| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "gc/g1/g1FullGCMarker.inline.hpp" |
| #include "gc/shared/referenceProcessor.hpp" |
| #include "memory/iterator.inline.hpp" |
| |
| G1FullGCMarker::G1FullGCMarker(uint worker_id, PreservedMarks* preserved_stack, G1CMBitMap* bitmap) : |
| _worker_id(worker_id), |
| _mark_closure(worker_id, this, G1CollectedHeap::heap()->ref_processor_stw()), |
| _verify_closure(VerifyOption_G1UseFullMarking), |
| _cld_closure(mark_closure()), |
| _stack_closure(this), |
| _preserved_stack(preserved_stack), |
| _bitmap(bitmap) { |
| _oop_stack.initialize(); |
| _objarray_stack.initialize(); |
| } |
| |
| G1FullGCMarker::~G1FullGCMarker() { |
| assert(is_empty(), "Must be empty at this point"); |
| } |
| |
| void G1FullGCMarker::complete_marking(OopQueueSet* oop_stacks, |
| ObjArrayTaskQueueSet* array_stacks, |
| ParallelTaskTerminator* terminator) { |
| int hash_seed = 17; |
| do { |
| drain_stack(); |
| ObjArrayTask steal_array; |
| if (array_stacks->steal(_worker_id, &hash_seed, steal_array)) { |
| follow_array_chunk(objArrayOop(steal_array.obj()), steal_array.index()); |
| } else { |
| oop steal_oop; |
| if (oop_stacks->steal(_worker_id, &hash_seed, steal_oop)) { |
| follow_object(steal_oop); |
| } |
| } |
| } while (!is_empty() || !terminator->offer_termination()); |
| } |