2003/09/21 10:26:54

[org.ibex.core.git] / src / org / xwt / plat / GCJ.java

diff --git a/src/org/xwt/plat/GCJ.java b/src/org/xwt/plat/GCJ.java
index 38d9ec9..0e638a2 100644 (file)
--- a/src/org/xwt/plat/GCJ.java
+++ b/src/org/xwt/plat/GCJ.java
@@ -1,4 +1,4 @@
-// Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
+// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
 package org.xwt.plat;
 
 import org.xwt.*;
@@ -16,38 +16,62 @@ public abstract class GCJ extends Platform {
     private static Class c5 = gnu.gcj.convert.Input_8859_1.class;
     private static Class c6 = gnu.java.locale.LocaleInformation.class;
     private static Class c7 = gnu.gcj.convert.Output_ASCII.class;
+    private static Class c8 = gnu.java.locale.Calendar_en.class;
+    private static Class c9 = gnu.java.locale.Calendar_en_US.class;
 
-    protected org.xwt.Weak _getWeak(Object o) { return new Java2Weak(o); }
-    protected native InputStream _getBuiltinInputStream(); 
+    protected native InputStream _getBuiltinInputStream();
 
-    private static class Java2Weak extends java.lang.ref.WeakReference implements org.xwt.Weak {
-        public Java2Weak(Object o) { super(o); }
-    }
-        
     // FIXME
     protected ImageDecoder _decodeJPEG(InputStream is, String name) {
-       try {
-           return new JPEG(is);
-       } catch (Exception e) {
-           Log.log(this, "Exception while decoding JPEG image " + name);
-           Log.log(this, e);
-           return null;
-       }
+        try {
+            return new JPEG(is);
+        } catch (Exception e) {
+            Log.log(this, "Exception while decoding JPEG image " + name);
+            Log.log(this, e);
+            return null;
+        }
     }
 
     /** Converts an InputStream carrying a JPEG image into an ARGB int[] */
-    private static class JPEG implements ImageDecoder {
-       int[] data;
-       byte[] buffer;
-       int width, height;
-       InputStream is;
-       
-       public final int[] getData() { return data; }
-       public final int getWidth() { return width; }
-       public final int getHeight() { return height; }
-       private JPEG(InputStream is) { this.is = is; nativeDecompress(); buffer = null; }
-       private native void nativeDecompress();
+    private static class JPEG extends ImageDecoder {
+        int[] data;
+        byte[] buffer;
+        int width, height;
+        InputStream is;
+        
+        public final int[] getData() { return data; }
+        public final int getWidth() { return width; }
+        public final int getHeight() { return height; }
+        private JPEG(InputStream is) { this.is = is; nativeDecompress(); buffer = null; }
+        private native void nativeDecompress();
+    }
+    
+    // FIXME: This could be optimized (a lot) by using a custom hashtable
+    public final static class Retainer {
+        private static Hash table = new Hash();
+        private final static class Key {
+            private Object o;
+            public Key(Object o) { this.o = o; }
+            public int hashCode() { return o == null ? 0 : o.hashCode(); }
+            public boolean equals(Object o2) { return (o2 instanceof Key) && ((Key)o2).o == o; }
+        }
+        private final static class Entry {
+            private int refCount;
+            public Entry() { inc(); }
+            public void inc() { refCount++; }
+            public boolean dec() { return --refCount == 0; }
+        }
+        public static synchronized void retain(Object o) {
+            Key k = new Key(o);
+            Entry r = (Entry) table.get(k);
+            if(r == null) table.put(k,new Entry());
+            else r.inc();
+        }
+        public static synchronized void release(Object o) {
+            Key k = new Key(o);
+            Entry e = (Entry) table.get(k);
+            if(e == null) throw new Error("Retainer::Release on unknown object");
+            if(e.dec()) { table.remove(k); }
+        }
     }
-
 }
-