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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.tracecompass.tmf.core.event.ITmfEvent; | |
16 | import org.eclipse.tracecompass.tmf.core.event.ITmfEventField; | |
17 | import org.lttng.scope.lttng.kernel.core.analysis.os.Attributes; | |
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 | import ca.polymtl.dorsal.libdelorean.statevalue.TmfStateValue; | |
24 | ||
25 | /** | |
26 | * Set Prio handler | |
27 | */ | |
28 | public class PiSetprioHandler extends KernelEventHandler { | |
29 | ||
30 | /** | |
31 | * Constructor | |
32 | * @param layout event layout | |
33 | */ | |
34 | public PiSetprioHandler(ILttngKernelEventLayout layout) { | |
35 | super(layout); | |
36 | } | |
37 | ||
38 | @Override | |
39 | public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException { | |
40 | ITmfEventField content = event.getContent(); | |
41 | Integer cpu = KernelEventHandlerUtils.getCpu(event); | |
42 | Integer tid = ((Long) content.getField(getLayout().fieldTid()).getValue()).intValue(); | |
43 | Integer prio = ((Long) content.getField(getLayout().fieldNewPrio()).getValue()).intValue(); | |
44 | ||
45 | String threadAttributeName = Attributes.buildThreadAttributeName(tid, cpu); | |
46 | if (threadAttributeName == null) { | |
47 | return; | |
48 | } | |
49 | ||
50 | Integer updateThreadNode = ss.getQuarkRelativeAndAdd(KernelEventHandlerUtils.getNodeThreads(ss), threadAttributeName); | |
51 | ||
52 | /* Set the current prio for the new process */ | |
53 | int quark = ss.getQuarkRelativeAndAdd(updateThreadNode, Attributes.PRIO); | |
54 | ITmfStateValue value = TmfStateValue.newValueInt(prio); | |
55 | ss.modifyAttribute(KernelEventHandlerUtils.getTimestamp(event), value, quark); | |
56 | } | |
57 | } |