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hotspot/src/share/vm/oops/instanceKlassKlass.hpp

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+/*
+ * Copyright 1997-2006 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.
+ *
+ * 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.
+ *
+ */
+
+// An instanceKlassKlass is the klass of an instanceKlass
+
+class instanceKlassKlass : public klassKlass {
+ public:
+  // Dispatched operation
+  bool oop_is_klass() const           { return true; }
+  bool oop_is_instanceKlass() const   { return true; }
+
+  int oop_size(oop obj) const;
+  int klass_oop_size() const    { return object_size(); }
+
+  // Allocation
+  DEFINE_ALLOCATE_PERMANENT(instanceKlassKlass);
+  static klassOop create_klass(TRAPS);
+  klassOop allocate_instance_klass(int vtable_len,
+                                   int itable_len,
+                                   int static_field_size,
+                                   int nonstatic_oop_map_size,
+                                   ReferenceType rt,
+                                   TRAPS);
+
+  // Casting from klassOop
+  static instanceKlassKlass* cast(klassOop k) {
+    assert(k->klass_part()->oop_is_klass(), "cast to instanceKlassKlass");
+    return (instanceKlassKlass*) k->klass_part();
+  }
+
+  // Sizing
+  static int header_size()    { return oopDesc::header_size() + sizeof(instanceKlassKlass)/HeapWordSize; }
+  int object_size() const     { return align_object_size(header_size()); }
+
+  // Garbage collection
+  void oop_follow_contents(oop obj);
+  int  oop_adjust_pointers(oop obj);
+  bool oop_is_parsable(oop obj) const;
+
+  // Parallel Scavenge and Parallel Old
+  PARALLEL_GC_DECLS
+
+  // Iterators
+  int oop_oop_iterate(oop obj, OopClosure* blk);
+  int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
+
+private:
+  // Apply closure to the InstanceKlass oops that are outside the java heap.
+  inline void iterate_c_heap_oops(instanceKlass* ik, OopClosure* closure);
+
+#ifndef PRODUCT
+ public:
+  // Printing
+  void oop_print_on(oop obj, outputStream* st);
+  void oop_print_value_on(oop obj, outputStream* st);
+#endif
+
+ public:
+  // Verification
+  const char* internal_name() const;
+  void oop_verify_on(oop obj, outputStream* st);
+  // tells whether obj is partially constructed (gc during class loading)
+  bool oop_partially_loaded(oop obj) const;
+  void oop_set_partially_loaded(oop obj);
+};