Mercurial > hg > truffle
annotate src/share/vm/runtime/timer.hpp @ 3202:9352a9c26095
revert outer framesate scheduling change
author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Fri, 08 Jul 2011 18:00:39 +0200 |
parents | f95d63e2154a |
children | f2110083203d |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, 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 #ifndef SHARE_VM_RUNTIME_TIMER_HPP |
26 #define SHARE_VM_RUNTIME_TIMER_HPP | |
27 | |
28 #include "utilities/globalDefinitions.hpp" | |
29 | |
0 | 30 // Timers for simple measurement. |
31 | |
32 class elapsedTimer VALUE_OBJ_CLASS_SPEC { | |
33 friend class VMStructs; | |
34 private: | |
35 jlong _counter; | |
36 jlong _start_counter; | |
37 bool _active; | |
38 public: | |
39 elapsedTimer() { _active = false; reset(); } | |
40 void add(elapsedTimer t); | |
41 void start(); | |
42 void stop(); | |
43 void reset() { _counter = 0; } | |
44 double seconds() const; | |
45 jlong milliseconds() const; | |
46 jlong ticks() const { return _counter; } | |
47 jlong active_ticks() const; | |
48 bool is_active() const { return _active; } | |
49 }; | |
50 | |
51 // TimeStamp is used for recording when an event took place. | |
52 class TimeStamp VALUE_OBJ_CLASS_SPEC { | |
53 private: | |
54 jlong _counter; | |
55 public: | |
56 TimeStamp() { _counter = 0; } | |
57 void clear() { _counter = 0; } | |
58 // has the timestamp been updated since being created or cleared? | |
59 bool is_updated() const { return _counter != 0; } | |
60 // update to current elapsed time | |
61 void update(); | |
62 // update to given elapsed time | |
63 void update_to(jlong ticks); | |
64 // returns seconds since updated | |
65 // (must not be in a cleared state: must have been previously updated) | |
66 double seconds() const; | |
67 jlong milliseconds() const; | |
68 // ticks elapsed between VM start and last update | |
69 jlong ticks() const { return _counter; } | |
70 // ticks elapsed since last update | |
71 jlong ticks_since_update() const; | |
72 }; | |
73 | |
74 // TraceTime is used for tracing the execution time of a block | |
75 // Usage: | |
76 // { TraceTime t("block time") | |
77 // some_code(); | |
78 // } | |
79 // | |
80 | |
81 class TraceTime: public StackObj { | |
82 private: | |
83 bool _active; // do timing | |
84 bool _verbose; // report every timing | |
85 bool _print_cr; // add a CR to the end of the timer report | |
86 elapsedTimer _t; // timer | |
87 elapsedTimer* _accum; // accumulator | |
88 outputStream* _logfile; // output log file | |
89 public: | |
90 // Constuctors | |
91 TraceTime(const char* title, | |
92 bool doit = true, | |
93 bool print_cr = true, | |
94 outputStream *logfile = NULL); | |
95 TraceTime(const char* title, | |
96 elapsedTimer* accumulator, | |
97 bool doit = true, | |
98 bool verbose = false, | |
99 outputStream *logfile = NULL ); | |
100 ~TraceTime(); | |
101 | |
102 // Accessors | |
103 void set_verbose(bool verbose) { _verbose = verbose; } | |
104 bool verbose() const { return _verbose; } | |
105 | |
106 // Activation | |
107 void suspend() { if (_active) _t.stop(); } | |
108 void resume() { if (_active) _t.start(); } | |
109 }; | |
110 | |
111 class TraceCPUTime: public StackObj { | |
112 private: | |
113 bool _active; // true if times will be measured and printed | |
114 bool _print_cr; // if true print carriage return at end | |
115 double _starting_user_time; // user time at start of measurement | |
116 double _starting_system_time; // system time at start of measurement | |
117 double _starting_real_time; // real time at start of measurement | |
118 outputStream* _logfile; // output is printed to this stream | |
119 bool _error; // true if an error occurred, turns off output | |
120 | |
121 public: | |
122 TraceCPUTime(bool doit = true, | |
123 bool print_cr = true, | |
124 outputStream *logfile = NULL); | |
125 ~TraceCPUTime(); | |
126 }; | |
1972 | 127 |
128 #endif // SHARE_VM_RUNTIME_TIMER_HPP |