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