1 // Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
8 /** common superclass for all platforms that use GCJ to compile a native binary */
9 public abstract class GCJ extends Platform {
11 // static references to these classes ensure that the linker will include them
12 private static Class c1 = gnu.java.locale.Calendar.class;
13 private static Class c2 = java.util.GregorianCalendar.class;
14 private static Class c3 = gnu.gcj.convert.Input_ASCII.class;
15 private static Class c4 = gnu.gcj.convert.Input_UTF8.class;
16 private static Class c5 = gnu.gcj.convert.Input_8859_1.class;
17 private static Class c6 = gnu.java.locale.LocaleInformation.class;
18 private static Class c7 = gnu.gcj.convert.Output_ASCII.class;
19 private static Class c8 = gnu.java.locale.Calendar_en.class;
20 private static Class c9 = gnu.java.locale.Calendar_en_US.class;
22 protected native InputStream _getBuiltinInputStream();
24 protected native void _decodeJPEG(InputStream is, Picture p);
26 // FEATURE: This could be optimized (a lot) by using a custom hashtable
27 public final static class Retainer {
28 private static Hash table = new Hash();
29 private final static class Key {
31 public Key(Object o) { this.o = o; }
32 public int hashCode() { return o == null ? 0 : o.hashCode(); }
33 public boolean equals(Object o2) { return (o2 instanceof Key) && ((Key)o2).o == o; }
35 private final static class Entry {
37 public Entry() { inc(); }
38 public void inc() { refCount++; }
39 public boolean dec() { return --refCount == 0; }
41 public static synchronized void retain(Object o) {
43 Entry r = (Entry) table.get(k);
44 if(r == null) table.put(k,new Entry());
47 public static synchronized void release(Object o) {
49 Entry e = (Entry) table.get(k);
50 if(e == null) throw new Error("Retainer::Release on unknown object");
51 if(e.dec()) { table.remove(k); }