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src/share/vm/oops/typeArrayKlass.hpp@cc6a617fffd2 (annotated)

src/share/vm/oops/typeArrayKlass.hpp

Wed, 02 Jan 2013 20:28:09 -0500

author

coleenp

date

Wed, 02 Jan 2013 20:28:09 -0500

changeset 4395

cc6a617fffd2

parent 4142

d8ce2825b193

child 5176

6bd680e9ea35

permissions

-rw-r--r--

8005494: SIGSEGV in Rewriter::relocate_and_link() when testing Weblogic with CompressedOops and KlassPtrs
Summary: Relocate functions with jsr's when rewriting so not repeated after reading shared archive
Reviewed-by: twisti, jrose

duke@435	1	/*
coleenp@4037	2	* Copyright (c) 1997, 2012, 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
coleenp@4037	28	#include "classfile/classLoaderData.hpp"
stefank@2314	29	#include "oops/arrayKlass.hpp"
stefank@2314	30
coleenp@4142	31	// A TypeArrayKlass is the klass of a typeArray
duke@435	32	// It contains the type and size of the elements
duke@435	33
coleenp@4142	34	class TypeArrayKlass : public ArrayKlass {
duke@435	35	friend class VMStructs;
duke@435	36	private:
duke@435	37	jint _max_length; // maximum number of elements allowed in an array
coleenp@4037	38
coleenp@4037	39	// Constructor
coleenp@4142	40	TypeArrayKlass(BasicType type, Symbol* name);
coleenp@4142	41	static TypeArrayKlass* allocate(ClassLoaderData* loader_data, BasicType type, Symbol* name, TRAPS);
duke@435	42	public:
coleenp@4142	43	TypeArrayKlass() {} // For dummy objects.
coleenp@4037	44
duke@435	45	// instance variables
duke@435	46	jint max_length() { return _max_length; }
duke@435	47	void set_max_length(jint m) { _max_length = m; }
duke@435	48
duke@435	49	// testers
duke@435	50	bool oop_is_typeArray_slow() const { return true; }
duke@435	51
duke@435	52	// klass allocation
coleenp@4142	53	static TypeArrayKlass* create_klass(BasicType type, const char* name_str,
jcoomes@916	54	TRAPS);
coleenp@4037	55	static inline Klass* create_klass(BasicType type, int scale, TRAPS) {
coleenp@4142	56	TypeArrayKlass* tak = create_klass(type, external_name(type), CHECK_NULL);
coleenp@4037	57	assert(scale == (1 << tak->log2_element_size()), "scale must check out");
coleenp@4037	58	return tak;
jcoomes@916	59	}
duke@435	60
duke@435	61	int oop_size(oop obj) const;
duke@435	62
coleenp@4037	63	bool compute_is_subtype_of(Klass* k);
duke@435	64
duke@435	65	// Allocation
kvn@3157	66	typeArrayOop allocate_common(int length, bool do_zero, TRAPS);
kvn@3157	67	typeArrayOop allocate(int length, TRAPS) { return allocate_common(length, true, THREAD); }
duke@435	68	oop multi_allocate(int rank, jint* sizes, TRAPS);
duke@435	69
duke@435	70	// Copying
duke@435	71	void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
duke@435	72
duke@435	73	// Iteration
coleenp@4037	74	int oop_oop_iterate(oop obj, ExtendedOopClosure* blk);
coleenp@4037	75	int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr);
duke@435	76
duke@435	77	// Garbage collection
duke@435	78	void oop_follow_contents(oop obj);
duke@435	79	int oop_adjust_pointers(oop obj);
duke@435	80
duke@435	81	// Parallel Scavenge and Parallel Old
duke@435	82	PARALLEL_GC_DECLS
duke@435	83
duke@435	84	protected:
duke@435	85	// Find n'th dimensional array
coleenp@4037	86	virtual Klass* array_klass_impl(bool or_null, int n, TRAPS);
duke@435	87
duke@435	88	// Returns the array class with this class as element type
coleenp@4037	89	virtual Klass* array_klass_impl(bool or_null, TRAPS);
duke@435	90
duke@435	91	public:
coleenp@4037	92	// Casting from Klass*
coleenp@4142	93	static TypeArrayKlass* cast(Klass* k) {
coleenp@4142	94	assert(k->oop_is_typeArray(), "cast to TypeArrayKlass");
coleenp@4142	95	return (TypeArrayKlass*) k;
duke@435	96	}
duke@435	97
duke@435	98	// Naming
duke@435	99	static const char* external_name(BasicType type);
duke@435	100
duke@435	101	// Sizing
coleenp@4142	102	static int header_size() { return sizeof(TypeArrayKlass)/HeapWordSize; }
coleenp@4142	103	int size() const { return ArrayKlass::static_size(header_size()); }
duke@435	104
duke@435	105	// Initialization (virtual from Klass)
duke@435	106	void initialize(TRAPS);
duke@435	107
duke@435	108	public:
duke@435	109	// Printing
coleenp@4037	110	#ifndef PRODUCT
duke@435	111	void oop_print_on(oop obj, outputStream* st);
duke@435	112	#endif
coleenp@4037	113
coleenp@4037	114	void print_on(outputStream* st) const;
coleenp@4037	115	void print_value_on(outputStream* st) const;
coleenp@4037	116
duke@435	117	public:
duke@435	118	const char* internal_name() const;
duke@435	119	};
stefank@2314	120
stefank@2314	121	#endif // SHARE_VM_OOPS_TYPEARRAYKLASS_HPP