jdk/src/solaris/classes/sun/awt/X11/Native.java
author yan
Mon, 06 Oct 2008 16:45:00 +0400
changeset 1966 12a51fb0db0d
parent 2 90ce3da70b43
child 5506 202f599c92aa
permissions -rw-r--r--
5100701: Toolkit.getLockingKeyState() does not work on XToolkit, but works on Motif Summary: Does not work on Motif but works on XToolkit now; implemented using XQueryPointer. Reviewed-by: anthony
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/*
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 * Copyright 2003-2005 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Sun designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Sun in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 */
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package sun.awt.X11;
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import sun.misc.Unsafe;
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import java.util.Vector;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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/**
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 * This class contains the collection of utility functions to help work with
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 * native data types on different platforms similarly.
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 */
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class Native {
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    private static Unsafe unsafe = XlibWrapper.unsafe;
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    static int longSize;
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    static int dataModel;
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    static {
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        String dataModelProp = (String)AccessController.
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            doPrivileged(
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                         new PrivilegedAction() {
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                                 public Object run() {
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                                     return System.getProperty("sun.arch.data.model");
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                                 }
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                             });
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        try {
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            dataModel = Integer.parseInt(dataModelProp);
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        } catch (Exception e) {
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            dataModel = 32;
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        }
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        if (dataModel == 32) {
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            longSize = 4;
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        } else {
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            longSize = 8;
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        }
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    }
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    /**
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     * Set of helper function to read data of different PLATFORM types
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     * from memory pointer by <code>ptr</code>
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     * Note, names of types in function are NATIVE PLATFORM types
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     * and they have the same size as they would have in C compiler
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     * on the same platform.
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     */
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    static boolean getBool(long ptr) { return getInt(ptr) != 0; }
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    static boolean getBool(long ptr, int index) { return getInt(ptr, index) != 0; }
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    static void putBool(long ptr, boolean data) { putInt(ptr, (data)?(1):(0)); }
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    static void putBool(long ptr, int index, boolean data) { putInt(ptr, index, (data)?(1):(0)); }
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    /**
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     * Access to C byte data(one byte)
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     */
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    static int getByteSize() { return 1; }
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    static byte getByte(long ptr) { return unsafe.getByte(ptr); }
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    static byte getByte(long ptr, int index) {
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        return getByte(ptr+index);
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    }
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    /**
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     * Stores to C byte data(one byte)
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     */
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    static void putByte(long ptr, byte data) { unsafe.putByte(ptr, data); }
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    static void putByte(long ptr, int index, byte data) {
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        putByte(ptr+index, data);
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    }
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    /**
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     * Converts length bytes of data pointed by <code>data</code> into byte array
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     * Returns null if data is zero
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     * @param data native pointer to native memory
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     * @param length size in bytes of native memory
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     */
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    static byte[] toBytes(long data, int length) {
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        if (data == 0) {
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            return null;
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        }
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        byte[] res = new byte[length];
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        for (int i = 0; i < length; i++, data++) {
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            res[i] = getByte(data);
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        }
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        return res;
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    }
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    /**
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     * Stores byte array into native memory and returns pointer to this memory
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     * Returns 0 if bytes is null
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     */
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    static long toData(byte[] bytes) {
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        if (bytes == null) {
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            return 0;
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        }
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        long res = XlibWrapper.unsafe.allocateMemory(bytes.length);
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        for (int i = 0; i < bytes.length; i++) {
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            putByte(res+i, bytes[i]);
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        }
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        return res;
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    }
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    /**
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     * Access to C unsigned byte data(one byte)
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     */
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    static int getUByteSize() { return 1; }
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    static short getUByte(long ptr) { return (short)(0xFF & unsafe.getByte(ptr));  }
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    static short getUByte(long ptr, int index) {
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        return getUByte(ptr+index);
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    }
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    /**
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     * Stores to C unsigned byte data(one byte)
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     */
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    static void putUByte(long ptr, short data) { unsafe.putByte(ptr, (byte)data); }
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    static void putUByte(long ptr, int index, short data) {
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        putUByte(ptr+index, data);
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    }
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    /**
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     * Converts length usnigned bytes of data pointed by <code>data</code> into
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     * short array
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     * Returns null if data is zero
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     * @param data native pointer to native memory
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     * @param length size in bytes of native memory
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     */
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    static short[] toUBytes(long data, int length) {
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        if (data == 0) {
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            return null;
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        }
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        short[] res = new short[length];
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        for (int i = 0; i < length; i++, data++) {
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            res[i] = getUByte(data);
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        }
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        return res;
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    }
