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Get attaching to a crashed Windows process right (CDB).

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Handle  the 2nd parameter correctly as a event id
to be used for a handshake. Introduce a special mode
when attaching to crashed processes.
Code cleanup, pass StartParameters along to startDebugger.
This commit is contained in:
Friedemann Kleint
2009-05-26 16:27:24 +02:00
parent af4fcde1c2
commit 09380afe90
14 changed files with 79 additions and 49 deletions
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2
src/plugins/debugger/Debugger.pluginspec
View File

@@ -30,6 +30,6 @@ will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.</license>
<argument name="-disable-sdb">Disable Qt Script debugger engine</argument>
<argument name="-disable-tcf">Disable Tcf debugger engine</argument>
<argument name="-debug" parameter="process-id">Attach to Process-Id</argument>
<argument name="-winexception" parameter="exception-code">Exception code</argument>
<argument name="-wincrashevent" parameter="event-handle">Event handle used for attaching to crashed processes</argument>
</argumentList>
</plugin>

38
src/plugins/debugger/cdb/cdbdebugengine.cpp
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@@ -526,15 +526,16 @@ void CdbDebugEnginePrivate::clearDisplay()
m_debuggerManagerAccess->registerHandler()->removeAll();
}
bool CdbDebugEngine::startDebugger()
bool CdbDebugEngine::startDebugger(const QSharedPointer<DebuggerStartParameters> &sp)
{
m_d->clearDisplay();
const DebuggerStartMode mode = m_d->m_debuggerManager->startMode();
const QSharedPointer<DebuggerStartParameters> sp = m_d->m_debuggerManager->startParameters();
// Figure out dumper. @TODO: same in gdb...
const QString dumperLibName = QDir::toNativeSeparators(m_d->m_debuggerManagerAccess->qtDumperLibraryName());
bool dumperEnabled = mode != AttachCore && !dumperLibName.isEmpty()
bool dumperEnabled = mode != AttachCore
&& mode != AttachCrashedExternal
&& !dumperLibName.isEmpty()
&& m_d->m_debuggerManagerAccess->qtDumperLibraryEnabled();
if (dumperEnabled) {
const QFileInfo fi(dumperLibName);
@@ -552,8 +553,9 @@ bool CdbDebugEngine::startDebugger()
m_d->clearForRun();
switch (mode) {
case AttachExternal:
rc = startAttachDebugger(sp->attachPID, &errorMessage);
needWatchTimer = true;
case AttachCrashedExternal:
rc = startAttachDebugger(sp->attachPID, mode, &errorMessage);
needWatchTimer = true; // Fetch away module load, etc. even if crashed
break;
case StartInternal:
case StartExternal:
@@ -585,7 +587,7 @@ bool CdbDebugEngine::startDebugger()
return rc;
}
bool CdbDebugEngine::startAttachDebugger(qint64 pid, QString *errorMessage)
bool CdbDebugEngine::startAttachDebugger(qint64 pid, DebuggerStartMode sm, QString *errorMessage)
{
// Need to attrach invasively, otherwise, no notification signals
// for for CreateProcess/ExitProcess occur.
@@ -597,7 +599,7 @@ bool CdbDebugEngine::startAttachDebugger(qint64 pid, QString *errorMessage)
*errorMessage = tr("Attaching to a process failed for process id %1: %2").arg(pid).arg(msgDebugEngineComResult(hr));
return false;
} else {
m_d->m_mode = AttachExternal;
m_d->m_mode = sm;
}
return true;
}
@@ -679,6 +681,17 @@ void CdbDebugEnginePrivate::processCreatedAttached(ULONG64 processHandle, ULONG6
m_engine->executeDebuggerCommand(QLatin1String("bc"));
if (m_debuggerManagerAccess->breakHandler()->hasPendingBreakpoints())
m_engine->attemptBreakpointSynchronization();
// Attaching to crashed: This handshake (signalling an event) is required for
// the exception to be delivered to the debugger
if (m_mode == AttachCrashedExternal) {
const QString crashParameter = m_debuggerManager->startParameters()->crashParameter;
if (!crashParameter.isEmpty()) {
ULONG64 evtNr = crashParameter.toULongLong();
const HRESULT hr = m_cif.debugControl->SetNotifyEventHandle(evtNr);
if (FAILED(hr))
m_engine->warning(QString::fromLatin1("Handshake failed on event #%1: %2").arg(evtNr).arg(msgComFailed("SetNotifyEventHandle", hr)));
}
}
if (debugCDB)
qDebug() << Q_FUNC_INFO << '\n' << executionStatusString(m_cif.debugControl);
}
@@ -707,7 +720,8 @@ void CdbDebugEnginePrivate::endDebugging(EndDebuggingMode em)
Action action;
switch (em) {
case EndDebuggingAuto:
action = m_mode == AttachExternal ? Detach : Terminate;
action = (m_mode == AttachExternal || m_mode == AttachCrashedExternal) ?
Detach : Terminate;
break;
case EndDebuggingDetach:
action = Detach;
@@ -1417,7 +1431,7 @@ void CdbDebugEngine::slotConsoleStubStarted()
qDebug() << Q_FUNC_INFO << appPid;
// Attach to console process
QString errorMessage;
if (startAttachDebugger(appPid, &errorMessage)) {
if (startAttachDebugger(appPid, AttachExternal, &errorMessage)) {
startWatchTimer();
m_d->m_debuggerManagerAccess->notifyInferiorPidChanged(appPid);
m_d->m_debuggerManagerAccess->notifyInferiorRunning();
@@ -1436,6 +1450,12 @@ void CdbDebugEngine::slotConsoleStubTerminated()
exitDebugger();
}
void CdbDebugEngine::slotAttachedCrashed()
{
m_d->m_debuggerManagerAccess->showDebuggerOutput("A","A");
m_d->handleDebugEvent();
}
void CdbDebugEngine::warning(const QString &w)
{
static const QString prefix = QLatin1String("warning:");

