package lock_test

import (
	"sync"
	"testing"
)

func BenchmarkSyncMutex(t *testing.B) {
	// 100000000 loop
	// goos: darwin
	// goarch: amd64
	// pkg: git.wecise.com/wecise/mring/z/lock
	// cpu: Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
	// BenchmarkSyncMutex
	// BenchmarkSyncMutex-8   	       1	33905064348 ns/op	2407287568 B/op	100034140 allocs/op
	// PASS
	// ok  	git.wecise.com/wecise/mring/z/lock	34.056s
	//
	// 10000000 loop
	// goos: darwin
	// goarch: amd64
	// pkg: git.wecise.com/wecise/mring/z/lock
	// cpu: Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
	// BenchmarkSyncMutex
	// BenchmarkSyncMutex-8   	       1	3215950432 ns/op	243519072 B/op	10016404 allocs/op
	// PASS
	// ok  	git.wecise.com/wecise/mring/z/lock	3.980s
	//
	// 1000000 loop
	// goos: darwin
	// goarch: amd64
	// pkg: git.wecise.com/wecise/mring/z/lock
	// cpu: Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
	// BenchmarkSyncMutex
	// BenchmarkSyncMutex-8   	1000000000	         0.3031 ns/op	       0 B/op	       0 allocs/op
	// PASS
	// ok  	git.wecise.com/wecise/mring/z/lock	5.979s

	var mutex sync.Mutex
	t.StartTimer()
	for i := 0; i < 10000000; {
		go func() {
			mutex.Lock()
			i++
			mutex.Unlock()
		}()
	}
	t.StopTimer()
}

func BenchmarkChan(t *testing.B) {
	// 100000000 loop Crash
	//
	// 10000000 loop
	// goos: darwin
	// goarch: amd64
	// pkg: git.wecise.com/wecise/mring/z/lock
	// cpu: Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
	// BenchmarkChan
	// BenchmarkChan-8   	       1	49887892128 ns/op	5246415680 B/op	35689879 allocs/op
	// PASS
	// ok  	git.wecise.com/wecise/mring/z/lock	52.270s
	//
	// 1000000 loop
	// goos: darwin
	// goarch: amd64
	// pkg: git.wecise.com/wecise/mring/z/lock
	// cpu: Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
	// BenchmarkChan
	// BenchmarkChan-8   	       1	1749597455 ns/op	313448576 B/op	 2504514 allocs/op
	// PASS
	// ok  	git.wecise.com/wecise/mring/z/lock	2.472s

	ch := make(chan struct{}, 1)
	t.StartTimer()
	for i := 0; i < 10000000; {
		go func() {
			ch <- struct{}{}
			i++
			<-ch
		}()
	}
	t.StopTimer()
}