projects / deliverable / tracecompass.git / blame
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|---|---|---|
| 6e512b93 ASL |
1 | /******************************************************************************* |
| 2 | * Copyright (c) 2009 Ericsson | |
| 3 | * | |
| 4 | * All rights reserved. This program and the accompanying materials are made | |
| 5 | * 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: Alvaro Sanchez-Leon - Initial implementation | |
| 10 | *******************************************************************************/ | |
| 11 | package org.eclipse.linuxtools.lttng.ui.views.common; | |
| 12 | ||
| 6c13869b FC |
13 | import org.eclipse.linuxtools.lttng.core.state.evProcessor.ILttngEventProcessor; |
| 14 | import org.eclipse.linuxtools.lttng.core.state.evProcessor.state.AbsStateProcessing; | |
| 15 | import org.eclipse.linuxtools.lttng.core.state.model.LttngTraceState; | |
| 16 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; | |
| 6e512b93 | 17 | |
| 63eecb47 | 18 | public abstract class AbsTRangeUpdate extends AbsStateProcessing implements |
| 8827c197 | 19 | ILttngEventProcessor { |
| 6e512b93 ASL |
20 | |
| 21 | private static final long MINORBITS = 20; | |
| 22 | ||
| 23 | // ======================================================================== | |
| 24 | // General methods | |
| 25 | // ======================================================================= | |
| 26 | ||
| 27 | /** | |
| 28 | * Get the mkdev node id<br> | |
| 29 | * <br> | |
| 30 | * This is an implementation of a KERNEL macro used in Lttv | |
| 31 | * | |
| 32 | */ | |
| 33 | public long getMkdevId(long major, long minor) { | |
| 34 | return (((major) << MINORBITS) | (minor)); | |
| 35 | } | |
| 36 | ||
| 37 | /** | |
| 38 | * Get the pixels per Nano second, either from active widgets or initialise | |
| 39 | * with the experiment time range values | |
| 40 | * | |
| 41 | * @param traceSt | |
| 42 | * @param params | |
| 43 | * | |
| 44 | * @return double | |
| 45 | */ | |
| 46 | protected double getPixelsPerNs(LttngTraceState traceSt, ParamsUpdater params) { | |
| 47 | double pixPerNs = params.getPixelsPerNs(); | |
| 0c2a2e08 | 48 | if (pixPerNs == 0.0) { |
| 8827c197 | 49 | TmfTimeRange tsetRange = traceSt.getContext().getExperimentTimeWindow(); |
| 6e512b93 ASL |
50 | |
| 51 | long startTime = tsetRange.getStartTime().getValue(); | |
| 52 | long endTime = tsetRange.getEndTime().getValue(); | |
| 53 | long delta = endTime - startTime; | |
| 54 | ||
| 55 | if (delta > 0) { | |
| 56 | pixPerNs = (double) params.getWidth() / (double) delta; | |
| 57 | params.setPixelsPerNs(pixPerNs); | |
| 58 | } | |
| 59 | } | |
| 60 | return pixPerNs; | |
| 61 | } | |
| 62 | ||
| 63 | } |