mirror of
https://github.com/labring/sealos.git
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52 lines
1.0 KiB
Go
52 lines
1.0 KiB
Go
// Copyright © 2021 sealos.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sync
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import "sync"
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type Pool struct {
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queue chan int
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wg *sync.WaitGroup
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}
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func NewPool(size int) *Pool {
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if size <= 1 {
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size = 1
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}
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return &Pool{
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queue: make(chan int, size),
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wg: &sync.WaitGroup{},
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}
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}
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func (p *Pool) Add(delta int) {
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for i := 0; i < delta; i++ {
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p.queue <- 1
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}
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for i := 0; i > delta; i-- {
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<-p.queue
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}
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p.wg.Add(delta)
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}
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func (p *Pool) Done() {
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<-p.queue
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p.wg.Done()
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}
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func (p *Pool) Wait() {
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p.wg.Wait()
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}
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