| /******************************************************************************* |
| * Copyright (c) 2016 Mentor Graphics and others. |
| * |
| * 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 |
| * |
| * Contributors: |
| * Mentor Graphics - Initial API and implementation |
| * Umair Sair (Mentor Graphics) - Debugging is stuck when "command aborted" occurs on step return (bug 550165) |
| *******************************************************************************/ |
| |
| package org.eclipse.cdt.dsf.mi.service.command; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.eclipse.cdt.dsf.datamodel.DMContexts; |
| import org.eclipse.cdt.dsf.datamodel.IDMContext; |
| import org.eclipse.cdt.dsf.debug.service.IRunControl.IExecutionDMContext; |
| import org.eclipse.cdt.dsf.debug.service.command.ICommandControlService; |
| import org.eclipse.cdt.dsf.debug.service.command.ICommandResult; |
| import org.eclipse.cdt.dsf.debug.service.command.ICommandToken; |
| import org.eclipse.cdt.dsf.mi.service.command.commands.MICommand; |
| import org.eclipse.cdt.dsf.mi.service.command.events.MIErrorEvent; |
| import org.eclipse.cdt.dsf.mi.service.command.output.MIInfo; |
| import org.eclipse.cdt.dsf.mi.service.command.output.MIOutput; |
| import org.eclipse.cdt.dsf.mi.service.command.output.MIResultRecord; |
| import org.eclipse.cdt.dsf.service.DsfSession; |
| |
| /** |
| * In some cases GDB reports 'exec-*' commands failure after the '^running' event is fired. |
| * For instance, if an invalid breakpoint is set no error is reported but the consequent |
| * 'exec-continue' command fails. |
| * |
| * 36-exec-continue --thread 1 |
| * 36^running |
| * *running,thread-id="all" |
| * (gdb) |
| * &"Warning:\n" |
| * &"Cannot insert breakpoint 2.\n" |
| * &"Cannot access memory at address 0x0\n" |
| * &"\n" |
| * 36^error,msg="Command aborted." |
| * (gdb) |
| * |
| * This class handles these type of situations by firing MIErrorEvent when such an error appears. |
| * |
| * @since 5.3 |
| */ |
| public class MIAsyncErrorProcessor implements IEventProcessor { |
| |
| final private ICommandControlService fCommandControl; |
| |
| private Map<IExecutionDMContext, Integer> fRunCommands = new HashMap<>(); |
| |
| public MIAsyncErrorProcessor(ICommandControlService commandControl) { |
| super(); |
| fCommandControl = commandControl; |
| fCommandControl.addCommandListener(this); |
| fCommandControl.addEventListener(this); |
| } |
| |
| @Override |
| public void eventReceived(Object output) { |
| MIResultRecord rr = ((MIOutput) output).getMIResultRecord(); |
| // Handling the asynchronous error case, i.e. when the "<token>^running" event |
| // appears before "<token>^error, msg=<error_message>" for run control commands. |
| if (rr != null && MIResultRecord.ERROR.equals(rr.getResultClass())) { |
| handleAsyncError((MIOutput) output); |
| } |
| } |
| |
| @Override |
| public void commandQueued(ICommandToken token) { |
| } |
| |
| @Override |
| public void commandSent(ICommandToken token) { |
| } |
| |
| @Override |
| public void commandRemoved(ICommandToken token) { |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public void commandDone(ICommandToken token, ICommandResult result) { |
| if (token.getCommand() instanceof MICommand<?> && result instanceof MIInfo && ((MIInfo) result).isRunning()) { |
| IDMContext ctx = ((MICommand<MIInfo>) token.getCommand()).getContext(); |
| IExecutionDMContext execDMCtx = DMContexts.getAncestorOfType(ctx, IExecutionDMContext.class); |
| if (execDMCtx != null) { |
| MIResultRecord rr = ((MIInfo) result).getMIOutput().getMIResultRecord(); |
| if (rr != null) { |
| fRunCommands.put(execDMCtx, Integer.valueOf(rr.getToken())); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void dispose() { |
| fCommandControl.removeCommandListener(this); |
| fCommandControl.removeEventListener(this); |
| fRunCommands.clear(); |
| } |
| |
| protected ICommandControlService getCommandControl() { |
| return fCommandControl; |
| } |
| |
| protected void handleAsyncError(MIOutput output) { |
| int token = output.getMIResultRecord().getToken(); |
| for (Entry<IExecutionDMContext, Integer> entry : fRunCommands.entrySet()) { |
| if (entry.getValue().intValue() == token && DsfSession.isSessionActive(entry.getKey().getSessionId())) { |
| fireStoppedEvent(output, entry.getKey()); |
| } |
| } |
| } |
| |
| protected void fireStoppedEvent(final MIOutput output, final IExecutionDMContext ctx) { |
| DsfSession session = DsfSession.getSession(ctx.getSessionId()); |
| int token = output.getMIResultRecord().getToken(); |
| session.dispatchEvent( |
| MIErrorEvent.parse(ctx, token, output.getMIResultRecord().getMIResults(), output.getMIOOBRecords()), |
| null); |
| } |
| } |