traceBackend.hpp revision 4802:f2110083203d 
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
36class TraceBackend {
37public:
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
58class TraceThreadData {
59public:
60    TraceThreadData() {}
61};
62
63typedef 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 */
71