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    /**
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     * Stores short array as unsigned bytes into native memory and returns pointer
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     * to this memory
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     * Returns 0 if bytes is null
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     */
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    static long toUData(short[] bytes) {
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        if (bytes == null) {
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            return 0;
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        }
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        long res = XlibWrapper.unsafe.allocateMemory(bytes.length);
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        for (int i = 0; i < bytes.length; i++) {
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            putUByte(res+i, bytes[i]);
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        }
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        return res;
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    }
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    /**
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     * Access to C short data(two bytes)
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     */
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    static int getShortSize() { return 2; }
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    static short getShort(long ptr) { return unsafe.getShort(ptr); }
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    /**
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     * Stores to C short data(two bytes)
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     */
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    static void putShort(long ptr, short data) { unsafe.putShort(ptr, data); }
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    static void putShort(long ptr, int index, short data) {
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        putShort(ptr + index*getShortSize(), data);
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    }
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    static long toData(short[] shorts) {
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        if (shorts == null) {
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            return 0;
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        }
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        long res = XlibWrapper.unsafe.allocateMemory(shorts.length*getShortSize());
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        for (int i = 0; i < shorts.length; i++) {
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            putShort(res, i, shorts[i]);
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        }
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        return res;
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    }
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    /**
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     * Access to C unsigned short data(two bytes)
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     */
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    static int getUShortSize() { return 2; }
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    static int getUShort(long ptr) { return 0xFFFF & unsafe.getShort(ptr); }
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    /**
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     * Stores to C unsigned short data(two bytes)
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     */
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    static void putUShort(long ptr, int data) { unsafe.putShort(ptr, (short)data); }
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    static void putUShort(long ptr, int index, int data) {
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        putUShort(ptr + index*getShortSize(), data);
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    }
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    /**
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     * Stores int array as unsigned shorts into native memory and returns pointer
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     * to this memory
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     * Returns 0 if bytes is null
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     */
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    static long toUData(int[] shorts) {
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        if (shorts == null) {
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            return 0;
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        }
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        long res = XlibWrapper.unsafe.allocateMemory(shorts.length*getShortSize());
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        for (int i = 0; i < shorts.length; i++) {
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            putUShort(res, i, shorts[i]);
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        }
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        return res;
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    }
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   231
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    /**
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     * Access to C int data(four bytes)
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     */
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    static int getIntSize() { return 4; }
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    static int getInt(long ptr) { return unsafe.getInt(ptr); }
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   237
    static int getInt(long ptr, int index) { return getInt(ptr +getIntSize()*index); }
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    /**
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     * Stores to C int data(four bytes)
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     */
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    static void putInt(long ptr, int data) { unsafe.putInt(ptr, data); }
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   242
    static void putInt(long ptr, int index, int data) {
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        putInt(ptr + index*getIntSize(), data);
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    }
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    static long toData(int[] ints) {
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        if (ints == null) {
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            return 0;
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        }
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        long res = XlibWrapper.unsafe.allocateMemory(ints.length*getIntSize());
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   250
        for (int i = 0; i < ints.length; i++) {
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            putInt(res, i, ints[i]);
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        }
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        return res;
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    }
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   255
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   256
    /**
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     * Access to C unsigned int data(four bytes)
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   258
     */
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   259
    static int getUIntSize() { return 4; }
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   260
    static long getUInt(long ptr) { return 0xFFFFFFFFL & unsafe.getInt(ptr); }
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   261
    static long getUInt(long ptr, int index) { return getUInt(ptr +getIntSize()*index); }
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    /**
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     * Stores to C unsigned int data(four bytes)
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     */
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   265
    static void putUInt(long ptr, long data) { unsafe.putInt(ptr, (int)data); }
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   266
    static void putUInt(long ptr, int index, long data) {
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   267
        putUInt(ptr + index*getIntSize(), data);
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   268
    }
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   269
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   270
    /**
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   271
     * Stores long array as unsigned intss into native memory and returns pointer
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     * to this memory
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     * Returns 0 if bytes is null
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     */
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   275
    static long toUData(long[] ints) {
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   276
        if (ints == null) {
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   277
            return 0;
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   278
        }
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   279
        long res = XlibWrapper.unsafe.allocateMemory(ints.length*getIntSize());
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   280
        for (int i = 0; i < ints.length; i++) {
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   281
            putUInt(res, i, ints[i]);
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   282
        }
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   283
        return res;
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   284
    }
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   285
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parents:
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   286
    /**
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   287
     * Access to C long data(size depends on platform)
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   288
     */
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   289
    static int getLongSize() {
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   290
        return longSize;
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   291
    }
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   292
    static long getLong(long ptr) {
