• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/oops/instanceKlassKlass.hpp@5f24d0319e54 (annotated)

src/share/vm/oops/instanceKlassKlass.hpp

Fri, 29 Jan 2010 09:27:22 -0800

author

kvn

date

Fri, 29 Jan 2010 09:27:22 -0800

changeset 1637

5f24d0319e54

parent 1590

4e6abf09f540

child 1907

c18cbe5936b8

permissions

-rw-r--r--

4360113: Evict nmethods when code cache gets full
Summary: Speculatively unload the oldest nmethods when code cache gets full.
Reviewed-by: never, kvn
Contributed-by: eric.caspole@amd.com

duke@435	1	/*
xdono@1383	2	* Copyright 1997-2009 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	// An instanceKlassKlass is the klass of an instanceKlass
duke@435	26
duke@435	27	class instanceKlassKlass : public klassKlass {
duke@435	28	public:
duke@435	29	// Dispatched operation
duke@435	30	bool oop_is_klass() const { return true; }
duke@435	31	bool oop_is_instanceKlass() const { return true; }
duke@435	32
duke@435	33	int oop_size(oop obj) const;
duke@435	34	int klass_oop_size() const { return object_size(); }
duke@435	35
duke@435	36	// Allocation
duke@435	37	DEFINE_ALLOCATE_PERMANENT(instanceKlassKlass);
duke@435	38	static klassOop create_klass(TRAPS);
duke@435	39	klassOop allocate_instance_klass(int vtable_len,
duke@435	40	int itable_len,
duke@435	41	int static_field_size,
jcoomes@1374	42	unsigned int nonstatic_oop_map_count,
duke@435	43	ReferenceType rt,
duke@435	44	TRAPS);
duke@435	45
duke@435	46	// Casting from klassOop
duke@435	47	static instanceKlassKlass* cast(klassOop k) {
duke@435	48	assert(k->klass_part()->oop_is_klass(), "cast to instanceKlassKlass");
duke@435	49	return (instanceKlassKlass*) k->klass_part();
duke@435	50	}
duke@435	51
duke@435	52	// Sizing
duke@435	53	static int header_size() { return oopDesc::header_size() + sizeof(instanceKlassKlass)/HeapWordSize; }
duke@435	54	int object_size() const { return align_object_size(header_size()); }
duke@435	55
duke@435	56	// Garbage collection
duke@435	57	void oop_follow_contents(oop obj);
duke@435	58	int oop_adjust_pointers(oop obj);
duke@435	59	bool oop_is_parsable(oop obj) const;
duke@435	60
duke@435	61	// Parallel Scavenge and Parallel Old
duke@435	62	PARALLEL_GC_DECLS
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	private:
duke@435	69	// Apply closure to the InstanceKlass oops that are outside the java heap.
duke@435	70	inline void iterate_c_heap_oops(instanceKlass* ik, OopClosure* closure);
duke@435	71
duke@435	72	public:
duke@435	73	// Printing
jrose@1590	74	void oop_print_value_on(oop obj, outputStream* st);
jrose@1590	75	#ifndef PRODUCT
duke@435	76	void oop_print_on(oop obj, outputStream* st);
duke@435	77	#endif
duke@435	78
duke@435	79	// Verification
duke@435	80	const char* internal_name() const;
duke@435	81	void oop_verify_on(oop obj, outputStream* st);
duke@435	82	// tells whether obj is partially constructed (gc during class loading)
duke@435	83	bool oop_partially_loaded(oop obj) const;
duke@435	84	void oop_set_partially_loaded(oop obj);
duke@435	85	};