| 1 | /* |
| 2 | * Copyright (C) 2017 EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com> |
| 3 | * |
| 4 | * All rights reserved. This program and the accompanying materials are |
| 5 | * made available under the terms of the Eclipse Public License v1.0 which |
| 6 | * accompanies this distribution, and is available at |
| 7 | * http://www.eclipse.org/legal/epl-v10.html |
| 8 | */ |
| 9 | |
| 10 | package org.lttng.scope.lttng.kernel.core.views.timegraph.resources; |
| 11 | |
| 12 | import static java.util.Objects.requireNonNull; |
| 13 | |
| 14 | import java.util.Collections; |
| 15 | import java.util.Comparator; |
| 16 | import java.util.LinkedList; |
| 17 | import java.util.List; |
| 18 | import java.util.Objects; |
| 19 | import java.util.function.Function; |
| 20 | import java.util.stream.Collectors; |
| 21 | |
| 22 | import org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.Attributes; |
| 23 | import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem; |
| 24 | import org.lttng.scope.lttng.kernel.core.views.timegraph.resources.elements.ResourcesCpuTreeElement; |
| 25 | import org.lttng.scope.lttng.kernel.core.views.timegraph.resources.elements.ResourcesIrqTreeElement; |
| 26 | import org.lttng.scope.lttng.kernel.core.views.timegraph.resources.elements.ResourcesIrqTreeElement.IrqType; |
| 27 | import org.lttng.scope.tmf2.views.core.timegraph.model.render.tree.TimeGraphTreeElement; |
| 28 | import org.lttng.scope.tmf2.views.core.timegraph.model.render.tree.TimeGraphTreeRender; |
| 29 | |
| 30 | import com.google.common.annotations.VisibleForTesting; |
| 31 | import com.google.common.primitives.Ints; |
| 32 | |
| 33 | /** |
| 34 | * View model for a Resources view, showing CPUs as the first level, then |
| 35 | * per-cpu IRQs as the second level. |
| 36 | * |
| 37 | * @author Alexandre Montplaisir |
| 38 | */ |
| 39 | public class ResourcesCpuIrqModelProvider extends ResourcesBaseModelProvider { |
| 40 | |
| 41 | /** |
| 42 | * Each "CPU" attribute has the following children: |
| 43 | * |
| 44 | * <ul> |
| 45 | * <li>Current_thread</li> |
| 46 | * <li>Soft_IRQs</li> |
| 47 | * <li>IRQs</li> |
| 48 | * </ul> |
| 49 | */ |
| 50 | private static final String[] CPUS_QUARK_PATTERN = { Attributes.CPUS, "*" }; //$NON-NLS-1$ |
| 51 | |
| 52 | /** |
| 53 | * Get the tree element name for every cpu. |
| 54 | */ |
| 55 | @VisibleForTesting |
| 56 | public static final Function<TreeRenderContext, TimeGraphTreeRender> SS_TO_TREE_RENDER_FUNCTION = (treeContext) -> { |
| 57 | ITmfStateSystem ss = treeContext.ss; |
| 58 | |
| 59 | List<TimeGraphTreeElement> treeElems = ss.getQuarks(CPUS_QUARK_PATTERN).stream() |
| 60 | .map(cpuQuark -> { |
| 61 | String cpuStr = ss.getAttributeName(cpuQuark); |
| 62 | Integer cpu = Ints.tryParse(cpuStr); |
| 63 | if (cpu == null) { |
| 64 | return null; |
| 65 | } |
| 66 | |
| 67 | List<ResourcesIrqTreeElement> children = new LinkedList<>(); |
| 68 | |
| 69 | /* Add the "IRQ" children. */ |
| 70 | int irqsQuark = ss.optQuarkRelative(cpuQuark, Attributes.IRQS); |
| 71 | for (int irqQuark : ss.getSubAttributes(irqsQuark, false)) { |
| 72 | int irqNumber = Ints.tryParse(ss.getAttributeName(irqQuark)); |
| 73 | children.add(new ResourcesIrqTreeElement(IrqType.IRQ, irqNumber, irqQuark)); |
| 74 | } |
| 75 | |
| 76 | /* Add the "SoftIRQ" children. */ |
| 77 | int softIrqsQuark = ss.optQuarkRelative(cpuQuark, Attributes.SOFT_IRQS); |
| 78 | for (int softIrqQuark : ss.getSubAttributes(softIrqsQuark, false)) { |
| 79 | int irqNumber = Ints.tryParse(ss.getAttributeName(softIrqQuark)); |
| 80 | children.add(new ResourcesIrqTreeElement(IrqType.SOFTIRQ, irqNumber, softIrqQuark)); |
| 81 | } |
| 82 | |
| 83 | Collections.sort(children, IRQ_SORTER); |
| 84 | /* Generic types are not covariant :/ Use a raw type instead... */ |
| 85 | @SuppressWarnings("rawtypes") |
| 86 | List children2 = children; |
| 87 | return new ResourcesCpuTreeElement(cpu, children2, cpuQuark); |
| 88 | }) |
| 89 | .filter(Objects::nonNull) |
| 90 | /* |
| 91 | * Sort entries according to their CPU number (not just an |
| 92 | * alphabetical sort!) |
| 93 | */ |
| 94 | .sorted(Comparator.comparingInt(ResourcesCpuTreeElement::getCpu)) |
| 95 | .collect(Collectors.toList()); |
| 96 | |
| 97 | TimeGraphTreeElement rootElement = new TimeGraphTreeElement(treeContext.traceName, treeElems); |
| 98 | return new TimeGraphTreeRender(rootElement); |
| 99 | }; |
| 100 | |
| 101 | /** |
| 102 | * Constructor |
| 103 | */ |
| 104 | public ResourcesCpuIrqModelProvider() { |
| 105 | super(requireNonNull(Messages.resourcesCpuIrqProviderName), SS_TO_TREE_RENDER_FUNCTION); |
| 106 | } |
| 107 | |
| 108 | } |