github.com/bytedance/gopkg@v0.0.0-20240514070511-01b2cbcf35e1/cloud/circuitbreaker/counter_test.go (about)

     1  // Copyright 2021 ByteDance Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package circuitbreaker
    16  
    17  import (
    18  	"sync"
    19  	"testing"
    20  )
    21  
    22  func BenchmarkAtomicCounter_Add(b *testing.B) {
    23  	c := atomicCounter{}
    24  	b.SetParallelism(1000)
    25  	b.RunParallel(func(p *testing.PB) {
    26  		for p.Next() {
    27  			c.Add(1)
    28  		}
    29  	})
    30  }
    31  
    32  func BenchmarkPerPCounter_Add(b *testing.B) {
    33  	c := newPerPCounter()
    34  	b.SetParallelism(1000)
    35  	b.RunParallel(func(p *testing.PB) {
    36  		for p.Next() {
    37  			c.Add(1)
    38  		}
    39  	})
    40  }
    41  
    42  func TestPerPCounter(t *testing.T) {
    43  	numPerG := 1000
    44  	numG := 1000
    45  	c := newPerPCounter()
    46  	c1 := atomicCounter{}
    47  	var wg sync.WaitGroup
    48  	wg.Add(numG)
    49  	for i := 0; i < numG; i++ {
    50  		go func() {
    51  			defer wg.Done()
    52  			for i := 0; i < numPerG; i++ {
    53  				c.Add(1)
    54  				c1.Add(1)
    55  			}
    56  		}()
    57  	}
    58  	wg.Wait()
    59  	total := c.Get()
    60  	total1 := c1.Get()
    61  	if total != c1.Get() {
    62  		t.Errorf("expected %d, get %d", total1, total)
    63  	}
    64  	c.Zero()
    65  	c1.Zero()
    66  	if c.Get() != 0 || c1.Get() != 0 {
    67  		t.Errorf("zero failed")
    68  	}
    69  }