1 /*
2 * Copyright (c) 1997, 2013, 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 #ifndef SHARE_VM_RUNTIME_TIMER_HPP
26 #define SHARE_VM_RUNTIME_TIMER_HPP
27
28 #include "utilities/globalDefinitions.hpp"
29
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 elapsedTimer(jlong time, jlong timeUnitsPerSecond);
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; }
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:
89 // Constructors
90 TraceTime(const char* title,
91 bool doit = true);
92 TraceTime(const char* title,
93 elapsedTimer* accumulator,
94 bool doit = true,
95 bool verbose = false);
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
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1 /*
2 * Copyright (c) 1997, 2016, 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 #ifndef SHARE_VM_RUNTIME_TIMER_HPP
26 #define SHARE_VM_RUNTIME_TIMER_HPP
27
28 #include "logging/logTag.hpp"
29 #include "utilities/globalDefinitions.hpp"
30
31 class outpuStream;
32
33 // Timers for simple measurement.
34
35 class elapsedTimer VALUE_OBJ_CLASS_SPEC {
36 friend class VMStructs;
37 private:
38 jlong _counter;
39 jlong _start_counter;
40 bool _active;
41 public:
42 elapsedTimer() { _active = false; reset(); }
43 elapsedTimer(jlong time, jlong timeUnitsPerSecond);
44 void add(elapsedTimer t);
45 void start();
46 void stop();
47 void reset() { _counter = 0; }
48 double seconds() const;
49 jlong milliseconds() const;
50 jlong ticks() const { return _counter; }
51 jlong active_ticks() const;
52 bool is_active() const { return _active; }
71 jlong milliseconds() const;
72 // ticks elapsed between VM start and last update
73 jlong ticks() const { return _counter; }
74 // ticks elapsed since last update
75 jlong ticks_since_update() const;
76 };
77
78 // TraceTime is used for tracing the execution time of a block
79 // Usage:
80 // { TraceTime t("block time")
81 // some_code();
82 // }
83 //
84
85 class TraceTime: public StackObj {
86 private:
87 bool _active; // do timing
88 bool _verbose; // report every timing
89 elapsedTimer _t; // timer
90 elapsedTimer* _accum; // accumulator
91 const char* _title; // name of timer
92 LogTagType _tag; // stream to print to
93
94 public:
95 // Constructors
96 TraceTime(const char* title,
97 bool doit = true,
98 LogTagType tag = LogTag::__NO_TAG);
99 TraceTime(const char* title,
100 elapsedTimer* accumulator,
101 bool doit = true,
102 bool verbose = false,
103 LogTagType tag = LogTag::__NO_TAG);
104 ~TraceTime();
105
106 // Accessors
107 void set_verbose(bool verbose) { _verbose = verbose; }
108 bool verbose() const { return _verbose; }
109
110 // Activation
111 void suspend() { if (_active) _t.stop(); }
112 void resume() { if (_active) _t.start(); }
113 };
114
115 class TraceCPUTime: public StackObj {
116 private:
117 bool _active; // true if times will be measured and printed
118 bool _print_cr; // if true print carriage return at end
119 double _starting_user_time; // user time at start of measurement
120 double _starting_system_time; // system time at start of measurement
121 double _starting_real_time; // real time at start of measurement
122 outputStream* _logfile; // output is printed to this stream
123 bool _error; // true if an error occurred, turns off output
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