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src/share/vm/oops/typeArrayKlass.hpp@443791f333a2 (annotated)

src/share/vm/oops/typeArrayKlass.hpp

Tue, 14 Oct 2008 10:15:33 -0400

author

coleenp

date

Tue, 14 Oct 2008 10:15:33 -0400

changeset 833

443791f333a2

parent 435

a61af66fc99e

child 916

7d7a7c599c17

permissions

-rw-r--r--

6700107: java/lang/Class/forName/TooManyDimensions.java crashes with SIGSEGV in c2 compiler with fastdebug
Summary: objArrayKlass::compute_modifier_flags was unnecessarily recursive
Reviewed-by: kamg

duke@435	1	/*
duke@435	2	* Copyright 1997-2007 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// A typeArrayKlass is the klass of a typeArray
duke@435	26	// It contains the type and size of the elements
duke@435	27
duke@435	28	class typeArrayKlass : public arrayKlass {
duke@435	29	friend class VMStructs;
duke@435	30	private:
duke@435	31	jint _max_length; // maximum number of elements allowed in an array
duke@435	32	public:
duke@435	33	// instance variables
duke@435	34	jint max_length() { return _max_length; }
duke@435	35	void set_max_length(jint m) { _max_length = m; }
duke@435	36
duke@435	37	// testers
duke@435	38	bool oop_is_typeArray_slow() const { return true; }
duke@435	39
duke@435	40	// klass allocation
duke@435	41	DEFINE_ALLOCATE_PERMANENT(typeArrayKlass);
duke@435	42	static klassOop create_klass(BasicType type, int scale, TRAPS);
duke@435	43
duke@435	44	int oop_size(oop obj) const;
duke@435	45	int klass_oop_size() const { return object_size(); }
duke@435	46
duke@435	47	bool compute_is_subtype_of(klassOop k);
duke@435	48
duke@435	49	// Allocation
duke@435	50	typeArrayOop allocate(int length, TRAPS);
duke@435	51	typeArrayOop allocate_permanent(int length, TRAPS); // used for class file structures
duke@435	52	oop multi_allocate(int rank, jint* sizes, TRAPS);
duke@435	53
duke@435	54	// Copying
duke@435	55	void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
duke@435	56
duke@435	57	// Iteration
duke@435	58	int oop_oop_iterate(oop obj, OopClosure* blk);
duke@435	59	int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
duke@435	60
duke@435	61	// Garbage collection
duke@435	62	void oop_follow_contents(oop obj);
duke@435	63	int oop_adjust_pointers(oop obj);
duke@435	64
duke@435	65	// Parallel Scavenge and Parallel Old
duke@435	66	PARALLEL_GC_DECLS
duke@435	67
duke@435	68	protected:
duke@435	69	// Find n'th dimensional array
duke@435	70	virtual klassOop array_klass_impl(bool or_null, int n, TRAPS);
duke@435	71
duke@435	72	// Returns the array class with this class as element type
duke@435	73	virtual klassOop array_klass_impl(bool or_null, TRAPS);
duke@435	74
duke@435	75	public:
duke@435	76	// Casting from klassOop
duke@435	77	static typeArrayKlass* cast(klassOop k) {
duke@435	78	assert(k->klass_part()->oop_is_typeArray_slow(), "cast to typeArrayKlass");
duke@435	79	return (typeArrayKlass*) k->klass_part();
duke@435	80	}
duke@435	81
duke@435	82	// Naming
duke@435	83	static const char* external_name(BasicType type);
duke@435	84
duke@435	85	// Sizing
duke@435	86	static int header_size() { return oopDesc::header_size() + sizeof(typeArrayKlass)/HeapWordSize; }
duke@435	87	int object_size() const { return arrayKlass::object_size(header_size()); }
duke@435	88
duke@435	89	// Initialization (virtual from Klass)
duke@435	90	void initialize(TRAPS);
duke@435	91
duke@435	92	private:
duke@435	93	// Helpers
duke@435	94	static klassOop array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS);
duke@435	95
duke@435	96	#ifndef PRODUCT
duke@435	97	public:
duke@435	98	// Printing
duke@435	99	void oop_print_on(oop obj, outputStream* st);
duke@435	100	#endif
duke@435	101	public:
duke@435	102	const char* internal_name() const;
duke@435	103	};