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10405
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1 /*
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24 #ifndef SHARE_VM_TRACE_TRACEBACKEND_HPP
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25 #define SHARE_VM_TRACE_TRACEBACKEND_HPP
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26
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27 #include "utilities/macros.hpp"
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28
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29 #if INCLUDE_TRACE
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30
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31 #include "runtime/globals.hpp"
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32 #include "runtime/os.hpp"
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33 #include "trace/traceTime.hpp"
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34 #include "tracefiles/traceEventIds.hpp"
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35
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36 class TraceBackend {
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37 public:
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38 static bool enabled(void) {
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39 return EnableTracing;
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40 }
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41
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42 static bool is_event_enabled(TraceEventId id) {
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43 return enabled();
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44 }
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45
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46 static TracingTime time() {
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47 return os::elapsed_counter();
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48 }
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49
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50 static TracingTime time_adjustment(jlong time) {
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51 return time;
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52 }
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53
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54 static void on_unloading_classes(void) {
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55 }
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56 };
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57
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58 class TraceThreadData {
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59 public:
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60 TraceThreadData() {}
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61 };
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62
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63 typedef TraceBackend Tracing;
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64
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65 #else /* INCLUDE_TRACE */
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66
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67 #include "trace/noTraceBackend.hpp"
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68
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69 #endif /* INCLUDE_TRACE */
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70 #endif /* SHARE_VM_TRACE_TRACEBACKEND_HPP */
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