1 /*
2 * Copyright (c) 1997, 2010, 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 "oops/oop.inline.hpp"
27 #include "runtime/timer.hpp"
28 #include "utilities/ostream.hpp"
29 #ifdef TARGET_OS_FAMILY_linux
30 # include "os_linux.inline.hpp"
31 #endif
32 #ifdef TARGET_OS_FAMILY_solaris
33 # include "os_solaris.inline.hpp"
34 #endif
35 #ifdef TARGET_OS_FAMILY_windows
36 # include "os_windows.inline.hpp"
37 #endif
38 #ifdef TARGET_OS_FAMILY_bsd
39 # include "os_bsd.inline.hpp"
40 #endif
41
42
43 void elapsedTimer::add(elapsedTimer t) {
44 _counter += t._counter;
45 }
46
47 void elapsedTimer::start() {
48 if (!_active) {
49 _active = true;
50 _start_counter = os::elapsed_counter();
51 }
52 }
53
54 void elapsedTimer::stop() {
55 if (_active) {
56 _counter += os::elapsed_counter() - _start_counter;
57 _active = false;
58 }
59 }
60
61 double elapsedTimer::seconds() const {
62 double count = (double) _counter;
63 double freq = (double) os::elapsed_frequency();
64 return count/freq;
65 }
66
67 jlong elapsedTimer::milliseconds() const {
68 jlong ticks_per_ms = os::elapsed_frequency() / 1000;
69 return _counter / ticks_per_ms;
70 }
71
72 jlong elapsedTimer::active_ticks() const {
73 if (!_active) {
74 return ticks();
75 }
76 jlong counter = _counter + os::elapsed_counter() - _start_counter;
77 return counter;
78 }
79
80 void TimeStamp::update_to(jlong ticks) {
81 _counter = ticks;
82 if (_counter == 0) _counter = 1;
83 assert(is_updated(), "must not look clear");
84 }
85
86 void TimeStamp::update() {
87 update_to(os::elapsed_counter());
88 }
89
90 double TimeStamp::seconds() const {
91 assert(is_updated(), "must not be clear");
92 jlong new_count = os::elapsed_counter();
93 double count = (double) new_count - _counter;
94 double freq = (double) os::elapsed_frequency();
95 return count/freq;
96 }
97
98 jlong TimeStamp::milliseconds() const {
99 assert(is_updated(), "must not be clear");
100
101 jlong new_count = os::elapsed_counter();
102 jlong count = new_count - _counter;
103 jlong ticks_per_ms = os::elapsed_frequency() / 1000;
104 return count / ticks_per_ms;
105 }
106
107 jlong TimeStamp::ticks_since_update() const {
108 assert(is_updated(), "must not be clear");
109 return os::elapsed_counter() - _counter;
110 }
111
112 TraceTime::TraceTime(const char* title,
113 bool doit,
114 bool print_cr,
115 outputStream* logfile) {
116 _active = doit;
117 _verbose = true;
118 _print_cr = print_cr;
119 _logfile = (logfile != NULL) ? logfile : tty;
120
121 if (_active) {
122 _accum = NULL;
123 _logfile->stamp(PrintGCTimeStamps);
124 _logfile->print("[%s", title);
125 _logfile->flush();
126 _t.start();
127 }
128 }
129
130 TraceTime::TraceTime(const char* title,
131 elapsedTimer* accumulator,
132 bool doit,
133 bool verbose,
134 outputStream* logfile) {
135 _active = doit;
136 _verbose = verbose;
137 _print_cr = true;
138 _logfile = (logfile != NULL) ? logfile : tty;
139 if (_active) {
140 if (_verbose) {
141 _logfile->stamp(PrintGCTimeStamps);
142 _logfile->print("[%s", title);
143 _logfile->flush();
144 }
145 _accum = accumulator;
146 _t.start();
147 }
148 }
149
150 TraceTime::~TraceTime() {
151 if (_active) {
152 _t.stop();
153 if (_accum!=NULL) _accum->add(_t);
154 if (_verbose) {
155 if (_print_cr) {
156 _logfile->print_cr(", %3.7f secs]", _t.seconds());
157 } else {
158 _logfile->print(", %3.7f secs]", _t.seconds());
159 }
160 _logfile->flush();
161 }
162 }
163 }
164
165 TraceCPUTime::TraceCPUTime(bool doit,
166 bool print_cr,
167 outputStream *logfile) :
168 _active(doit),
169 _print_cr(print_cr),
170 _starting_user_time(0.0),
171 _starting_system_time(0.0),
172 _starting_real_time(0.0),
173 _logfile(logfile),
174 _error(false) {
175 if (_active) {
176 if (logfile != NULL) {
177 _logfile = logfile;
178 } else {
179 _logfile = tty;
180 }
181
182 _error = !os::getTimesSecs(&_starting_real_time,
183 &_starting_user_time,
184 &_starting_system_time);
185 }
186 }
187
188 TraceCPUTime::~TraceCPUTime() {
189 if (_active) {
190 bool valid = false;
191 if (!_error) {
192 double real_secs; // walk clock time
193 double system_secs; // system time
194 double user_secs; // user time for all threads
195
196 double real_time, user_time, system_time;
197 valid = os::getTimesSecs(&real_time, &user_time, &system_time);
198 if (valid) {
199
200 user_secs = user_time - _starting_user_time;
201 system_secs = system_time - _starting_system_time;
202 real_secs = real_time - _starting_real_time;
203
204 _logfile->print(" [Times: user=%3.2f sys=%3.2f, real=%3.2f secs] ",
205 user_secs, system_secs, real_secs);
206
207 } else {
208 _logfile->print("[Invalid result in TraceCPUTime]");
209 }
210 } else {
211 _logfile->print("[Error in TraceCPUTime]");
212 }
213 if (_print_cr) {
214 _logfile->print_cr("");
215 }
216 }
217 }