1 /* 2 * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_GC_G1_G1CONCURRENTREFINETHREAD_HPP 26 #define SHARE_VM_GC_G1_G1CONCURRENTREFINETHREAD_HPP 27 28 #include "gc/g1/dirtyCardQueue.hpp" 29 #include "gc/shared/concurrentGCThread.hpp" 30 31 // Forward Decl. 32 class CardTableEntryClosure; 33 class G1ConcurrentRefine; 34 35 // One or more G1 Concurrent Refinement Threads may be active if concurrent 36 // refinement is in progress. 37 class G1ConcurrentRefineThread: public ConcurrentGCThread { 38 friend class VMStructs; 39 friend class G1CollectedHeap; 40 41 double _vtime_start; // Initial virtual time. 42 double _vtime_accum; // Accumulated virtual time. 43 uint _worker_id; 44 uint _worker_id_offset; 45 46 bool _active; 47 Monitor* _monitor; 48 G1ConcurrentRefine* _cr; 49 50 void wait_for_completed_buffers(); 51 52 void set_active(bool x) { _active = x; } 53 // Deactivate this thread. 54 void deactivate(); 55 56 bool is_primary() { return (_worker_id == 0); } 57 58 void run_service(); 59 void stop_service(); 60 public: 61 G1ConcurrentRefineThread(G1ConcurrentRefine* cg1r, uint worker_id); 62 63 bool is_active(); 64 // Activate this thread. 65 void activate(); 66 67 // Total virtual time so far. 68 double vtime_accum() { return _vtime_accum; } 69 }; 70 71 #endif // SHARE_VM_GC_G1_G1CONCURRENTREFINETHREAD_HPP