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src/share/vm/oops/symbolKlass.hpp@e392695de029 (annotated)

src/share/vm/oops/symbolKlass.hpp

Wed, 17 Mar 2010 11:01:05 +0100

author

fparain

date

Wed, 17 Mar 2010 11:01:05 +0100

changeset 1759

e392695de029

parent 1590

4e6abf09f540

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6935224: Adding new DTrace probes to work with Palantir
Summary: Adding probes related to thread scheduling and class initialization
Reviewed-by: kamg, never

duke@435	1	/*
duke@435	2	* Copyright 1997-2006 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 symbolKlass is the klass for a symbolOop
duke@435	26
duke@435	27	class symbolKlass : public Klass {
duke@435	28	friend class VMStructs;
duke@435	29	private:
duke@435	30	juint _alloc_size; // allocation profiling support
duke@435	31	public:
duke@435	32	// Allocation
duke@435	33	DEFINE_ALLOCATE_PERMANENT(symbolKlass);
duke@435	34	static klassOop create_klass(TRAPS);
duke@435	35	symbolOop allocate_symbol(u1* name, int len, TRAPS); // Assumes no characters larger than 0x7F
duke@435	36	bool allocate_symbols(int names_count, const char** names, int* lengths, symbolOop* sym_oops, TRAPS);
duke@435	37
duke@435	38	// Test operation
duke@435	39	bool oop_is_symbol() const { return true; }
duke@435	40
duke@435	41	// Casting from klassOop
duke@435	42	static symbolKlass* cast(klassOop k) {
duke@435	43	assert(k->klass_part()->oop_is_symbol(), "cast to symbolKlass");
duke@435	44	return (symbolKlass*) k->klass_part();
duke@435	45	}
duke@435	46
duke@435	47	static int header_size() { return oopDesc::header_size() + sizeof(symbolKlass)/HeapWordSize; }
duke@435	48	int oop_size(oop obj) const;
duke@435	49	int klass_oop_size() const { return object_size(); }
duke@435	50	int object_size() const { return align_object_size(header_size()); }
duke@435	51
duke@435	52	// Garbage collection
duke@435	53	void oop_follow_contents(oop obj);
duke@435	54	int oop_adjust_pointers(oop obj);
duke@435	55	bool oop_is_parsable(oop obj) const;
duke@435	56
duke@435	57	// Parallel Scavenge and Parallel Old
duke@435	58	PARALLEL_GC_DECLS
duke@435	59
duke@435	60	// Allocation profiling support
duke@435	61	juint alloc_size() const { return _alloc_size; }
duke@435	62	void set_alloc_size(juint n) { _alloc_size = n; }
duke@435	63
duke@435	64	// Iterators
duke@435	65	int oop_oop_iterate(oop obj, OopClosure* blk);
duke@435	66	int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr);
duke@435	67
duke@435	68	// Printing
duke@435	69	void oop_print_value_on(oop obj, outputStream* st);
jrose@1590	70	#ifndef PRODUCT
duke@435	71	void oop_print_on(oop obj, outputStream* st);
jrose@1590	72	#endif //PRODUCT
duke@435	73	const char* internal_name() const;
duke@435	74	};