01: /*
02: Copyright (c) 2005 - 2006, MentorGen, LLC
03: All rights reserved.
04:
05: Redistribution and use in source and binary forms, with or without
06: modification, are permitted provided that the following conditions are met:
07:
08: + Redistributions of source code must retain the above copyright notice,
09: this list of conditions and the following disclaimer.
10: + Redistributions in binary form must reproduce the above copyright notice,
11: this list of conditions and the following disclaimer in the documentation
12: and/or other materials provided with the distribution.
13: + Neither the name of MentorGen LLC nor the names of its contributors may be
14: used to endorse or promote products derived from this software without
15: specific prior written permission.
16:
17: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27: POSSIBILITY OF SUCH DAMAGE.
28: */
29: package com.mentorgen.tools.profile.runtime;
30:
31: /**
32: * This is a very simple class that is used to track call counts
33: * and the total time.
34: *
35: * @author Andrew Wilcox
36: */
37: public final class Metrics {
38: // metrics
39: //
40: private long _count = 0;
41: private long _totalTime = 0;
42:
43: Metrics() {
44: }
45:
46: public long getCount() {
47: return _count;
48: }
49:
50: public long getTotalTime() {
51: return _totalTime;
52: }
53:
54: void inc(long time) {
55: _count++;
56:
57: if (time > 0) {
58: _totalTime += time;
59: }
60: }
61:
62: void adjust(long overhead) {
63: if (overhead > 0 && 0 < (_totalTime - overhead)) {
64: _totalTime -= overhead;
65: }
66: }
67:
68: public String toString() {
69: StringBuffer b = new StringBuffer();
70: b.append("count: ");
71: b.append(_count);
72: b.append(" time: ");
73: b.append(_totalTime);
74: return b.toString();
75: }
76:
77: }
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