5
src/plugins/debugger/cdb/cdbdebugengine.h
View File

@@ -61,7 +61,7 @@ public:
virtual void shutdown();
virtual void setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor, int cursorPos);
virtual bool startDebugger();
virtual bool startDebugger(const QSharedPointer<DebuggerStartParameters> &startParameters);
virtual void exitDebugger();
virtual void detachDebugger();
virtual void updateWatchModel();
@@ -107,10 +107,11 @@ private slots:
void slotConsoleStubStarted();
void slotConsoleStubError(const QString &msg);
void slotConsoleStubTerminated();
void slotAttachedCrashed();
void warning(const QString &w);
private:
bool startAttachDebugger(qint64 pid, QString *errorMessage);
bool startAttachDebugger(qint64 pid, DebuggerStartMode sm, QString *errorMessage);
bool startDebuggerWithExecutable(DebuggerStartMode sm, QString *errorMessage);
void startWatchTimer();
void killWatchTimer();

4
src/plugins/debugger/debuggermanager.cpp
View File

@@ -192,6 +192,7 @@ void DebuggerStartParameters::clear()
buildDir.clear();
attachPID = -1;
useTerminal = false;
crashParameter.clear();
remoteChannel.clear();
remoteArchitecture.clear();
serverStartScript.clear();
@@ -892,6 +893,7 @@ void DebuggerManager::startNewDebugger(DebuggerRunControl *runControl, const QSh
QString settingsIdHint;
switch (startMode()) {
case AttachExternal:
case AttachCrashedExternal:
m_engine = determineDebuggerEngine(m_startParameters->attachPID, &errorMessage);
break;
case AttachTcf:
@@ -919,7 +921,7 @@ void DebuggerManager::startNewDebugger(DebuggerRunControl *runControl, const QSh
setBusyCursor(false);
setStatus(DebuggerProcessStartingUp);
if (!m_engine->startDebugger()) {
if (!m_engine->startDebugger(m_startParameters)) {
setStatus(DebuggerProcessNotReady);
debuggingFinished();
return;

4
src/plugins/debugger/debuggermanager.h
View File

@@ -120,7 +120,8 @@ enum DebuggerStartMode
{
StartInternal, // Start current start project's binary
StartExternal, // Start binary found in file system
AttachExternal, // Attach to running process
AttachExternal, // Attach to running process by process id
AttachCrashedExternal, // Attach to crashed process by process id
AttachTcf, // Attach to a running Target Communication Framework agent
AttachCore, // Attach to a core file
StartRemote // Start and attach to a remote process
@@ -138,6 +139,7 @@ struct DebuggerStartParameters {
QString buildDir;
qint64 attachPID;
bool useTerminal;
QString crashParameter; // for AttachCrashedExternal
// for remote debugging
QString remoteChannel;
QString remoteArchitecture;

