {
    var sl spinlock.SpinLock

    sl.Lock()
    // critical section here
    sl.Unlock()
}

请按照要求更新代码，记得测试用例也需要更新。

avatar DevChat

首先，我们需要在 GoPool 结构体中将 mutex 的类型从 sync.Mutex 更改为 sync.Locker，这样我们就可以使用任何实现了 sync.Locker 接口的锁，包括 sync.Mutex 和 spinlock.SpinLock。

然后，我们可以添加一个 Option 类型的函数，该函数接受一个 *GoPool 参数并修改其属性。我们可以添加一个 WithLock 函数，该函数接受一个 sync.Locker 参数并将其设置为 GoPool 的锁。

最后，我们需要修改 NewGoPool 函数，使其接受一系列 Option 函数作为参数，并在创建 GoPool 后应用这些函数。

以下是修改后的 gopool.go 文件：

package gopool

import (
    "sync"
    "github.com/daniel-hutao/spinlock"
)

type Task func()

type GoPool struct {
    Workers    []*Worker
    MaxWorkers int
    workerStack []int
    taskQueue chan Task
    lock sync.Locker
    cond *sync.Cond
}

type Option func(*GoPool)

func WithLock(lock sync.Locker) Option {
    return func(p *GoPool) {
        p.lock = lock
        p.cond = sync.NewCond(p.lock)
    }
}

func NewGoPool(maxWorkers int, opts ...Option) *GoPool {
    pool := &GoPool{
        MaxWorkers: maxWorkers,
        Workers:    make([]*Worker, maxWorkers),
        workerStack: make([]int, maxWorkers),
        taskQueue: make(chan Task, 1e6),
        lock: new(sync.Mutex),
    }
    for _, opt := range opts {
        opt(pool)
    }
    if pool.cond == nil {
        pool.cond = sync.NewCond(pool.lock)
    }
    for i := 0; i < maxWorkers; i++ {
        worker := newWorker()
        pool.Workers[i] = worker
        pool.workerStack[i] = i
        worker.start(pool, i)
    }
    go pool.dispatch()
    return pool
}

// ... rest of the code ...

在这个实现中，NewGoPool 函数现在接受一系列 Option 函数作为参数，并在创建 GoPool 后应用这些函数。WithLock 函数接受一个 sync.Locker 参数并将其设置为 GoPool 的锁。

然后，我们需要更新测试用例以使用新的 NewGoPool 函数。以下是修改后的 gopool_test.go 文件：

package gopool

import (
    "sync"
    "testing"
    "time"
    "github.com/daniel-hutao/spinlock"
)

func TestGoPool(t *testing.T) {
    pool := NewGoPool(100, WithLock(new(spinlock.SpinLock)))
    for i := 0; i < 1000; i++ {
        pool.AddTask(func() {
            time.Sleep(10 * time.Millisecond)
        })
    }
    pool.Release()
}

// ... rest of the code ...

在这个实现中，我们使用 WithLock 函数来设置 GoPool 的锁为 spinlock.SpinLock。

avatar User

gopool_test.go package gopool

import ( "sync" "testing" "time"

"github.com/daniel-hutao/spinlock"

)

func TestGoPool(t *testing.T) { pool := NewGoPool(100, WithLock(new(spinlock.SpinLock))) for i := 0; i < 1000; i++ { pool.AddTask(func() { time.Sleep(10 * time.Millisecond) }) } pool.Release() }

func BenchmarkGoPool(b *testing.B) { var wg sync.WaitGroup var taskNum = int(1e6) pool := NewGoPool(1e4)

b.ResetTimer()
for i := 0; i < b.N; i++ {
    wg.Add(taskNum)
    for num := 0; num < taskNum; num++ {
        pool.AddTask(func() {
            time.Sleep(10 * time.Millisecond)
            wg.Done()
        })
    }
}
wg.Wait()
pool.Release()

}

func BenchmarkGoroutines(b *testing.B) { var wg sync.WaitGroup var taskNum = int(1e6)

for i := 0; i < b.N; i++ {
    wg.Add(taskNum)
    for num := 0; num < taskNum; num++ {
        go func() {
            time.Sleep(10 * time.Millisecond)
            wg.Done()
        }()
    }
}

}

请增加使用 mutex 的测试用例，也就是当前的3个用例应该变成5个

avatar DevChat

根据你的要求，我将为 GoPool 添加两个新的测试用例，一个使用 sync.Mutex，另一个使用 spinlock.SpinLock。以下是修改后的 gopool_test.go 文件：

package gopool

import (
    "sync"
    "testing"
    "time"

    "github.com/daniel-hutao/spinlock"
)

func TestGoPoolWithMutex(t *testing.T) {
    pool := NewGoPool(100, WithLock(new(sync.Mutex)))
    for i := 0; i < 1000; i++ {
        pool.AddTask(func() {
            time.Sleep(10 * time.Millisecond)
        })
    }
    pool.Release()
}

func TestGoPoolWithSpinLock(t *testing.T) {
    pool := NewGoPool(100, WithLock(new(spinlock.SpinLock)))
    for i := 0; i < 1000; i++ {
        pool.AddTask(func() {
            time.Sleep(10 * time.Millisecond)
        })
    }
    pool.Release()
}

func BenchmarkGoPoolWithMutex(b *testing.B) {
    var wg sync.WaitGroup
    var taskNum = int(1e6)
    pool := NewGoPool(1e4, WithLock(new(sync.Mutex)))

    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        wg.Add(taskNum)
        for num := 0; num < taskNum; num++ {
            pool.AddTask(func() {
                time.Sleep(10 * time.Millisecond)
                wg.Done()
            })
        }
    }
    wg.Wait()
    pool.Release()
}

func BenchmarkGoPoolWithSpinLock(b *testing.B) {
    var wg sync.WaitGroup
    var taskNum = int(1e6)
    pool := NewGoPool(1e4, WithLock(new(spinlock.SpinLock)))

    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        wg.Add(taskNum)
        for num := 0; num < taskNum; num++ {
            pool.AddTask(func() {
                time.Sleep(10 * time.Millisecond)
                wg.Done()
            })
        }
    }
    wg.Wait()
    pool.Release()
}

func BenchmarkGoroutines(b *testing.B) {
    var wg sync.WaitGroup
    var taskNum = int(1e6)

    for i := 0; i < b.N; i++ {
        wg.Add(taskNum)
        for num := 0; num < taskNum; num++ {
            go func() {
                time.Sleep(10 * time.Millisecond)
                wg.Done()
            }()
        }
    }
}

在这个实现中，我添加了两个新的测试用例 TestGoPoolWithMutex 和 TestGoPoolWithSpinLock，分别测试使用 sync.Mutex 和 spinlock.SpinLock 的 GoPool。我还添加了两个新的基准测试用例 BenchmarkGoPoolWithMutex 和 BenchmarkGoPoolWithSpinLock，分别基准测试使用 sync.Mutex 和 spinlock.SpinLock 的 GoPool。