src/java.desktop/unix/classes/sun/java2d/jules/IdleTileCache.java
branchhttp-client-branch
changeset 55844 dbcbcda0e413
parent 55842 cb8fcde5b5c8
parent 47873 7944849362f3
child 55845 a88515bdd90a
--- a/src/java.desktop/unix/classes/sun/java2d/jules/IdleTileCache.java	Tue Nov 21 12:27:45 2017 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,109 +0,0 @@
-/*
- * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.  Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.java2d.jules;
-
-import java.util.*;
-
-public class IdleTileCache {
-    static final int IDLE_TILE_SYNC_GRANULARITY = 16;
-    static final ArrayList<JulesTile> idleBuffers = new ArrayList<JulesTile>();
-
-    ArrayList<JulesTile> idleTileWorkerCacheList = new ArrayList<JulesTile>();
-    ArrayList<JulesTile> idleTileConsumerCacheList =
-              new ArrayList<JulesTile>(IDLE_TILE_SYNC_GRANULARITY);
-
-    /**
-     * Return a cached Tile, if possible from cache.
-     * Allowed caller: Rasterizer/Producer-Thread
-     *
-     * @param: maxCache - Specify the maximum amount of tiles needed
-     */
-    public JulesTile getIdleTileWorker(int maxCache) {
-        /* Try to fetch idle tiles from the global cache list */
-        if (idleTileWorkerCacheList.size() == 0) {
-            idleTileWorkerCacheList.ensureCapacity(maxCache);
-
-            synchronized (idleBuffers) {
-                for (int i = 0; i < maxCache && idleBuffers.size() > 0; i++) {
-                    idleTileWorkerCacheList.add(
-                            idleBuffers.remove(idleBuffers.size() - 1));
-                }
-            }
-        }
-
-        if (idleTileWorkerCacheList.size() > 0) {
-            return idleTileWorkerCacheList.remove(idleTileWorkerCacheList.size() - 1);
-        }
-
-        return new JulesTile();
-    }
-
-    /**
-     * Release tile and allow it to be re-used by another thread. Allowed
-     *  Allowed caller: MaskBlit/Consumer-Thread
-     */
-    public void releaseTile(JulesTile tile) {
-        if (tile != null && tile.hasBuffer()) {
-            idleTileConsumerCacheList.add(tile);
-
-            if (idleTileConsumerCacheList.size() > IDLE_TILE_SYNC_GRANULARITY) {
-                synchronized (idleBuffers) {
-                    idleBuffers.addAll(idleTileConsumerCacheList);
-                }
-                idleTileConsumerCacheList.clear();
-            }
-        }
-    }
-
-    /**
-     * Releases thread-local tiles cached for use by the rasterizing thread.
-     * Allowed caller: Rasterizer/Producer-Thread
-     */
-    public void disposeRasterizerResources() {
-        releaseTiles(idleTileWorkerCacheList);
-    }
-
-    /**
-     * Releases thread-local tiles cached for performance reasons. Allowed
-     * Allowed caller: MaskBlit/Consumer-Thread
-     */
-    public void disposeConsumerResources() {
-        releaseTiles(idleTileConsumerCacheList);
-    }
-
-    /**
-     * Release a list of tiles and allow it to be re-used by another thread.
-     * Thread safe.
-     */
-    public void releaseTiles(List<JulesTile> tileList) {
-        if (tileList.size() > 0) {
-            synchronized (idleBuffers) {
-                idleBuffers.addAll(tileList);
-            }
-            tileList.clear();
-        }
-    }
-}