1/* 2 * Copyright (c) 2012, 2016, 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#ifndef SHARE_VM_TRACE_TRACEBACKEND_HPP 25#define SHARE_VM_TRACE_TRACEBACKEND_HPP 26 27#include "utilities/macros.hpp" 28#if INCLUDE_TRACE 29#include "runtime/globals.hpp" 30#include "runtime/os.hpp" 31#include "trace/traceTime.hpp" 32#include "tracefiles/traceEventIds.hpp" 33 34class TraceBackend { 35public: 36 static bool enabled(void) { 37 return EnableTracing; 38 } 39 40 static bool is_event_enabled(TraceEventId id) { 41 return enabled(); 42 } 43 44 static TracingTime time() { 45 return os::elapsed_counter(); 46 } 47 48 static void on_unloading_classes(void) { 49 } 50 51}; 52 53class TraceThreadData { 54public: 55 TraceThreadData() {} 56}; 57 58typedef TraceBackend Tracing; 59 60#else // !INCLUDE_TRACE 61#include "trace/noTraceBackend.hpp" 62#endif // INCLUDE_TRACE 63#endif // SHARE_VM_TRACE_TRACEBACKEND_HPP 64