| /******************************************************************************* |
| * Copyright (c) 2016 EfficiOS Inc., Alexandre Montplaisir |
| * |
| * 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.lttng2.ust.core.analysis.debuginfo; |
| |
| import static org.eclipse.tracecompass.common.core.NonNullUtils.nullToEmptyString; |
| |
| import java.io.File; |
| |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.tracecompass.internal.lttng2.ust.core.analysis.debuginfo.FileOffsetMapper; |
| import org.eclipse.tracecompass.tmf.core.event.ITmfEvent; |
| import org.eclipse.tracecompass.tmf.core.event.aspect.ITmfEventAspect; |
| |
| /** |
| * Aspect for the function location obtained with the UST debug info. |
| * |
| * @author Alexandre Montplaisir |
| * @since 2.0 |
| */ |
| public class UstDebugInfoFunctionAspect implements ITmfEventAspect<FunctionLocation> { |
| |
| /** Singleton instance */ |
| public static final UstDebugInfoFunctionAspect INSTANCE = new UstDebugInfoFunctionAspect(); |
| |
| private UstDebugInfoFunctionAspect() {} |
| |
| @Override |
| public String getName() { |
| return nullToEmptyString(Messages.UstDebugInfoAnalysis_FunctionAspectName); |
| } |
| |
| @Override |
| public String getHelpText() { |
| return nullToEmptyString(Messages.UstDebugInfoAnalysis_FunctionAspectHelpText); |
| } |
| |
| @Override |
| public @Nullable FunctionLocation resolve(ITmfEvent event) { |
| /* Resolve the binary callsite first. */ |
| BinaryCallsite bc = UstDebugInfoBinaryAspect.INSTANCE.resolve(event); |
| if (bc == null) { |
| return null; |
| } |
| |
| return getFunctionFromBinaryLocation(bc); |
| } |
| |
| /** |
| * Get a function location starting directly from a binary callsite, instead |
| * of from a trace event. |
| * |
| * @param bc |
| * The binary callsite, representing a binary and offset within |
| * this binary |
| * @return The corresponding function location |
| * @since 2.1 |
| */ |
| public static @Nullable FunctionLocation getFunctionFromBinaryLocation(BinaryCallsite bc) { |
| String functionName = FileOffsetMapper.getFunctionNameFromOffset( |
| new File(bc.getBinaryFilePath()), |
| bc.getBuildId(), |
| bc.getOffset()); |
| if (functionName == null) { |
| return null; |
| } |
| |
| /* We do not track the offset inside the function at this time */ |
| return new FunctionLocation(functionName, null); |
| } |
| |
| } |