/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cache
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import (
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"sync"
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"testing"
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"time"
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"k8s.io/apimachinery/pkg/util/wait"
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)
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const (
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concurrencyLevel = 5
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)
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func BenchmarkListener(b *testing.B) {
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var notification addNotification
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var swg sync.WaitGroup
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swg.Add(b.N)
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b.SetParallelism(concurrencyLevel)
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// Preallocate enough space so that benchmark does not run out of it
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pl := newProcessListener(&ResourceEventHandlerFuncs{
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AddFunc: func(obj interface{}) {
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swg.Done()
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},
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}, 0, 0, time.Now(), 1024*1024)
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var wg wait.Group
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defer wg.Wait() // Wait for .run and .pop to stop
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defer close(pl.addCh) // Tell .run and .pop to stop
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wg.Start(pl.run)
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wg.Start(pl.pop)
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b.ReportAllocs()
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b.ResetTimer()
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b.RunParallel(func(pb *testing.PB) {
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for pb.Next() {
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pl.add(notification)
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}
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})
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swg.Wait() // Block until all notifications have been received
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b.StopTimer()
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}
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