diff src/share/vm/oops/typeArrayKlass.hpp @ 0:a61af66fc99e jdk7-b24

Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children 7d7a7c599c17
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/oops/typeArrayKlass.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,103 @@
+/*
+ * Copyright 1997-2007 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.
+ *
+ */
+
+// A typeArrayKlass is the klass of a typeArray
+// It contains the type and size of the elements
+
+class typeArrayKlass : public arrayKlass {
+  friend class VMStructs;
+ private:
+  jint _max_length;            // maximum number of elements allowed in an array
+ public:
+  // instance variables
+  jint max_length()                     { return _max_length; }
+  void set_max_length(jint m)           { _max_length = m;    }
+
+  // testers
+  bool oop_is_typeArray_slow() const    { return true; }
+
+  // klass allocation
+  DEFINE_ALLOCATE_PERMANENT(typeArrayKlass);
+  static klassOop create_klass(BasicType type, int scale, TRAPS);
+
+  int oop_size(oop obj) const;
+  int klass_oop_size() const  { return object_size(); }
+
+  bool compute_is_subtype_of(klassOop k);
+
+  // Allocation
+  typeArrayOop allocate(int length, TRAPS);
+  typeArrayOop allocate_permanent(int length, TRAPS);  // used for class file structures
+  oop multi_allocate(int rank, jint* sizes, TRAPS);
+
+  // Copying
+  void  copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
+
+  // Iteration
+  int oop_oop_iterate(oop obj, OopClosure* blk);
+  int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
+
+  // Garbage collection
+  void oop_follow_contents(oop obj);
+  int  oop_adjust_pointers(oop obj);
+
+  // Parallel Scavenge and Parallel Old
+  PARALLEL_GC_DECLS
+
+ protected:
+  // Find n'th dimensional array
+  virtual klassOop array_klass_impl(bool or_null, int n, TRAPS);
+
+  // Returns the array class with this class as element type
+  virtual klassOop array_klass_impl(bool or_null, TRAPS);
+
+ public:
+  // Casting from klassOop
+  static typeArrayKlass* cast(klassOop k) {
+    assert(k->klass_part()->oop_is_typeArray_slow(), "cast to typeArrayKlass");
+    return (typeArrayKlass*) k->klass_part();
+  }
+
+  // Naming
+  static const char* external_name(BasicType type);
+
+  // Sizing
+  static int header_size()  { return oopDesc::header_size() + sizeof(typeArrayKlass)/HeapWordSize; }
+  int object_size() const   { return arrayKlass::object_size(header_size()); }
+
+  // Initialization (virtual from Klass)
+  void initialize(TRAPS);
+
+ private:
+   // Helpers
+   static klassOop array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS);
+
+#ifndef PRODUCT
+ public:
+  // Printing
+  void oop_print_on(oop obj, outputStream* st);
+#endif
+ public:
+  const char* internal_name() const;
+};