route/vendor/go.uber.org/atomic/stress_test.go

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2017-10-06 15:29:20 +00:00
// Copyright (c) 2016 Uber Technologies, Inc.
//
// 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 atomic
import (
"runtime"
"sync"
"testing"
)
const (
_parallelism = 4
_iterations = 1000
)
func runStress(f func()) {
defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(_parallelism))
var wg sync.WaitGroup
wg.Add(_parallelism)
for i := 0; i < _parallelism; i++ {
go func() {
defer wg.Done()
for j := 0; j < _iterations; j++ {
f()
}
}()
}
wg.Wait()
}
func TestStressInt32(t *testing.T) {
var atom Int32
runStress(func() {
atom.Load()
atom.Add(1)
atom.Sub(2)
atom.Inc()
atom.Dec()
atom.CAS(1, 0)
atom.Swap(5)
atom.Store(1)
})
}
func TestStressInt64(t *testing.T) {
var atom Int64
runStress(func() {
atom.Load()
atom.Add(1)
atom.Sub(2)
atom.Inc()
atom.Dec()
atom.CAS(1, 0)
atom.Swap(5)
atom.Store(1)
})
}
func TestStressUint32(t *testing.T) {
var atom Uint32
runStress(func() {
atom.Load()
atom.Add(1)
atom.Sub(2)
atom.Inc()
atom.Dec()
atom.CAS(1, 0)
atom.Swap(5)
atom.Store(1)
})
}
func TestStressUint64(t *testing.T) {
var atom Uint64
runStress(func() {
atom.Load()
atom.Add(1)
atom.Sub(2)
atom.Inc()
atom.Dec()
atom.CAS(1, 0)
atom.Swap(5)
atom.Store(1)
})
}
func TestStressFloat64(t *testing.T) {
var atom Float64
runStress(func() {
atom.Load()
atom.CAS(1.0, 0.1)
atom.Add(1.1)
atom.Sub(0.2)
atom.Store(1.0)
})
}
func TestStressBool(t *testing.T) {
var atom Bool
runStress(func() {
atom.Load()
atom.Store(false)
atom.Swap(true)
atom.Load()
atom.Toggle()
atom.Toggle()
})
}
func TestStressString(t *testing.T) {
var atom String
runStress(func() {
atom.Load()
atom.Store("abc")
atom.Load()
atom.Store("def")
})
}