1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "gc/g1/g1FullGCMarker.inline.hpp" 27 28 G1FullGCMarker::G1FullGCMarker(uint worker_id, PreservedMarks* preserved_stack, G1CMBitMap* bitmap) : 29 _worker_id(worker_id), 30 _mark_closure(worker_id, this, G1CollectedHeap::heap()->ref_processor_stw()), 31 _verify_closure(VerifyOption_G1UseFullMarking), 32 _cld_closure(mark_closure()), 33 _stack_closure(this), 34 _preserved_stack(preserved_stack), 35 _bitmap(bitmap) { 36 _oop_stack.initialize(); 37 _objarray_stack.initialize(); 38 } 39 40 G1FullGCMarker::~G1FullGCMarker() { 41 assert(is_empty(), "Must be empty at this point"); 42 } 43 44 void G1FullGCMarker::complete_marking(OopQueueSet* oop_stacks, 45 ObjArrayTaskQueueSet* array_stacks, 46 ParallelTaskTerminator* terminator) { 47 int hash_seed = 17; 48 do { 49 drain_stack(); 50 ObjArrayTask steal_array; 51 if (array_stacks->steal(_worker_id, &hash_seed, steal_array)) { 52 follow_array_chunk(objArrayOop(steal_array.obj()), steal_array.index()); 53 } else { 54 oop steal_oop; 55 if (oop_stacks->steal(_worker_id, &hash_seed, steal_oop)) { 56 follow_object(steal_oop); 57 } 58 } 59 } while (!is_empty() || !terminator->offer_termination()); 60 }