31
src/plugins/debugger/debuggerplugin.cpp
View File

@@ -404,7 +404,7 @@ DebuggerPlugin::DebuggerPlugin()
m_gdbRunningContext(0),
m_cmdLineEnabledEngines(AllEngineTypes),
m_cmdLineAttachPid(0),
m_cmdLineWinException(0),
m_cmdLineWinCrashEvent(0),
m_toggleLockedAction(0)
{}
@@ -465,15 +465,16 @@ bool DebuggerPlugin::parseArgument(QStringList::const_iterator &it,
}
return true;
}
// -winexception <exception code>, passed in by Windows System
if (*it == QLatin1String("-winexception")) {
// -wincrashevent <event-handle>. A handle used for
// a handshake when attaching to a crashed Windows process.
if (*it == QLatin1String("-wincrashevent")) {
++it;
if (it == cend) {
*errorMessage = msgParameterMissing(*it);
return false;
}
bool ok;
m_cmdLineWinException = it->toULong(&ok);
m_cmdLineWinCrashEvent = it->toULongLong(&ok);
if (!ok) {
*errorMessage = msgInvalidNumericParameter(option, *it);
return false;
@@ -515,8 +516,12 @@ bool DebuggerPlugin::parseArguments(const QStringList &args, QString *errorMessa
bool DebuggerPlugin::initialize(const QStringList &arguments, QString *errorMessage)
{
if (!parseArguments(arguments, errorMessage))
return false;
// Do not fail the whole plugin if something goes wrong here
if (!parseArguments(arguments, errorMessage)) {
*errorMessage = tr("Error evaluating command line arguments: %1").arg(*errorMessage);
qWarning("%s\n", qPrintable(*errorMessage));
errorMessage->clear();
}
m_manager = new DebuggerManager;
const QList<Core::IOptionsPage *> engineOptionPages = m_manager->initializeEngines(m_cmdLineEnabledEngines);
@@ -915,11 +920,9 @@ void DebuggerPlugin::extensionsInitialized()
void DebuggerPlugin::attachCmdLinePid()
{
const QString msg = m_cmdLineWinException ?
tr("Attaching to PID %1 (exception code %2).").arg(m_cmdLineAttachPid).arg(m_cmdLineWinException) :
tr("Attaching to PID %1.").arg(m_cmdLineAttachPid);
m_manager->showStatusMessage(msg);
attachExternalApplication(m_cmdLineAttachPid);
m_manager->showStatusMessage(tr("Attaching to PID %1.").arg(m_cmdLineAttachPid));
const QString crashParameter = m_cmdLineWinCrashEvent ? QString::number(m_cmdLineWinCrashEvent) : QString();
attachExternalApplication(m_cmdLineAttachPid, crashParameter);
}
/*! Activates the previous mode when the current mode is the debug mode. */
@@ -1215,7 +1218,7 @@ void DebuggerPlugin::attachExternalApplication()
attachExternalApplication(dlg.attachPID());
}
void DebuggerPlugin::attachExternalApplication(qint64 pid)
void DebuggerPlugin::attachExternalApplication(qint64 pid, const QString &crashParameter)
{
if (pid == 0) {
QMessageBox::warning(m_manager->mainWindow(), tr("Warning"), tr("Cannot attach to PID 0"));
@@ -1223,9 +1226,11 @@ void DebuggerPlugin::attachExternalApplication(qint64 pid)
}
const QSharedPointer<DebuggerStartParameters> sp(new DebuggerStartParameters);
sp->attachPID = pid;
sp->crashParameter = crashParameter;
const DebuggerStartMode dsm = crashParameter.isEmpty() ? AttachExternal : AttachCrashedExternal;
QSharedPointer<RunConfiguration> rc = activeRunConfiguration();
if (RunControl *runControl = m_debuggerRunner
->run(rc, ProjectExplorer::Constants::DEBUGMODE, sp, AttachExternal))
->run(rc, ProjectExplorer::Constants::DEBUGMODE, sp, dsm))
runControl->start();
}

6
src/plugins/debugger/debuggerplugin.h
View File

@@ -115,7 +115,7 @@ private:
inline bool parseArgument(QStringList::const_iterator &it,
const QStringList::const_iterator& end,
QString *errorMessage);
void attachExternalApplication(qint64 pid);
void attachExternalApplication(qint64 pid, const QString &crashParameter = QString());
friend class DebuggerManager;
friend class GdbOptionPage;
@@ -131,8 +131,8 @@ private:
int m_gdbRunningContext;
unsigned m_cmdLineEnabledEngines;
quint64 m_cmdLineAttachPid;
// Exception that crashed an app passed on by Windows
unsigned long m_cmdLineWinException;
// Event handle for attaching to crashed Windows processes.
quint64 m_cmdLineWinCrashEvent;
QAction *m_toggleLockedAction;
QAction *m_startExternalAction;

