| 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.lttng.scope.lttng.kernel.core.analysis.os.Attributes; |
| 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 | import ca.polymtl.dorsal.libdelorean.statevalue.TmfStateValue; |
| 24 | |
| 25 | /** |
| 26 | * System call entry handler |
| 27 | */ |
| 28 | public class SysEntryHandler extends KernelEventHandler { |
| 29 | |
| 30 | /** |
| 31 | * Constructor |
| 32 | * |
| 33 | * @param layout |
| 34 | * event layout |
| 35 | */ |
| 36 | public SysEntryHandler(ILttngKernelEventLayout layout) { |
| 37 | super(layout); |
| 38 | } |
| 39 | |
| 40 | @Override |
| 41 | public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException { |
| 42 | Integer cpu = KernelEventHandlerUtils.getCpu(event); |
| 43 | if (cpu == null) { |
| 44 | return; |
| 45 | } |
| 46 | /* Assign the new system call to the process */ |
| 47 | int currentThreadNode = KernelEventHandlerUtils.getCurrentThreadNode(cpu, ss); |
| 48 | int quark = ss.getQuarkRelativeAndAdd(currentThreadNode, Attributes.SYSTEM_CALL); |
| 49 | ITmfStateValue value = TmfStateValue.newValueString(event.getName()); |
| 50 | long timestamp = KernelEventHandlerUtils.getTimestamp(event); |
| 51 | ss.modifyAttribute(timestamp, value, quark); |
| 52 | |
| 53 | /* Put the process in system call mode */ |
| 54 | value = StateValues.PROCESS_STATUS_RUN_SYSCALL_VALUE; |
| 55 | ss.modifyAttribute(timestamp, value, currentThreadNode); |
| 56 | |
| 57 | /* Put the CPU in system call (kernel) mode */ |
| 58 | int currentCPUNode = KernelEventHandlerUtils.getCurrentCPUNode(cpu, ss); |
| 59 | value = StateValues.CPU_STATUS_RUN_SYSCALL_VALUE; |
| 60 | ss.modifyAttribute(timestamp, value, currentCPUNode); |
| 61 | } |
| 62 | |
| 63 | } |