aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins/debugger/debuggerrunner.cpp
blob: 8be9f172463359f31ce0291f3a42b45b64a760b5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/

#include "debuggerrunner.h"
#include "debuggerruncontrolfactory.h"

#include "debuggeractions.h"
#include "debuggerinternalconstants.h"
#include "debuggercore.h"
#include "debuggerengine.h"
#include "debuggermainwindow.h"
#include "debuggerplugin.h"
#include "debuggerstringutils.h"
#include "debuggerstartparameters.h"
#include "lldb/lldbenginehost.h"
#include "debuggertooltipmanager.h"
#include "qml/qmlengine.h"

#ifdef Q_OS_WIN
#  include "peutils.h"
#  include <utils/winutils.h>
#endif

#include <projectexplorer/abi.h>
#include <projectexplorer/debugginghelper.h>
#include <projectexplorer/project.h>
#include <projectexplorer/projectexplorerconstants.h>
#include <projectexplorer/target.h>
#include <projectexplorer/buildconfiguration.h>
#include <projectexplorer/toolchain.h>
#include <projectexplorer/applicationrunconfiguration.h> // For LocalApplication*

#include <utils/outputformat.h>
#include <utils/synchronousprocess.h>
#include <utils/qtcassert.h>
#include <utils/fancymainwindow.h>
#include <utils/qtcprocess.h>
#include <coreplugin/icore.h>
#include <utils/buildablehelperlibrary.h>

#include <QtCore/QDir>
#include <QtCore/QDebug>
#include <QtGui/QMessageBox>
#include <QtGui/QErrorMessage>

using namespace ProjectExplorer;
using namespace Debugger::Internal;

enum { debug = 0 };

namespace Debugger {
namespace Internal {

bool isCdbEngineEnabled(); // Check the configuration page
bool checkCdbConfiguration(const DebuggerStartParameters &sp, ConfigurationCheck *check);
DebuggerEngine *createCdbEngine(const DebuggerStartParameters &sp,
    DebuggerEngine *masterEngine, QString *error);

bool checkGdbConfiguration(const DebuggerStartParameters &sp, ConfigurationCheck *check);
DebuggerEngine *createGdbEngine(const DebuggerStartParameters &sp,
    DebuggerEngine *masterEngine);

DebuggerEngine *createScriptEngine(const DebuggerStartParameters &sp);
DebuggerEngine *createPdbEngine(const DebuggerStartParameters &sp);
QmlEngine *createQmlEngine(const DebuggerStartParameters &sp,
    DebuggerEngine *masterEngine);
DebuggerEngine *createQmlCppEngine(const DebuggerStartParameters &sp,
                                   DebuggerEngineType slaveEngineType,
                                   QString *errorMessage);
DebuggerEngine *createLldbEngine(const DebuggerStartParameters &sp);

extern QString msgNoBinaryForToolChain(const Abi &abi);

static const char *engineTypeName(DebuggerEngineType et)
{
    switch (et) {
    case Debugger::NoEngineType:
        break;
    case Debugger::GdbEngineType:
        return "Gdb engine";
    case Debugger::ScriptEngineType:
        return "Script engine";
    case Debugger::CdbEngineType:
        return "Cdb engine";
    case Debugger::PdbEngineType:
        return "Pdb engine";
    case Debugger::QmlEngineType:
        return "QML engine";
    case Debugger::QmlCppEngineType:
        return "QML C++ engine";
    case Debugger::LldbEngineType:
        return "LLDB engine";
    case Debugger::AllEngineTypes:
        break;
    }
    return "No engine";
}

static inline QString engineTypeNames(const QList<DebuggerEngineType> &l)
{
    QString rc;
    foreach (DebuggerEngineType et, l) {
        if (!rc.isEmpty())
            rc.append(QLatin1String(", "));
        rc += QLatin1String(engineTypeName(et));
    }
    return rc;
}

static QString msgEngineNotAvailable(const char *engine)
{
    return DebuggerPlugin::tr("The application requires the debugger engine '%1', "
        "which is disabled.").arg(_(engine));
}

static inline QString msgEngineNotAvailable(DebuggerEngineType et)
{
    return msgEngineNotAvailable(engineTypeName(et));
}

