1 /* 2 * Copyright (c) 2007, 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 #ifndef SHARE_VM_GC_CMS_CMSOOPCLOSURES_INLINE_HPP 26 #define SHARE_VM_GC_CMS_CMSOOPCLOSURES_INLINE_HPP 27 28 #include "gc/cms/cmsOopClosures.hpp" 29 #include "gc/cms/concurrentMarkSweepGeneration.hpp" 30 #include "gc/shared/taskqueue.inline.hpp" 31 #include "oops/access.inline.hpp" 32 #include "oops/compressedOops.inline.hpp" 33 #include "oops/oop.inline.hpp" 34 35 // MetadataVisitingOopIterateClosure and MetadataVisitingOopsInGenClosure are duplicated, 36 // until we get rid of OopsInGenClosure. 37 38 inline void MetadataVisitingOopsInGenClosure::do_klass(Klass* k) { 39 ClassLoaderData* cld = k->class_loader_data(); 40 MetadataVisitingOopsInGenClosure::do_cld(cld); 41 } 42 43 inline void MetadataVisitingOopsInGenClosure::do_cld(ClassLoaderData* cld) { 44 bool claim = true; // Must claim the class loader data before processing. 45 cld->oops_do(this, claim); 46 } 47 48 // Decode the oop and call do_oop on it. 49 #define DO_OOP_WORK_IMPL(cls) \ 50 template <class T> void cls::do_oop_work(T* p) { \ 51 T heap_oop = RawAccess<>::oop_load(p); \ 52 if (!CompressedOops::is_null(heap_oop)) { \ 53 oop obj = CompressedOops::decode_not_null(heap_oop); \ 54 do_oop(obj); \ 55 } \ 56 } 57 58 #define DO_OOP_WORK_NV_IMPL(cls) \ 59 DO_OOP_WORK_IMPL(cls) \ 60 inline void cls::do_oop(oop* p) { cls::do_oop_work(p); } \ 61 inline void cls::do_oop(narrowOop* p) { cls::do_oop_work(p); } 62 63 DO_OOP_WORK_NV_IMPL(MarkRefsIntoClosure) 64 DO_OOP_WORK_NV_IMPL(ParMarkRefsIntoClosure) 65 DO_OOP_WORK_NV_IMPL(MarkRefsIntoVerifyClosure) 66 DO_OOP_WORK_NV_IMPL(PushAndMarkClosure) 67 DO_OOP_WORK_NV_IMPL(ParPushAndMarkClosure) 68 DO_OOP_WORK_NV_IMPL(MarkRefsIntoAndScanClosure) 69 DO_OOP_WORK_NV_IMPL(ParMarkRefsIntoAndScanClosure) 70 71 // Trim our work_queue so its length is below max at return 72 inline void ParMarkRefsIntoAndScanClosure::trim_queue(uint max) { 73 while (_work_queue->size() > max) { 74 oop newOop; 75 if (_work_queue->pop_local(newOop)) { 76 assert(oopDesc::is_oop(newOop), "Expected an oop"); 77 assert(_bit_map->isMarked((HeapWord*)newOop), 78 "only grey objects on this stack"); 79 // iterate over the oops in this oop, marking and pushing 80 // the ones in CMS heap (i.e. in _span). 81 newOop->oop_iterate(&_parPushAndMarkClosure); 82 } 83 } 84 } 85 86 DO_OOP_WORK_NV_IMPL(PushOrMarkClosure) 87 DO_OOP_WORK_NV_IMPL(ParPushOrMarkClosure) 88 DO_OOP_WORK_NV_IMPL(CMSKeepAliveClosure) 89 DO_OOP_WORK_NV_IMPL(CMSInnerParMarkAndPushClosure) 90 DO_OOP_WORK_NV_IMPL(CMSParKeepAliveClosure) 91 92 #endif // SHARE_VM_GC_CMS_CMSOOPCLOSURES_INLINE_HPP