Added a headless test

1 files changed, 108 insertions, 0 deletions

diff --git a/lttng/org.eclipse.linuxtools.tmf.core.tests/src/org/eclipse/linuxtools/tmf/core/tests/ctfadaptor/headless/Benchmark.java b/lttng/org.eclipse.linuxtools.tmf.core.tests/src/org/eclipse/linuxtools/tmf/core/tests/ctfadaptor/headless/Benchmark.java
new file mode 100644
index 0000000000..84a048fd89
--- /dev/null
+++ b/lttng/org.eclipse.linuxtools.tmf.core.tests/src/org/eclipse/linuxtools/tmf/core/tests/ctfadaptor/headless/Benchmark.java
@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * Copyright (c) 2012 Ericsson
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v1.0 which
+ * accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Matthew Khouzam - Initial API and implementation
+ *******************************************************************************/
+package org.eclipse.linuxtools.tmf.core.tests.ctfadaptor.headless;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Vector;
+
+import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfIterator;
+import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfEvent;
+import org.eclipse.linuxtools.tmf.core.ctfadaptor.CtfTmfTrace;
+
+public class Benchmark {
+
+    /**
+     * @param args
+     */
+    @SuppressWarnings("nls")
+    public static void main(String[] args) {
+        final String TRACE_PATH = "../org.eclipse.linuxtools.ctf.core.tests/Tests/traces/trace20m1";
+        final int NUM_LOOPS = 100;
+
+        // Change this to enable text output
+        final boolean USE_TEXT = false;
+
+        try {
+            System.in.read();
+        } catch (IOException e1) {
+            // TODO Auto-generated catch block
+            e1.printStackTrace();
+        }
+        // Work variables
+        Long nbEvent = 0L;
+        Vector<Double> benchs = new Vector<Double>();
+        CtfTmfTrace trace = null;
+        long start, stop;
+        for (int loops = 0; loops < NUM_LOOPS; loops++) {
+            nbEvent = 0L;
+            trace = new CtfTmfTrace();
+            try {
+                trace.initTrace("Test", TRACE_PATH, CtfTmfEvent.class, 1);
+            } catch (FileNotFoundException e) {
+                loops = NUM_LOOPS +1;
+                break;
+            }
+
+            start = System.nanoTime();
+            if (nbEvent != -1) {
+                CtfIterator traceReader = (CtfIterator) trace.seekEvent(0);
+
+                start = System.nanoTime();
+                CtfTmfEvent current = traceReader.getCurrentEvent();
+                while (current != null) {
+                    nbEvent++;
+                    if (USE_TEXT) {
+                        String output = formatDate(current.getTimestampValue());
+                        System.out.println("Event " + traceReader.getRank() + " Time "
+                                + output + " type " + current.getSource()
+                                + " on CPU " + current.getCPU());
+                    }
+                    traceReader.advance();
+                    current = traceReader.getCurrentEvent();
+                }
+            }
+            stop = System.nanoTime();
+            System.out.print('.');
+            double time = (stop - start) / (double) nbEvent;
+            benchs.add(time);
+        }
+        System.out.println("");
+        double avg = 0;
+        for (Double val : benchs) {
+            avg += val;
+        }
+        avg /= benchs.size();
+        System.out.println("Time to read = " + avg + " events/ns");
+        for (Double val : benchs) {
+            System.out.print(val);
+            System.out.print(", ");
+        }
+
+    }
+
+    /**
+     * @param timestamp
+     *            the timestamp in UTC to convert to nanoseconds.
+     * @return formatted string.
+     */
+    private static String formatDate(long timestamp) {
+        Date d = new Date(timestamp / 1000000);
+        DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss."); //$NON-NLS-1$
+        String output = df.format(d) + (timestamp % 1000000000);
+        return output;
+    }
+
+}