1 /* 2 * Copyright (c) 2007, 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 // Trim our work_queue so its length is below max at return 26 inline void Par_MarkRefsIntoAndScanClosure::trim_queue(uint max) { 27 while (_work_queue->size() > max) { 28 oop newOop; 29 if (_work_queue->pop_local(newOop)) { 30 assert(newOop->is_oop(), "Expected an oop"); 31 assert(_bit_map->isMarked((HeapWord*)newOop), 32 "only grey objects on this stack"); 33 // iterate over the oops in this oop, marking and pushing 34 // the ones in CMS heap (i.e. in _span). 35 newOop->oop_iterate(&_par_pushAndMarkClosure); 36 } 37 } 38 } 39 40 #ifndef PRODUCT 41 void KlassRememberingOopClosure::check_remember_klasses() const { 42 assert(_should_remember_klasses == must_remember_klasses(), 43 "Should remember klasses in this context."); 44 } 45 #endif 46 47 void KlassRememberingOopClosure::remember_klass(Klass* k) { 48 if (!_revisit_stack->push(oop(k))) { 49 fatal("Revisit stack overflow in PushOrMarkClosure"); 50 } 51 check_remember_klasses(); 52 } 53 54 inline void PushOrMarkClosure::remember_mdo(DataLayout* v) { 55 // TBD 56 } 57 58 59 void Par_KlassRememberingOopClosure::remember_klass(Klass* k) { 60 if (!_revisit_stack->par_push(oop(k))) { 61 fatal("Revisit stack overflow in Par_KlassRememberingOopClosure"); 62 } 63 check_remember_klasses(); 64 } 65 66 inline void Par_PushOrMarkClosure::remember_mdo(DataLayout* v) { 67 // TBD 68 } 69 70 inline void PushOrMarkClosure::do_yield_check() { 71 _parent->do_yield_check(); 72 } 73 74 inline void Par_PushOrMarkClosure::do_yield_check() { 75 _parent->do_yield_check(); 76 }