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qt-creator/src/plugins/debugger/cdb/cdbdebugengine.cpp

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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#include "cdbdebugengine.h"
#include "cdbdebugengine_p.h"
#include "cdbdebugoutput.h"
#include "cdbdebugeventcallback.h"
#include "cdbstacktracecontext.h"
#include "cdbsymbolgroupcontext.h"
#include "cdbbreakpoint.h"
#include "cdbmodules.h"
#include "cdbassembler.h"
#include "cdboptionspage.h"
#include "cdboptions.h"
#include "cdbexceptionutils.h"
#include "cdbsymbolpathlisteditor.h"
#include "debuggeragents.h"
#include "debuggeruiswitcher.h"
#include "debuggermainwindow.h"
#include "debuggeractions.h"
#include "debuggermanager.h"
#include "breakhandler.h"
#include "stackhandler.h"
#include "watchhandler.h"
#include "threadshandler.h"
#include "registerhandler.h"
#include "moduleshandler.h"
#include "watchutils.h"
#include <coreplugin/icore.h>
#include <utils/qtcassert.h>
#include <utils/winutils.h>
#include <utils/consoleprocess.h>
#include <utils/fancymainwindow.h>
#include <texteditor/itexteditor.h>
#include <utils/savedaction.h>
#include <utils/checkablemessagebox.h>
#include <QtCore/QDebug>
#include <QtCore/QTimer>
#include <QtCore/QTimerEvent>
#include <QtCore/QFileInfo>
#include <QtCore/QDir>
#include <QtCore/QLibrary>
#include <QtCore/QCoreApplication>
#include <QtGui/QMessageBox>
#include <QtGui/QMainWindow>
#include <QtGui/QApplication>
#include <QtGui/QToolTip>
#define DBGHELP_TRANSLATE_TCHAR
#include <inc/Dbghelp.h>
static const char *localSymbolRootC = "local";
namespace Debugger {
namespace Internal {
typedef QList<WatchData> WatchList;
// ----- Message helpers
static QString msgStackIndexOutOfRange(int idx, int size)
{
return QString::fromLatin1("Frame index %1 out of range (%2).").arg(idx).arg(size);
}
QString msgDebuggerCommandFailed(const QString &command, HRESULT hr)
{
return QString::fromLatin1("Unable to execute '%1': %2").arg(command, CdbCore::msgDebugEngineComResult(hr));
}
static const char *msgNoStackTraceC = "Internal error: no stack trace present.";
// Format function failure message. Pass in Q_FUNC_INFO
static QString msgFunctionFailed(const char *func, const QString &why)
{
// Strip a "cdecl_ int namespace1::class::foo(int bar)" as
// returned by Q_FUNC_INFO down to "foo"
QString function = QLatin1String(func);
const int firstParentPos = function.indexOf(QLatin1Char('('));
if (firstParentPos != -1)
function.truncate(firstParentPos);
const int classSepPos = function.lastIndexOf(QLatin1String("::"));
if (classSepPos != -1)
function.remove(0, classSepPos + 2);
//: Function call failed
return CdbDebugEngine::tr("The function \"%1()\" failed: %2").arg(function, why);
}
// ----- Engine helpers
// --- CdbDebugEnginePrivate
CdbDebugEnginePrivate::CdbDebugEnginePrivate(const QSharedPointer<CdbOptions> &options,
CdbDebugEngine *engine) :
m_options(options),
m_hDebuggeeProcess(0),
m_hDebuggeeThread(0),
m_breakEventMode(BreakEventHandle),
m_dumper(new CdbDumperHelper(engine, this)),
m_currentThreadId(-1),
m_eventThreadId(-1),
m_interruptArticifialThreadId(-1),
m_ignoreInitialBreakPoint(false),
m_interrupted(false),
m_engine(engine),
m_currentStackTrace(0),
m_firstActivatedFrame(true),
m_inferiorStartupComplete(false),
m_mode(AttachCore),
m_stoppedReason(StoppedOther)
{
connect(this, SIGNAL(watchTimerDebugEvent()), this, SLOT(handleDebugEvent()));
connect(this, SIGNAL(modulesLoaded()), this, SLOT(slotModulesLoaded()));
}
bool CdbDebugEnginePrivate::init(QString *errorMessage)
{
enum { bufLen = 10240 };
if (!CdbCore::CoreEngine::init(m_options->path, errorMessage))
return false;
CdbDebugOutput *output = new CdbDebugOutput;
connect(output, SIGNAL(showMessage(QString,int,int)),
m_engine, SLOT(showMessage(QString,int,int)),
Qt::QueuedConnection); // Multithread invocation when loading dumpers.
setDebugOutput(DebugOutputBasePtr(output));
setDebugEventCallback(DebugEventCallbackBasePtr(new CdbDebugEventCallback(m_engine)));
updateCodeLevel();
return true;
}
IDebuggerEngine *CdbDebugEngine::create(Debugger::DebuggerManager *manager,
const QSharedPointer<CdbOptions> &options,
QString *errorMessage)
{
CdbDebugEngine *rc = new CdbDebugEngine(manager, options);
if (rc->m_d->init(errorMessage)) {
rc->syncDebuggerPaths();
return rc;
}
delete rc;
return 0;
}
void CdbDebugEnginePrivate::updateCodeLevel()
{
const CdbCore::CoreEngine::CodeLevel cl = theDebuggerBoolSetting(OperateByInstruction) ?
CdbCore::CoreEngine::CodeLevelAssembly : CdbCore::CoreEngine::CodeLevelSource;
setCodeLevel(cl);
}
CdbDebugEnginePrivate::~CdbDebugEnginePrivate()
{
cleanStackTrace();
}
DebuggerManager *CdbDebugEnginePrivate::manager() const
{
return m_engine->manager();
}
void CdbDebugEnginePrivate::clearForRun()
{
if (debugCDB)
qDebug() << Q_FUNC_INFO;
m_breakEventMode = BreakEventHandle;
m_eventThreadId = m_interruptArticifialThreadId = -1;
m_interrupted = false;
cleanStackTrace();
m_stoppedReason = StoppedOther;
m_stoppedMessage.clear();
}
void CdbDebugEnginePrivate::cleanStackTrace()
{
if (m_currentStackTrace) {
delete m_currentStackTrace;
m_currentStackTrace = 0;
}
m_firstActivatedFrame = false;
m_editorToolTipCache.clear();
}
CdbDebugEngine::CdbDebugEngine(DebuggerManager *manager, const QSharedPointer<CdbOptions> &options) :
IDebuggerEngine(manager),
m_d(new CdbDebugEnginePrivate(options, this))
{
m_d->m_consoleStubProc.setMode(Utils::ConsoleProcess::Suspend);
connect(&m_d->m_consoleStubProc, SIGNAL(processMessage(QString,bool)),
this, SLOT(slotConsoleStubMessage(QString, bool)));
connect(&m_d->m_consoleStubProc, SIGNAL(processStarted()),
this, SLOT(slotConsoleStubStarted()));
connect(&m_d->m_consoleStubProc, SIGNAL(wrapperStopped()),
this, SLOT(slotConsoleStubTerminated()));
}
CdbDebugEngine::~CdbDebugEngine()
{
delete m_d;
}
void CdbDebugEngine::setState(DebuggerState state, const char *func, int line)
{
if (debugCDB)
qDebug() << "setState(" << state << ") at " << func << ':' << line;
IDebuggerEngine::setState(state);
}
void CdbDebugEngine::shutdown()
{
exitDebugger();
}
QString CdbDebugEngine::editorToolTip(const QString &exp, const QString &function)
{
// Figure the editor tooltip. Ask the frame context of the
// function if it is a local variable it knows. If that is not
// the case, try to evaluate via debugger
QString errorMessage;
QString rc;
// Find the frame of the function if there is any
CdbSymbolGroupContext *frame = 0;
if (m_d->m_currentStackTrace && !function.isEmpty()) {
const int frameIndex = m_d->m_currentStackTrace->indexOf(function);
if (debugToolTips)
qDebug() << "CdbDebugEngine::editorToolTip" << exp << function << frameIndex;
if (frameIndex != -1)
frame = m_d->m_currentStackTrace->cdbSymbolGroupContextAt(frameIndex, &errorMessage);
}
if (frame && frame->editorToolTip(QLatin1String("local.") + exp, &rc, &errorMessage))
return rc;
// No function/symbol context found, try to evaluate in current context.
