github.com/siglens/siglens@v0.0.0-20240328180423-f7ce9ae441ed/pkg/blob/local/localheap.go (about)

     1  /*
     2  Copyright 2023.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package local
    18  
    19  import (
    20  	"sync"
    21  
    22  	"github.com/siglens/siglens/pkg/segment/structs"
    23  )
    24  
    25  type SortedMTimeSegSetFiles []*structs.SegSetData
    26  
    27  var allSegSetFilesLock sync.RWMutex
    28  var allSortedSegSetFiles SortedMTimeSegSetFiles
    29  
    30  func (s SortedMTimeSegSetFiles) Len() int {
    31  	allSegSetFilesLock.RLock()
    32  	defer allSegSetFilesLock.RUnlock()
    33  	return len(s)
    34  }
    35  
    36  func (s SortedMTimeSegSetFiles) Less(i, j int) bool {
    37  	allSegSetFilesLock.RLock()
    38  	defer allSegSetFilesLock.RUnlock()
    39  	return s[i].AccessTime < s[j].AccessTime
    40  }
    41  
    42  func (s SortedMTimeSegSetFiles) Swap(i, j int) {
    43  	allSegSetFilesLock.RLock()
    44  	defer allSegSetFilesLock.RUnlock()
    45  	s[i], s[j] = s[j], s[i]
    46  }
    47  
    48  func (s *SortedMTimeSegSetFiles) Push(x interface{}) {
    49  	allSegSetFilesLock.Lock()
    50  	defer allSegSetFilesLock.Unlock()
    51  	*s = append(*s, x.(*structs.SegSetData))
    52  }
    53  
    54  func (s *SortedMTimeSegSetFiles) Pop() interface{} {
    55  	allSegSetFilesLock.Lock()
    56  	defer allSegSetFilesLock.Unlock()
    57  	old := *s
    58  	n := len(old)
    59  	item := old[n-1]
    60  	old[n-1] = nil // avoid memory leak
    61  	*s = old[0 : n-1]
    62  	return item
    63  }