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   293
        if (XlibWrapper.dataModel == 32) {
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   294
            return unsafe.getInt(ptr);
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   295
        } else {
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   296
            return unsafe.getLong(ptr);
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   297
        }
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   298
    }
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   299
    /**
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   300
     * Stores to C long data(four bytes)
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   301
     * Note: <code>data</code> has <code>long</code> type
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   302
     * to be able to keep 64-bit C <code>long</code> data
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   303
     */
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   304
    static void putLong(long ptr, long data) {
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   305
        if (XlibWrapper.dataModel == 32) {
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parents:
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   306
            unsafe.putInt(ptr, (int)data);
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parents:
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   307
        } else {
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parents:
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   308
            unsafe.putLong(ptr, data);
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   309
        }
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   310
    }
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   311
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   312
    static void putLong(long ptr, int index, long data) {
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   313
        putLong(ptr+index*getLongSize(), data);
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   314
    }
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parents:
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   315
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parents:
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   316
    /**
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   317
     * Returns index's element of the array of native long pointed by ptr
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parents:
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   318
     */
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   319
    static long getLong(long ptr, int index) {
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   320
        return getLong(ptr + index*getLongSize());
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parents:
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   321
    }
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parents:
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   322
    /**
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parents:
diff changeset
   323
     * Stores Java long[] array into memory. Memory location is treated as array
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parents:
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   324
     * of native <code>long</code>s
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parents:
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   325
     */
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parents:
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   326
    static void put(long ptr, long[] arr) {
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parents:
diff changeset
   327
        for (int i = 0; i < arr.length; i ++, ptr += getLongSize()) {
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parents:
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   328
            putLong(ptr, arr[i]);
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parents:
diff changeset
   329
        }
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diff changeset
   330
    }
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parents:
diff changeset
   331
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parents:
diff changeset
   332
    /**
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parents:
diff changeset
   333
     * Stores Java Vector of Longs into memory. Memory location is treated as array
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parents:
diff changeset
   334
     * of native <code>long</code>s
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parents:
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   335
     */
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parents:
diff changeset
   336
    static void putLong(long ptr, Vector arr) {
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parents:
diff changeset
   337
        for (int i = 0; i < arr.size(); i ++, ptr += getLongSize()) {
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parents:
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   338
            putLong(ptr, ((Long)arr.elementAt(i)).longValue());
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diff changeset
   339
        }
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   340
    }
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parents:
diff changeset
   341
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parents:
diff changeset
   342
    /**
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parents:
diff changeset
   343
     * Stores Java Vector of Longs into memory. Memory location is treated as array
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parents:
diff changeset
   344
     * of native <code>long</code>s. Array is stored in reverse order
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parents:
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   345
     */
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parents:
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   346
    static void putLongReverse(long ptr, Vector arr) {
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parents:
diff changeset
   347
        for (int i = arr.size()-1; i >= 0; i--, ptr += getLongSize()) {
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parents:
diff changeset
   348
            putLong(ptr, ((Long)arr.elementAt(i)).longValue());
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parents:
diff changeset
   349
        }
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diff changeset
   350
    }
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parents:
diff changeset
   351
    /**
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parents:
diff changeset
   352
     * Converts length bytes of data pointed by <code>data</code> into byte array
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   353
     * Returns null if data is zero
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   354
     * @param data native pointer to native memory
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parents:
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   355
     * @param length size in longs(platform dependent) of native memory
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parents:
diff changeset
   356
     */
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parents:
diff changeset
   357
    static long[] toLongs(long data, int length) {
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parents:
diff changeset
   358
        if (data == 0) {
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parents:
diff changeset
   359
            return null;
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parents:
diff changeset
   360
        }
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parents:
diff changeset
   361
        long[] res = new long[length];
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parents:
diff changeset
   362
        for (int i = 0; i < length; i++, data += getLongSize()) {
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parents:
diff changeset
   363
            res[i] = getLong(data);
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parents:
diff changeset
   364
        }
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parents:
diff changeset
   365
        return res;
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parents:
diff changeset
   366
    }
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parents:
diff changeset
   367
    static long toData(long[] longs) {
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parents:
diff changeset
   368
        if (longs == null) {
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duke
parents:
diff changeset
   369
            return 0;
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parents:
diff changeset
   370
        }
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parents:
diff changeset
   371
        long res = XlibWrapper.unsafe.allocateMemory(longs.length*getLongSize());
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parents:
diff changeset
   372
        for (int i = 0; i < longs.length; i++) {
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parents:
diff changeset
   373
            putLong(res, i, longs[i]);
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parents:
diff changeset
   374
        }
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parents:
diff changeset
   375
        return res;
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parents:
diff changeset
   376
    }
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parents:
diff changeset
   377
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parents:
diff changeset
   378
90ce3da70b43 Initial load
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parents:
diff changeset
   379
    /**
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duke
parents:
diff changeset
   380
     * Access to C "unsigned long" date type, which is XID in X
90ce3da70b43 Initial load
duke
parents:
diff changeset
   381
     */
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duke
parents:
diff changeset
   382
    static long getULong(long ptr) {
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duke
parents:
diff changeset
   383
        if (XlibWrapper.dataModel == 32) {
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duke
parents:
diff changeset
   384
            // Compensate sign-expansion
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duke
parents:
diff changeset
   385
            return ((long)unsafe.getInt(ptr)) & 0xFFFFFFFFL;
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parents:
diff changeset
   386
        } else {
90ce3da70b43 Initial load
duke
parents:
diff changeset
   387
            // Can't do anything!!!
