| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2015 Ericsson |
| 3 | * |
| 4 | * All rights reserved. This program and the accompanying materials |
| 5 | * are made available under the terms of the Eclipse Public License v1.0 |
| 6 | * which 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.tracecompass.internal.analysis.os.linux.core.kernel.handlers; |
| 14 | |
| 15 | import org.eclipse.jdt.annotation.Nullable; |
| 16 | import org.eclipse.tracecompass.analysis.os.linux.core.kernelanalysis.StateValues; |
| 17 | import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout; |
| 18 | import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder; |
| 19 | import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException; |
| 20 | import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue; |
| 21 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| 22 | |
| 23 | /** |
| 24 | * Raise a soft irq event |
| 25 | */ |
| 26 | public class SoftIrqRaiseHandler extends KernelEventHandler { |
| 27 | |
| 28 | /** |
| 29 | * Constructor |
| 30 | * |
| 31 | * @param layout |
| 32 | * event layout |
| 33 | */ |
| 34 | public SoftIrqRaiseHandler(IKernelAnalysisEventLayout layout) { |
| 35 | super(layout); |
| 36 | } |
| 37 | |
| 38 | @Override |
| 39 | public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException { |
| 40 | Integer softIrqId = ((Long) event.getContent().getField(getLayout().fieldVec()).getValue()).intValue(); |
| 41 | Integer cpu = KernelEventHandlerUtils.getCpu(event); |
| 42 | if (cpu == null) { |
| 43 | return; |
| 44 | } |
| 45 | /* |
| 46 | * Mark this SoftIRQ as *raised* in the resource tree. |
| 47 | */ |
| 48 | int quark = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeSoftIRQs(cpu, ss), softIrqId.toString()); |
| 49 | |
| 50 | ITmfStateValue value = (isInSoftirq(ss.queryOngoingState(quark)) ? |
| 51 | StateValues.SOFT_IRQ_RAISED_RUNNING_VALUE : |
| 52 | StateValues.SOFT_IRQ_RAISED_VALUE); |
| 53 | ss.modifyAttribute(KernelEventHandlerUtils.getTimestamp(event), value, quark); |
| 54 | |
| 55 | } |
| 56 | |
| 57 | private static boolean isInSoftirq(@Nullable ITmfStateValue state) { |
| 58 | return (state != null && |
| 59 | !state.isNull() && |
| 60 | (state.unboxInt() & StateValues.CPU_STATUS_SOFTIRQ) == StateValues.CPU_STATUS_SOFTIRQ); |
| 61 | } |
| 62 | } |