author | stefank |
Sat, 26 May 2018 06:59:49 +0200 | |
changeset 50752 | 9d62da00bf15 |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_VM_GC_CMS_CMSOOPCLOSURES_INLINE_HPP |
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#define SHARE_VM_GC_CMS_CMSOOPCLOSURES_INLINE_HPP |
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#include "gc/cms/cmsOopClosures.hpp" |
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#include "gc/cms/concurrentMarkSweepGeneration.hpp" |
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#include "gc/shared/taskqueue.inline.hpp" |
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#include "oops/access.inline.hpp" |
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#include "oops/compressedOops.inline.hpp" |
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#include "oops/oop.inline.hpp" |
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// MetadataVisitingOopIterateClosure and MetadataVisitingOopsInGenClosure are duplicated, |
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// until we get rid of OopsInGenClosure. |
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inline void MetadataVisitingOopsInGenClosure::do_klass(Klass* k) { |
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ClassLoaderData* cld = k->class_loader_data(); |
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MetadataVisitingOopsInGenClosure::do_cld(cld); |
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} |
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inline void MetadataVisitingOopsInGenClosure::do_cld(ClassLoaderData* cld) { |
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bool claim = true; // Must claim the class loader data before processing. |
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cld->oops_do(this, claim); |
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} |
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// Decode the oop and call do_oop on it. |
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#define DO_OOP_WORK_IMPL(cls) \ |
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template <class T> void cls::do_oop_work(T* p) { \ |
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T heap_oop = RawAccess<>::oop_load(p); \ |
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if (!CompressedOops::is_null(heap_oop)) { \ |
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oop obj = CompressedOops::decode_not_null(heap_oop); \ |
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do_oop(obj); \ |
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} \ |
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} \ |
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inline void cls::do_oop(oop* p) { do_oop_work(p); } \ |
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inline void cls::do_oop(narrowOop* p) { do_oop_work(p); } |
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DO_OOP_WORK_IMPL(MarkRefsIntoClosure) |
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DO_OOP_WORK_IMPL(ParMarkRefsIntoClosure) |
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DO_OOP_WORK_IMPL(MarkRefsIntoVerifyClosure) |
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DO_OOP_WORK_IMPL(PushAndMarkClosure) |
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DO_OOP_WORK_IMPL(ParPushAndMarkClosure) |
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DO_OOP_WORK_IMPL(MarkRefsIntoAndScanClosure) |
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DO_OOP_WORK_IMPL(ParMarkRefsIntoAndScanClosure) |
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// Trim our work_queue so its length is below max at return |
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inline void ParMarkRefsIntoAndScanClosure::trim_queue(uint max) { |
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while (_work_queue->size() > max) { |
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oop newOop; |
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if (_work_queue->pop_local(newOop)) { |
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assert(oopDesc::is_oop(newOop), "Expected an oop"); |
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assert(_bit_map->isMarked((HeapWord*)newOop), |
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"only grey objects on this stack"); |
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// iterate over the oops in this oop, marking and pushing |
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// the ones in CMS heap (i.e. in _span). |
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newOop->oop_iterate(&_parPushAndMarkClosure); |
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} |
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} |
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} |
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DO_OOP_WORK_IMPL(PushOrMarkClosure) |
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DO_OOP_WORK_IMPL(ParPushOrMarkClosure) |
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DO_OOP_WORK_IMPL(CMSKeepAliveClosure) |
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DO_OOP_WORK_IMPL(CMSInnerParMarkAndPushClosure) |
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DO_OOP_WORK_IMPL(CMSParKeepAliveClosure) |
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#endif // SHARE_VM_GC_CMS_CMSOOPCLOSURES_INLINE_HPP |