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duke
parents:
diff changeset
   388
            return unsafe.getLong(ptr);
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duke
parents:
diff changeset
   389
        }
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duke
parents:
diff changeset
   390
    }
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duke
parents:
diff changeset
   391
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duke
parents:
diff changeset
   392
    static void putULong(long ptr, long value) {
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duke
parents:
diff changeset
   393
        putLong(ptr, value);
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duke
parents:
diff changeset
   394
    }
90ce3da70b43 Initial load
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parents:
diff changeset
   395
90ce3da70b43 Initial load
duke
parents:
diff changeset
   396
    /**
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duke
parents:
diff changeset
   397
     * Allocates memory for array of native <code>long</code>s of the size <code>length</code>
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duke
parents:
diff changeset
   398
     */
90ce3da70b43 Initial load
duke
parents:
diff changeset
   399
    static long allocateLongArray(int length) {
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duke
parents:
diff changeset
   400
        return unsafe.allocateMemory(getLongSize() * length);
90ce3da70b43 Initial load
duke
parents:
diff changeset
   401
    }
90ce3da70b43 Initial load
duke
parents:
diff changeset
   402
90ce3da70b43 Initial load
duke
parents:
diff changeset
   403
90ce3da70b43 Initial load
duke
parents:
diff changeset
   404
    static long getWindow(long ptr) {
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duke
parents:
diff changeset
   405
        return getLong(ptr);
90ce3da70b43 Initial load
duke
parents:
diff changeset
   406
    }
90ce3da70b43 Initial load
duke
parents:
diff changeset
   407
    static long getWindow(long ptr, int index) {
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duke
parents:
diff changeset
   408
        return getLong(ptr + getWindowSize()*index);
90ce3da70b43 Initial load
duke
parents:
diff changeset
   409
    }
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duke
parents:
diff changeset
   410
90ce3da70b43 Initial load
duke
parents:
diff changeset
   411
    static void putWindow(long ptr, long window) {
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duke
parents:
diff changeset
   412
        putLong(ptr, window);
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duke
parents:
diff changeset
   413
    }
90ce3da70b43 Initial load
duke
parents:
diff changeset
   414
90ce3da70b43 Initial load
duke
parents:
diff changeset
   415
    static void putWindow(long ptr, int index, long window) {
90ce3da70b43 Initial load
duke
parents:
diff changeset
   416
        putLong(ptr, index, window);
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duke
parents:
diff changeset
   417
    }
90ce3da70b43 Initial load
duke
parents:
diff changeset
   418
90ce3da70b43 Initial load
duke
parents:
diff changeset
   419
    /**
90ce3da70b43 Initial load
duke
parents:
diff changeset
   420
     * Set of function to return sizes of C data of the appropriate
90ce3da70b43 Initial load
duke
parents:
diff changeset
   421
     * type.
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duke
parents:
diff changeset
   422
     */
90ce3da70b43 Initial load
duke
parents:
diff changeset
   423
    static int getWindowSize() {
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duke
parents:
diff changeset
   424
        return getLongSize();
90ce3da70b43 Initial load
duke
parents:
diff changeset
   425
    }
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duke
parents:
diff changeset
   426
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duke
parents:
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   427
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    /**
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     * Set of function to access CARD32 type. All data which types are derived
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     * from CARD32 should be accessed using this accessors.
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     * These types are: XID(Window, Drawable, Font, Pixmap, Cursor, Colormap, GContext, KeySym),
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     *                  Atom, Mask, VisualID, Time
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     */
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    static long getCard32(long ptr) {
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        return getLong(ptr);
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    }
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    static void putCard32(long ptr, long value) {
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        putLong(ptr, value);
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    }
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    static long getCard32(long ptr, int index) {
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        return getLong(ptr, index);
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    }
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    static void putCard32(long ptr, int index, long value) {
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        putLong(ptr, index, value);
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    }
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    static int getCard32Size() {
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        return getLongSize();
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    }
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    static long[] card32ToArray(long ptr, int length) {
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        return toLongs(ptr, length);
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    }
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    static long card32ToData(long[] arr) {
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        return toData(arr);
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    }
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}