154a1a02bf
Use script and some manual fixup to fix directores names in include guards. Reviewed-by: lfoltan, eosterlund, kbarrett
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*
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* Copyright (c) 2014, 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_G1_G1STRINGDEDUPQUEUE_HPP
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#define SHARE_GC_G1_G1STRINGDEDUPQUEUE_HPP
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#include "gc/shared/stringdedup/stringDedupQueue.hpp"
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#include "memory/allocation.hpp"
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#include "oops/oop.hpp"
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#include "utilities/stack.hpp"
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class StringDedupUnlinkOrOopsDoClosure;
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//
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// G1 enqueues candidates during the stop-the-world mark/evacuation phase.
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//
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class G1StringDedupQueue : public StringDedupQueue {
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private:
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typedef Stack<oop, mtGC> G1StringDedupWorkerQueue;
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static const size_t _max_size;
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static const size_t _max_cache_size;
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G1StringDedupWorkerQueue* _queues;
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size_t _nqueues;
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size_t _cursor;
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bool _cancel;
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volatile bool _empty;
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// Statistics counter, only used for logging.
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uintx _dropped;
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~G1StringDedupQueue();
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void unlink_or_oops_do(StringDedupUnlinkOrOopsDoClosure* cl, size_t queue);
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public:
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G1StringDedupQueue();
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protected:
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// Blocks and waits for the queue to become non-empty.
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void wait_impl();
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// Wakes up any thread blocked waiting for the queue to become non-empty.
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void cancel_wait_impl();
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// Pushes a deduplication candidate onto a specific GC worker queue.
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void push_impl(uint worker_id, oop java_string);
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// Pops a deduplication candidate from any queue, returns NULL if
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// all queues are empty.
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oop pop_impl();
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size_t num_queues() const {
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return _nqueues;
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}
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void unlink_or_oops_do_impl(StringDedupUnlinkOrOopsDoClosure* cl, size_t queue);
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void print_statistics_impl();
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void verify_impl();
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};
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#endif // SHARE_GC_G1_G1STRINGDEDUPQUEUE_HPP
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