// Do not append type as this will mostly be 'long long' for integers, etc.
QString type;
if (debugToolTips)
qDebug() << "Defaulting to expression";
if (!m_d->evaluateExpression(exp, &rc, &type, &errorMessage))
return QString();
return rc;
}
void CdbDebugEngine::setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor, int cursorPos)
{
typedef CdbDebugEnginePrivate::EditorToolTipCache EditorToolTipCache;
if (debugCDB)
qDebug() << Q_FUNC_INFO << '\n' << cursorPos;
// Need a stopped debuggee and a cpp file
if (!m_d->m_hDebuggeeProcess || m_d->isDebuggeeRunning())
return;
if (!isCppEditor(editor))
return;
// Determine expression and function
QString toolTip;
do {
int line;
int column;
QString function;
const QString exp = cppExpressionAt(editor, cursorPos, &line, &column, &function);
if (function.isEmpty() || exp.isEmpty())
break;
// Check cache (key containing function) or try to figure out expression
QString cacheKey = function;
cacheKey += QLatin1Char('@');
cacheKey += exp;
const EditorToolTipCache::const_iterator cit = m_d->m_editorToolTipCache.constFind(cacheKey);
if (cit != m_d->m_editorToolTipCache.constEnd()) {
toolTip = cit.value();
} else {
toolTip = editorToolTip(exp, function);
if (!toolTip.isEmpty())
m_d->m_editorToolTipCache.insert(cacheKey, toolTip);
}
} while (false);
// Display
QToolTip::hideText();
if (!toolTip.isEmpty())
QToolTip::showText(mousePos, toolTip);
}
void CdbDebugEnginePrivate::clearDisplay()
{
m_engine->threadsHandler()->removeAll();
m_engine->modulesHandler()->removeAll();
m_engine->registerHandler()->removeAll();
}
void CdbDebugEnginePrivate::checkVersion()
{
static bool versionNotChecked = true;
// Check for version 6.11 (extended expression syntax)
if (versionNotChecked) {
versionNotChecked = false;
// Get engine DLL version
QString errorMessage;
const QString version = Utils::winGetDLLVersion(Utils::WinDLLProductVersion, dbengDLL(), &errorMessage);
if (version.isEmpty()) {
qWarning("%s\n", qPrintable(errorMessage));
return;
}
// Compare
const double minVersion = 6.11;
m_engine->showMessage(CdbDebugEngine::tr("Version: %1").arg(version));
if (version.toDouble() < minVersion) {
const QString msg = CdbDebugEngine::tr(
"<html>The installed version of the <i>Debugging Tools for Windows</i> (%1) "
"is rather old. Upgrading to version %2 is recommended "
"for the proper display of Qt's data types.</html>").arg(version).arg(minVersion);
Core::ICore::instance()->showWarningWithOptions(CdbDebugEngine::tr("Debugger"), msg, QString(),
QLatin1String(Constants::DEBUGGER_SETTINGS_CATEGORY),
CdbOptionsPage::settingsId());
}
}
}
void CdbDebugEngine::startupChecks()
{
// Check symbol server unless the user has an external/internal setup
if (!qgetenv("_NT_SYMBOL_PATH").isEmpty()
|| CdbOptions::indexOfSymbolServerPath(m_d->m_options->symbolPaths) != -1)
return;
// Prompt to use Symbol server unless the user checked "No nagging".
Core::ICore *core = Core::ICore::instance();
const QString nagSymbolServerKey = CdbOptions::settingsGroup() + QLatin1String("/NoPromptSymbolServer");
bool noFurtherNagging = core->settings()->value(nagSymbolServerKey, false).toBool();
if (noFurtherNagging)
return;
const QString symServUrl = QLatin1String("http://support.microsoft.com/kb/311503");
const QString msg = tr("<html><head/><body><p>The debugger is not configured to use the public "
"<a href=\"%1\">Microsoft Symbol Server</a>. This is recommended "
"for retrieval of the symbols of the operating system libraries.</p>"
"<p><i>Note:</i> A fast internet connection is required for this to work smoothly. Also, a delay "
"might occur when connecting for the first time.</p>"
"<p>Would you like to set it up?</p></br>"
"</body></html>").arg(symServUrl);
const QDialogButtonBox::StandardButton answer =
Utils::CheckableMessageBox::question(core->mainWindow(), tr("Symbol Server"), msg,
tr("Do not ask again"), &noFurtherNagging);
core->settings()->setValue(nagSymbolServerKey, noFurtherNagging);
if (answer == QDialogButtonBox::No)
return;
// Prompt for path and add it. Synchronize QSetting and debugger.
const QString cacheDir = CdbSymbolPathListEditor::promptCacheDirectory(core->mainWindow());
if (cacheDir.isEmpty())
return;
m_d->m_options->symbolPaths.push_back(CdbOptions::symbolServerPath(cacheDir));
m_d->m_options->toSettings(core->settings());
syncDebuggerPaths();
}
void CdbDebugEngine::startDebugger()
{
QTC_ASSERT(runControl(), return);
const DebuggerStartParameters &sp = runControl()->sp();
if (debugCDBExecution)
qDebug() << "startDebugger";
CdbCore::BreakPoint::clearNormalizeFileNameCache();
startupChecks();
setState(AdapterStarting, Q_FUNC_INFO, __LINE__);
m_d->checkVersion();
if (m_d->m_hDebuggeeProcess) {
warning(QLatin1String("Internal error: Attempt to start debugger while another process is being debugged."));
setState(AdapterStartFailed, Q_FUNC_INFO, __LINE__);
emit startFailed();
return;
}
switch (sp.startMode) {
case AttachCore:
case AttachToRemote:
warning(QLatin1String("Internal error: Mode not supported."));
setState(AdapterStartFailed, Q_FUNC_INFO, __LINE__);
emit startFailed();
break;
default:
break;
}
m_d->m_mode = sp.startMode;
m_d->clearDisplay();
m_d->m_inferiorStartupComplete = false;
setState(AdapterStarted, Q_FUNC_INFO, __LINE__);
// Options
QString errorMessage;
if (!m_d->setBreakOnThrow(theDebuggerBoolSetting(BreakOnThrow), &errorMessage))
showMessage(errorMessage, LogWarning);
m_d->setVerboseSymbolLoading(m_d->m_options->verboseSymbolLoading);
// Figure out dumper. @TODO: same in gdb...
