| /******************************************************************************* |
| * Copyright (c) 2015 École Polytechnique de Montréal |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| *******************************************************************************/ |
| |
| package org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.handlers; |
| |
| import static org.eclipse.tracecompass.common.core.NonNullUtils.checkNotNull; |
| |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.tracecompass.analysis.os.linux.core.event.aspect.LinuxTidAspect; |
| import org.eclipse.tracecompass.analysis.os.linux.core.inputoutput.Attributes; |
| import org.eclipse.tracecompass.analysis.os.linux.core.trace.IKernelAnalysisEventLayout; |
| import org.eclipse.tracecompass.internal.analysis.os.linux.core.inputoutput.InputOutputStateProvider; |
| import org.eclipse.tracecompass.internal.analysis.os.linux.core.kernel.handlers.KernelEventHandler; |
| import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem; |
| import org.eclipse.tracecompass.statesystem.core.ITmfStateSystemBuilder; |
| import org.eclipse.tracecompass.statesystem.core.StateSystemBuilderUtils; |
| import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEventField; |
| import org.eclipse.tracecompass.tmf.core.trace.TmfTraceUtils; |
| |
| /** |
| * System call exit handler |
| * |
| * @author Houssem Daoud |
| */ |
| public class SysExitHandler extends KernelEventHandler { |
| |
| private static final String SYSCALL_READ_PATTERN = "[p]?read.*"; //$NON-NLS-1$ |
| private static final String SYSCALL_WRITE_PATTERN = "[p]?write.*"; //$NON-NLS-1$ |
| |
| private final Pattern fSyscallReadPattern; |
| private final Pattern fSyscallWritePattern; |
| |
| /** |
| * Constructor |
| * |
| * @param layout |
| * event layout |
| */ |
| public SysExitHandler(IKernelAnalysisEventLayout layout) { |
| super(layout); |
| fSyscallReadPattern = checkNotNull(Pattern.compile('(' + layout.eventSyscallEntryPrefix() + '|' + layout.eventCompatSyscallEntryPrefix() + ')' + SYSCALL_READ_PATTERN)); |
| fSyscallWritePattern = checkNotNull(Pattern.compile('(' + layout.eventSyscallEntryPrefix() + '|' + layout.eventCompatSyscallEntryPrefix() + ')' + SYSCALL_WRITE_PATTERN)); |
| } |
| |
| @Override |
| public void handleEvent(ITmfStateSystemBuilder ss, ITmfEvent event) throws AttributeNotFoundException { |
| ITmfEventField content = event.getContent(); |
| long ts = event.getTimestamp().getValue(); |
| |
| Integer tid = TmfTraceUtils.resolveIntEventAspectOfClassForEvent(event.getTrace(), LinuxTidAspect.class, event); |
| if (tid == null) { |
| return; |
| } |
| |
| /* TODO: Why save the syscall before if we have it in the sys_exit? */ |
| int syscallQuark = ss.optQuarkRelative(InputOutputStateProvider.getNodeSyscalls(ss), String.valueOf(tid)); |
| if (syscallQuark == ITmfStateSystem.INVALID_ATTRIBUTE) { |
| return; |
| } |
| String syscallValue = ss.queryOngoingState(syscallQuark).unboxStr(); |
| Long retValue = content.getFieldValue(Long.class, getLayout().fieldSyscallRet()); |
| if (retValue != null) { |
| int ret = retValue.intValue(); |
| if (ret >= 0) { |
| if (fSyscallReadPattern.matcher(syscallValue).matches()) { |
| int currentProcessNode = ss.getQuarkRelativeAndAdd(InputOutputStateProvider.getNodeThreads(ss), String.valueOf(tid)); |
| int readQuark = ss.getQuarkRelativeAndAdd(currentProcessNode, Attributes.BYTES_READ); |
| ss.getQuarkRelativeAndAdd(currentProcessNode, Attributes.BYTES_WRITTEN); |
| StateSystemBuilderUtils.incrementAttributeInt(ss, ts, readQuark, ret); |
| } else if (fSyscallWritePattern.matcher(syscallValue).matches()) { |
| int currentProcessNode = ss.getQuarkRelativeAndAdd(InputOutputStateProvider.getNodeThreads(ss), String.valueOf(tid)); |
| ss.getQuarkRelativeAndAdd(currentProcessNode, Attributes.BYTES_READ); |
| int writtenQuark = ss.getQuarkRelativeAndAdd(currentProcessNode, Attributes.BYTES_WRITTEN); |
| StateSystemBuilderUtils.incrementAttributeInt(ss, ts, writtenQuark, ret); |
| } |
| } |
| } |
| |
| ss.modifyAttribute(ts, (Object) null, syscallQuark); |
| } |
| |
| } |