projects / deliverable / tracecompass.git / blame
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|---|---|---|
| ff71e543 MK |
1 | /******************************************************************************* |
| 2 | * Copyright (c) 2014 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.btf.core.trace; | |
| 14 | ||
| 15 | import org.eclipse.linuxtools.tmf.core.timestamp.ITmfTimestamp; | |
| 16 | import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp; | |
| 17 | ||
| 18 | /** | |
| 19 | * Timstamp format of BTF timescale as per v2.1 of the spec | |
| 20 | * | |
| 21 | * @author Matthew Khouzam | |
| 22 | */ | |
| 23 | public enum BtfTimstampFormat { | |
| 24 | /** | |
| 25 | * Picoseconds | |
| 26 | */ | |
| 27 | PS("ps", -12, 0.001), //$NON-NLS-1$ | |
| 28 | /** | |
| 29 | * Nanoseconds | |
| 30 | */ | |
| 31 | NS("ns", -9, 1.0), //$NON-NLS-1$ | |
| 32 | /** | |
| 33 | * Microseconds | |
| 34 | */ | |
| 35 | US("us", -6, 1000.0), //$NON-NLS-1$ | |
| 36 | /** | |
| 37 | * Milliseconds | |
| 38 | */ | |
| 39 | MS("ms", -3, 1000000.0), //$NON-NLS-1$ | |
| 40 | /** | |
| 41 | * Seconds | |
| 42 | */ | |
| 43 | S("s", 0, 1000000000.0); //$NON-NLS-1$ | |
| 44 | ||
| 45 | private final String fName; | |
| 46 | private final int fScale; | |
| 47 | private final double fScaleFactor; | |
| 48 | ||
| 49 | private BtfTimstampFormat(String name, int scale, double scaleFactor) { | |
| 50 | fName = name; | |
| 51 | fScale = scale; | |
| 52 | fScaleFactor = scaleFactor; | |
| 53 | } | |
| 54 | ||
| 55 | /** | |
| 56 | * Get the scaling factor | |
| 57 | * | |
| 58 | * @return the scaling factor | |
| 59 | */ | |
| 60 | public double getScaleFactor() { | |
| 61 | return fScaleFactor; | |
| 62 | } | |
| 63 | ||
| 64 | @Override | |
| 65 | public String toString() { | |
| 66 | return fName; | |
| 67 | } | |
| 68 | ||
| 69 | /** | |
| 70 | * Parse a string to get a scale | |
| 71 | * | |
| 72 | * @param text | |
| 73 | * the timestamp in text "ns", "ms" ... | |
| 74 | * @return a BtfTimestampFormat object | |
| 75 | */ | |
| 76 | public static BtfTimstampFormat parse(String text) { | |
| 77 | switch (text.toLowerCase()) { | |
| 78 | case "ps": //$NON-NLS-1$ | |
| 79 | throw new IllegalArgumentException("ps not yet supported"); //$NON-NLS-1$ | |
| 80 | case "ns": //$NON-NLS-1$ | |
| 81 | return BtfTimstampFormat.NS; | |
| 82 | case "us": //$NON-NLS-1$ | |
| 83 | return BtfTimstampFormat.US; | |
| 84 | case "ms": //$NON-NLS-1$ | |
| 85 | return BtfTimstampFormat.MS; | |
| 86 | case "s": //$NON-NLS-1$ | |
| 87 | return BtfTimstampFormat.S; | |
| 88 | default: | |
| 89 | throw new IllegalArgumentException(text + " not a valid argument, use ps, ns, us, ms, s"); //$NON-NLS-1$ | |
| 90 | } | |
| 91 | } | |
| 92 | ||
| 93 | /** | |
| 94 | * Create an ITmfTimestamp with a proper scale | |
| 95 | * | |
| 96 | * @param timestamp | |
| 97 | * timestamp without scale | |
| 98 | * @return TmfTimestamp with proper scale | |
| 99 | */ | |
| 100 | public ITmfTimestamp createTimestamp(long timestamp) { | |
| 101 | return new TmfTimestamp(timestamp, fScale); | |
| 102 | } | |
| 103 | } |