| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2012, 2013 Ericsson |
| 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.Map; |
| 19 | import java.util.Vector; |
| 20 | |
| 21 | import org.eclipse.linuxtools.ctf.core.event.EventDefinition; |
| 22 | import org.eclipse.linuxtools.ctf.core.trace.CTFReaderException; |
| 23 | import org.eclipse.linuxtools.ctf.core.trace.CTFTrace; |
| 24 | import org.eclipse.linuxtools.ctf.core.trace.CTFTraceReader; |
| 25 | import org.eclipse.linuxtools.ctf.core.trace.Stream; |
| 26 | |
| 27 | @SuppressWarnings("javadoc") |
| 28 | public class ReadTrace { |
| 29 | |
| 30 | /** |
| 31 | * @param args |
| 32 | */ |
| 33 | public static void main(String[] args) { |
| 34 | final String TRACE_PATH = "traces/kernel"; |
| 35 | |
| 36 | // Change this to enable text output |
| 37 | final boolean USE_TEXT = false; |
| 38 | |
| 39 | final int LOOP_COUNT = 1; |
| 40 | |
| 41 | // Work variables |
| 42 | Long nbEvent = 0L; |
| 43 | Vector<Double> benchs = new Vector<Double>(); |
| 44 | CTFTrace trace = null; |
| 45 | long start, stop; |
| 46 | for (int loops = 0; loops < LOOP_COUNT; loops++) { |
| 47 | try { |
| 48 | nbEvent = 0L; |
| 49 | trace = new CTFTrace(TRACE_PATH); |
| 50 | } catch (CTFReaderException e) { |
| 51 | // do nothing |
| 52 | } |
| 53 | @SuppressWarnings("unused") |
| 54 | long prev = -1; |
| 55 | start = System.nanoTime(); |
| 56 | if (USE_TEXT) { |
| 57 | System.out.println("Event, " + " Time, " + " type, " + " CPU "); |
| 58 | } |
| 59 | if (trace != null) { |
| 60 | CTFTraceReader traceReader = new CTFTraceReader(trace); |
| 61 | |
| 62 | start = System.nanoTime(); |
| 63 | |
| 64 | while (traceReader.hasMoreEvents()) { |
| 65 | EventDefinition ed = traceReader.getCurrentEventDef(); |
| 66 | nbEvent++; |
| 67 | if (USE_TEXT) { |
| 68 | String output = formatDate(ed.getTimestamp() |
| 69 | + trace.getOffset()); |
| 70 | System.out.println(nbEvent + ", " |
| 71 | + output + ", " + ed.getDeclaration().getName() |
| 72 | + ", " + ed.getCPU() + ed.getFields().toString()) ; |
| 73 | } |
| 74 | @SuppressWarnings("unused") |
| 75 | long endTime = traceReader.getEndTime(); |
| 76 | @SuppressWarnings("unused") |
| 77 | long timestamp = traceReader.getCurrentEventDef().getTimestamp(); |
| 78 | traceReader.advance(); |
| 79 | } |
| 80 | @SuppressWarnings("unused") |
| 81 | Map<Long, Stream> streams = traceReader.getTrace().getStreams(); |
| 82 | } |
| 83 | stop = System.nanoTime(); |
| 84 | |
| 85 | System.out.print('.'); |
| 86 | double time = (stop - start) / (double) nbEvent; |
| 87 | benchs.add(time); |
| 88 | } |
| 89 | System.out.println(""); |
| 90 | double avg = 0; |
| 91 | for (Double val : benchs) { |
| 92 | avg += val; |
| 93 | } |
| 94 | avg /= benchs.size(); |
| 95 | System.out.println("Time to read " + nbEvent + " events = " + avg |
| 96 | + " ns/event"); |
| 97 | for (Double val : benchs) { |
| 98 | System.out.print(val); |
| 99 | System.out.print(", "); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * @param timestamp |
| 105 | * the timestamp in UTC to convert to nanoseconds. |
| 106 | * @return formatted string. |
| 107 | */ |
| 108 | private static String formatDate(long timestamp) { |
| 109 | Date d = new Date(timestamp / 1000000); |
| 110 | DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss."); |
| 111 | String output = df.format(d) + (timestamp % 1000000000); |
| 112 | return output; |
| 113 | } |
| 114 | } |