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ce2388e0 | 1 | /******************************************************************************* |
60ae41e1 | 2 | * Copyright (c) 2012, 2014 Ericsson |
ce2388e0 FC |
3 | * |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Matthew Khouzam - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.ctf.core.tests.headless; | |
14 | ||
15 | import java.text.DateFormat; | |
16 | import java.text.SimpleDateFormat; | |
17 | import java.util.Date; | |
18 | import java.util.Vector; | |
19 | ||
20 | import org.eclipse.linuxtools.ctf.core.event.EventDefinition; | |
21 | import org.eclipse.linuxtools.ctf.core.trace.CTFReaderException; | |
22 | import org.eclipse.linuxtools.ctf.core.trace.CTFTrace; | |
23 | import org.eclipse.linuxtools.ctf.core.trace.CTFTraceReader; | |
24 | ||
be6df2d8 | 25 | @SuppressWarnings("javadoc") |
ce2388e0 FC |
26 | public class ReadTrace { |
27 | ||
28 | /** | |
29 | * @param args | |
30 | */ | |
ce2388e0 | 31 | public static void main(String[] args) { |
aa572e22 | 32 | final String TRACE_PATH = "traces/kernel"; |
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33 | |
34 | // Change this to enable text output | |
bfe038ff | 35 | final boolean USE_TEXT = false; |
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36 | |
37 | final int LOOP_COUNT = 1; | |
38 | ||
39 | // Work variables | |
6a5251eb | 40 | long nbEvent = 0L; |
3de23137 | 41 | Vector<Double> benchs = new Vector<>(); |
ce2388e0 FC |
42 | CTFTrace trace = null; |
43 | long start, stop; | |
44 | for (int loops = 0; loops < LOOP_COUNT; loops++) { | |
45 | try { | |
46 | nbEvent = 0L; | |
47 | trace = new CTFTrace(TRACE_PATH); | |
48 | } catch (CTFReaderException e) { | |
49 | // do nothing | |
50 | } | |
ce2388e0 FC |
51 | start = System.nanoTime(); |
52 | if (USE_TEXT) { | |
53 | System.out.println("Event, " + " Time, " + " type, " + " CPU "); | |
54 | } | |
db8e8f7d AM |
55 | try { |
56 | if (trace != null) { | |
57 | CTFTraceReader traceReader = new CTFTraceReader(trace); | |
ce2388e0 | 58 | |
db8e8f7d | 59 | start = System.nanoTime(); |
ce2388e0 | 60 | |
db8e8f7d AM |
61 | while (traceReader.hasMoreEvents()) { |
62 | EventDefinition ed = traceReader.getCurrentEventDef(); | |
63 | nbEvent++; | |
64 | if (USE_TEXT) { | |
65 | String output = formatDate(ed.getTimestamp() | |
66 | + trace.getOffset()); | |
67 | System.out.println(nbEvent + ", " | |
68 | + output + ", " + ed.getDeclaration().getName() | |
69 | + ", " + ed.getCPU() + ed.getFields().toString()); | |
70 | } | |
71 | // long endTime = traceReader.getEndTime(); | |
72 | // long timestamp = | |
73 | // traceReader.getCurrentEventDef().getTimestamp(); | |
74 | traceReader.advance(); | |
ce2388e0 | 75 | } |
db8e8f7d AM |
76 | // Map<Long, Stream> streams = |
77 | // traceReader.getTrace().getStreams(); | |
ce2388e0 | 78 | } |
db8e8f7d | 79 | stop = System.nanoTime(); |
bfe038ff | 80 | |
db8e8f7d AM |
81 | System.out.print('.'); |
82 | double time = (stop - start) / (double) nbEvent; | |
83 | benchs.add(time); | |
84 | } catch (CTFReaderException e) { | |
85 | System.out.println("error"); | |
86 | } | |
ce2388e0 FC |
87 | } |
88 | System.out.println(""); | |
89 | double avg = 0; | |
90 | for (Double val : benchs) { | |
91 | avg += val; | |
92 | } | |
93 | avg /= benchs.size(); | |
94 | System.out.println("Time to read " + nbEvent + " events = " + avg | |
bfe038ff | 95 | + " ns/event"); |
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96 | for (Double val : benchs) { |
97 | System.out.print(val); | |
98 | System.out.print(", "); | |
99 | } | |
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100 | } |
101 | ||
102 | /** | |
103 | * @param timestamp | |
104 | * the timestamp in UTC to convert to nanoseconds. | |
105 | * @return formatted string. | |
106 | */ | |
107 | private static String formatDate(long timestamp) { | |
108 | Date d = new Date(timestamp / 1000000); | |
4a9c1f07 | 109 | DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss."); |
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110 | String output = df.format(d) + (timestamp % 1000000000); |
111 | return output; | |
112 | } | |
113 | } |