////////////////////////////////////////////////////////////////////////
//
// DebuggerRunControlPrivate
//
////////////////////////////////////////////////////////////////////////

class DebuggerRunControlPrivate
{
public:
    explicit DebuggerRunControlPrivate(DebuggerRunControl *parent,
                                       RunConfiguration *runConfiguration);

    DebuggerEngineType engineForExecutable(unsigned enabledEngineTypes,
        const QString &executable);
    DebuggerEngineType engineForMode(unsigned enabledEngineTypes,
        DebuggerStartMode mode);

public:
    DebuggerRunControl *q;
    DebuggerEngine *m_engine;
    const QWeakPointer<RunConfiguration> m_myRunConfiguration;
    bool m_running;
};

DebuggerRunControlPrivate::DebuggerRunControlPrivate(DebuggerRunControl *parent,
                                                     RunConfiguration *runConfiguration)
    : q(parent)
    , m_engine(0)
    , m_myRunConfiguration(runConfiguration)
    , m_running(false)
{
}

} // namespace Internal

DebuggerRunControl::DebuggerRunControl(RunConfiguration *runConfiguration,
                                       const DebuggerStartParameters &sp,
                                       const QPair<DebuggerEngineType, DebuggerEngineType> &masterSlaveEngineTypes)
    : RunControl(runConfiguration, ProjectExplorer::DebugRunMode),
      d(new DebuggerRunControlPrivate(this, runConfiguration))
{
    connect(this, SIGNAL(finished()), SLOT(handleFinished()));
    // Create the engine. Could arguably be moved to the factory, but
    // we still have a derived S60DebugControl. Should rarely fail, though.
    QString errorMessage;
    d->m_engine = masterSlaveEngineTypes.first == QmlCppEngineType ?
            createQmlCppEngine(sp, masterSlaveEngineTypes.second, &errorMessage) :
            DebuggerRunControlFactory::createEngine(masterSlaveEngineTypes.first, sp,
                                                    0, &errorMessage);
    if (d->m_engine) {
        DebuggerToolTipManager::instance()->registerEngine(d->m_engine);
    } else {
        debuggingFinished();
        Core::ICore::showWarningWithOptions(DebuggerRunControl::tr("Debugger"), errorMessage);
    }
}

DebuggerRunControl::~DebuggerRunControl()
{
    disconnect();
    if (DebuggerEngine *engine = d->m_engine) {
        d->m_engine = 0;
        engine->disconnect();
        delete engine;
    }
    delete d;
}

const DebuggerStartParameters &DebuggerRunControl::startParameters() const
{
    QTC_ASSERT(d->m_engine, return *(new DebuggerStartParameters()));
    return d->m_engine->startParameters();
}

QString DebuggerRunControl::displayName() const
{
    QTC_ASSERT(d->m_engine, return QString());
    return d->m_engine->startParameters().displayName;
}

QIcon DebuggerRunControl::icon() const
{
    return QIcon(QLatin1String(ProjectExplorer::Constants::ICON_DEBUG_SMALL));
}

void DebuggerRunControl::setCustomEnvironment(Utils::Environment env)
{
    QTC_ASSERT(d->m_engine, return);
    d->m_engine->startParameters().environment = env;
}

void DebuggerRunControl::start()
{
    QTC_ASSERT(d->m_engine, return);
    // User canceled input dialog asking for executable when working on library project.
    if (d->m_engine->startParameters().startMode == StartInternal
        && d->m_engine->startParameters().executable.isEmpty()) {
        appendMessage(tr("No executable specified.\n"), Utils::ErrorMessageFormat);
        emit started();
        emit finished();
        return;
    }

    if (d->m_engine->startParameters().startMode == StartInternal) {
        foreach (const BreakpointModelId &id, debuggerCore()->breakHandler()->allBreakpointIds()) {
            if (d->m_engine->breakHandler()->breakpointData(id).enabled
                    && !d->m_engine->acceptsBreakpoint(id)) {

                QString warningMessage =
                        DebuggerPlugin::tr("Some breakpoints cannot be handled by the debugger "
                                           "languages currently active, and will be ignored.");

                debuggerCore()->showMessage(warningMessage, LogWarning);

