debugger: rework startup logic

src/plugins/debugger/gdb/abstractgdbadapter.h

@@ -33,6 +33,8 @@
 #include <QtCore/QObject>
 #include <QtCore/QProcess>
 
+#include "gdbengine.h"
+
 namespace Debugger {
 namespace Internal {
 
@@ -48,15 +50,10 @@ class AbstractGdbAdapter : public QObject
     Q_OBJECT
 
 public:
-    AbstractGdbAdapter(QObject *parent = 0) : QObject(parent) {}
+    AbstractGdbAdapter(GdbEngine *engine, QObject *parent = 0)
+        : QObject(parent), m_engine(engine) 
+    {}
 
-    virtual void setEngine(GdbEngine *engine) { m_engine = engine; }
-    virtual void start(const QString &program, const QStringList &args,
-        QIODevice::OpenMode mode = QIODevice::ReadWrite) = 0;
-    virtual void kill() = 0;
-    virtual void terminate() = 0;
-    //virtual bool waitForStarted(int msecs = 30000) = 0;
-    virtual bool waitForFinished(int msecs = 30000) = 0;
     virtual QProcess::ProcessState state() const = 0;
     virtual QString errorString() const = 0;
     virtual QByteArray readAllStandardError() = 0;
@@ -66,18 +63,35 @@ public:
     virtual void setEnvironment(const QStringList &env) = 0;
     virtual bool isAdapter() const = 0;
 
-    virtual void attach() = 0;
+    virtual void startAdapter(const DebuggerStartParametersPtr &sp) = 0;
+    virtual void prepareInferior() = 0;
+    virtual void startInferior() = 0;
+    virtual void shutdownInferior() = 0;
+    virtual void shutdownAdapter() = 0;
     virtual void interruptInferior() = 0;
 
 signals:
+    void adapterStarted();
+    void adapterStartFailed(const QString &msg);
+    void adapterShutDown();
+    void adapterShutdownFailed(const QString &msg);
+    void adapterCrashed();
+
+    void inferiorPrepared();
+    void inferiorPreparationFailed(const QString &msg);
+    void inferiorStarted();
+    void inferiorStartFailed(const QString &msg);
+    void inferiorShutDown();
+    void inferiorShutdownFailed(const QString &msg);
+    
+    void inferiorPidChanged(qint64 pid);
+
     void error(QProcess::ProcessError);
-    void started();
     void readyReadStandardOutput();
     void readyReadStandardError();
-    void finished(int, QProcess::ExitStatus);
 
 protected:
-    GdbEngine *m_engine;
+    GdbEngine * const m_engine;
 };
 
 } // namespace Internal

src/plugins/debugger/gdb/gdb.pri

@@ -2,6 +2,7 @@ include(../../../shared/trk/trk.pri)
 
 HEADERS += \
     $$PWD/abstractgdbadapter.h \
+    $$PWD/plaingdbadapter.h \
     $$PWD/gdbmi.h \
     $$PWD/gdbengine.h \
     $$PWD/gdboptionspage.h \
@@ -14,10 +15,11 @@ SOURCES += \
     $$PWD/gdbmi.cpp \
     $$PWD/gdbengine.cpp \
     $$PWD/gdboptionspage.cpp \
-    $$PWD/trkgdbadapter.cpp \
+    $$PWD/plaingdbadapter.cpp \
     $$PWD/trkoptions.cpp \
     $$PWD/trkoptionswidget.cpp \
-    $$PWD/trkoptionspage.cpp
+    $$PWD/trkoptionspage.cpp \
+    $$PWD/trkgdbadapter.cpp
 
 FORMS +=  $$PWD/gdboptionspage.ui \
 $$PWD/trkoptionswidget.ui

src/plugins/debugger/gdb/gdbengine.h

@@ -33,11 +33,8 @@
 #include "idebuggerengine.h"
 #include "debuggermanager.h" // only for StartParameters
 #include "gdbmi.h"
-#include "abstractgdbadapter.h"
-#include "outputcollector.h"
 #include "watchutils.h"
-
-#include <consoleprocess.h>
+#include "outputcollector.h"
 