const QString dumperLibName = QDir::toNativeSeparators(manager()->qtDumperLibraryName());
bool dumperEnabled = m_d->m_mode != AttachCore
&& m_d->m_mode != AttachCrashedExternal
&& manager()->qtDumperLibraryEnabled();
if (dumperEnabled) {
const QFileInfo fi(dumperLibName);
if (!fi.isFile()) {
const QStringList &locations = manager()->qtDumperLibraryLocations();
const QString loc = locations.join(QLatin1String(", "));
const QString msg = tr("The dumper library was not found at %1.").arg(loc);
manager()->showQtDumperLibraryWarning(msg);
dumperEnabled = false;
}
}
m_d->m_dumper->reset(dumperLibName, dumperEnabled);
setState(InferiorStarting, Q_FUNC_INFO, __LINE__);
manager()->showStatusMessage("Starting Debugger", messageTimeOut);
bool rc = false;
bool needWatchTimer = false;
m_d->clearForRun();
m_d->updateCodeLevel();
m_d->m_ignoreInitialBreakPoint = false;
switch (m_d->m_mode) {
case AttachExternal:
case AttachCrashedExternal:
rc = startAttachDebugger(sp.attachPID, m_d->m_mode, &errorMessage);
needWatchTimer = true; // Fetch away module load, etc. even if crashed
break;
case StartInternal:
case StartExternal:
if (sp.useTerminal) {
// Attaching to console processes triggers an initial breakpoint, which we do not want
m_d->m_ignoreInitialBreakPoint = true;
// Launch console stub and wait for its startup
m_d->m_consoleStubProc.stop(); // We leave the console open, so recycle it now.
m_d->m_consoleStubProc.setWorkingDirectory(sp.workingDirectory);
m_d->m_consoleStubProc.setEnvironment(sp.environment);
rc = m_d->m_consoleStubProc.start(sp.executable, sp.processArgs);
if (!rc)
errorMessage = tr("The console stub process was unable to start '%1'.").arg(sp.executable);
// continues in slotConsoleStubStarted()...
} else {
needWatchTimer = true;
rc = m_d->startDebuggerWithExecutable(sp.workingDirectory,
sp.executable,
sp.processArgs,
sp.environment,
&errorMessage);
}
break;
case AttachCore:
errorMessage = tr("Attaching to core files is not supported!");
break;
}
if (rc) {
if (needWatchTimer)
m_d->startWatchTimer();
emit startSuccessful();
} else {
warning(errorMessage);
setState(InferiorStartFailed, Q_FUNC_INFO, __LINE__);
emit startFailed();
}
}
bool CdbDebugEngine::startAttachDebugger(qint64 pid, DebuggerStartMode sm, QString *errorMessage)
{
// Need to attach invasively, otherwise, no notification signals
// for for CreateProcess/ExitProcess occur.
// Initial breakpoint occur:
// 1) Desired: When attaching to a crashed process
// 2) Undesired: When starting up a console process, in conjunction
// with the 32bit Wow-engine
// As of version 6.11, the flag only affects 1). 2) Still needs to be suppressed
// by lookup at the state of the application (startup trap). However,
// there is no startup trap when attaching to a process that has been
// running for a while. (see notifyException).
const bool suppressInitialBreakPoint = sm != AttachCrashedExternal;
return m_d->startAttachDebugger(pid, suppressInitialBreakPoint, errorMessage);
}
void CdbDebugEnginePrivate::processCreatedAttached(ULONG64 processHandle, ULONG64 initialThreadHandle)
{
m_engine->setState(InferiorRunningRequested, Q_FUNC_INFO, __LINE__);
setDebuggeeHandles(reinterpret_cast<HANDLE>(processHandle), reinterpret_cast<HANDLE>(initialThreadHandle));
ULONG currentThreadId;
if (SUCCEEDED(interfaces().debugSystemObjects->GetThreadIdByHandle(initialThreadHandle, &currentThreadId))) {
m_currentThreadId = currentThreadId;
} else {
m_currentThreadId = 0;
}
// Clear any saved breakpoints and set initial breakpoints
m_engine->executeDebuggerCommand(QLatin1String("bc"));
if (m_engine->breakHandler()->hasPendingBreakpoints()) {
if (debugCDBExecution)
qDebug() << "processCreatedAttached: Syncing breakpoints";
m_engine->attemptBreakpointSynchronization();
}
// Attaching to crashed: This handshake (signalling an event) is required for
// the exception to be delivered to the debugger
// Also, see special handling in slotModulesLoaded().
if (m_mode == AttachCrashedExternal) {
const QString crashParameter = m_engine->runControl()->sp().crashParameter;
if (!crashParameter.isEmpty()) {
ULONG64 evtNr = crashParameter.toULongLong();
const HRESULT hr = interfaces().debugControl->SetNotifyEventHandle(evtNr);
if (FAILED(hr))
m_engine->warning(QString::fromLatin1("Handshake failed on event #%1: %2").arg(evtNr).arg(CdbCore::msgComFailed("SetNotifyEventHandle", hr)));
}
}
m_engine->setState(InferiorRunning, Q_FUNC_INFO, __LINE__);
if (debugCDBExecution)
qDebug() << "<processCreatedAttached";
}
void CdbDebugEngine::processTerminated(unsigned long exitCode)
{
showMessage(tr("The process exited with exit code %1.").arg(exitCode));
if (state() != InferiorStopping)
setState(InferiorStopping, Q_FUNC_INFO, __LINE__);
setState(InferiorStopped, Q_FUNC_INFO, __LINE__);
setState(InferiorShuttingDown, Q_FUNC_INFO, __LINE__);
m_d->setDebuggeeHandles(0, 0);
m_d->clearForRun();
setState(InferiorShutDown, Q_FUNC_INFO, __LINE__);
// Avoid calls from event handler.
QTimer::singleShot(0, manager(), SLOT(exitDebugger()));
}
bool CdbDebugEnginePrivate::endInferior(EndInferiorAction action, QString *errorMessage)
{
// Process must be stopped in order to terminate
m_engine->setState(InferiorShuttingDown, Q_FUNC_INFO, __LINE__); // pretend it is shutdown
const bool wasRunning = isDebuggeeRunning();
if (wasRunning) {
interruptInterferiorProcess(errorMessage);
QCoreApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
}
bool success = false;
switch (action) {
case DetachInferior:
if (detachCurrentProcess(errorMessage))
success = true;
break;
case TerminateInferior:
do {
// The exit process event handler will not be called.
terminateCurrentProcess(errorMessage);
if (wasRunning) {
success = true;
break;
}
if (terminateProcesses(errorMessage))
success = true;
} while (false);
QCoreApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
break;
}
// Perform cleanup even when failed..no point clinging to the process
setDebuggeeHandles(0, 0);
killWatchTimer();
m_engine->setState(success ? InferiorShutDown : InferiorShutdownFailed, Q_FUNC_INFO, __LINE__);
return success;
}
// End debugging. Note that this can invoked via user action
// or the processTerminated() event handler, in which case it
// must not kill the process again.
void CdbDebugEnginePrivate::endDebugging(EndDebuggingMode em)
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << em;
const DebuggerState oldState = m_engine->state();
if (oldState == DebuggerNotReady || m_mode == AttachCore)
return;
// Do we need to stop the process?
QString errorMessage;
if (oldState != InferiorShutDown && m_hDebuggeeProcess) {
EndInferiorAction action;
switch (em) {
case EndDebuggingAuto:
action = (m_mode == AttachExternal || m_mode == AttachCrashedExternal) ?
DetachInferior : TerminateInferior;
break;
case EndDebuggingDetach:
action = DetachInferior;
break;
case EndDebuggingTerminate:
action = TerminateInferior;
break;
}
if (debugCDB)
qDebug() << Q_FUNC_INFO << action;
// Need a stopped debuggee to act
if (!endInferior(action, &errorMessage)) {
errorMessage = QString::fromLatin1("Unable to detach from/end the debuggee: %1").arg(errorMessage);
m_engine->showMessage(errorMessage, LogError);
}
errorMessage.clear();
}
// Clean up resources (open files, etc.)
m_engine->setState(EngineShuttingDown, Q_FUNC_INFO, __LINE__);
clearForRun();
const bool endedCleanly = endSession(&errorMessage);
m_engine->setState(DebuggerNotReady, Q_FUNC_INFO, __LINE__);
if (!endedCleanly) {
errorMessage = QString::fromLatin1("There were errors trying to end debugging:\n%1").arg(errorMessage);
m_engine->showMessage(errorMessage, LogError);
}
}
void CdbDebugEngine::exitDebugger()
{
m_d->endDebugging();
}
void CdbDebugEngine::detachDebugger()
{
m_d->endDebugging(CdbDebugEnginePrivate::EndDebuggingDetach);
}
CdbSymbolGroupContext *CdbDebugEnginePrivate::getSymbolGroupContext(int frameIndex, QString *errorMessage) const
{
if (!m_currentStackTrace) {
*errorMessage = QLatin1String(msgNoStackTraceC);
return 0;
}
if (CdbSymbolGroupContext *sg = m_currentStackTrace->cdbSymbolGroupContextAt(frameIndex, errorMessage))
return sg;
return 0;
}
void CdbDebugEngine::evaluateWatcher(WatchData *wd)
{
if (debugCDBWatchHandling)
qDebug() << Q_FUNC_INFO << wd->exp;
QString errorMessage;
QString value;
QString type;
QString exp = wd->exp;
// Remove locals watch prefix.
if (exp.startsWith(QLatin1String("local.")))
exp.remove(0, 6);
if (m_d->evaluateExpression(exp, &value, &type, &errorMessage)) {
wd->setValue(value);
wd->setType(type);
} else {
wd->setValue(errorMessage);
wd->setTypeUnneeded();
}
wd->setHasChildren(false);
}
void CdbDebugEngine::updateWatchData(const WatchData &incomplete)
{
// Watch item was edited while running
if (m_d->isDebuggeeRunning())
return;
if (debugCDBWatchHandling)
qDebug() << Q_FUNC_INFO << "\n " << incomplete.toString();
WatchHandler *watchHandler = manager()->watchHandler();
if (incomplete.iname.startsWith("watch.")) {
WatchData watchData = incomplete;
evaluateWatcher(&watchData);
watchHandler->insertData(watchData);
return;
}
const int frameIndex = manager()->stackHandler()->currentIndex();
bool success = false;
QString errorMessage;
do {
CdbSymbolGroupContext *sg = m_d->m_currentStackTrace->cdbSymbolGroupContextAt(frameIndex, &errorMessage);
if (!sg)
break;
if (!sg->completeData(incomplete, watchHandler, &errorMessage))
break;
success = true;
} while (false);
if (!success)
warning(msgFunctionFailed(Q_FUNC_INFO, errorMessage));
if (debugCDBWatchHandling > 1)
qDebug() << *manager()->watchHandler()->model(LocalsWatch);
}
// Continue inferior with a debugger command, such as "p", "pt"
// or its thread variations
bool CdbDebugEnginePrivate::executeContinueCommand(const QString &command)
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << command;
clearForRun();
updateCodeLevel(); // Step by instruction
m_engine->setState(InferiorRunningRequested, Q_FUNC_INFO, __LINE__);
m_engine->showMessage(CdbDebugEngine::tr("Continuing with '%1'...").arg(command));
QString errorMessage;
const bool success = executeDebuggerCommand(command, &errorMessage);
if (success) {
m_engine->setState(InferiorRunning, Q_FUNC_INFO, __LINE__);
startWatchTimer();
} else {
m_engine->setState(InferiorStopped, Q_FUNC_INFO, __LINE__);
m_engine->warning(CdbDebugEngine::tr("Unable to continue: %1").arg(errorMessage));
}
return success;
}
static inline QString msgStepFailed(unsigned long executionStatus, int threadId, const QString &why)
{
if (executionStatus == DEBUG_STATUS_STEP_OVER)
return QString::fromLatin1("Thread %1: Unable to step over: %2").arg(threadId).arg(why);
return QString::fromLatin1("Thread %1: Unable to step into: %2").arg(threadId).arg(why);
}
// Step out has to be done via executing 'gu'. TODO: Remove once it is
// accessible via normal API for SetExecutionStatus().
enum { CdbExtendedExecutionStatusStepOut = 7452347 };
// Step with DEBUG_STATUS_STEP_OVER ('p'-command),
// DEBUG_STATUS_STEP_INTO ('t'-trace-command) or
// CdbExtendedExecutionStatusStepOut ("gu"-command)
// its reverse equivalents in the case of single threads.
bool CdbDebugEngine::step(unsigned long executionStatus)
{
if (debugCDBExecution)
qDebug() << ">step" << executionStatus << "curr " << m_d->m_currentThreadId << " evt " << m_d->m_eventThreadId;
// State of reverse stepping as of 10/2009 (Debugging tools 6.11@404):
// The constants exist, but invoking the calls leads to E_NOINTERFACE.
// Also there is no CDB command for it.
if (executionStatus == DEBUG_STATUS_REVERSE_STEP_OVER || executionStatus == DEBUG_STATUS_REVERSE_STEP_INTO) {
warning(tr("Reverse stepping is not implemented."));
return false;
}
// Do not step the artifical thread created to interrupt the debuggee.
if (m_d->m_interrupted && m_d->m_currentThreadId == m_d->m_interruptArticifialThreadId) {
warning(tr("Thread %1 cannot be stepped.").arg(m_d->m_currentThreadId));
return false;
}
// SetExecutionStatus() continues the thread that triggered the
// stop event (~# p). This can be confusing if the user is looking
// at the stack trace of another thread and wants to step that one. If that
// is the case, explicitly tell it to step the current thread using a command.
const int triggeringEventThread = m_d->m_eventThreadId;
const bool sameThread = triggeringEventThread == -1
|| m_d->m_currentThreadId == triggeringEventThread
|| manager()->threadsHandler()->threads().size() == 1;
m_d->clearForRun(); // clears thread ids
m_d->updateCodeLevel(); // Step by instruction or source line
setState(InferiorRunningRequested, Q_FUNC_INFO, __LINE__);
bool success = false;
if (sameThread && executionStatus != CdbExtendedExecutionStatusStepOut) { // Step event-triggering thread, use fast API
const HRESULT hr = m_d->interfaces().debugControl->SetExecutionStatus(executionStatus);
success = SUCCEEDED(hr);
if (!success)
warning(msgStepFailed(executionStatus, m_d->m_currentThreadId, CdbCore::msgComFailed("SetExecutionStatus", hr)));
} else {
// Need to use a command to explicitly specify the current thread
QString command;
QTextStream str(&command);
str << '~' << m_d->m_currentThreadId << ' ';
switch (executionStatus) {
case DEBUG_STATUS_STEP_OVER:
str << 'p';
break;
case DEBUG_STATUS_STEP_INTO:
str << 't';
break;
case CdbExtendedExecutionStatusStepOut:
str << "gu";
break;
}
showMessage(tr("Stepping %1").arg(command));
const HRESULT hr = m_d->interfaces().debugControl->Execute(DEBUG_OUTCTL_THIS_CLIENT, command.toLatin1().constData(), DEBUG_EXECUTE_ECHO);
success = SUCCEEDED(hr);
if (!success)
warning(msgStepFailed(executionStatus, m_d->m_currentThreadId, msgDebuggerCommandFailed(command, hr)));
}
if (success) {
// Oddity: Step into will first break at the calling function. Ignore
if (executionStatus == DEBUG_STATUS_STEP_INTO || executionStatus == DEBUG_STATUS_REVERSE_STEP_INTO)
m_d->m_breakEventMode = CdbDebugEnginePrivate::BreakEventIgnoreOnce;
m_d->startWatchTimer();
setState(InferiorRunning, Q_FUNC_INFO, __LINE__);
} else {
setState(InferiorStopped, Q_FUNC_INFO, __LINE__);
}
if (debugCDBExecution)
qDebug() << "<step samethread" << sameThread << "succeeded" << success;
return success;
}
void CdbDebugEngine::executeStep()
{
step(manager()->isReverseDebugging() ? DEBUG_STATUS_REVERSE_STEP_INTO : DEBUG_STATUS_STEP_INTO);
}
void CdbDebugEngine::executeNext()
{
step(manager()->isReverseDebugging() ? DEBUG_STATUS_REVERSE_STEP_OVER : DEBUG_STATUS_STEP_OVER);
}
void CdbDebugEngine::executeStepI()
{
executeStep(); // Step into by instruction (figured out by step)
}
void CdbDebugEngine::executeNextI()
{
executeNext(); // Step over by instruction (figured out by step)
}
void CdbDebugEngine::executeStepOut()
{
if (!manager()->isReverseDebugging())
step(CdbExtendedExecutionStatusStepOut);
}
void CdbDebugEngine::continueInferior()
{
QString errorMessage;
if (!m_d->continueInferior(&errorMessage))
warning(msgFunctionFailed(Q_FUNC_INFO, errorMessage));
}
// Continue process without notifications
bool CdbDebugEnginePrivate::continueInferiorProcess(QString *errorMessagePtr /* = 0 */)
{
if (debugCDBExecution)
qDebug() << "continueInferiorProcess";
const HRESULT hr = interfaces().debugControl->SetExecutionStatus(DEBUG_STATUS_GO);
if (FAILED(hr)) {
const QString errorMessage = CdbCore::msgComFailed("SetExecutionStatus", hr);
if (errorMessagePtr) {
*errorMessagePtr = errorMessage;
} else {
m_engine->warning(msgFunctionFailed(Q_FUNC_INFO, errorMessage));
}
return false;
}
return true;
}
// Continue process with notifications
bool CdbDebugEnginePrivate::continueInferior(QString *errorMessage)
{
// Check state: Are we running?
const ULONG ex = executionStatus();
if (debugCDB)
qDebug() << Q_FUNC_INFO << "\n ex=" << ex;
if (ex == DEBUG_STATUS_GO) {
m_engine->warning(QLatin1String("continueInferior() called while debuggee is running."));
return true;
}
// Request continue
m_engine->setState(InferiorRunningRequested, Q_FUNC_INFO, __LINE__);
bool success = false;
do {
clearForRun();
updateCodeLevel();
killWatchTimer();
manager()->resetLocation();
manager()->showStatusMessage(CdbDebugEngine::tr("Running requested..."), messageTimeOut);
if (!continueInferiorProcess(errorMessage))
break;
startWatchTimer();
success = true;
} while (false);
if (success) {
m_engine->setState(InferiorRunning, Q_FUNC_INFO, __LINE__);
} else {
m_engine->setState(InferiorStopped, Q_FUNC_INFO, __LINE__); // No RunningRequestFailed?
}
return true;
}
bool CdbDebugEnginePrivate::interruptInterferiorProcess(QString *errorMessage)
{
// Interrupt the interferior process without notifications
// Could use setInterrupt, but that does not work.
if (debugCDBExecution) {
qDebug() << "interruptInterferiorProcess ex=" << executionStatus();
}
const bool rc = debugBreakProcess(m_hDebuggeeProcess, errorMessage);
if (rc)
m_interrupted = true;
return rc;
}
void CdbDebugEnginePrivate::slotModulesLoaded()
{
// Attaching to crashed windows processes: Unless QtCreator is
// spawned by the debug handler and inherits the handles,
// the event handling does not work reliably (that is, the crash
// event is not delivered). In that case, force a break
if (m_mode == AttachCrashedExternal && m_engine->state() != InferiorStopped)
QTimer::singleShot(10, m_engine, SLOT(slotBreakAttachToCrashed()));
}
void CdbDebugEngine::slotBreakAttachToCrashed()
{
// Force a break when attaching to crashed process (if Creator was not spawned
// from handler).
if (state() != InferiorStopped) {
showMessage(QLatin1String("Forcing break..."));
m_d->m_dumper->disable();
interruptInferior();
}
}
void CdbDebugEngine::interruptInferior()
{
if (!m_d->m_hDebuggeeProcess || !m_d->isDebuggeeRunning())
return;
QString errorMessage;
setState(InferiorStopping, Q_FUNC_INFO, __LINE__);
if (!m_d->interruptInterferiorProcess(&errorMessage)) {
setState(InferiorStopFailed, Q_FUNC_INFO, __LINE__);
warning(msgFunctionFailed(Q_FUNC_INFO, errorMessage));
}
}
void CdbDebugEngine::executeRunToLine(const QString &fileName, int lineNumber)
{
showMessage(tr("Running up to %1:%2...").arg(fileName).arg(lineNumber));
QString errorMessage;
CdbCore::BreakPoint tempBreakPoint;
tempBreakPoint.fileName = fileName;
tempBreakPoint.lineNumber = lineNumber;
tempBreakPoint.oneShot = true;
const bool ok = tempBreakPoint.add(m_d->interfaces().debugControl, &errorMessage)
&& m_d->continueInferior(&errorMessage);
if (!ok)
warning(errorMessage);
}
void CdbDebugEngine::executeRunToFunction(const QString &functionName)
{
showMessage(tr("Running up to function '%1()'...").arg(functionName));
QString errorMessage;
CdbCore::BreakPoint tempBreakPoint;
tempBreakPoint.funcName = functionName;
tempBreakPoint.oneShot = true;
const bool ok = tempBreakPoint.add(m_d->interfaces().debugControl, &errorMessage)
&& m_d->continueInferior(&errorMessage);
if (!ok)
warning(errorMessage);
}
void CdbDebugEngine::executeJumpToLine(const QString & /* fileName */, int /*lineNumber*/)
{
warning(tr("Jump to line is not implemented"));
}
void CdbDebugEngine::assignValueInDebugger(const QString &expr, const QString &value)
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << expr << value;
const int frameIndex = manager()->stackHandler()->currentIndex();
QString errorMessage;
bool success = false;
do {
QString newValue;
CdbSymbolGroupContext *sg = m_d->getSymbolGroupContext(frameIndex, &errorMessage);
if (!sg)
break;
if (!sg->assignValue(expr, value, &newValue, &errorMessage))
break;
// Update view
WatchHandler *watchHandler = manager()->watchHandler();
if (WatchData *fwd = watchHandler->findItem(expr.toLatin1())) {
fwd->setValue(newValue);
watchHandler->insertData(*fwd);
watchHandler->updateWatchers();
}
success = true;
} while (false);
if (!success) {
const QString msg = tr("Unable to assign the value '%1' to '%2': %3").arg(value, expr, errorMessage);
warning(msg);
}
}
void CdbDebugEngine::executeDebuggerCommand(const QString &command)
{
QString errorMessage;
if (!m_d->executeDebuggerCommand(command, &errorMessage))
warning(errorMessage);
}
void CdbDebugEngine::activateFrame(int frameIndex)
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << frameIndex;
if (state() != InferiorStopped) {
qWarning("WARNING %s: invoked while debuggee is running\n", Q_FUNC_INFO);
return;
}
QString errorMessage;
bool success = false;
StackHandler *stackHandler = manager()->stackHandler();
do {
WatchHandler *watchHandler = manager()->watchHandler();
const int oldIndex = stackHandler->currentIndex();
if (frameIndex >= stackHandler->stackSize()) {
errorMessage = msgStackIndexOutOfRange(frameIndex, stackHandler->stackSize());
break;
}
if (oldIndex != frameIndex)
stackHandler->setCurrentIndex(frameIndex);
const StackFrame &frame = stackHandler->currentFrame();
const bool showAssembler = !frame.isUsable();
if (showAssembler) { // Assembly code: Clean out model and force instruction mode.
watchHandler->beginCycle();
watchHandler->endCycle();
QAction *assemblerAction = theDebuggerAction(OperateByInstruction);
if (!assemblerAction->isChecked())
assemblerAction->trigger();
success = true;
break;
}
manager()->gotoLocation(frame, true);
if (oldIndex != frameIndex || m_d->m_firstActivatedFrame) {
watchHandler->beginCycle();
if (CdbSymbolGroupContext *sgc = m_d->getSymbolGroupContext(frameIndex, &errorMessage))
success = sgc->populateModelInitially(watchHandler, &errorMessage);
watchHandler->endCycle();
} else {
success = true;
}
} while (false);
if (!success) {
const QString msg = QString::fromLatin1("Internal error: activateFrame() failed for frame #%1 of %2, thread %3: %4").
arg(frameIndex).arg(stackHandler->stackSize()).arg(m_d->m_currentThreadId).arg(errorMessage);
warning(msg);
}
m_d->m_firstActivatedFrame = false;
}
void CdbDebugEngine::selectThread(int index)
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << index;
//reset location arrow
manager()->resetLocation();
ThreadsHandler *threadsHandler = manager()->threadsHandler();
threadsHandler->setCurrentThread(index);
const int newThreadId = threadsHandler->threads().at(index).id;
if (newThreadId != m_d->m_currentThreadId) {
m_d->m_currentThreadId = threadsHandler->threads().at(index).id;
m_d->updateStackTrace();
}
}
void CdbDebugEngine::attemptBreakpointSynchronization()
{
if (!m_d->m_hDebuggeeProcess) // Sometimes called from the breakpoint Window
return;
QString errorMessage;
if (!m_d->attemptBreakpointSynchronization(&errorMessage))
warning(msgFunctionFailed(Q_FUNC_INFO, errorMessage));
}
bool CdbDebugEnginePrivate::attemptBreakpointSynchronization(QString *errorMessage)
{
if (!m_hDebuggeeProcess) {
*errorMessage = QLatin1String("attemptBreakpointSynchronization() called while debugger is not running");
return false;
}
// This is called from
// 1) CreateProcessEvent with the halted engine
// 2) from the break handler, potentially while the debuggee is running
// If the debuggee is running (for which the execution status is
// no reliable indicator), we temporarily halt and have ourselves
// called again from the debug event handler.
ULONG dummy;
const bool wasRunning = !CdbCore::BreakPoint::getBreakPointCount(interfaces().debugControl, &dummy);
if (debugCDB)
qDebug() << Q_FUNC_INFO << "\n Running=" << wasRunning;
if (wasRunning) {
const HandleBreakEventMode oldMode = m_breakEventMode;
m_breakEventMode = BreakEventSyncBreakPoints;
if (!interruptInterferiorProcess(errorMessage)) {
m_breakEventMode = oldMode;
return false;
}
return true;
}
QStringList warnings;
const bool ok = synchronizeBreakPoints(interfaces().debugControl,
interfaces().debugSymbols,
manager()->breakHandler(),
errorMessage, &warnings);
if (const int warningsCount = warnings.size())
for (int w = 0; w < warningsCount; w++)
m_engine->warning(warnings.at(w));
return ok;
}
void CdbDebugEngine::fetchDisassembler(DisassemblerViewAgent *agent)
{
StackFrame frame = agent->frame();
enum { ContextLines = 40 };
bool ok = false;
QString errorMessage;
do {
// get address
QString address;
if (!frame.file.isEmpty())
address = frame.address;
if (address.isEmpty())
address = agent->address();
if (debugCDB)
qDebug() << "fetchDisassembler" << address << " Agent: " << agent->address()
<< " Frame" << frame.file << frame.line << frame.address;
if (address.isEmpty()) { // Clear window
agent->setContents(QString());
ok = true;
break;
}
if (address.startsWith(QLatin1String("0x")))
address.remove(0, 2);
const int addressFieldWith = address.size(); // For the Marker
const ULONG64 offset = address.toULongLong(&ok, 16);
if (!ok) {
errorMessage = QString::fromLatin1("Internal error: Invalid address for disassembly: '%1'.").arg(agent->address());
break;
}
QString disassembly;
QApplication::setOverrideCursor(Qt::WaitCursor);
ok = dissassemble(m_d, offset, ContextLines, ContextLines, addressFieldWith, QTextStream(&disassembly), &errorMessage);
QApplication::restoreOverrideCursor();
if (!ok)
break;
agent->setContents(disassembly);
} while (false);
if (!ok) {
agent->setContents(QString());
warning(errorMessage);
}
}
void CdbDebugEngine::fetchMemory(MemoryViewAgent *agent, QObject *token, quint64 addr, quint64 length)
{
if (!m_d->m_hDebuggeeProcess && !length)
return;
ULONG received;
QByteArray data(length, '\0');
const HRESULT hr = m_d->interfaces().debugDataSpaces->ReadVirtual(addr, data.data(), length, &received);
if (FAILED(hr)) {
warning(tr("Unable to retrieve %1 bytes of memory at 0x%2: %3").
arg(length).arg(addr, 0, 16).arg(CdbCore::msgComFailed("ReadVirtual", hr)));
return;
}
if (received < length)
data.truncate(received);
agent->addLazyData(token, addr, data);
}
void CdbDebugEngine::reloadModules()
{
}
void CdbDebugEngine::loadSymbols(const QString &moduleName)
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << moduleName;
}
void CdbDebugEngine::loadAllSymbols()
{
if (debugCDB)
qDebug() << Q_FUNC_INFO;
}
void CdbDebugEngine::requestModuleSymbols(const QString &moduleName)
{
QList<Symbol> rc;
QString errorMessage;
bool success = false;
do {
if (m_d->isDebuggeeRunning()) {
errorMessage = tr("Cannot retrieve symbols while the debuggee is running.");
break;
}
if (!getModuleSymbols(m_d->interfaces().debugSymbols, moduleName, &rc, &errorMessage))
break;
success = true;
} while (false);
if (!success)
warning(errorMessage);
m_engine->showModuleSymbols(moduleName, rc);
}
void CdbDebugEngine::reloadRegisters()
{
if (state() != InferiorStopped)
return;
const int intBase = 10;
if (debugCDB)
qDebug() << Q_FUNC_INFO << intBase;
QString errorMessage;
const Registers registers = getRegisters(m_d->interfaces().debugControl, m_d->interfaces().debugRegisters, &errorMessage, intBase);
if (registers.isEmpty() && !errorMessage.isEmpty())
warning(msgFunctionFailed("reloadRegisters" , errorMessage));
registerHandler()->setRegisters(registers);
}
void CdbDebugEngine::slotConsoleStubStarted()
{
const qint64 appPid = m_d->m_consoleStubProc.applicationPID();
if (debugCDB)
qDebug() << Q_FUNC_INFO << appPid;
// Attach to console process
QString errorMessage;
if (startAttachDebugger(appPid, AttachExternal, &errorMessage)) {
m_d->startWatchTimer();
manager()->notifyInferiorPidChanged(appPid);
} else {
QMessageBox::critical(DebuggerUISwitcher::instance()->mainWindow(), tr("Debugger Error"), errorMessage);
}
}
void CdbDebugEngine::slotConsoleStubMessage(const QString &msg, bool)
{
QMessageBox::critical(DebuggerUISwitcher::instance()->mainWindow(), tr("Debugger Error"), msg);
}
void CdbDebugEngine::slotConsoleStubTerminated()
{
exitDebugger();
}
void CdbDebugEngine::warning(const QString &msg)
{
showMessage(msg, LogWarning);
qWarning("%s\n", qPrintable(msg));
}
void CdbDebugEnginePrivate::notifyException(long code, bool fatal, const QString &message)
{
if (debugCDBExecution)
qDebug() << "notifyException code" << code << " fatal=" << fatal;
// Suppress the initial breakpoint that occurs when
// attaching to a console (If a breakpoint is encountered before startup
// is complete, see startAttachDebugger()).
