1 /*
   2  * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package com.apple.jobjc;
  26 
  27 
  28 
  29 public class MacOSXFramework {
  30     private static native long retainFramework(final String frameworkName);
  31     private static native void releaseFramework(final long frameworkPtr);
  32     private static native void getConstant(final long frameworkPtr, String symbol, final long bufferPtr, final int size);
  33 
  34     private final JObjCRuntime runtime;
  35     protected final long[] nativeLibPtrs;
  36 
  37     final long getFrameworkPtr() { return nativeLibPtrs.length > 0 ? nativeLibPtrs[0] : 0; }
  38 
  39     private static long[] createFrameworkPtrsFromPaths(final String[] frameworkLibPaths) {
  40         final long[] libPtrs = new long[frameworkLibPaths.length];
  41         for(int i = 0; i < libPtrs.length; i++){
  42             libPtrs[i] = retainFramework(frameworkLibPaths[i]);
  43             if(libPtrs[i] == 0) throw new RuntimeException("Could not open library at " + frameworkLibPaths[i]);
  44         }
  45         return libPtrs;
  46     }
  47 
  48     protected MacOSXFramework(final JObjCRuntime runtime, final String[] nativeLibPaths) {
  49         runtime.assertOK();
  50         this.runtime = runtime;
  51         this.nativeLibPtrs = createFrameworkPtrsFromPaths(nativeLibPaths);
  52     }
  53 
  54     @Override protected final synchronized void finalize() throws Throwable {
  55         for(long lib : nativeLibPtrs)
  56             if(lib != 0) releaseFramework(lib);
  57     }
  58 
  59     protected final JObjCRuntime getRuntime(){ return runtime; }
  60 
  61     protected void getConstant(final String symbol, final long retValPtr, final int size){
  62         assert size >= 0;
  63         assert retValPtr != 0;
  64         getConstant(getFrameworkPtr(), symbol, retValPtr, size);
  65     }
  66 
  67     protected void getConstant(final String symbol, final NativeArgumentBuffer out, final int size){
  68         getConstant(symbol, out.retValPtr, size);
  69     }
  70 
  71     protected void getConstant(final String symbol, final Struct out, final int size){
  72         getConstant(symbol, out.raw.bufferPtr, size);
  73     }
  74 }