1 /* |
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2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package sun.java2d.jules; |
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27 |
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28 import java.util.*; |
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29 |
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30 public class TileWorker implements Runnable { |
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31 static final int RASTERIZED_TILE_SYNC_GRANULARITY = 8; |
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32 final ArrayList<JulesTile> rasterizedTileConsumerCache = |
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33 new ArrayList<JulesTile>(); |
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34 final LinkedList<JulesTile> rasterizedBuffers = new LinkedList<JulesTile>(); |
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35 |
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36 IdleTileCache tileCache; |
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37 JulesAATileGenerator tileGenerator; |
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38 int workerStartIndex; |
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39 volatile int consumerPos = 0; |
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40 |
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41 /* Threading statistics */ |
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42 int mainThreadCnt = 0; |
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43 int workerCnt = 0; |
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44 int doubled = 0; |
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45 |
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46 public TileWorker(JulesAATileGenerator tileGenerator, int workerStartIndex, IdleTileCache tileCache) { |
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47 this.tileGenerator = tileGenerator; |
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48 this.workerStartIndex = workerStartIndex; |
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49 this.tileCache = tileCache; |
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50 } |
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51 |
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52 public void run() { |
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53 ArrayList<JulesTile> tiles = new ArrayList<JulesTile>(16); |
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54 |
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55 for (int i = workerStartIndex; i < tileGenerator.getTileCount(); i++) { |
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56 TileTrapContainer tile = tileGenerator.getTrapContainer(i); |
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57 |
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58 if (tile != null && tile.getTileAlpha() == 127) { |
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59 JulesTile rasterizedTile = |
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60 tileGenerator.rasterizeTile(i, |
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61 tileCache.getIdleTileWorker( |
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62 tileGenerator.getTileCount() - i - 1)); |
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63 tiles.add(rasterizedTile); |
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64 |
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65 if (tiles.size() > RASTERIZED_TILE_SYNC_GRANULARITY) { |
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66 addRasterizedTiles(tiles); |
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67 tiles.clear(); |
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68 } |
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69 } |
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70 |
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71 i = Math.max(i, consumerPos + RASTERIZED_TILE_SYNC_GRANULARITY / 2); |
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72 } |
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73 addRasterizedTiles(tiles); |
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74 |
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75 tileCache.disposeRasterizerResources(); |
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76 } |
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77 |
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78 /** |
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79 * Returns a rasterized tile for the specified tilePos, |
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80 * or null if it isn't available. |
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81 * Allowed caller: MaskBlit/Consumer-Thread |
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82 */ |
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83 public JulesTile getPreRasterizedTile(int tilePos) { |
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84 JulesTile tile = null; |
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85 |
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86 if (rasterizedTileConsumerCache.size() == 0 && |
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87 tilePos >= workerStartIndex) |
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88 { |
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89 synchronized (rasterizedBuffers) { |
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90 rasterizedTileConsumerCache.addAll(rasterizedBuffers); |
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91 rasterizedBuffers.clear(); |
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92 } |
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93 } |
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94 |
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95 while (tile == null && rasterizedTileConsumerCache.size() > 0) { |
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96 JulesTile t = rasterizedTileConsumerCache.get(0); |
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97 |
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98 if (t.getTilePos() > tilePos) { |
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99 break; |
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100 } |
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101 |
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102 if (t.getTilePos() < tilePos) { |
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103 tileCache.releaseTile(t); |
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104 doubled++; |
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105 } |
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106 |
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107 if (t.getTilePos() <= tilePos) { |
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108 rasterizedTileConsumerCache.remove(0); |
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109 } |
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110 |
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111 if (t.getTilePos() == tilePos) { |
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112 tile = t; |
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113 } |
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114 } |
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115 |
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116 if (tile == null) { |
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117 mainThreadCnt++; |
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118 |
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119 // If there are no tiles left, tell the producer the current |
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120 // position. This avoids producing tiles twice. |
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121 consumerPos = tilePos; |
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122 } else { |
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123 workerCnt++; |
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124 } |
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125 |
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126 return tile; |
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127 } |
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128 |
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129 private void addRasterizedTiles(ArrayList<JulesTile> tiles) { |
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130 synchronized (rasterizedBuffers) { |
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131 rasterizedBuffers.addAll(tiles); |
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132 } |
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133 } |
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134 |
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135 /** |
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136 * Releases cached tiles. |
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137 * Allowed caller: MaskBlit/Consumer-Thread |
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138 */ |
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139 public void disposeConsumerResources() { |
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140 synchronized (rasterizedBuffers) { |
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141 tileCache.releaseTiles(rasterizedBuffers); |
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142 } |
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143 |
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144 tileCache.releaseTiles(rasterizedTileConsumerCache); |
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145 } |
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146 } |
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