                QErrorMessage *msgBox = new QErrorMessage(debuggerCore()->mainWindow());
                msgBox->setAttribute(Qt::WA_DeleteOnClose);
                msgBox->showMessage(warningMessage);
                break;
            }
        }
    }

    debuggerCore()->runControlStarted(d->m_engine);

    // We might get a synchronous startFailed() notification on Windows,
    // when launching the process fails. Emit a proper finished() sequence.
    emit started();
    d->m_running = true;

    d->m_engine->startDebugger(this);

    if (d->m_running)
        appendMessage(tr("Debugging starts\n"), Utils::NormalMessageFormat);
}

void DebuggerRunControl::startFailed()
{
    appendMessage(tr("Debugging has failed\n"), Utils::NormalMessageFormat);
    d->m_running = false;
    emit finished();
    d->m_engine->handleStartFailed();
}

void DebuggerRunControl::handleFinished()
{
    appendMessage(tr("Debugging has finished\n"), Utils::NormalMessageFormat);
    if (d->m_engine)
        d->m_engine->handleFinished();
    debuggerCore()->runControlFinished(d->m_engine);
}

void DebuggerRunControl::showMessage(const QString &msg, int channel)
{
    switch (channel) {
        case AppOutput:
            appendMessage(msg, Utils::StdOutFormatSameLine);
            break;
        case AppError:
            appendMessage(msg, Utils::StdErrFormatSameLine);
            break;
        case AppStuff:
            appendMessage(msg, Utils::DebugFormat);
            break;
    }
}

bool DebuggerRunControl::promptToStop(bool *optionalPrompt) const
{
    QTC_ASSERT(isRunning(), return true;)

    if (optionalPrompt && !*optionalPrompt)
        return true;

    const QString question = tr("A debugging session is still in progress. "
            "Terminating the session in the current"
            " state can leave the target in an inconsistent state."
            " Would you still like to terminate it?");
    return showPromptToStopDialog(tr("Close Debugging Session"), question,
                                  QString(), QString(), optionalPrompt);
}

RunControl::StopResult DebuggerRunControl::stop()
{
    QTC_ASSERT(d->m_engine, return StoppedSynchronously);
    d->m_engine->quitDebugger();
    return AsynchronousStop;
}

void DebuggerRunControl::debuggingFinished()
{
    d->m_running = false;
    emit finished();
}

bool DebuggerRunControl::isRunning() const
{
    return d->m_running;
}

DebuggerEngine *DebuggerRunControl::engine()
{
    QTC_CHECK(d->m_engine);
    return d->m_engine;
}

RunConfiguration *DebuggerRunControl::runConfiguration() const
{
    return d->m_myRunConfiguration.data();
}

////////////////////////////////////////////////////////////////////////
//
// Engine detection logic: Detection functions depending on tool chain, binary,
// etc. Return a list of possible engines (order of prefererence) without
// consideration of configuration, etc.
//
////////////////////////////////////////////////////////////////////////

static QList<DebuggerEngineType> enginesForToolChain(const Abi &toolChain)
{
    QList<DebuggerEngineType> result;
    switch (toolChain.binaryFormat()) {
    case Abi::ElfFormat:
    case Abi::MachOFormat:
        result.push_back(LldbEngineType);
        result.push_back(GdbEngineType);
        break;
   case Abi::PEFormat:
        if (toolChain.osFlavor() == Abi::WindowsMSysFlavor) {
            result.push_back(GdbEngineType);
            result.push_back(CdbEngineType);
        } else {
            result.push_back(CdbEngineType);
            result.push_back(GdbEngineType);
        }
        break;
    case Abi::RuntimeQmlFormat:
        result.push_back(QmlEngineType);
        break;
    default:
        break;
    }
    return result;
}

static inline QList<DebuggerEngineType> enginesForScriptExecutables(const QString &executable)
{
    QList<DebuggerEngineType> result;
    if (executable.endsWith(_(".js"))) {
        result.push_back(ScriptEngineType);
    } else if (executable.endsWith(_(".py"))) {
        result.push_back(PdbEngineType);
    }
    return result;
}

static QList<DebuggerEngineType> enginesForExecutable(const QString &executable)
{
    QList<DebuggerEngineType> result = enginesForScriptExecutables(executable);
    if (!result.isEmpty())
        return result;
#ifdef Q_OS_WIN
    // A remote executable?
    if (!executable.endsWith(_(".exe"), Qt::CaseInsensitive)) {
        result.push_back(GdbEngineType);
        return result;
    }