 #include <QtCore/QByteArray>
 #include <QtCore/QHash>
@@ -45,6 +42,7 @@
 #include <QtCore/QObject>
 #include <QtCore/QProcess>
 #include <QtCore/QPoint>
+#include <QtCore/QSet>
 #include <QtCore/QTextCodec>
 #include <QtCore/QTime>
 #include <QtCore/QVariant>
@@ -58,7 +56,7 @@ QT_END_NAMESPACE
 namespace Debugger {
 namespace Internal {
 
-
+class AbstractGdbAdapter;
 class DebuggerManager;
 class IDebuggerManagerAccessForEngines;
 class GdbResultRecord;
@@ -75,52 +73,14 @@ enum DebuggingHelperState
     DebuggingHelperUnavailable,
 };
 
-class PlainGdbAdapter : public AbstractGdbAdapter
-{
-public:
-    PlainGdbAdapter(QObject *parent = 0)
-        : AbstractGdbAdapter(parent)
-    {
-        connect(&m_proc, SIGNAL(error(QProcess::ProcessError)),
-            this, SIGNAL(error(QProcess::ProcessError)));
-        connect(&m_proc, SIGNAL(readyReadStandardOutput()),
-            this, SIGNAL(readyReadStandardOutput()));
-        connect(&m_proc, SIGNAL(readyReadStandardError()),
-            this, SIGNAL(readyReadStandardError()));
-        connect(&m_proc, SIGNAL(started()),
-            this, SIGNAL(started()));
-        connect(&m_proc, SIGNAL(finished(int, QProcess::ExitStatus)),
-            this, SIGNAL(finished(int, QProcess::ExitStatus)));
-    }
-
-    void start(const QString &program, const QStringList &args,
-        QIODevice::OpenMode mode) { m_proc.start(program, args, mode); }
-    void kill() { m_proc.kill(); }
-    void terminate() { m_proc.terminate(); }
-    bool waitForStarted(int msecs) { return m_proc.waitForStarted(msecs); }
-    bool waitForFinished(int msecs) { return m_proc.waitForFinished(msecs); }
-    QProcess::ProcessState state() const { return m_proc.state(); }
-    QString errorString() const { return m_proc.errorString(); }
-    QByteArray readAllStandardError() { return m_proc.readAllStandardError(); }
-    QByteArray readAllStandardOutput() { return m_proc.readAllStandardOutput(); }
-    qint64 write(const char *data) { return m_proc.write(data); }
-    void setWorkingDirectory(const QString &dir) { m_proc.setWorkingDirectory(dir); }
-    void setEnvironment(const QStringList &env) { m_proc.setEnvironment(env); }
-    bool isAdapter() const { return false; }
-    void attach();
-    void interruptInferior();
-
-private:
-    QProcess m_proc;
-};
-
 class GdbEngine : public IDebuggerEngine
 {
     Q_OBJECT
 
 public:
-    GdbEngine(DebuggerManager *parent, AbstractGdbAdapter *gdbAdapter);
+    explicit GdbEngine(DebuggerManager *parent);
     ~GdbEngine();
+    void setGdbAdapter(AbstractGdbAdapter *adapter);
 
 signals:
     void gdbInputAvailable(int channel, const QString &msg);
@@ -145,7 +105,6 @@ private:
     void shutdown();
     void setToolTipExpression(const QPoint &mousePos, TextEditor::ITextEditor *editor, int cursorPos);
     void startDebugger(const DebuggerStartParametersPtr &sp);
-    Q_SLOT void startDebugger2();
     void exitDebugger();
     void exitDebugger2();
     void detachDebugger();
@@ -217,14 +176,20 @@ public: // otherwise the Qt flag macros are unhappy
 
