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src/share/vm/oops/typeArrayKlass.hpp@246d977b51f2 (annotated)

src/share/vm/oops/typeArrayKlass.hpp

Mon, 25 Jun 2012 21:33:35 -0400

author

coleenp

date

Mon, 25 Jun 2012 21:33:35 -0400

changeset 3875

246d977b51f2

parent 3157

a92cdbac8b9e

child 4037

da91efe96a93

permissions

-rw-r--r--

7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table
Summary: Cannot delete _buckets and HashtableEntries in shared space (CDS)
Reviewed-by: acorn, kvn, dlong, dcubed, kamg

duke@435	1	/*
stefank@2314	2	* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
stefank@2314	26	#define SHARE_VM_OOPS_TYPEARRAYKLASS_HPP
stefank@2314	27
stefank@2314	28	#include "oops/arrayKlass.hpp"
stefank@2314	29
duke@435	30	// A typeArrayKlass is the klass of a typeArray
duke@435	31	// It contains the type and size of the elements
duke@435	32
duke@435	33	class typeArrayKlass : public arrayKlass {
duke@435	34	friend class VMStructs;
duke@435	35	private:
duke@435	36	jint _max_length; // maximum number of elements allowed in an array
duke@435	37	public:
duke@435	38	// instance variables
duke@435	39	jint max_length() { return _max_length; }
duke@435	40	void set_max_length(jint m) { _max_length = m; }
duke@435	41
duke@435	42	// testers
duke@435	43	bool oop_is_typeArray_slow() const { return true; }
duke@435	44
duke@435	45	// klass allocation
duke@435	46	DEFINE_ALLOCATE_PERMANENT(typeArrayKlass);
jcoomes@916	47	static klassOop create_klass(BasicType type, int scale, const char* name_str,
jcoomes@916	48	TRAPS);
jcoomes@916	49	static inline klassOop create_klass(BasicType type, int scale, TRAPS) {
jcoomes@916	50	return create_klass(type, scale, external_name(type), CHECK_NULL);
jcoomes@916	51	}
duke@435	52
duke@435	53	int oop_size(oop obj) const;
duke@435	54	int klass_oop_size() const { return object_size(); }
duke@435	55
duke@435	56	bool compute_is_subtype_of(klassOop k);
duke@435	57
duke@435	58	// Allocation
kvn@3157	59	typeArrayOop allocate_common(int length, bool do_zero, TRAPS);
kvn@3157	60	typeArrayOop allocate(int length, TRAPS) { return allocate_common(length, true, THREAD); }
duke@435	61	typeArrayOop allocate_permanent(int length, TRAPS); // used for class file structures
duke@435	62	oop multi_allocate(int rank, jint* sizes, TRAPS);
duke@435	63
duke@435	64	// Copying
duke@435	65	void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
duke@435	66
duke@435	67	// Iteration
duke@435	68	int oop_oop_iterate(oop obj, OopClosure* blk);
duke@435	69	int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
duke@435	70
duke@435	71	// Garbage collection
duke@435	72	void oop_follow_contents(oop obj);
duke@435	73	int oop_adjust_pointers(oop obj);
duke@435	74
duke@435	75	// Parallel Scavenge and Parallel Old
duke@435	76	PARALLEL_GC_DECLS
duke@435	77
duke@435	78	protected:
duke@435	79	// Find n'th dimensional array
duke@435	80	virtual klassOop array_klass_impl(bool or_null, int n, TRAPS);
duke@435	81
duke@435	82	// Returns the array class with this class as element type
duke@435	83	virtual klassOop array_klass_impl(bool or_null, TRAPS);
duke@435	84
duke@435	85	public:
duke@435	86	// Casting from klassOop
duke@435	87	static typeArrayKlass* cast(klassOop k) {
duke@435	88	assert(k->klass_part()->oop_is_typeArray_slow(), "cast to typeArrayKlass");
duke@435	89	return (typeArrayKlass*) k->klass_part();
duke@435	90	}
duke@435	91
duke@435	92	// Naming
duke@435	93	static const char* external_name(BasicType type);
duke@435	94
duke@435	95	// Sizing
duke@435	96	static int header_size() { return oopDesc::header_size() + sizeof(typeArrayKlass)/HeapWordSize; }
duke@435	97	int object_size() const { return arrayKlass::object_size(header_size()); }
duke@435	98
duke@435	99	// Initialization (virtual from Klass)
duke@435	100	void initialize(TRAPS);
duke@435	101
duke@435	102	private:
duke@435	103	// Helpers
duke@435	104	static klassOop array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS);
duke@435	105
duke@435	106	#ifndef PRODUCT
duke@435	107	public:
duke@435	108	// Printing
duke@435	109	void oop_print_on(oop obj, outputStream* st);
duke@435	110	#endif
duke@435	111	public:
duke@435	112	const char* internal_name() const;
duke@435	113	};
stefank@2314	114
stefank@2314	115	#endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP