| /* |
| * Copyright (c) 2005, 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.awt.X11; |
| |
| import java.util.*; |
| |
| /** |
| * Implements abstract X window property caching mechanism. The |
| * caching is performed using storeCache method, the cached data can |
| * be retrieved using getCacheEntry method. |
| * |
| * NOTE: current caching is disabled because of the big variate of |
| * uncovered access to properties/changes of properties. Once the |
| * access to properites is rewritten using general mechanisms, caching |
| * will be enabled. |
| */ |
| public class XPropertyCache { |
| |
| static class PropertyCacheEntry { |
| private final int format; |
| private final int numberOfItems; |
| private final long bytesAfter; |
| private final long data; |
| private final int dataLength; |
| public PropertyCacheEntry(int format, int numberOfItems, long bytesAfter, long data, int dataLength) { |
| this.format = format; |
| this.numberOfItems = numberOfItems; |
| this.bytesAfter = bytesAfter; |
| this.data = XlibWrapper.unsafe.allocateMemory(dataLength); |
| this.dataLength = dataLength; |
| XlibWrapper.memcpy(this.data, data, dataLength); |
| } |
| |
| public int getFormat() { |
| return format; |
| } |
| |
| public int getNumberOfItems() { |
| return numberOfItems; |
| } |
| |
| public long getBytesAfter() { |
| return bytesAfter; |
| } |
| |
| public long getData() { |
| return data; |
| } |
| |
| public int getDataLength() { |
| return dataLength; |
| } |
| } |
| |
| private static Map<Long, Map<XAtom, PropertyCacheEntry>> windowToMap = new HashMap<Long, Map<XAtom, PropertyCacheEntry>>(); |
| |
| public static boolean isCached(long window, XAtom property) { |
| Map<XAtom, PropertyCacheEntry> entryMap = windowToMap.get(window); |
| if (entryMap != null) { |
| return entryMap.containsKey(property); |
| } else { |
| return false; |
| } |
| } |
| |
| public static PropertyCacheEntry getCacheEntry(long window, XAtom property) { |
| Map<XAtom, PropertyCacheEntry> entryMap = windowToMap.get(window); |
| if (entryMap != null) { |
| return entryMap.get(property); |
| } else { |
| return null; |
| } |
| } |
| |
| public static void storeCache(PropertyCacheEntry entry, long window, XAtom property) { |
| Map<XAtom, PropertyCacheEntry> entryMap = windowToMap.get(window); |
| if (entryMap == null) { |
| entryMap = new HashMap<XAtom, PropertyCacheEntry>(); |
| windowToMap.put(window, entryMap); |
| } |
| entryMap.put(property, entry); |
| } |
| |
| public static void clearCache(long window) { |
| windowToMap.remove(window); |
| } |
| |
| public static void clearCache(long window, XAtom property) { |
| Map<XAtom, PropertyCacheEntry> entryMap = windowToMap.get(window); |
| if (entryMap != null) { |
| entryMap.remove(property); |
| } |
| } |
| |
| public static boolean isCachingSupported() { |
| // Currently - unsupported |
| return false; |
| } |
| } |