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src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp@04ff2f6cd0eb (annotated)

src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp

Tue, 17 Oct 2017 12:58:25 +0800

author

aoqi

date

Tue, 17 Oct 2017 12:58:25 +0800

changeset 7994

04ff2f6cd0eb

parent 7535

7ae4e26cb1e0

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
aoqi@0	26	#define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
aoqi@0	27
aoqi@0	28	#include "gc_implementation/g1/g1RemSet.hpp"
tschatzl@6937	29	#include "gc_implementation/g1/heapRegion.hpp"
aoqi@0	30	#include "gc_implementation/g1/heapRegionRemSet.hpp"
aoqi@0	31	#include "oops/oop.inline.hpp"
aoqi@0	32
aoqi@0	33	inline uint G1RemSet::n_workers() {
aoqi@0	34	if (_g1->workers() != NULL) {
aoqi@0	35	return _g1->workers()->total_workers();
aoqi@0	36	} else {
aoqi@0	37	return 1;
aoqi@0	38	}
aoqi@0	39	}
aoqi@0	40
aoqi@0	41	template <class T>
aoqi@0	42	inline void G1RemSet::write_ref(HeapRegion* from, T* p) {
aoqi@0	43	par_write_ref(from, p, 0);
aoqi@0	44	}
aoqi@0	45
aoqi@0	46	template <class T>
aoqi@0	47	inline void G1RemSet::par_write_ref(HeapRegion* from, T* p, int tid) {
aoqi@0	48	oop obj = oopDesc::load_decode_heap_oop(p);
brutisso@7049	49	if (obj == NULL) {
brutisso@7049	50	return;
brutisso@7049	51	}
brutisso@7049	52
aoqi@0	53	#ifdef ASSERT
aoqi@0	54	// can't do because of races
aoqi@0	55	// assert(obj == NULL || obj->is_oop(), "expected an oop");
aoqi@0	56
aoqi@0	57	// Do the safe subset of is_oop
aoqi@0	58	#ifdef CHECK_UNHANDLED_OOPS
brutisso@7049	59	oopDesc* o = obj.obj();
aoqi@0	60	#else
brutisso@7049	61	oopDesc* o = obj;
aoqi@0	62	#endif // CHECK_UNHANDLED_OOPS
brutisso@7049	63	assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
brutisso@7049	64	assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
aoqi@0	65	#endif // ASSERT
aoqi@0	66
aoqi@0	67	assert(from == NULL || from->is_in_reserved(p), "p is not in from");
aoqi@0	68
aoqi@0	69	HeapRegion* to = _g1->heap_region_containing(obj);
brutisso@7049	70	if (from != to) {
aoqi@0	71	assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
aoqi@0	72	to->rem_set()->add_reference(p, tid);
aoqi@0	73	}
aoqi@0	74	}
aoqi@0	75
aoqi@0	76	template <class T>
aoqi@0	77	inline void UpdateRSOopClosure::do_oop_work(T* p) {
aoqi@0	78	assert(_from != NULL, "from region must be non-NULL");
aoqi@0	79	_rs->par_write_ref(_from, p, _worker_i);
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP