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66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018, 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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#include "precompiled.hpp"
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#include "gc/shared/stringdedup/stringDedup.hpp"
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#include "gc/shared/stringdedup/stringDedupQueue.hpp"
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#include "runtime/atomic.hpp"
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StringDedupQueue* StringDedupQueue::_queue = NULL;
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volatile size_t StringDedupQueue::_claimed_index = 0;
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size_t StringDedupQueue::claim() {
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return Atomic::add(&_claimed_index, size_t(1)) - 1;
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}
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void StringDedupQueue::unlink_or_oops_do(StringDedupUnlinkOrOopsDoClosure* cl) {
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size_t claimed_queue = claim();
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while (claimed_queue < queue()->num_queues()) {
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queue()->unlink_or_oops_do_impl(cl, claimed_queue);
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claimed_queue = claim();
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}
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}
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void StringDedupQueue::print_statistics() {
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queue()->print_statistics_impl();
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}
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void StringDedupQueue::verify() {
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queue()->verify_impl();
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}
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StringDedupQueue* const StringDedupQueue::queue() {
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assert(_queue != NULL, "Not yet initialized");
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return _queue;
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}
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void StringDedupQueue::gc_prologue() {
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_claimed_index = 0;
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}
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void StringDedupQueue::gc_epilogue() {
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assert(_claimed_index >= queue()->num_queues() || _claimed_index == 0, "All or nothing");
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}
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