| /******************************************************************************* |
| * 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.jdt.annotation.NonNull; |
| 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.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; |
| |
| /** |
| * elv_merge_request event handler |
| * |
| * TODO: This event is part of an addons module to lttng. Update this when it is |
| * mainlined in the kernel |
| * |
| * @author Houssem Daoud |
| */ |
| public class MergeRequestsHandler extends KernelEventHandler { |
| |
| private final InputOutputStateProvider fStateProvider; |
| |
| /** |
| * Constructor |
| * |
| * @param layout |
| * event layout |
| * @param sp |
| * The state provider calling this handler |
| */ |
| public MergeRequestsHandler(IKernelAnalysisEventLayout layout, InputOutputStateProvider sp) { |
| super(layout); |
| fStateProvider = sp; |
| } |
| |
| @Override |
| public void handleEvent(@NonNull ITmfStateSystemBuilder ss, @NonNull ITmfEvent event) throws AttributeNotFoundException { |
| ITmfEventField content = event.getContent(); |
| long ts = event.getTimestamp().getValue(); |
| |
| int phydisk = ((Long) content.getField(getLayout().fieldBlockDeviceId()).getValue()).intValue(); |
| Long baseRequestSector = NonNullUtils.checkNotNull((Long) content.getField(getLayout().fieldBlockRqSector()).getValue()); |
| Long mergedRequestSector = NonNullUtils.checkNotNull((Long) content.getField(getLayout().fieldBlockNextRqSector()).getValue()); |
| DiskWriteModel disk = fStateProvider.getDisk(phydisk); |
| |
| Request baseRequest = disk.getWaitingRequest(baseRequestSector); |
| if (baseRequest == null) { |
| baseRequest = new Request(disk, baseRequestSector, 0); |
| } |
| Request mergedRequest = disk.getWaitingRequest(mergedRequestSector); |
| if (mergedRequest == null) { |
| mergedRequest = new Request(disk, mergedRequestSector, 0); |
| } |
| disk.mergeRequests(ts, baseRequest, mergedRequest); |
| } |
| |
| } |