libjava/java/lang/Object.h

   1 // Object.h - Header file for java.lang.Object.  -*- c++ -*-
   2
   3 /* Copyright (C) 1998, 1999, 2000, 2001, 2004, 2005  Free Software Foundation
   4
   5    This file is part of libgcj.
   6
   7 This software is copyrighted work licensed under the terms of the
   8 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   9 details.  */
  10
  11 #ifndef __JAVA_LANG_OBJECT_H__
  12 #define __JAVA_LANG_OBJECT_H__
  13
  14 #pragma interface
  15
  16 #include <gcj/javaprims.h>
  17
  18 extern "Java"
  19 {
  20 // This class is mainly here as a kludge to get G++ to allocate two
  21 // extra entries in each vtable.
  22 struct _JvObjectPrefix
  23 {
  24 protected:
  25   // New ABI Compatibility Dummy, #1 and 2.
  26   virtual void nacd_1 (void) {}; // This slot really contains the Class pointer.
  27   // For IA64, the GC descriptor goes into the second word of the nacd1 descr.
  28 # ifndef __ia64__
  29     virtual void nacd_2 (void) {}; // Actually the GC bitmap marking descriptor.
  30 # endif
  31 };
  32 }
  33
  34 // Forward declarations for friends of java::lang::Object
  35 void _Jv_MonitorEnter (jobject obj);
  36 void _Jv_MonitorExit (jobject obj);
  37 void _Jv_InitializeSyncMutex (void);
  38 void _Jv_FinalizeObject (jobject obj);
  39 bool _Jv_ObjectCheckMonitor (jobject obj);
  40
  41 class java::lang::Object : public _JvObjectPrefix
  42 {
  43 protected:
  44   virtual void finalize (void);
  45 public:
  46   // Order must match order in Object.java.
  47   jclass getClass (void);
  48   virtual jint hashCode (void);
  49   void notify (void);
  50   void notifyAll (void);
  51   void wait (jlong timeout, jint nanos);
  52   virtual jboolean equals (jobject obj);
  53   Object (void);
  54   virtual jstring toString (void);
  55   void wait (void);
  56   void wait (jlong timeout);
  57
  58   friend void ::_Jv_MonitorEnter (jobject obj);
  59   friend void ::_Jv_MonitorExit (jobject obj);
  60   friend void ::_Jv_InitializeSyncMutex (void);
  61   friend void ::_Jv_FinalizeObject (jobject obj);
  62   friend bool ::_Jv_ObjectCheckMonitor (jobject obj);
  63
  64 #ifdef JV_MARKOBJ_DECL
  65   friend JV_MARKOBJ_DECL;
  66 #endif
  67 #ifdef JV_MARKARRAY_DECL
  68   friend JV_MARKARRAY_DECL;
  69 #endif
  70
  71   static java::lang::Class class$;
  72
  73 protected:
  74   virtual jobject clone (void);
  75
  76 private:
  77   // This does not actually refer to a Java object.  Instead it is a
  78   // placeholder for a piece of internal data (the synchronization
  79   // information).
  80 # ifndef JV_HASH_SYNCHRONIZATION
  81     jobject sync_info;
  82 # endif
  83
  84     // Initialize the sync_info field.  Not called with JV_HASH_SYNCHRONIZATION.
  85     void sync_init (void);
  86 };
  87
  88 #endif /* __JAVA_LANG_OBJECT_H__ */