10
src/plugins/debugger/gdb/gdbengine.cpp
View File

@@ -1327,7 +1327,7 @@ void GdbEngine::exitDebugger()
qDebug() << "STATUS ON EXITDEBUGGER:" << q->status());
interruptInferior();
}
if (q->startMode() == AttachExternal)
if (q->startMode() == AttachExternal || q->startMode() == AttachCrashedExternal)
postCommand(_("detach"));
else
postCommand(_("kill"));
@@ -1355,7 +1355,7 @@ int GdbEngine::currentFrame() const
return qq->stackHandler()->currentIndex();
}
bool GdbEngine::startDebugger()
bool GdbEngine::startDebugger(const QSharedPointer<DebuggerStartParameters> &sp)
{
debugMessage(DebuggerSettings::instance()->dump());
QStringList gdbArgs;
@@ -1369,9 +1369,7 @@ bool GdbEngine::startDebugger()
gdbArgs.prepend(_("mi"));
gdbArgs.prepend(_("-i"));
const QSharedPointer<DebuggerStartParameters> sp = q->startParameters();
if (q->startMode() == AttachCore || q->startMode() == AttachExternal) {
if (q->startMode() == AttachCore || q->startMode() == AttachExternal || q->startMode() == AttachCrashedExternal) {
// nothing to do
} else if (q->startMode() == StartRemote) {
// Start the remote server
@@ -1510,7 +1508,7 @@ bool GdbEngine::startDebugger()
}
}
if (q->startMode() == AttachExternal) {
if (q->startMode() == AttachExternal || q->startMode() == AttachCrashedExternal) {
postCommand(_("attach %1").arg(sp->attachPID), CB(handleAttach));
qq->breakHandler()->removeAllBreakpoints();
} else if (q->startMode() == AttachCore) {

2
src/plugins/debugger/gdb/gdbengine.h
View File

@@ -97,7 +97,7 @@ private:
void shutdown();
void setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor, int cursorPos);
bool startDebugger();
bool startDebugger(const QSharedPointer<DebuggerStartParameters> &sp);
void exitDebugger();
void detachDebugger();

4
src/plugins/debugger/idebuggerengine.h
View File

@@ -32,6 +32,7 @@
#include <QtCore/QObject>
#include <QtCore/QList>
#include <QtCore/QSharedPointer>
QT_BEGIN_NAMESPACE
class QPoint;
@@ -46,6 +47,7 @@ namespace Debugger {
namespace Internal {
class Symbol;
struct DebuggerStartParameters;
class IDebuggerEngine : public QObject
{
@@ -54,7 +56,7 @@ public:
virtual void shutdown() = 0;
virtual void setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor, int cursorPos) = 0;
virtual bool startDebugger() = 0;
virtual bool startDebugger(const QSharedPointer<DebuggerStartParameters> &startParameters) = 0;
virtual void exitDebugger() = 0;
virtual void detachDebugger() {}
virtual void updateWatchModel() = 0;

4
src/plugins/debugger/script/scriptengine.cpp
View File

@@ -219,12 +219,12 @@ void ScriptEngine::exitDebugger()
qq->notifyInferiorExited();
}
bool ScriptEngine::startDebugger()
bool ScriptEngine::startDebugger(const QSharedPointer<DebuggerStartParameters> &sp)
{
m_stopped = false;
m_stopOnNextLine = false;
m_scriptEngine->abortEvaluation();
const QSharedPointer<DebuggerStartParameters> sp = q->startParameters();
QFileInfo fi(sp->executable);
m_scriptFileName = fi.absoluteFilePath();
QFile scriptFile(m_scriptFileName);

3
src/plugins/debugger/script/scriptengine.h
View File

@@ -76,7 +76,8 @@ private:
void shutdown();
void setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor, int cursorPos);
bool startDebugger();
bool startDebugger(const QSharedPointer<DebuggerStartParameters> &sp);
void exitDebugger();
void continueInferior();

3
src/plugins/debugger/tcf/tcfengine.cpp
View File

@@ -221,10 +221,9 @@ void TcfEngine::exitDebugger()
qq->notifyInferiorExited();
}
bool TcfEngine::startDebugger()
bool TcfEngine::startDebugger(const QSharedPointer<DebuggerStartParameters> &sp)
{
qq->notifyInferiorRunningRequested();
const QSharedPointer<DebuggerStartParameters> sp = qq->startParameters();
const int pos = sp->remoteChannel.indexOf(QLatin1Char(':'));
const QString host = sp->remoteChannel.left(pos);
const quint16 port = sp->remoteChannel.mid(pos + 1).toInt();

2
src/plugins/debugger/tcf/tcfengine.h
View File

@@ -82,7 +82,7 @@ private:
void shutdown();
void setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor, int cursorPos);
bool startDebugger();
bool startDebugger(const QSharedPointer<DebuggerStartParameters> &sp);
void exitDebugger();
void continueInferior();