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cleanup.go
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cleanup.go
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// Copyright 2018-2019 Authors of Cilium
//
// 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 cleanup
import (
"sync"
)
// DeferTerminationCleanupFunction will execute the given function `f` when the
// channel `ch` is closed.
// The given waitGroup will be added with a delta +1 and once the function
// `f` returns from its execution that same waitGroup will signalize function
// `f` is completed.
func DeferTerminationCleanupFunction(wg *sync.WaitGroup, ch <-chan struct{}, f func()) {
wg.Add(1)
go func() {
defer wg.Done()
<-ch
f()
}()
}