Prompts for GPT

User

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()

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()
}

Please update the code as required, and remember to also update the test cases.

DevChat

First, we need to change the type of mutex in the GoPool struct from sync.Mutex to sync.Locker. This way, we can use any lock that implements the sync.Locker interface, including sync.Mutex and spinlock.SpinLock.

Next, we can add a function of type Option that takes a *GoPool argument and modifies its properties. We can add a WithLock function that takes a sync.Locker argument and sets it as the lock for GoPool.

Finally, we need to modify the NewGoPool function to accept a series of Option functions as arguments and apply these functions after creating the GoPool.

Below is the modified gopool.go file:

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 ...

In this implementation, the NewGoPool function now accepts a series of Option functions as arguments and applies these functions after creating the GoPool. The WithLock function takes a sync.Locker argument and sets it as the lock for GoPool.

Next, we need to update the test cases to use the new NewGoPool function. Below is the modified gopool_test.go file:

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 ...

In this implementation, we use the WithLock function to set the lock for GoPool as spinlock.SpinLock.

User

"github.com/daniel-hutao/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()

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()
        }()
    }
}

Please add test cases using mutex, which means the current 3 cases should become 5.

DevChat

As per your request, I will add two new test cases for GoPool, one using sync.Mutex and the other using spinlock.SpinLock. Below is the modified gopool_test.go file:

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()
            }()
        }
    }
}

In this implementation, I added two new test cases TestGoPoolWithMutex and TestGoPoolWithSpinLock, which test GoPool using sync.Mutex and spinlock.SpinLock respectively. I also added two new benchmark test cases BenchmarkGoPoolWithMutex and BenchmarkGoPoolWithSpinLock, which benchmark GoPool using sync.Mutex and spinlock.SpinLock respectively.