| /******************************************************************************* |
| * Copyright (c) 2016 École Polytechnique de Montréal |
| * |
| * All rights reserved. This program and the accompanying materials are |
| * made available under the terms of the Eclipse Public License 2.0 which |
| * accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| *******************************************************************************/ |
| |
| package org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.handlers; |
| |
| import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout; |
| import org.eclipse.tracecompass.common.core.NonNullUtils; |
| import org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.BlockIO; |
| import org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.DiskWriteModel; |
| import org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.InputOutputStateProvider; |
| import org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.Request; |
| import org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.handlers.KernelEventHandler; |
| import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder; |
| import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEventField; |
| |
| /** |
| * IO Request merge event handler |
| * |
| * @author Houssem Daoud |
| */ |
| public class BlockFrontMergeHandler extends KernelEventHandler { |
| |
| private final InputOutputStateProvider fStateProvider; |
| |
| /** |
| * Constructor |
| * |
| * @param layout |
| * event layout |
| * @param sp |
| * The state provider calling this handler |
| */ |
| public BlockFrontMergeHandler(IKernelAnalysisEventLayout layout, InputOutputStateProvider sp) { |
| super(layout); |
| fStateProvider = sp; |
| } |
| |
| @Override |
| public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException { |
| ITmfEventField content = event.getContent(); |
| long ts = event.getTimestamp().getValue(); |
| |
| Long sector = NonNullUtils.checkNotNull((Long) content.getField(getLayout().fieldBlockSector()).getValue()); |
| int nrSector = ((Long) content.getField(getLayout().fieldBlockNrSector()).getValue()).intValue(); |
| Long rqSector = sector + nrSector; |
| int dev = ((Long) content.getField(getLayout().fieldBlockDeviceId()).getValue()).intValue(); |
| int rwbs = ((Long) content.getField(getLayout().fieldBlockRwbs()).getValue()).intValue(); |
| DiskWriteModel disk = fStateProvider.getDisk(dev); |
| |
| Request request = disk.getWaitingRequest(rqSector); |
| if (request == null) { |
| BlockIO bio = new BlockIO(rqSector, 1, disk, rwbs); |
| request = new Request(bio); |
| } |
| BlockIO bio = new BlockIO(sector, nrSector, disk, rwbs); |
| request.insertBio(bio); |
| |
| disk.updateWaitingRequest(ts, request); |
| } |
| |
| } |