    // If a file has PDB files, it has been compiled by VS.
    QStringList pdbFiles;
    QString errorMessage;
    if (getPDBFiles(executable, &pdbFiles, &errorMessage) && !pdbFiles.isEmpty()) {
        result.push_back(CdbEngineType);
        result.push_back(GdbEngineType);
        return result;
    }
    // Fixme: Gdb should only be preferred if MinGW can positively be detected.
    result.push_back(GdbEngineType);
    result.push_back(CdbEngineType);
#else
    result.push_back(LldbEngineType);
    result.push_back(GdbEngineType);
#endif
    return result;
}

// Debugger type for mode.
static QList<DebuggerEngineType> enginesForMode(DebuggerStartMode startMode,
                                                bool hardConstraintsOnly)
{
    QList<DebuggerEngineType> result;
    switch (startMode) {
    case NoStartMode:
        break;
    case StartInternal:
    case StartExternal:
    case AttachExternal:
        if (!hardConstraintsOnly) {
#ifdef Q_OS_WIN
            result.push_back(CdbEngineType); // Preferably Windows debugger for attaching locally.
#endif
            result.push_back(GdbEngineType);
        }
        break;
    case AttachCore:
#ifdef Q_OS_WIN
        result.push_back(CdbEngineType);
#endif
        result.push_back(GdbEngineType);
        break;
    case StartRemoteProcess:
    case StartRemoteGdb:
        result.push_back(GdbEngineType);
        break;
    case AttachToRemoteProcess:
    case AttachToRemoteServer:
        if (!hardConstraintsOnly) {
#ifdef Q_OS_WIN
            result.push_back(CdbEngineType);
#endif
            result.push_back(GdbEngineType);
        }
        break;
    case AttachCrashedExternal:
        result.push_back(CdbEngineType); // Only CDB can do this
        break;
    case StartRemoteEngine:
        // FIXME: Unclear IPC override. Someone please have a better idea.
        // For now thats the only supported IPC engine.
        result.push_back(LldbEngineType);
        break;
    case AttachToQmlPort:
        result.push_back(QmlEngineType); // Only QML can do this
        break;
    }
    return result;
}

// Engine detection logic: Call all detection functions in order.

static QList<DebuggerEngineType> engineTypes(const DebuggerStartParameters &sp)
{
    // Script executables and certain start modes are 'hard constraints'.
    QList<DebuggerEngineType> result = enginesForScriptExecutables(sp.executable);
    if (!result.isEmpty())
        return result;

    result = enginesForMode(sp.startMode, true);
    if (!result.isEmpty())
        return result;

    //  'hard constraints' done (with the exception of QML ABI checked here),
    // further try to restrict available engines.
    if (sp.toolChainAbi.isValid()) {
        result = enginesForToolChain(sp.toolChainAbi);
        if (!result.isEmpty())
            return result;
    }

    // FIXME: 1 of 3 testing hacks.
    if (sp.processArgs.startsWith(__("@tcf@ "))) {
        result.push_back(GdbEngineType);
        return result;
    }

    if (sp.startMode != AttachToRemoteServer
            && sp.startMode != AttachToRemoteProcess
            && !sp.executable.isEmpty())
        result = enginesForExecutable(sp.executable);
    if (!result.isEmpty())
        return result;

    result = enginesForMode(sp.startMode, false);
    return result;
}

// Engine detection logic: ConfigurationCheck.
ConfigurationCheck::ConfigurationCheck() :
    masterSlaveEngineTypes(NoEngineType, NoEngineType)
{
}

ConfigurationCheck::operator bool() const
{
    return errorMessage.isEmpty()
        && errorDetails.isEmpty()
        && masterSlaveEngineTypes.first != NoEngineType;
}

QString ConfigurationCheck::errorDetailsString() const
{
    return errorDetails.join(QLatin1String("\n\n"));
}

