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poll_test.go
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poll_test.go
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// Copyright 2021 CloudWeGo Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package netpoll
import (
"sync"
"sync/atomic"
"syscall"
"testing"
"time"
)
// Trigger has been validated, but no usage for now.
func TestPollTrigger(t *testing.T) {
t.Skip()
var trigger int
var stop = make(chan error)
var p = openDefaultPoll()
go func() {
stop <- p.Wait()
}()
time.Sleep(time.Millisecond)
Equal(t, trigger, 0)
p.Trigger()
time.Sleep(time.Millisecond)
Equal(t, trigger, 1)
p.Trigger()
time.Sleep(time.Millisecond)
Equal(t, trigger, 2)
p.Close()
err := <-stop
MustNil(t, err)
}
func TestPollMod(t *testing.T) {
var rn, wn, hn int32
var read = func(p Poll) error {
atomic.AddInt32(&rn, 1)
return nil
}
var write = func(p Poll) error {
atomic.AddInt32(&wn, 1)
return nil
}
var hup = func(p Poll) error {
atomic.AddInt32(&hn, 1)
return nil
}
var stop = make(chan error)
var p = openDefaultPoll()
go func() {
stop <- p.Wait()
}()
var rfd, wfd = GetSysFdPairs()
var rop = &FDOperator{FD: rfd, OnRead: read, OnWrite: write, OnHup: hup}
var wop = &FDOperator{FD: wfd, OnRead: read, OnWrite: write, OnHup: hup}
var err error
var r, w, h int32
r, w, h = atomic.LoadInt32(&rn), atomic.LoadInt32(&wn), atomic.LoadInt32(&hn)
Assert(t, r == 0 && w == 0 && h == 0, r, w, h)
err = p.Control(rop, PollReadable)
MustNil(t, err)
r, w, h = atomic.LoadInt32(&rn), atomic.LoadInt32(&wn), atomic.LoadInt32(&hn)
Assert(t, r == 0 && w == 0 && h == 0, r, w, h)
err = p.Control(wop, PollWritable) // trigger one shot
MustNil(t, err)
time.Sleep(50 * time.Millisecond)
r, w, h = atomic.LoadInt32(&rn), atomic.LoadInt32(&wn), atomic.LoadInt32(&hn)
Assert(t, r == 0 && w == 1 && h == 0, r, w, h)
err = p.Control(rop, PollR2RW) // trigger write
MustNil(t, err)
time.Sleep(time.Millisecond)
r, w, h = atomic.LoadInt32(&rn), atomic.LoadInt32(&wn), atomic.LoadInt32(&hn)
Assert(t, r == 0 && w >= 2 && h == 0, r, w, h)
// close wfd, then trigger hup rfd
err = syscall.Close(wfd) // trigger hup
MustNil(t, err)
time.Sleep(time.Millisecond)
r, w, h = atomic.LoadInt32(&rn), atomic.LoadInt32(&wn), atomic.LoadInt32(&hn)
Assert(t, r == 0 && w >= 2 && h >= 1, r, w, h)
p.Close()
err = <-stop
MustNil(t, err)
}
func TestPollClose(t *testing.T) {
var p = openDefaultPoll()
var wg sync.WaitGroup
wg.Add(1)
go func() {
p.Wait()
wg.Done()
}()
p.Close()
wg.Wait()
}
func BenchmarkPollMod(b *testing.B) {
b.StopTimer()
var p = openDefaultPoll()
r, _ := GetSysFdPairs()
var operator = &FDOperator{FD: r}
p.Control(operator, PollReadable)
// benchmark
b.ReportAllocs()
b.StartTimer()
for i := 0; i < b.N; i++ {
p.Control(operator, PollR2RW)
}
}