1/*
2 * Copyright (c) 2011, 2019, 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
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23 */
24
25#ifndef SHARE_JFR_UTILITIES_JFRTIMECONVERTER_HPP
26#define SHARE_JFR_UTILITIES_JFRTIMECONVERTER_HPP
27
28#include "memory/allocation.hpp"
29#include "utilities/globalDefinitions.hpp"
30
31class JfrTimeConverter : AllStatic {
32 private:
33 static double counter_to_nano_multiplier(bool is_os_time = false);
34 static double counter_to_nanos_internal(jlong c, bool is_os_time = false);
35 static double counter_to_millis_internal(jlong c, bool is_os_time = false);
36 static void initialize();
37
38 public:
39 static const double NANOS_PER_SEC;
40 static const double NANOS_PER_MILLISEC;
41 static const double NANOS_PER_MICROSEC;
42
43 // factors
44 static double nano_to_counter_multiplier(bool is_os_time = false);
45 // ticks to nanos
46 static jlong counter_to_nanos(jlong c, bool is_os_time = false);
47 // ticks to millis
48 static jlong counter_to_millis(jlong c, bool is_os_time = false);
49 // nanos to ticks
50 static jlong nanos_to_countertime(jlong c, bool as_os_time = false);
51};
52
53#endif // SHARE_JFR_UTILITIES_JFRTIMECONVERTER_HPP
54