ants/ants_test.go

// MIT License

// Copyright (c) 2018 Andy Pan

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

package ants_test

import (
	"runtime"
	"sync"
	"testing"

	"github.com/panjf2000/ants"
)

var n = 10000000

//func demoFunc() {
//	var n int
//	for i := 0; i < 1000000; i++ {
//		n += i
//	}
//}

//func demoFunc() {
//	var n int
//	for i := 0; i < 10000; i++ {
//		n += i
//	}
//	fmt.Printf("finish task with result:%d\n", n)
//}

func demoFunc() {
	//time.Sleep(time.Millisecond)
	var n int
	for i := 0; i < 1000000; i++ {
		n += i
	}
}

//func TestDefaultPool(t *testing.T) {
//	var wg sync.WaitGroup
//	for i := 0; i < n; i++ {
//		wg.Add(1)
//		ants.Push(func() {
//			demoFunc()
//			wg.Done()
//		})
//	}
//	wg.Wait()
//
//	//t.Logf("pool capacity:%d", ants.Cap())
//	//t.Logf("free workers number:%d", ants.Free())
//
//	t.Logf("running workers number:%d", ants.Running())
//	mem := runtime.MemStats{}
//	runtime.ReadMemStats(&mem)
//	t.Logf("memory usage:%d", mem.TotalAlloc/1024)
//}

//func TestNoPool(t *testing.T) {
//	var wg sync.WaitGroup
//	for i := 0; i < n; i++ {
//		wg.Add(1)
//		go func() {
//			demoFunc()
//			wg.Done()
//		}()
//	}
//
//	wg.Wait()
//	mem := runtime.MemStats{}
//	runtime.ReadMemStats(&mem)
//	t.Logf("memory usage:%d", mem.TotalAlloc/1024)
//}

func TestAntsPoolWithFunc(t *testing.T) {
	var wg sync.WaitGroup
	p, _ := ants.NewPoolWithFunc(50000, func(i interface{}) error {
		demoPoolFunc(i)
		wg.Done()
		return nil
	})
	for i := 0; i < n; i++ {
		wg.Add(1)
		p.Serve(n)
	}
	wg.Wait()

	//t.Logf("pool capacity:%d", ants.Cap())
	//t.Logf("free workers number:%d", ants.Free())

	t.Logf("running workers number:%d", p.Running())
	mem := runtime.MemStats{}
	runtime.ReadMemStats(&mem)
	t.Logf("memory usage:%d", mem.TotalAlloc/GiB)
}

func TestNoPool(t *testing.T) {
	var wg sync.WaitGroup
	for i := 0; i < n; i++ {
		wg.Add(1)
		go func() {
			demoPoolFunc(n)
			wg.Done()
		}()
	}

	wg.Wait()
	mem := runtime.MemStats{}
	runtime.ReadMemStats(&mem)
	t.Logf("memory usage:%d", mem.TotalAlloc/GiB)
}

//func TestCustomPool(t *testing.T) {
//	p, _ := ants.NewPool(30000)
//	var wg sync.WaitGroup
//	for i := 0; i < n; i++ {
//		wg.Add(1)
//		p.Push(func() {
//			demoFunc()
//			//demoFunc()
//			wg.Done()
//		})
//	}
//	wg.Wait()
//
//	//t.Logf("pool capacity:%d", p.Cap())
//	//t.Logf("free workers number:%d", p.Free())
//
//	t.Logf("running workers number:%d", p.Running())
//	mem := runtime.MemStats{}
//	runtime.ReadMemStats(&mem)
//	t.Logf("memory usage:%d", mem.TotalAlloc/1024)
//}