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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.lttng.scope.lttng.kernel.core.analysis.os.handlers.internal; | |
14 | ||
15 | import org.eclipse.jdt.annotation.Nullable; | |
16 | import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; | |
17 | import org.lttng.scope.lttng.kernel.core.analysis.os.StateValues; | |
18 | import org.lttng.scope.lttng.kernel.core.trace.layout.ILttngKernelEventLayout; | |
19 | ||
20 | import ca.polymtl.dorsal.libdelorean.ITmfStateSystemBuilder; | |
21 | import ca.polymtl.dorsal.libdelorean.exceptions.AttributeNotFoundException; | |
22 | import ca.polymtl.dorsal.libdelorean.statevalue.ITmfStateValue; | |
23 | ||
24 | /** | |
25 | * Raise a soft irq event | |
26 | */ | |
27 | public class SoftIrqRaiseHandler extends KernelEventHandler { | |
28 | ||
29 | /** | |
30 | * Constructor | |
31 | * | |
32 | * @param layout | |
33 | * event layout | |
34 | */ | |
35 | public SoftIrqRaiseHandler(ILttngKernelEventLayout layout) { | |
36 | super(layout); | |
37 | } | |
38 | ||
39 | @Override | |
40 | public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException { | |
41 | Integer softIrqId = ((Long) event.getContent().getField(getLayout().fieldVec()).getValue()).intValue(); | |
42 | Integer cpu = KernelEventHandlerUtils.getCpu(event); | |
43 | if (cpu == null) { | |
44 | return; | |
45 | } | |
46 | /* | |
47 | * Mark this SoftIRQ as *raised* in the resource tree. | |
48 | */ | |
49 | int quark = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeSoftIRQs(cpu, ss), softIrqId.toString()); | |
50 | ||
51 | ITmfStateValue value = (isInSoftirq(ss.queryOngoingState(quark)) ? | |
52 | StateValues.SOFT_IRQ_RAISED_RUNNING_VALUE : | |
53 | StateValues.SOFT_IRQ_RAISED_VALUE); | |
54 | ss.modifyAttribute(KernelEventHandlerUtils.getTimestamp(event), value, quark); | |
55 | ||
56 | } | |
57 | ||
58 | private static boolean isInSoftirq(@Nullable ITmfStateValue state) { | |
59 | return (state != null && | |
60 | !state.isNull() && | |
61 | (state.unboxInt() & StateValues.CPU_STATUS_SOFTIRQ) == StateValues.CPU_STATUS_SOFTIRQ); | |
62 | } | |
63 | } |