NativeLibLoader.java :  » 6.0-JDK-Modules-sun » awt » sun » awt » Java Open Source

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awt » sun » awt » NativeLibLoader.java
/*
 * Copyright 1998 Sun Microsystems, Inc.  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.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package sun.awt;

class NativeLibLoader {

    /**
     * This is copied from java.awt.Toolkit since we need the library
     * loaded in sun.awt.image also:
     *
     * WARNING: This is a temporary workaround for a problem in the
     * way the AWT loads native libraries. A number of classes in this
     * package (sun.awt.image) have a native method, initIDs(),
     * which initializes
     * the JNI field and method ids used in the native portion of
     * their implementation.
     *
     * Since the use and storage of these ids is done by the
     * implementation libraries, the implementation of these method is
     * provided by the particular AWT implementations
     * (i.e. "Toolkit"s/Peer), such as Motif, Win32 or Tiny. The
     * problem is that this means that the native libraries must be
     * loaded by the java.* classes, which do not necessarily know the
     * names of the libraries to load. A better way of doing this
     * would be to provide a separate library which defines java.awt.*
     * initIDs, and exports the relevant symbols out to the
     * implementation libraries.
     * 
     * For now, we know it's done by the implementation, and we assume
     * that the name of the library is "awt".  -br.
     */
    static void loadLibraries() {
  java.security.AccessController.doPrivileged(
      new sun.security.action.LoadLibraryAction("awt"));
    }
}
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