5a21a8c4dd
Instead of globally waiting for completion of strong nmethod processing during evacuation, synchronize the nmethods processing on a per-nmethod basis so that only one thread processes one nmethod at once using a state. This state indicates what work (strong/weak processing) needs to be done and what has already been done. Reviewed-by: sjohanss, kbarrett
53 lines
2.0 KiB
C++
53 lines
2.0 KiB
C++
/*
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* Copyright (c) 2015, 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 "gc/g1/g1CodeBlobClosure.hpp"
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#include "gc/g1/g1OopClosures.hpp"
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#include "memory/iterator.hpp"
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class G1CollectedHeap;
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class G1ParScanThreadState;
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// Simple holder object for a complete set of closures used by the G1 evacuation code.
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template <G1Mark Mark>
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class G1SharedClosures {
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static bool needs_strong_processing() {
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// Request strong code root processing when G1MarkFromRoot is passed in during
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// initial mark.
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return Mark == G1MarkFromRoot;
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}
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public:
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G1ParCopyClosure<G1BarrierNone, Mark> _oops;
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G1ParCopyClosure<G1BarrierCLD, Mark> _oops_in_cld;
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G1CLDScanClosure _clds;
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G1CodeBlobClosure _codeblobs;
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G1SharedClosures(G1CollectedHeap* g1h, G1ParScanThreadState* pss, bool process_only_dirty) :
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_oops(g1h, pss),
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_oops_in_cld(g1h, pss),
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_clds(&_oops_in_cld, process_only_dirty),
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_codeblobs(pss->worker_id(), &_oops, needs_strong_processing()) {}
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};
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