1 /* 2 * Copyright (c) 2012, 2013, 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 29 #if INCLUDE_TRACE 30 31 #include "runtime/globals.hpp" 32 #include "runtime/os.hpp" 33 #include "trace/traceTime.hpp" 34 #include "tracefiles/traceEventIds.hpp" 35 36 class TraceBackend { 37 public: 38 static bool enabled(void) { 39 return EnableTracing; 40 } 41 42 static bool is_event_enabled(TraceEventId id) { 43 return enabled(); 44 } 45 46 static TracingTime time() { 47 return os::elapsed_counter(); 48 } 49 50 static TracingTime time_adjustment(jlong time) { 51 return time; 52 } 53 54 static void on_unloading_classes(void) { 55 } 56 }; 57 58 class TraceThreadData { 59 public: 60 TraceThreadData() {} 61 }; 62 63 typedef TraceBackend Tracing; 64 65 #else /* INCLUDE_TRACE */ 66 67 #include "trace/noTraceBackend.hpp" 68 69 #endif /* INCLUDE_TRACE */ 70 #endif /* SHARE_VM_TRACE_TRACEBACKEND_HPP */