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comparison src/share/vm/runtime/timer.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1997-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_timer.cpp.incl"
27
28
29 void elapsedTimer::add(elapsedTimer t) {
30 _counter += t._counter;
31 }
32
33 void elapsedTimer::start() {
34 if (!_active) {
35 _active = true;
36 _start_counter = os::elapsed_counter();
37 }
38 }
39
40 void elapsedTimer::stop() {
41 if (_active) {
42 _counter += os::elapsed_counter() - _start_counter;
43 _active = false;
44 }
45 }
46
47 double elapsedTimer::seconds() const {
48 double count = (double) _counter;
49 double freq = (double) os::elapsed_frequency();
50 return count/freq;
51 }
52
53 jlong elapsedTimer::milliseconds() const {
54 jlong ticks_per_ms = os::elapsed_frequency() / 1000;
55 return _counter / ticks_per_ms;
56 }
57
58 jlong elapsedTimer::active_ticks() const {
59 if (!_active) {
60 return ticks();
61 }
62 jlong counter = _counter + os::elapsed_counter() - _start_counter;
63 return counter;
64 }
65
66 void TimeStamp::update_to(jlong ticks) {
67 _counter = ticks;
68 if (_counter == 0) _counter = 1;
69 assert(is_updated(), "must not look clear");
70 }
71
72 void TimeStamp::update() {
73 update_to(os::elapsed_counter());
74 }
75
76 double TimeStamp::seconds() const {
77 assert(is_updated(), "must not be clear");
78 jlong new_count = os::elapsed_counter();
79 double count = (double) new_count - _counter;
80 double freq = (double) os::elapsed_frequency();
81 return count/freq;
82 }
83
84 jlong TimeStamp::milliseconds() const {
85 assert(is_updated(), "must not be clear");
86
87 jlong new_count = os::elapsed_counter();
88 jlong count = new_count - _counter;
89 jlong ticks_per_ms = os::elapsed_frequency() / 1000;
90 return count / ticks_per_ms;
91 }
92
93 jlong TimeStamp::ticks_since_update() const {
94 assert(is_updated(), "must not be clear");
95 return os::elapsed_counter() - _counter;
96 }
97
98 TraceTime::TraceTime(const char* title,
99 bool doit,
100 bool print_cr,
101 outputStream* logfile) {
102 _active = doit;
103 _verbose = true;
104 _print_cr = print_cr;
105 _logfile = (logfile != NULL) ? logfile : tty;
106
107 if (_active) {
108 _accum = NULL;
109 if (PrintGCTimeStamps) {
110 _logfile->stamp();
111 _logfile->print(": ");
112 }
113 _logfile->print("[%s", title);
114 _logfile->flush();
115 _t.start();
116 }
117 }
118
119 TraceTime::TraceTime(const char* title,
120 elapsedTimer* accumulator,
121 bool doit,
122 bool verbose,
123 outputStream* logfile) {
124 _active = doit;
125 _verbose = verbose;
126 _print_cr = true;
127 _logfile = (logfile != NULL) ? logfile : tty;
128 if (_active) {
129 if (_verbose) {
130 if (PrintGCTimeStamps) {
131 _logfile->stamp();
132 _logfile->print(": ");
133 }
134 _logfile->print("[%s", title);
135 _logfile->flush();
136 }
137 _accum = accumulator;
138 _t.start();
139 }
140 }
141
142 TraceTime::~TraceTime() {
143 if (_active) {
144 _t.stop();
145 if (_accum!=NULL) _accum->add(_t);
146 if (_verbose) {
147 if (_print_cr) {
148 _logfile->print_cr(", %3.7f secs]", _t.seconds());
149 } else {
150 _logfile->print(", %3.7f secs]", _t.seconds());
151 }
152 _logfile->flush();
153 }
154 }
155 }
156
157 TraceCPUTime::TraceCPUTime(bool doit,
158 bool print_cr,
159 outputStream *logfile) :
160 _active(doit),
161 _print_cr(print_cr),
162 _starting_user_time(0.0),
163 _starting_system_time(0.0),
164 _starting_real_time(0.0),
165 _logfile(logfile),
166 _error(false) {
167 if (_active) {
168 if (logfile != NULL) {
169 _logfile = logfile;
170 } else {
171 _logfile = tty;
172 }
173
174 _error = !os::getTimesSecs(&_starting_real_time,
175 &_starting_user_time,
176 &_starting_system_time);
177 }
178 }
179
180 TraceCPUTime::~TraceCPUTime() {
181 if (_active) {
182 bool valid = false;
183 if (!_error) {
184 double real_secs; // walk clock time
185 double system_secs; // system time
186 double user_secs; // user time for all threads
187
188 double real_time, user_time, system_time;
189 valid = os::getTimesSecs(&real_time, &user_time, &system_time);
190 if (valid) {
191
192 user_secs = user_time - _starting_user_time;
193 system_secs = system_time - _starting_system_time;
194 real_secs = real_time - _starting_real_time;
195
196 _logfile->print(" [Times: user=%3.2f sys=%3.2f, real=%3.2f secs] ",
197 user_secs, system_secs, real_secs);
198
199 } else {
200 _logfile->print("[Invalid result in TraceCPUTime]");
201 }
202 } else {
203 _logfile->print("[Error in TraceCPUTime]");
204 }
205 if (_print_cr) {
206 _logfile->print_cr("");
207 }
208 }
209 }