switch (code) {
case winExceptionStartupCompleteTrap:
m_inferiorStartupComplete = true;
break;
case EXCEPTION_BREAKPOINT:
if (m_ignoreInitialBreakPoint && !m_inferiorStartupComplete && m_breakEventMode == BreakEventHandle) {
m_engine->showMessage(CdbDebugEngine::tr("Ignoring initial breakpoint..."));
m_breakEventMode = BreakEventIgnoreOnce;
}
break;
}
// Cannot go over crash point to execute calls.
if (fatal) {
m_dumper->disable();
m_stoppedReason = StoppedCrash;
m_stoppedMessage = message;
}
}
static int threadIndexById(const ThreadsHandler *threadsHandler, int id)
{
const QList<ThreadData> threads = threadsHandler->threads();
const int count = threads.count();
for (int i = 0; i < count; i++)
if (threads.at(i).id == id)
return i;
return -1;
}
void CdbDebugEnginePrivate::handleDebugEvent()
{
if (debugCDBExecution)
qDebug() << "handleDebugEvent mode " << m_breakEventMode
<< CdbCore::msgExecutionStatusString(executionStatus()) << " interrupt" << m_interrupted
<< " startupcomplete" << m_inferiorStartupComplete;
// restore mode and do special handling
const HandleBreakEventMode mode = m_breakEventMode;
m_breakEventMode = BreakEventHandle;
switch (mode) {
case BreakEventHandle: {
// If this is triggered by breakpoint/crash: Set state to stopping
// to avoid warnings as opposed to interrupt inferior
if (m_engine->state() != InferiorStopping)
m_engine->setState(InferiorStopping, Q_FUNC_INFO, __LINE__);
m_engine->setState(InferiorStopped, Q_FUNC_INFO, __LINE__);
m_eventThreadId = updateThreadList();
m_interruptArticifialThreadId = m_interrupted ? m_eventThreadId : -1;
// Get thread to stop and its index. If avoidable, do not use
// the artifical thread that is created when interrupting,
// use the oldest thread 0 instead.
ThreadsHandler *threadsHandler = manager()->threadsHandler();
m_currentThreadId = m_interrupted ? 0 : m_eventThreadId;
int currentThreadIndex = -1;
m_currentThreadId = -1;
if (m_interrupted) {
m_currentThreadId = 0;
currentThreadIndex = threadIndexById(threadsHandler, m_currentThreadId);
}
if (!m_interrupted || currentThreadIndex == -1) {
m_currentThreadId = m_eventThreadId;
currentThreadIndex = threadIndexById(threadsHandler, m_currentThreadId);
}
const QString msg = m_interrupted ?
CdbDebugEngine::tr("Interrupted in thread %1, current thread: %2").arg(m_interruptArticifialThreadId).arg(m_currentThreadId) :
CdbDebugEngine::tr("Stopped, current thread: %1").arg(m_currentThreadId);
m_engine->showMessage(msg);
const int threadIndex = threadIndexById(threadsHandler, m_currentThreadId);
if (threadIndex != -1)
threadsHandler->setCurrentThread(threadIndex);
updateStackTrace();
}
break;
case BreakEventIgnoreOnce:
startWatchTimer();
m_interrupted = false;
break;
case BreakEventSyncBreakPoints: {
m_interrupted = false;
// Temp stop to sync breakpoints
QString errorMessage;
attemptBreakpointSynchronization(&errorMessage);
startWatchTimer();
continueInferiorProcess(&errorMessage);
if (!errorMessage.isEmpty())
m_engine->warning(QString::fromLatin1("In handleDebugEvent: %1").arg(errorMessage));
}
break;
}
}
void CdbDebugEnginePrivate::setDebuggeeHandles(HANDLE hDebuggeeProcess, HANDLE hDebuggeeThread)
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << hDebuggeeProcess << hDebuggeeThread;
m_hDebuggeeProcess = hDebuggeeProcess;
m_hDebuggeeThread = hDebuggeeThread;
}
// Set thread in CDB engine
bool CdbDebugEnginePrivate::setCDBThreadId(unsigned long threadId, QString *errorMessage)
{
ULONG currentThreadId;
HRESULT hr = interfaces().debugSystemObjects->GetCurrentThreadId(&currentThreadId);
if (FAILED(hr)) {
*errorMessage = CdbCore::msgComFailed("GetCurrentThreadId", hr);
return false;
}
if (currentThreadId == threadId)
return true;
hr = interfaces().debugSystemObjects->SetCurrentThreadId(threadId);
if (FAILED(hr)) {
*errorMessage = QString::fromLatin1("Failed to change to from thread %1 to %2: SetCurrentThreadId() failed: %3").
arg(currentThreadId).arg(threadId).arg(CdbCore::msgDebugEngineComResult(hr));
return false;
}
const QString msg = CdbDebugEngine::tr("Changing threads: %1 -> %2").arg(currentThreadId).arg(threadId);
m_engine->showStatusMessage(msg, 500);
return true;
}
ULONG CdbDebugEnginePrivate::updateThreadList()
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << m_hDebuggeeProcess;
QList<ThreadData> threads;
ULONG currentThreadId;
QString errorMessage;
// When interrupting, an artifical thread with a breakpoint is created.
if (!CdbStackTraceContext::getThreads(interfaces(), &threads, &currentThreadId, &errorMessage))
m_engine->warning(errorMessage);
manager()->threadsHandler()->setThreads(threads);
return currentThreadId;
}
// Figure out the thread to run the dumpers in (see notes on.
// CdbDumperHelper). Avoid the artifical threads created by interrupt
// and threads that are in waitFor().
// A stricter version could only use the thread if it is the event
// thread of a step or breakpoint hit (see CdbDebugEnginePrivate::m_interrupted).
static inline unsigned long dumperThreadId(const QList<StackFrame> &frames,
unsigned long currentThread)
{
if (frames.empty())
return CdbDumperHelper::InvalidDumperCallThread;
switch (CdbCore::StackTraceContext::specialFunction(frames.at(0).from, frames.at(0).function)) {
case CdbCore::StackTraceContext::BreakPointFunction:
case CdbCore::StackTraceContext::WaitFunction:
return CdbDumperHelper::InvalidDumperCallThread;
default:
break;
}
// Check remaining frames for wait
const int waitCheckDepth = qMin(frames.size(), 5);
for (int f = 1; f < waitCheckDepth; f++) {
if (CdbCore::StackTraceContext::specialFunction(frames.at(f).from, frames.at(f).function)
== CdbCore::StackTraceContext::WaitFunction)
return CdbDumperHelper::InvalidDumperCallThread;
}
return currentThread;
}
// Format stop message with all available information.
