| | | 1 | | using System.Collections.Generic; |
| | | 2 | | using System.Threading; |
| | | 3 | | |
| | | 4 | | namespace Itinero.Network.Search.Islands; |
| | | 5 | | |
| | | 6 | | internal class Islands |
| | | 7 | | { |
| | | 8 | | private readonly HashSet<uint> _tiles; // holds the tiles that have been processed. |
| | 0 | 9 | | private readonly ReaderWriterLockSlim _tilesLock = new(); |
| | | 10 | | private readonly HashSet<EdgeId> _islandEdges; |
| | 0 | 11 | | private readonly ReaderWriterLockSlim _islandEdgesLock = new(); |
| | | 12 | | |
| | 0 | 13 | | internal Islands() |
| | 0 | 14 | | { |
| | 0 | 15 | | _tiles = []; |
| | 0 | 16 | | _islandEdges = []; |
| | 0 | 17 | | } |
| | | 18 | | |
| | 0 | 19 | | private Islands(HashSet<uint> tiles, HashSet<EdgeId> islandEdges) |
| | 0 | 20 | | { |
| | 0 | 21 | | _tiles = tiles; |
| | 0 | 22 | | _islandEdges = islandEdges; |
| | 0 | 23 | | } |
| | | 24 | | |
| | | 25 | | /// <summary> |
| | | 26 | | /// Sets the tile as done. |
| | | 27 | | /// </summary> |
| | | 28 | | /// <param name="tileId">Sets the tile as done.</param> |
| | | 29 | | /// <returns>True if the tile is done.</returns> |
| | | 30 | | public bool SetTileDone(uint tileId) |
| | 0 | 31 | | { |
| | | 32 | | try |
| | 0 | 33 | | { |
| | 0 | 34 | | _tilesLock.EnterWriteLock(); |
| | | 35 | | |
| | 0 | 36 | | return _tiles.Add(tileId); |
| | | 37 | | } |
| | | 38 | | finally |
| | 0 | 39 | | { |
| | 0 | 40 | | _tilesLock.ExitWriteLock(); |
| | 0 | 41 | | } |
| | 0 | 42 | | } |
| | | 43 | | |
| | | 44 | | /// <summary> |
| | | 45 | | /// Returns true if the given tile is done. |
| | | 46 | | /// </summary> |
| | | 47 | | /// <param name="tileId"></param> |
| | | 48 | | /// <returns></returns> |
| | | 49 | | public bool GetTileDone(uint tileId) |
| | 0 | 50 | | { |
| | | 51 | | try |
| | 0 | 52 | | { |
| | 0 | 53 | | _tilesLock.EnterReadLock(); |
| | | 54 | | |
| | 0 | 55 | | return _tiles.Contains(tileId); |
| | | 56 | | } |
| | | 57 | | finally |
| | 0 | 58 | | { |
| | 0 | 59 | | _tilesLock.ExitReadLock(); |
| | 0 | 60 | | } |
| | 0 | 61 | | } |
| | | 62 | | |
| | | 63 | | /// <summary> |
| | | 64 | | /// Returns true if the given edge is on an island. |
| | | 65 | | /// </summary> |
| | | 66 | | /// <param name="edge"></param> |
| | | 67 | | /// <returns></returns> |
| | | 68 | | public bool IsEdgeOnIsland(EdgeId edge) |
| | 0 | 69 | | { |
| | | 70 | | try |
| | 0 | 71 | | { |
| | 0 | 72 | | _islandEdgesLock.EnterReadLock(); |
| | | 73 | | |
| | 0 | 74 | | return _islandEdges.Contains(edge); |
| | | 75 | | } |
| | | 76 | | finally |
| | 0 | 77 | | { |
| | 0 | 78 | | _islandEdgesLock.ExitReadLock(); |
| | 0 | 79 | | } |
| | 0 | 80 | | } |
| | | 81 | | |
| | | 82 | | /// <summary> |
| | | 83 | | /// Marks the given edge as on an island. |
| | | 84 | | /// </summary> |
| | | 85 | | /// <param name="edge"></param> |
| | | 86 | | /// <returns></returns> |
| | | 87 | | public bool SetEdgeOnIsland(EdgeId edge) |
| | 0 | 88 | | { |
| | | 89 | | try |
| | 0 | 90 | | { |
| | 0 | 91 | | _islandEdgesLock.EnterWriteLock(); |
| | | 92 | | |
| | 0 | 93 | | return _islandEdges.Add(edge); |
| | | 94 | | } |
| | | 95 | | finally |
| | 0 | 96 | | { |
| | 0 | 97 | | _islandEdgesLock.ExitWriteLock(); |
| | 0 | 98 | | } |
| | 0 | 99 | | } |
| | | 100 | | |
| | | 101 | | internal Islands Clone() |
| | 0 | 102 | | { |
| | | 103 | | try |
| | 0 | 104 | | { |
| | 0 | 105 | | _tilesLock.EnterWriteLock(); |
| | | 106 | | |
| | | 107 | | |
| | | 108 | | try |
| | 0 | 109 | | { |
| | 0 | 110 | | _islandEdgesLock.EnterWriteLock(); |
| | | 111 | | |
| | 0 | 112 | | return new Islands([.. _tiles], [.. _islandEdges]); |
| | | 113 | | } |
| | | 114 | | finally |
| | 0 | 115 | | { |
| | 0 | 116 | | _islandEdgesLock.ExitWriteLock(); |
| | 0 | 117 | | } |
| | | 118 | | } |
| | | 119 | | finally |
| | 0 | 120 | | { |
| | 0 | 121 | | _tilesLock.ExitWriteLock(); |
| | 0 | 122 | | } |
| | 0 | 123 | | } |
| | | 124 | | } |