kubernetes resizeevents_windows 源码
kubernetes resizeevents_windows 代码
文件路径：/staging/src/k8s.io/kubectl/pkg/util/term/resizeevents_windows.go
/*
Copyright 2016 The Kubernetes 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 term
import (
"time"
"k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/client-go/tools/remotecommand"
)
// monitorResizeEvents spawns a goroutine that periodically gets the terminal size and tries to send
// it to the resizeEvents channel if the size has changed. The goroutine stops when the stop channel
// is closed.
func monitorResizeEvents(fd uintptr, resizeEvents chan<- remotecommand.TerminalSize, stop chan struct{}) {
go func() {
defer runtime.HandleCrash()
size := GetSize(fd)
if size == nil {
return
}
lastSize := *size
for {
// see if we need to stop running
select {
case <-stop:
return
default:
}
size := GetSize(fd)
if size == nil {
return
}
if size.Height != lastSize.Height || size.Width != lastSize.Width {
lastSize.Height = size.Height
lastSize.Width = size.Width
resizeEvents <- *size
}
// sleep to avoid hot looping
time.Sleep(250 * time.Millisecond)
}
}()
}
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