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6c13869b | 1 | package org.eclipse.linuxtools.lttng.core.tests.headless; |
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2 | /******************************************************************************* |
3 | * Copyright (c) 2009 Ericsson | |
4 | * | |
5 | * All rights reserved. This program and the accompanying materials are | |
6 | * made available under the terms of the Eclipse Public License v1.0 which | |
7 | * accompanies this distribution, and is available at | |
8 | * http://www.eclipse.org/legal/epl-v10.html | |
9 | * | |
10 | * Contributors: | |
11 | * William Bourque (wbourque@gmail.com) - Initial API and implementation | |
12 | *******************************************************************************/ | |
13 | ||
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14 | import org.eclipse.linuxtools.internal.lttng.core.event.LttngEvent; |
15 | import org.eclipse.linuxtools.internal.lttng.core.event.LttngLocation; | |
16 | import org.eclipse.linuxtools.internal.lttng.core.event.LttngTimestamp; | |
17 | import org.eclipse.linuxtools.internal.lttng.core.trace.LTTngTextTrace; | |
18 | import org.eclipse.linuxtools.internal.lttng.core.trace.LTTngTrace; | |
3791b5df | 19 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
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20 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; |
21 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; | |
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22 | |
23 | ||
3b38ea61 | 24 | @SuppressWarnings("nls") |
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25 | public class LttngTraceTest { |
26 | ||
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27 | /** |
28 | * @param args | |
29 | */ | |
30 | public static void main(final String[] args) { | |
31 | ||
32 | // Path of the trace | |
cb866e08 | 33 | final String TRACE_PATH = "/home/francois/Desktop/Workspaces/LTTngTraces/trace_2GB"; |
9cb4892d | 34 | // *** Change to true to use the "fake" LttngTextTrace instead of LTTngTrace |
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35 | // To use this, you need a ".txt" trace. |
36 | // You can get it using LTTv with the command "lttv -m textDump -t /tmp/sometrace > mytrace.txt" | |
9cb4892d | 37 | final boolean USE_TEXT_TRACE = false; |
25e48683 | 38 | |
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39 | // *** Change this to run several time over the same trace |
40 | final int NB_OF_PASS = 1; | |
25e48683 | 41 | |
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42 | // *** Change this to true to parse all the events in the trace |
43 | // Otherwise, events are just read | |
44 | final boolean PARSE_EVENTS = true; | |
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45 | |
46 | ||
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47 | // Work variables |
48 | TmfTrace<LttngEvent> tmptrace = null; | |
49 | LttngEvent tmpevent = null; | |
3791b5df | 50 | ITmfContext tmpContext = null; |
9cb4892d | 51 | Long nbEvent = 0L; |
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52 | |
53 | try { | |
54 | // ** Use TextTrace (slow!) if it was asked | |
55 | if ( USE_TEXT_TRACE ) | |
56 | tmptrace = new LTTngTextTrace(null, TRACE_PATH, true); | |
57 | else | |
58 | tmptrace = new LTTngTrace(null, TRACE_PATH, null, true, true); | |
59 | ||
60 | final LttngTimestamp tmpTime = new LttngTimestamp(0L); | |
9cb4892d | 61 | tmpContext = new TmfContext(new LttngLocation(0L), 0); |
cb866e08 | 62 | |
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63 | |
64 | final long startTime = System.nanoTime(); | |
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65 | System.out.println("Start: " + startTime); |
66 | for ( int nb=0; nb<NB_OF_PASS; nb++) { | |
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67 | |
68 | // Seek to the beginning of the trace | |
69 | tmpContext = tmptrace.seekEvent( tmpTime ); | |
70 | tmpevent = (LttngEvent)tmptrace.getNextEvent(tmpContext); | |
71 | ||
72 | while ( tmpevent != null ) { | |
73 | tmpevent = (LttngEvent)tmptrace.getNextEvent(tmpContext); | |
74 | ||
75 | // Parse the events if it was asked | |
76 | if ( (tmpevent != null) && (PARSE_EVENTS) ) | |
77 | tmpevent.getContent().getFields(); | |
78 | ||
79 | nbEvent++; | |
80 | } | |
81 | } | |
82 | ||
83 | System.out.println("NB events : " + nbEvent); | |
84 | ||
85 | final long endTime = System.nanoTime(); | |
86 | final long elapsed = endTime - startTime; | |
87 | System.out.println("End: " + endTime); | |
88 | System.out.println("Elapsed: " + elapsed + ", Average: " + (elapsed/nbEvent) + "ns/evt"); | |
89 | ||
90 | } | |
91 | catch (final Exception e) { | |
92 | e.printStackTrace(); | |
93 | } | |
94 | ||
95 | } | |
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96 | |
97 | } |