1 /*
2 * Copyright (c) 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
25 #include "precompiled.hpp"
26 #include "runtime/os.hpp"
27 #include "utilities/ticks.inline.hpp"
28
29 #ifdef ASSERT
30 const jlong Ticks::invalid_time_stamp = -2; // 0xFFFF FFFF`FFFF FFFE
31 #endif
32
33 void Ticks::stamp() {
34 _stamp_ticks = os::elapsed_counter();
35 }
36
37 const Ticks Ticks::now() {
38 Ticks t;
39 t.stamp();
40 return t;
41 }
42
43 Tickspan::Tickspan(const Ticks& end, const Ticks& start) {
44 assert(end.value() != Ticks::invalid_time_stamp, "end is unstamped!");
45 assert(start.value() != Ticks::invalid_time_stamp, "start is unstamped!");
46
47 assert(end >= start, "negative time!");
48
49 _span_ticks = end.value() - start.value();
50 }
51
52 template <typename ReturnType>
53 static ReturnType time_conversion(const Tickspan& span, TicksToTimeHelper::Unit unit) {
54 assert(TicksToTimeHelper::SECONDS == unit ||
55 TicksToTimeHelper::MILLISECONDS == unit, "invalid unit!");
56
57 ReturnType frequency_per_unit = (ReturnType)os::elapsed_frequency() / (ReturnType)unit;
58
59 return (ReturnType) ((ReturnType)span.value() / frequency_per_unit);
60 }
61
62 double TicksToTimeHelper::seconds(const Tickspan& span) {
63 return time_conversion<double>(span, SECONDS);
64 }
65
66 jlong TicksToTimeHelper::milliseconds(const Tickspan& span) {
67 return time_conversion<jlong>(span, MILLISECONDS);
68 }
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1 /*
2 * Copyright (c) 2013, 2018, 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
25 #include "precompiled.hpp"
26 #include "runtime/os.hpp"
27 #include "utilities/ticks.inline.hpp"
28
29 #ifdef X86
30 #include "rdtsc_x86.hpp"
31 #endif
32
33 #include OS_CPU_HEADER(os)
34
35 ElapsedCounterStamped::ElapsedCounterStamped() : ElapsedCounter(os::elapsed_counter()) {}
36
37 void ElapsedCounter::stamp() {
38 _instant = now().value();
39 }
40
41 ElapsedCounter ElapsedCounter::now() {
42 return ElapsedCounterStamped();
43 }
44
45 #ifdef X86
46 FastElapsedCounterStamped::FastElapsedCounterStamped() : FastElapsedCounter(Rdtsc::elapsed_counter()) {}
47 #else
48 FastElapsedCounterStamped::FastElapsedCounterStamped() : FastElapsedCounter(os::elapsed_counter()) {}
49 #endif
50
51 void FastElapsedCounter::stamp() {
52 _instant = now().value();
53 }
54
55 FastElapsedCounter FastElapsedCounter::now() {
56 return FastElapsedCounterStamped();
57 }
58
59 TraceElapsedInterval::TraceElapsedInterval(const TraceElapsedCounter& end, const TraceElapsedCounter& start) :
60 _elapsed_interval(end.value() - start.value())
61 #ifdef X86
62 , _ft_elapsed_interval(end.ft_value() - start.ft_value())
63 #endif
64 {}
65
66 TraceElapsedInterval::TraceElapsedInterval(jlong interval) :
67 _elapsed_interval(interval)
68 #ifdef X86
69 , _ft_elapsed_interval(interval)
70 #endif
71 {}
72
73 TraceElapsedInterval& TraceElapsedInterval::operator+=(const TraceElapsedInterval& rhs) {
74 _elapsed_interval += rhs._elapsed_interval;
75 X86_ONLY(_ft_elapsed_interval += rhs._ft_elapsed_interval;)
76 return *this;
77 }
78
79 TraceElapsedInterval& TraceElapsedInterval::operator-=(const TraceElapsedInterval& rhs) {
80 _elapsed_interval -= rhs._elapsed_interval;
81 X86_ONLY(_ft_elapsed_interval -= rhs._ft_elapsed_interval;)
82 return *this;
83 }
84
85 jlong TraceElapsedInterval::ft_value() const {
86 #ifdef X86
87 return _ft_elapsed_interval.value();
88 #else
89 return _elapsed_interval.value();
90 #endif
91 }
92
93 TraceElapsedCounter::TraceElapsedCounter(jlong stamp) :
94 _elapsed(stamp)
95 #ifdef X86
96 , _ft_elapsed(stamp)
97 #endif
98 {}
99
100 TraceElapsedCounter TraceElapsedCounter::now() {
101 TraceElapsedCounterStamped dec;
102 return dec;
103 }
104
105 TraceElapsedCounter& TraceElapsedCounter::operator+=(const TraceElapsedInterval& rhs) {
106 _elapsed += rhs.value();
107 X86_ONLY(_ft_elapsed += rhs.ft_value();)
108 return *this;
109 }
110
111 TraceElapsedCounter& TraceElapsedCounter::operator-=(const TraceElapsedInterval& rhs) {
112 _elapsed -= rhs.value();
113 X86_ONLY(_ft_elapsed -= rhs.ft_value();)
114 return *this;
115 }
116
117 void TraceElapsedCounter::stamp() {
118 _elapsed.stamp();
119 X86_ONLY(_ft_elapsed.stamp();)
120 }
121
122 jlong TraceElapsedCounter::ft_value() const {
123 #ifdef X86
124 return _ft_elapsed.value();
125 #else
126 return _elapsed.value();
127 #endif
128 }
129
130 TraceElapsedCounterStamped::TraceElapsedCounterStamped() : TraceElapsedCounter() {
131 _elapsed.stamp();
132 X86_ONLY(_ft_elapsed.stamp());
133 }
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