Mercurial > hg > truffle
annotate src/share/vm/runtime/timer.hpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | c0b0974dd509 |
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rev | line source |
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0 | 1 /* |
10405 | 2 * Copyright (c) 1997, 2013, 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 |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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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(); } | |
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c0b0974dd509
moved notification of Graal compilation statistics from VMToCompiler to CompilerToVM
Doug Simon <doug.simon@oracle.com>
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40 elapsedTimer(jlong time, jlong timeUnitsPerSecond); |
0 | 41 void add(elapsedTimer t); |
42 void start(); | |
43 void stop(); | |
44 void reset() { _counter = 0; } | |
45 double seconds() const; | |
46 jlong milliseconds() const; | |
47 jlong ticks() const { return _counter; } | |
48 jlong active_ticks() const; | |
49 bool is_active() const { return _active; } | |
50 }; | |
51 | |
52 // TimeStamp is used for recording when an event took place. | |
53 class TimeStamp VALUE_OBJ_CLASS_SPEC { | |
54 private: | |
55 jlong _counter; | |
56 public: | |
57 TimeStamp() { _counter = 0; } | |
58 void clear() { _counter = 0; } | |
59 // has the timestamp been updated since being created or cleared? | |
60 bool is_updated() const { return _counter != 0; } | |
61 // update to current elapsed time | |
62 void update(); | |
63 // update to given elapsed time | |
64 void update_to(jlong ticks); | |
65 // returns seconds since updated | |
66 // (must not be in a cleared state: must have been previously updated) | |
67 double seconds() const; | |
68 jlong milliseconds() const; | |
69 // ticks elapsed between VM start and last update | |
70 jlong ticks() const { return _counter; } | |
71 // ticks elapsed since last update | |
72 jlong ticks_since_update() const; | |
73 }; | |
74 | |
75 // TraceTime is used for tracing the execution time of a block | |
76 // Usage: | |
77 // { TraceTime t("block time") | |
78 // some_code(); | |
79 // } | |
80 // | |
81 | |
82 class TraceTime: public StackObj { | |
83 private: | |
84 bool _active; // do timing | |
85 bool _verbose; // report every timing | |
86 elapsedTimer _t; // timer | |
87 elapsedTimer* _accum; // accumulator | |
88 public: | |
10405 | 89 // Constructors |
0 | 90 TraceTime(const char* title, |
10405 | 91 bool doit = true); |
0 | 92 TraceTime(const char* title, |
93 elapsedTimer* accumulator, | |
94 bool doit = true, | |
10405 | 95 bool verbose = false); |
0 | 96 ~TraceTime(); |
97 | |
98 // Accessors | |
99 void set_verbose(bool verbose) { _verbose = verbose; } | |
100 bool verbose() const { return _verbose; } | |
101 | |
102 // Activation | |
103 void suspend() { if (_active) _t.stop(); } | |
104 void resume() { if (_active) _t.start(); } | |
105 }; | |
106 | |
107 class TraceCPUTime: public StackObj { | |
108 private: | |
109 bool _active; // true if times will be measured and printed | |
110 bool _print_cr; // if true print carriage return at end | |
111 double _starting_user_time; // user time at start of measurement | |
112 double _starting_system_time; // system time at start of measurement | |
113 double _starting_real_time; // real time at start of measurement | |
114 outputStream* _logfile; // output is printed to this stream | |
115 bool _error; // true if an error occurred, turns off output | |
116 | |
117 public: | |
118 TraceCPUTime(bool doit = true, | |
119 bool print_cr = true, | |
120 outputStream *logfile = NULL); | |
121 ~TraceCPUTime(); | |
122 }; | |
1972 | 123 |
10405 | 124 class TimeHelper { |
125 public: | |
126 static double counter_to_seconds(jlong counter); | |
127 }; | |
128 | |
1972 | 129 #endif // SHARE_VM_RUNTIME_TIMER_HPP |