| 1 | package org.eclipse.linuxxtools.lttng.tests.headless; |
| 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 | |
| 14 | import org.eclipse.linuxtools.lttng.event.LttngEvent; |
| 15 | import org.eclipse.linuxtools.lttng.event.LttngLocation; |
| 16 | import org.eclipse.linuxtools.lttng.event.LttngTimestamp; |
| 17 | import org.eclipse.linuxtools.lttng.trace.LTTngTextTrace; |
| 18 | import org.eclipse.linuxtools.lttng.trace.LTTngTrace; |
| 19 | import org.eclipse.linuxtools.tmf.trace.TmfContext; |
| 20 | import org.eclipse.linuxtools.tmf.trace.TmfTrace; |
| 21 | |
| 22 | |
| 23 | @SuppressWarnings("nls") |
| 24 | public class LttngTraceTest { |
| 25 | |
| 26 | /** |
| 27 | * @param args |
| 28 | */ |
| 29 | public static void main(String[] args) { |
| 30 | |
| 31 | // Path of the trace |
| 32 | final String TRACE_PATH = "/home/francois/Desktop/Workspaces/LTTngTraces/trace_2GB"; |
| 33 | |
| 34 | // *** Change to true to use the "fake" LttngTextTrace instead of LTTngTrace |
| 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" |
| 37 | final boolean USE_TEXT_TRACE = false; |
| 38 | |
| 39 | // *** Change this to run several time over the same trace |
| 40 | final int NB_OF_PASS = 1; |
| 41 | |
| 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; |
| 45 | |
| 46 | |
| 47 | // Work variables |
| 48 | TmfTrace<LttngEvent> tmptrace = null; |
| 49 | LttngEvent tmpevent = null; |
| 50 | TmfContext tmpContext = null; |
| 51 | Long nbEvent = 0L; |
| 52 | |
| 53 | try { |
| 54 | // ** Use TextTrace (slow!) if it was asked |
| 55 | if ( USE_TEXT_TRACE ) { |
| 56 | tmptrace = new LTTngTextTrace(TRACE_PATH, true); |
| 57 | } else { |
| 58 | tmptrace = new LTTngTrace(TRACE_PATH, null, true, true); |
| 59 | } |
| 60 | |
| 61 | LttngTimestamp tmpTime = new LttngTimestamp(0L); |
| 62 | tmpContext = new TmfContext(new LttngLocation(0L), 0); |
| 63 | |
| 64 | |
| 65 | long startTime = System.nanoTime(); |
| 66 | System.out.println("Start: " + startTime); |
| 67 | for ( int nb=0; nb<NB_OF_PASS; nb++) { |
| 68 | |
| 69 | // Seek to the beginning of the trace |
| 70 | tmpContext = tmptrace.seekEvent( tmpTime ); |
| 71 | tmpevent = (LttngEvent)tmptrace.getNextEvent(tmpContext); |
| 72 | |
| 73 | while ( tmpevent != null ) { |
| 74 | tmpevent = (LttngEvent)tmptrace.getNextEvent(tmpContext); |
| 75 | |
| 76 | // Parse the events if it was asked |
| 77 | if ( (tmpevent != null) && (PARSE_EVENTS) ) { |
| 78 | tmpevent.getContent().getFields(); |
| 79 | |
| 80 | // *** Uncomment the following to print the parsed content |
| 81 | // Warning : this is VERY intensive |
| 82 | // |
| 83 | // System.out.println(tmpevent.toString()); |
| 84 | //System.out.println(testEvent.getContent().toString()); |
| 85 | } |
| 86 | |
| 87 | nbEvent++; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | System.out.println("NB events : " + nbEvent); |
| 92 | |
| 93 | long endTime = System.nanoTime(); |
| 94 | long elapsed = endTime - startTime; |
| 95 | System.out.println("End: " + endTime); |
| 96 | System.out.println("Elapsed: " + elapsed + ", Average: " + (elapsed/nbEvent) + "ns/evt"); |
| 97 | |
| 98 | } |
| 99 | catch (Exception e) { |
| 100 | e.printStackTrace(); |
| 101 | } |
| 102 | |
| 103 | } |
| 104 | |
| 105 | } |