mirror of
https://github.com/yunionio/cloudpods.git
synced 2026-06-24 10:23:43 +08:00
62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
// Copyright 2019 Yunion
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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 lockman
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import (
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"container/list"
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"yunion.io/x/log"
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)
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type FIFO struct {
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fifo *list.List
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}
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func NewFIFO() *FIFO {
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return &FIFO{fifo: list.New()}
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}
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func (f *FIFO) Push(ele interface{}) {
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f.fifo.PushBack(ele)
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}
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func (f *FIFO) Pop(ele interface{}) interface{} {
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e := f.fifo.Front()
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for e != nil && e.Value != ele {
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e = e.Next()
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}
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if e != nil {
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v := f.fifo.Remove(e)
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if v != ele {
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log.Fatalf("remove element not identical!!")
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}
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}
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return nil
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}
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func (f *FIFO) Len() int {
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return f.fifo.Len()
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}
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type ElementInspectFunc func(ele interface{})
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func (f *FIFO) Enum(eif ElementInspectFunc) {
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e := f.fifo.Front()
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for e != nil {
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eif(e.Value)
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e = e.Next()
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}
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}
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