QString CdbDebugEnginePrivate::stoppedMessage(const StackFrame *topFrame /* = 0 */) const
{
QString msg;
if (topFrame) {
if (topFrame->isUsable()) {
// Stopped at basename:line
const int lastSlashPos = topFrame->file.lastIndexOf(QLatin1Char('/'));
const QString file = lastSlashPos == -1 ? topFrame->file : topFrame->file.mid(lastSlashPos + 1);
msg = CdbDebugEngine::tr("Stopped at %1:%2 in thread %3.").
arg(file).arg(topFrame->line).arg(m_currentThreadId);
} else {
// Somewhere in assembly code.
if (topFrame->function.isEmpty()) {
msg = CdbDebugEngine::tr("Stopped at %1 in thread %2 (missing debug information).").
arg(topFrame->address).arg(m_currentThreadId);
} else {
msg = CdbDebugEngine::tr("Stopped at %1 (%2) in thread %3 (missing debug information).").
arg(topFrame->address).arg(topFrame->function).arg(m_currentThreadId);
}
} // isUsable
} else {
msg = CdbDebugEngine::tr("Stopped in thread %1 (missing debug information).").arg(m_currentThreadId);
}
if (!m_stoppedMessage.isEmpty()) {
msg += QLatin1Char(' ');
msg += m_stoppedMessage;
}
return msg;
}
void CdbDebugEnginePrivate::updateStackTrace()
{
if (debugCDB)
qDebug() << Q_FUNC_INFO;
// Create a new context
cleanStackTrace();
QString errorMessage;
m_engine->reloadRegisters();
if (!setCDBThreadId(m_currentThreadId, &errorMessage)) {
m_engine->warning(errorMessage);
return;
}
m_currentStackTrace =
CdbStackTraceContext::create(m_dumper, &errorMessage);
if (!m_currentStackTrace) {
m_engine->warning(msgFunctionFailed(Q_FUNC_INFO, errorMessage));
return;
}
// Disassembling slows things down a bit. Assembler is still available via menu.
#if 0
m_engine->reloadDisassembler(); // requires stack trace
#endif
const QList<StackFrame> stackFrames = m_currentStackTrace->stackFrames();
// find the first usable frame and select it
int current = -1;
const int count = stackFrames.count();
for (int i=0; i < count; ++i)
if (stackFrames.at(i).isUsable()) {
current = i;
break;
}
// Format stop message.
const QString stopMessage = stoppedMessage(stackFrames.isEmpty() ? static_cast<const StackFrame *>(0) : &stackFrames.front());
// Set up dumper with a thread (or invalid)
const unsigned long dumperThread = dumperThreadId(stackFrames, m_currentThreadId);
if (debugCDBExecution)
qDebug() << "updateStackTrace() current: " << m_currentThreadId << " dumper=" << dumperThread;
m_dumper->setDumperCallThread(dumperThread);
// Display frames
manager()->stackHandler()->setFrames(stackFrames);
m_firstActivatedFrame = true;
if (current >= 0) {
manager()->stackHandler()->setCurrentIndex(current);
m_engine->activateFrame(current);
} else {
// Clean out variables
manager()->watchHandler()->beginCycle();
manager()->watchHandler()->endCycle();
}
manager()->watchHandler()->updateWatchers();
// Show message after a lengthy dumper initialization
manager()->showStatusMessage(stopMessage, 15000);
}
void CdbDebugEnginePrivate::updateModules()
{
QList<Module> modules;
QString errorMessage;
if (!getModuleList(interfaces().debugSymbols, &modules, &errorMessage))
m_engine->warning(msgFunctionFailed(Q_FUNC_INFO, errorMessage));
manager()->modulesHandler()->setModules(modules);
}
static const char *dumperPrefixC = "dumper";
void CdbDebugEnginePrivate::handleModuleLoad(quint64 offset, const QString &name)
{
if (debugCDB>2)
qDebug() << Q_FUNC_INFO << "\n " << offset << name;
Module module;
// Determine module parameters by offset. The callback has almost all the
// parameters we need with the exception of 'symbolsRead'. Retrieve the
// parameters by offset as to avoid a hack like 'check last module'.
QString errorMessage;
if (getModuleByOffset(interfaces().debugSymbols, offset, &module, &errorMessage)) {
manager()->modulesHandler()->addModule(module);
} else {
m_engine->warning(errorMessage);
}
m_dumper->moduleLoadHook(name, m_hDebuggeeProcess);
}
void CdbDebugEnginePrivate::handleModuleUnload(const QString &imageName)
{
manager()->modulesHandler()->removeModule(imageName);
}
void CdbDebugEnginePrivate::handleBreakpointEvent(PDEBUG_BREAKPOINT2 pBP)
{
Q_UNUSED(pBP)
if (debugCDB)
qDebug() << Q_FUNC_INFO;
m_stoppedReason = StoppedBreakpoint;
CdbCore::BreakPoint breakpoint;
// Format message unless it is a temporary step-out breakpoint with empty expression.
QString expression;
if (breakpoint.retrieve(pBP, &expression)) {
expression = breakpoint.expression();
} else {
expression.clear();
}
if (!expression.isEmpty())
m_stoppedMessage = breakpoint.type == CdbCore::BreakPoint::Code ?
CdbDebugEngine::tr("Breakpoint: %1").arg(expression) :
CdbDebugEngine::tr("Watchpoint: %1").arg(expression);
}
void CdbDebugEngine::reloadSourceFiles()
{
}
void CdbDebugEngine::syncDebuggerPaths()
{
if (debugCDB)
qDebug() << Q_FUNC_INFO << m_d->m_options->symbolPaths << m_d->m_options->sourcePaths;
QString errorMessage;
if (!m_d->setSourcePaths(m_d->m_options->sourcePaths, &errorMessage)
|| !m_d->setSymbolPaths(m_d->m_options->symbolPaths, &errorMessage)) {
errorMessage = QString::fromLatin1("Unable to set the debugger paths: %1").arg(errorMessage);
warning(errorMessage);
}
}
unsigned CdbDebugEngine::debuggerCapabilities() const
{
return DisassemblerCapability | RegisterCapability | ShowMemoryCapability
|WatchpointCapability
|BreakOnThrowAndCatchCapability; // Sort-of: Can break on throw().
}
// Accessed by DebuggerManager
IDebuggerEngine *createCdbEngine(DebuggerManager *parent,
bool cmdLineEnabled,
QList<Core::IOptionsPage*> *opts)
{
// Create options page
QSharedPointer<CdbOptions> options(new CdbOptions);
options->fromSettings(Core::ICore::instance()->settings());
CdbOptionsPage *optionsPage = new CdbOptionsPage(options);
opts->push_back(optionsPage);
if (!cmdLineEnabled || !options->enabled)
return 0;
// Create engine
QString errorMessage;
IDebuggerEngine *engine = CdbDebugEngine::create(parent, options, &errorMessage);
if (engine) {
QObject::connect(optionsPage, SIGNAL(debuggerPathsChanged()), engine, SLOT(syncDebuggerPaths()));
} else {
optionsPage->setFailureMessage(errorMessage);
qWarning("%s\n" ,qPrintable(errorMessage));
}
return engine;
}
} // namespace Internal
} // namespace Debugger
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