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1 /* |
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2 * Copyright (c) 2019, Red Hat, Inc. All rights reserved. |
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3 * |
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4 * This code is free software; you can redistribute it and/or modify it |
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5 * under the terms of the GNU General Public License version 2 only, as |
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6 * published by the Free Software Foundation. |
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7 * |
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8 * This code is distributed in the hope that it will be useful, but WITHOUT |
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9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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11 * version 2 for more details (a copy is included in the LICENSE file that |
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12 * accompanied this code). |
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13 * |
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14 * You should have received a copy of the GNU General Public License version |
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15 * 2 along with this work; if not, write to the Free Software Foundation, |
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16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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17 * |
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18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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19 * or visit www.oracle.com if you need additional information or have any |
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20 * questions. |
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21 * |
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22 */ |
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23 |
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24 |
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25 #include "precompiled.hpp" |
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26 |
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27 #include "gc/shenandoah/shenandoahClosures.inline.hpp" |
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28 #include "gc/shenandoah/shenandoahCodeRoots.hpp" |
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29 #include "gc/shenandoah/shenandoahEvacOOMHandler.hpp" |
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30 #include "gc/shenandoah/shenandoahParallelCleaning.hpp" |
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31 #include "runtime/safepoint.hpp" |
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32 |
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33 ShenandoahClassUnloadingTask::ShenandoahClassUnloadingTask(BoolObjectClosure* is_alive, |
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34 uint num_workers, |
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35 bool unloading_occurred) : |
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36 AbstractGangTask("Parallel Class Unloading Task"), |
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37 _unloading_occurred(unloading_occurred), |
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38 _code_cache_task(num_workers, is_alive, unloading_occurred), |
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39 _klass_cleaning_task() { |
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40 assert(SafepointSynchronize::is_at_safepoint(), "Must be at a safepoint"); |
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41 } |
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42 |
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43 void ShenandoahClassUnloadingTask::work(uint worker_id) { |
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44 ShenandoahEvacOOMScope scope; |
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45 _code_cache_task.work(worker_id); |
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46 // Clean all klasses that were not unloaded. |
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47 // The weak metadata in klass doesn't need to be |
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48 // processed if there was no unloading. |
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49 if (_unloading_occurred) { |
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50 _klass_cleaning_task.work(); |
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51 } |
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52 } |