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

src/share/vm/gc_implementation/parallelScavenge/psScavenge.inline.hpp@c9ca3f51cf41 (annotated)

src/share/vm/gc_implementation/parallelScavenge/psScavenge.inline.hpp

Thu, 16 Jun 2011 15:51:57 -0400

author

tonyp

date

Thu, 16 Jun 2011 15:51:57 -0400

changeset 2971

c9ca3f51cf41

parent 2708

1d1603768966

child 3536

95f6641e38e0

permissions

-rw-r--r--

6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
Summary: Remove two unused parameters from the mem_allocate() method and update its uses accordingly.
Reviewed-by: stefank, johnc

duke@435	1	/*
trims@2708	2	* Copyright (c) 2002, 2011, 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_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSSCAVENGE_INLINE_HPP
stefank@2314	26	#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSSCAVENGE_INLINE_HPP
stefank@2314	27
stefank@2314	28	#include "gc_implementation/parallelScavenge/cardTableExtension.hpp"
stefank@2314	29	#include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
stefank@2314	30	#include "gc_implementation/parallelScavenge/psPromotionManager.hpp"
stefank@2314	31	#include "gc_implementation/parallelScavenge/psScavenge.hpp"
stefank@2314	32
duke@435	33	inline void PSScavenge::save_to_space_top_before_gc() {
duke@435	34	ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
duke@435	35	_to_space_top_before_gc = heap->young_gen()->to_space()->top();
duke@435	36	}
duke@435	37
coleenp@548	38	template <class T> inline bool PSScavenge::should_scavenge(T* p) {
coleenp@548	39	T heap_oop = oopDesc::load_heap_oop(p);
coleenp@548	40	if (oopDesc::is_null(heap_oop)) return false;
coleenp@548	41	oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
coleenp@548	42	return PSScavenge::is_obj_in_young((HeapWord*)obj);
duke@435	43	}
duke@435	44
coleenp@548	45	template <class T>
coleenp@548	46	inline bool PSScavenge::should_scavenge(T* p, MutableSpace* to_space) {
duke@435	47	if (should_scavenge(p)) {
coleenp@548	48	oop obj = oopDesc::load_decode_heap_oop_not_null(p);
duke@435	49	// Skip objects copied to to_space since the scavenge started.
coleenp@548	50	HeapWord* const addr = (HeapWord*)obj;
duke@435	51	return addr < to_space_top_before_gc() || addr >= to_space->end();
duke@435	52	}
duke@435	53	return false;
duke@435	54	}
duke@435	55
coleenp@548	56	template <class T>
coleenp@548	57	inline bool PSScavenge::should_scavenge(T* p, bool check_to_space) {
duke@435	58	if (check_to_space) {
coleenp@548	59	ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
duke@435	60	return should_scavenge(p, heap->young_gen()->to_space());
duke@435	61	}
duke@435	62	return should_scavenge(p);
duke@435	63	}
duke@435	64
duke@435	65	// Attempt to "claim" oop at p via CAS, push the new obj if successful
duke@435	66	// This version tests the oop* to make sure it is within the heap before
duke@435	67	// attempting marking.
coleenp@548	68	template <class T>
duke@435	69	inline void PSScavenge::copy_and_push_safe_barrier(PSPromotionManager* pm,
coleenp@548	70	T* p) {
coleenp@548	71	assert(should_scavenge(p, true), "revisiting object?");
duke@435	72
coleenp@548	73	oop o = oopDesc::load_decode_heap_oop_not_null(p);
coleenp@548	74	oop new_obj = o->is_forwarded()
coleenp@548	75	? o->forwardee()
tonyp@2061	76	: pm->copy_to_survivor_space(o);
coleenp@548	77	oopDesc::encode_store_heap_oop_not_null(p, new_obj);
duke@435	78
duke@435	79	// We cannot mark without test, as some code passes us pointers
duke@435	80	// that are outside the heap.
coleenp@548	81	if ((!PSScavenge::is_obj_in_young((HeapWord*)p)) &&
duke@435	82	Universe::heap()->is_in_reserved(p)) {
coleenp@548	83	if (PSScavenge::is_obj_in_young((HeapWord*)new_obj)) {
coleenp@548	84	card_table()->inline_write_ref_field_gc(p, new_obj);
duke@435	85	}
duke@435	86	}
duke@435	87	}
stefank@2314	88
jcoomes@2661	89	class PSScavengeRootsClosure: public OopClosure {
jcoomes@2661	90	private:
jcoomes@2661	91	PSPromotionManager* _promotion_manager;
jcoomes@2661	92
jcoomes@2661	93	protected:
jcoomes@2661	94	template <class T> void do_oop_work(T *p) {
jcoomes@2661	95	if (PSScavenge::should_scavenge(p)) {
jcoomes@2661	96	// We never card mark roots, maybe call a func without test?
jcoomes@2661	97	PSScavenge::copy_and_push_safe_barrier(_promotion_manager, p);
jcoomes@2661	98	}
jcoomes@2661	99	}
jcoomes@2661	100	public:
jcoomes@2661	101	PSScavengeRootsClosure(PSPromotionManager* pm) : _promotion_manager(pm) { }
jcoomes@2661	102	void do_oop(oop* p) { PSScavengeRootsClosure::do_oop_work(p); }
jcoomes@2661	103	void do_oop(narrowOop* p) { PSScavengeRootsClosure::do_oop_work(p); }
jcoomes@2661	104	};
jcoomes@2661	105
stefank@2314	106	#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSSCAVENGE_INLINE_HPP