// Convenience helper to check whether an engine is enabled and configured
// correctly.
static inline bool canUseEngine(DebuggerEngineType et,
                                const DebuggerStartParameters &sp,
                                unsigned cmdLineEnabledEngines,
                                ConfigurationCheck *result)
{
    // Enabled?
    if ((et & cmdLineEnabledEngines) == 0) {
        result->errorDetails.push_back(DebuggerPlugin::tr("The debugger engine '%1' is disabled.").
                                       arg(QLatin1String(engineTypeName(et))));
        return false;
    }
    // Configured.
    switch (et) {
    case CdbEngineType:
        return checkCdbConfiguration(sp, result);
    case GdbEngineType:
        return checkGdbConfiguration(sp, result);
    default:
        break;
    }
    return true;
}

/*!
    \fn Debugger::ConfigurationCheck Debugger::checkDebugConfiguration(const DebuggerStartParameters &sp)

    This is the master engine detection function that returns the
    engine types for a given set of start parameters and checks their
    configuration.
*/

DEBUGGER_EXPORT ConfigurationCheck checkDebugConfiguration(const DebuggerStartParameters &sp)
{
    ConfigurationCheck result;
    const unsigned activeLangs = debuggerCore()->activeLanguages();
    const bool qmlLanguage = activeLangs & QmlLanguage;
    const bool cppLanguage = activeLangs & CppLanguage;
    if (debug)
        qDebug().nospace() << "checkDebugConfiguration " << sp.toolChainAbi.toString()
                           << " Start mode=" << sp.startMode << " Executable=" << sp.executable
                           << " Debugger command=" << sp.debuggerCommand;
    // Get all applicable types.
    QList<DebuggerEngineType> requiredTypes;
    if (qmlLanguage && !cppLanguage) {
        requiredTypes.push_back(QmlEngineType);
    } else {
        requiredTypes = engineTypes(sp);
    }
    if (requiredTypes.isEmpty()) {
        result.errorMessage = QLatin1String("Internal error: Unable to determine debugger engine type for this configuration");
        return result;
    }
    if (debug)
        qDebug() << " Required: " << engineTypeNames(requiredTypes);
    // Filter out disables types, command line + current settings.
    unsigned cmdLineEnabledEngines = debuggerCore()->enabledEngines();
#ifdef WITH_LLDB
    if (!Core::ICore::settings()->value(QLatin1String("LLDB/enabled")).toBool())
        cmdLineEnabledEngines &= ~LldbEngineType;
#else
     cmdLineEnabledEngines &= ~LldbEngineType;
#endif
    DebuggerEngineType usableType = NoEngineType;
    QList<DebuggerEngineType> unavailableTypes;
    foreach (DebuggerEngineType et, requiredTypes) {
        if (canUseEngine(et, sp, cmdLineEnabledEngines, &result)) {
            usableType = et;
            break;
        } else {
            unavailableTypes.push_back(et);
        }
    }
    if (usableType == NoEngineType) {
        if (requiredTypes.size() == 1) {
            result.errorMessage = DebuggerPlugin::tr(
                "The debugger engine '%1' required for debugging binaries of the type '%2'"
                " is not configured correctly.").
                arg(QLatin1String(engineTypeName(requiredTypes.front())), sp.toolChainAbi.toString());
        } else {
            result.errorMessage = DebuggerPlugin::tr(
                "None of the debugger engines '%1' capable of debugging binaries of the type '%2'"
                " is configured correctly.").
                arg(engineTypeNames(requiredTypes), sp.toolChainAbi.toString());
        }
        return result;
    }
    if (debug)
        qDebug() << "Configured engine: " << engineTypeName(usableType);
    // Inform verbosely about MinGW-gdb/CDB fallbacks. Do not complain about LLDB, for now.
    if (!result.errorDetails.isEmpty() && unavailableTypes.count(LldbEngineType) != unavailableTypes.size()) {
        const QString msg = DebuggerPlugin::tr(
            "The preferred debugger engine for debugging binaries of type '%1' is not available.\n"
            "The debugger engine '%2' will be used as a fallback.\nDetails: %3").
                arg(sp.toolChainAbi.toString(), QLatin1String(engineTypeName(usableType)),
                    result.errorDetails.join(QString(QLatin1Char('\n'))));
        debuggerCore()->showMessage(msg, LogWarning);
        showMessageBox(QMessageBox::Warning, DebuggerPlugin::tr("Warning"), msg);
    }
    // Anything left: Happy.
    result.errorMessage.clear();
    result.errorDetails.clear();
    if (qmlLanguage && cppLanguage) {
        result.masterSlaveEngineTypes.first = QmlCppEngineType;
        result.masterSlaveEngineTypes.second = usableType;
    } else {
        result.masterSlaveEngineTypes.first = usableType;
    }
    if (debug)
        qDebug() << engineTypeName(result.masterSlaveEngineTypes.first) << engineTypeName(result.masterSlaveEngineTypes.second);
    return result;
}

