1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. and/or its affiliates. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 #ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHSTRINGDEDUPTHREAD_HPP 25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHSTRINGDEDUPTHREAD_HPP 26 27 #include "gc_implementation/shared/concurrentGCThread.hpp" 28 #include "gc_implementation/shenandoah/shenandoahStrDedupQueue.hpp" 29 #include "memory/iterator.hpp" 30 31 class ShenandoahStrDedupStats; 32 33 class ShenandoahStrDedupThread: public ConcurrentGCThread { 34 private: 35 ShenandoahStrDedupQueueSet* _queues; 36 QueueChunkedList** _work_list; 37 volatile size_t _claimed; 38 39 public: 40 ShenandoahStrDedupThread(ShenandoahStrDedupQueueSet* queues); 41 ~ShenandoahStrDedupThread(); 42 43 void clear_claimed() { _claimed = 0; } 44 void parallel_oops_do(OopClosure* cl); 45 void parallel_cleanup(); 46 47 // For verification only 48 void oops_do_slow(OopClosure* cl); 49 50 virtual void run(); 51 virtual void stop(); 52 53 private: 54 bool poll(ShenandoahStrDedupStats* stats); 55 bool is_work_list_empty() const; 56 57 ShenandoahStrDedupQueueSet* queues() const { 58 return _queues; 59 } 60 61 size_t claim(); 62 }; 63 64 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHSTRINGDEDUPTHREAD_HPP