1 /* 2 * Copyright (c) 2014, 2015, Dynatrace and/or its affiliates. All rights reserved. 3 * 4 * This file is part of the Lock Contention Tracing Subsystem for the HotSpot 5 * Virtual Machine, which is developed at Christian Doppler Laboratory on 6 * Monitoring and Evolution of Very-Large-Scale Software Systems. Please 7 * contact us at <http://mevss.jku.at/> if you need additional information 8 * or have any questions. 9 * 10 * This code is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License version 2 only, as 12 * published by the Free Software Foundation. 13 * 14 * This code is distributed in the hope that it will be useful, but WITHOUT 15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 17 * version 2 for more details (a copy is included in the LICENSE file that 18 * accompanied this code). 19 * 20 * You should have received a copy of the GNU General Public License version 21 * 2 along with this work. If not, see <http://www.gnu.org/licenses/>. 22 * 23 */ 24 25 #ifndef SHARE_VM_EVTRACE_TRACEREADERTHREAD_HPP 26 #define SHARE_VM_EVTRACE_TRACEREADERTHREAD_HPP 27 28 #include "runtime/thread.hpp" 29 30 class TraceReaderThread: public JavaThread { 31 private: 32 oop _object; 33 volatile bool _is_polling_queue; 34 35 TraceReaderThread(oop obj); 36 37 static void trace_reader_thread_entry(JavaThread* thread, TRAPS); 38 39 public: 40 virtual ~TraceReaderThread(); 41 42 virtual bool is_TraceReader_thread() const { return true; } 43 44 void oops_do(OopClosure* f, CLDClosure* cld_f, CodeBlobClosure* cf); 45 46 static TraceReaderThread * start(Handle flushq, Handle freeq, TRAPS); 47 48 bool is_polling_queue() { return _is_polling_queue; } 49 void set_is_polling_queue(bool polling) { 50 assert(_is_polling_queue != polling, "flip only"); 51 _is_polling_queue = polling; 52 } 53 54 void shutdown(TRAPS); 55 }; 56 57 #endif /* SHARE_VM_EVTRACE_TRACEREADERTHREAD_HPP */