53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
// Copyright 2018 The etcd Authors
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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 lease
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// LeaseWithTime contains lease object with expire information.
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type LeaseWithTime struct {
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id LeaseID
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expiration int64
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index int
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}
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type LeaseQueue []*LeaseWithTime
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func (pq LeaseQueue) Len() int { return len(pq) }
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func (pq LeaseQueue) Less(i, j int) bool {
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return pq[i].expiration < pq[j].expiration
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}
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func (pq LeaseQueue) Swap(i, j int) {
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pq[i], pq[j] = pq[j], pq[i]
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pq[i].index = i
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pq[j].index = j
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}
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func (pq *LeaseQueue) Push(x interface{}) {
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n := len(*pq)
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item := x.(*LeaseWithTime)
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item.index = n
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*pq = append(*pq, item)
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}
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func (pq *LeaseQueue) Pop() interface{} {
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old := *pq
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n := len(old)
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item := old[n-1]
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item.index = -1 // for safety
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*pq = old[0 : n-1]
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return item
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}
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