////////////////////////////////////////////////////////////////////////
//
// DebuggerRunControlFactory
//
////////////////////////////////////////////////////////////////////////

// A factory to create DebuggerRunControls
DebuggerRunControlFactory::DebuggerRunControlFactory(QObject *parent,
        unsigned enabledEngines)
    : IRunControlFactory(parent), m_enabledEngines(enabledEngines)
{}

bool DebuggerRunControlFactory::canRun(RunConfiguration *runConfiguration, RunMode mode) const
{
    return (mode == DebugRunMode || mode == DebugRunModeWithBreakOnMain)
            && qobject_cast<LocalApplicationRunConfiguration *>(runConfiguration);
}

QString DebuggerRunControlFactory::displayName() const
{
    return DebuggerRunControl::tr("Debug");
}

// Find Qt installation by running qmake
static inline QString findQtInstallPath(const Utils::FileName &qmakePath)
{
    QProcess proc;
    QStringList args;
    args.append(_("-query"));
    args.append(_("QT_INSTALL_HEADERS"));
    proc.start(qmakePath.toString(), args);
    if (!proc.waitForStarted()) {
        qWarning("%s: Cannot start '%s': %s", Q_FUNC_INFO, qPrintable(qmakePath.toString()),
           qPrintable(proc.errorString()));
        return QString();
    }
    proc.closeWriteChannel();
    if (!proc.waitForFinished()) {
        Utils::SynchronousProcess::stopProcess(proc);
        qWarning("%s: Timeout running '%s'.", Q_FUNC_INFO, qPrintable(qmakePath.toString()));
        return QString();
    }
    if (proc.exitStatus() != QProcess::NormalExit) {
        qWarning("%s: '%s' crashed.", Q_FUNC_INFO, qPrintable(qmakePath.toString()));
        return QString();
    }
    const QByteArray ba = proc.readAllStandardOutput().trimmed();
    QDir dir(QString::fromLocal8Bit(ba));
    if (dir.exists() && dir.cdUp())
        return dir.absolutePath();
    return QString();
}

static DebuggerStartParameters localStartParameters(RunConfiguration *runConfiguration)
{
    DebuggerStartParameters sp;
    QTC_ASSERT(runConfiguration, return sp);
    LocalApplicationRunConfiguration *rc =
            qobject_cast<LocalApplicationRunConfiguration *>(runConfiguration);
    QTC_ASSERT(rc, return sp);

    sp.environment = rc->environment();
    sp.workingDirectory = rc->workingDirectory();

#if defined(Q_OS_WIN)
    // Work around QTBUG-17529 (QtDeclarative fails with 'File name case mismatch' ...)
    sp.workingDirectory = Utils::normalizePathName(sp.workingDirectory);
#endif

    sp.executable = rc->executable();
    if (sp.executable.isEmpty())
        return sp;
    sp.startMode = StartInternal;
    sp.processArgs = rc->commandLineArguments();
    sp.toolChainAbi = rc->abi();
    if (!sp.toolChainAbi.isValid()) {
        QList<Abi> abis = Abi::abisOfBinary(Utils::FileName::fromString(sp.executable));
        if (!abis.isEmpty())
            sp.toolChainAbi = abis.at(0);
    }
    sp.useTerminal = rc->runMode() == LocalApplicationRunConfiguration::Console;
    sp.dumperLibrary = rc->dumperLibrary();
    sp.dumperLibraryLocations = rc->dumperLibraryLocations();

