89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018, 2019, 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_GC_SHARED_PARALLELCLEANING_HPP
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#define SHARE_GC_SHARED_PARALLELCLEANING_HPP
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#include "classfile/classLoaderDataGraph.hpp"
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#include "code/codeCache.hpp"
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#include "gc/shared/oopStorageParState.hpp"
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#include "gc/shared/stringdedup/stringDedup.hpp"
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#include "gc/shared/workgroup.hpp"
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class StringDedupCleaningTask : public AbstractGangTask {
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StringDedupUnlinkOrOopsDoClosure _dedup_closure;
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public:
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StringDedupCleaningTask(BoolObjectClosure* is_alive, OopClosure* keep_alive, bool resize_table);
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~StringDedupCleaningTask();
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void work(uint worker_id);
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};
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class CodeCacheUnloadingTask {
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CodeCache::UnloadingScope _unloading_scope;
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const bool _unloading_occurred;
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const uint _num_workers;
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// Variables used to claim nmethods.
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CompiledMethod* _first_nmethod;
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CompiledMethod* volatile _claimed_nmethod;
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public:
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CodeCacheUnloadingTask(uint num_workers, BoolObjectClosure* is_alive, bool unloading_occurred);
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~CodeCacheUnloadingTask();
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private:
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static const int MaxClaimNmethods = 16;
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void claim_nmethods(CompiledMethod** claimed_nmethods, int *num_claimed_nmethods);
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public:
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// Cleaning and unloading of nmethods.
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void work(uint worker_id);
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};
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class KlassCleaningTask : public StackObj {
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volatile int _clean_klass_tree_claimed;
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ClassLoaderDataGraphKlassIteratorAtomic _klass_iterator;
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public:
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KlassCleaningTask();
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private:
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bool claim_clean_klass_tree_task();
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InstanceKlass* claim_next_klass();
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public:
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void clean_klass(InstanceKlass* ik) {
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ik->clean_weak_instanceklass_links();
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}
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void work();
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};
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#endif // SHARE_GC_SHARED_PARALLELCLEANING_HPP
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