 
 private:
-    typedef void (GdbEngine::*GdbCommandCallback)(const GdbResultRecord &record, const QVariant &cookie);
+    typedef void (GdbEngine::*GdbCommandCallback)
+        (const GdbResultRecord &record, const QVariant &cookie);
+    typedef void (AbstractGdbAdapter::*AdapterCallback)
+        (const GdbResultRecord &record, const QVariant &cookie);
 
     struct GdbCommand
     {
-        GdbCommand() : flags(0), callback(0), callbackName(0) {}
+        GdbCommand()
+            : flags(0), callback(0), adapterCallback(0), callbackName(0)
+        {}
 
         int flags;
         GdbCommandCallback callback;
+        AdapterCallback adapterCallback;
         const char *callbackName;
         QString command;
         QVariant cookie;
@@ -235,7 +200,7 @@ private:
     // queue". resultNeeded == true increments m_pendingResults on
     // send and decrements on receipt, effectively preventing 
     // watch model updates before everything is finished.
-    void flushCommand(GdbCommand &cmd);
+    void flushCommand(const GdbCommand &cmd);
     void postCommand(const QString &command,
                      GdbCommandFlags flags,
                      GdbCommandCallback callback = 0,
@@ -245,7 +210,11 @@ private:
                      GdbCommandCallback callback = 0,
                      const char *callbackName = 0,
                      const QVariant &cookie = QVariant());
-
+    void postCommand(const QString &command,
+                     AdapterCallback callback,
+                     const char *callbackName,
+                     const QVariant &cookie = QVariant());
+    void postCommandHelper(const GdbCommand &cmd);
     void setTokenBarrier();
 
     void updateLocals();
@@ -257,25 +226,36 @@ private slots:
     void readUploadStandardOutput();
     void readUploadStandardError();
     void readDebugeeOutput(const QByteArray &data);
-    void stubStarted();
-    void stubError(const QString &msg);
     void uploadProcError(QProcess::ProcessError error);
     void emitStartFailed();
 
+    void handleAdapterStarted();
+    void handleAdapterStartFailed(const QString &msg);
+
+    void handleInferiorPrepared();
+    void handleInferiorPreparationFailed(const QString &msg);
+    void handleInferiorStarted();
+    void handleInferiorStartFailed(const QString &msg);
+    void handleInferiorShutDown();
+    void handleInferiorShutdownFailed(const QString &msg);
+
+    void handleAdapterShutDown();
+    void handleAdapterShutdownFailed(const QString &msg);
+
 private:
     int terminationIndex(const QByteArray &buffer, int &length);
     void handleResponse(const QByteArray &buff);
     void handleStart(const GdbResultRecord &response, const QVariant &);
     void handleAttach(const GdbResultRecord &, const QVariant &);
-    void handleStubAttached(const GdbResultRecord &, const QVariant &);
     void handleAqcuiredInferior();
-    void handleAsyncOutput2(const GdbResultRecord &, const QVariant &cookie);
-    void handleAsyncOutput2(const GdbMi &data);
     void handleAsyncOutput(const GdbMi &data);
+    void handleStop1(const GdbResultRecord &, const QVariant &cookie);
+    void handleStop2(const GdbResultRecord &, const QVariant &cookie);
+    void handleStop2(const GdbMi &data);
     void handleResultRecord(const GdbResultRecord &response);
     void handleFileExecAndSymbols(const GdbResultRecord &response, const QVariant &);
     void handleExecContinue(const GdbResultRecord &response, const QVariant &);
-    void handleExecRun(const GdbResultRecord &response, const QVariant &);
+    //void handleExecRun(const GdbResultRecord &response, const QVariant &);
     void handleExecJumpToLine(const GdbResultRecord &response, const QVariant &);
     void handleExecRunToFunction(const GdbResultRecord &response, const QVariant &);
     void handleInfoShared(const GdbResultRecord &response, const QVariant &);
@@ -306,7 +286,6 @@ private:
         QList<WatchData> *insertions);
     const bool m_dumperInjectionLoad;
 