    if (const ProjectExplorer::Target *target = runConfiguration->target()) {
        if (QByteArray(target->metaObject()->className()).contains("Qt4")) {
            const Utils::FileName qmake = Utils::BuildableHelperLibrary::findSystemQt(sp.environment);
            if (!qmake.isEmpty())
                sp.qtInstallPath = findQtInstallPath(qmake);
        }
        if (const ProjectExplorer::Project *project = target->project()) {
            sp.projectSourceDirectory = project->projectDirectory();
            if (const ProjectExplorer::BuildConfiguration *buildConfig = target->activeBuildConfiguration()) {
                sp.projectBuildDirectory = buildConfig->buildDirectory();
                if (const ProjectExplorer::ToolChain *tc = buildConfig->toolChain())
                    sp.debuggerCommand = tc->debuggerCommand().toString();
            }
            sp.projectSourceFiles = project->files(Project::ExcludeGeneratedFiles);
        }
    }

    if (debuggerCore()->isActiveDebugLanguage(QmlLanguage)) {
        sp.qmlServerAddress = _("127.0.0.1");
        sp.qmlServerPort = runConfiguration->qmlDebugServerPort();

        // Makes sure that all bindings go through the JavaScript engine, so that
        // breakpoints are actually hit!
        const QString optimizerKey = _("QML_DISABLE_OPTIMIZER");
        if (!sp.environment.hasKey(optimizerKey)) {
            sp.environment.set(optimizerKey, _("1"));
        }

        Utils::QtcProcess::addArg(&sp.processArgs,
                                  QString::fromLatin1("-qmljsdebugger=port:%1,block").arg(sp.qmlServerPort));
    }

    // FIXME: If it's not yet build this will be empty and not filled
    // when rebuild as the runConfiguration is not stored and therefore
    // cannot be used to retrieve the dumper location.
    //qDebug() << "DUMPER: " << sp.dumperLibrary << sp.dumperLibraryLocations;
    sp.displayName = rc->displayName();

    return sp;
}

RunControl *DebuggerRunControlFactory::create
    (RunConfiguration *runConfiguration, RunMode mode)
{
    QTC_ASSERT(mode == DebugRunMode || mode == DebugRunModeWithBreakOnMain, return 0);
    DebuggerStartParameters sp = localStartParameters(runConfiguration);
    if (sp.startMode == NoStartMode)
        return 0;
    if (mode == DebugRunModeWithBreakOnMain)
        sp.breakOnMain = true;
    return create(sp, runConfiguration);
}

RunConfigWidget *DebuggerRunControlFactory::createConfigurationWidget
    (RunConfiguration *runConfiguration)
{
    // NBS TODO: Add GDB-specific configuration widget
    Q_UNUSED(runConfiguration)
    return 0;
}

DebuggerRunControl *DebuggerRunControlFactory::create
    (const DebuggerStartParameters &sp, RunConfiguration *runConfiguration)
{
    const ConfigurationCheck check = checkDebugConfiguration(sp);

    if (!check) {
        //appendMessage(errorMessage, true);
        Core::ICore::showWarningWithOptions(DebuggerRunControl::tr("Debugger"),
            check.errorMessage, check.errorDetailsString(), check.settingsCategory, check.settingsPage);
        return 0;
    }

    return new DebuggerRunControl(runConfiguration, sp, check.masterSlaveEngineTypes);
}

DebuggerEngine *DebuggerRunControlFactory::createEngine
    (DebuggerEngineType et,
     const DebuggerStartParameters &sp,
     DebuggerEngine *masterEngine,
     QString *errorMessage)
{
    switch (et) {
    case GdbEngineType:
        return createGdbEngine(sp, masterEngine);
    case ScriptEngineType:
        return createScriptEngine(sp);
    case CdbEngineType:
        return createCdbEngine(sp, masterEngine, errorMessage);
    case PdbEngineType:
        return createPdbEngine(sp);
    case QmlEngineType:
        return createQmlEngine(sp, masterEngine);
    case LldbEngineType:
        return createLldbEngine(sp);
    default:
        break;
    }
    *errorMessage = DebuggerRunControl::tr("Unable to create a debugger engine of the type '%1'").
                    arg(_(engineTypeName(et)));
    return 0;
}


} // namespace Debugger