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_TRACEBUFFER_HPP 26 #define SHARE_VM_EVTRACE_TRACEBUFFER_HPP 27 28 #include "memory/allocation.hpp" 29 30 class Thread; 31 32 class TraceBuffer: public CHeapObj<mtEventTracing> { 33 public: 34 TraceBuffer(size_t capacity); 35 virtual ~TraceBuffer() { } 36 37 void reset(); 38 bool reserve(size_t nbytes); 39 size_t filled_size() const; 40 41 void* operator new(size_t size, size_t capacity) throw(); 42 43 TraceBuffer *queue_next; 44 u1 *top; 45 const u1 *end; 46 Thread *owner; 47 s8 owner_id; 48 u1 data[0]; // follows here 49 }; 50 51 #include "evtrace/traceBuffer.inline.hpp" 52 53 #endif /* SHARE_VM_EVTRACE_TRACEBUFFER_HPP */