Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/timer.cpp @ 7168:73e64867adb7
8003690: Example code in JVMTI GetStackTrace documentation is broken
Summary: Fixed to minor errors in example code
Reviewed-by: sspitsyn, dholmes
author | mikael |
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date | Wed, 21 Nov 2012 09:02:13 -0800 |
parents | b9a9ed0f8eeb |
children | 0f80645e9c26 |
rev | line source |
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0 | 1 /* |
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7197424: update copyright year to match last edit in jdk8 hotspot repository
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
3960 | 38 #ifdef TARGET_OS_FAMILY_bsd |
39 # include "os_bsd.inline.hpp" | |
40 #endif | |
0 | 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; | |
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123 _logfile->stamp(PrintGCTimeStamps); |
0 | 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) { | |
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141 _logfile->stamp(PrintGCTimeStamps); |
0 | 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 } |