-    OutputCollector m_outputCollector;
     QTextCodec *m_outputCodec;
     QTextCodec::ConverterState m_outputCodecState;
 
@@ -315,8 +294,6 @@ private:
     AbstractGdbAdapter *m_gdbAdapter;
     QProcess m_uploadProc;
 
-    Core::Utils::ConsoleProcess m_stubProc;
-
     QHash<int, GdbCommand> m_cookieForToken;
     QHash<int, QByteArray> m_customOutputForToken;
 
@@ -448,7 +425,11 @@ private:
     QString m_currentFrame;
     QMap<QString, QString> m_varToType;
 
-    bool m_autoContinue;
+    typedef void (GdbEngine::*Continuation)();
+    // function called after all previous responses have been received
+    Continuation m_continuationAfterDone;
+    void handleInitialBreakpointsSet();
+
     bool m_waitingForFirstBreakpointToBeHit;
     bool m_modulesListOutdated;
 
@@ -458,6 +439,8 @@ private:
     IDebuggerManagerAccessForEngines * const qq;
     DebuggerStartParametersPtr m_startParameters;
     // make sure to re-initialize new members in initializeVariables();
+public:
+    OutputCollector m_outputCollector;
 };
 
 } // namespace Internal

src/plugins/debugger/gdb/plaingdbadapter.cpp

+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 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 "plaingdbadapter.h"
+
+#include "debuggeractions.h"
+#include "gdbengine.h"
+#include "procinterrupt.h"
+
+#include <utils/qtcassert.h>
+#include <coreplugin/icore.h>
+
+#include <QtCore/QFileInfo>
+#include <QtGui/QMessageBox>
+
+namespace Debugger {
+namespace Internal {
+
+#define STRINGIFY_INTERNAL(x) #x
+#define STRINGIFY(x) STRINGIFY_INTERNAL(x)
+#define CB(callback) \
+    static_cast<GdbEngine::AdapterCallback>(&PlainGdbAdapter::callback), \
+    STRINGIFY(callback)
+
+///////////////////////////////////////////////////////////////////////
+//
+// PlainGdbAdapter
+//
+///////////////////////////////////////////////////////////////////////
+
+PlainGdbAdapter::PlainGdbAdapter(GdbEngine *engine, QObject *parent)
+    : AbstractGdbAdapter(engine, parent)
+{
+    connect(&m_gdbProc, SIGNAL(error(QProcess::ProcessError)),
+        this, SIGNAL(error(QProcess::ProcessError)));
+    connect(&m_gdbProc, SIGNAL(readyReadStandardOutput()),
+        this, SIGNAL(readyReadStandardOutput()));
+    connect(&m_gdbProc, SIGNAL(readyReadStandardError()),
+        this, SIGNAL(readyReadStandardError()));
+    connect(&m_gdbProc, SIGNAL(started()),
+        this, SIGNAL(adapterStarted()));
+    connect(&m_gdbProc, SIGNAL(finished(int, QProcess::ExitStatus)),
+        this, SLOT(handleFinished(int, QProcess::ExitStatus)));
+
+    m_stubProc.setMode(Core::Utils::ConsoleProcess::Debug);
+#ifdef Q_OS_UNIX
+    m_stubProc.setSettings(Core::ICore::instance()->settings());
+#endif
+
+    connect(&m_stubProc, SIGNAL(processError(QString)),
+        this, SLOT(stubError(QString)));
+    connect(&m_stubProc, SIGNAL(processStarted()),
+        this, SLOT(stubStarted()));
+// FIXME:
+//    connect(&m_stubProc, SIGNAL(wrapperStopped()),
+//        m_manager, SLOT(exitDebugger()));
+}
+
+void PlainGdbAdapter::startAdapter(const DebuggerStartParametersPtr &sp)
+{
+    debugMessage(_("TRYING TO START ADAPTER"));
+    m_startParameters = sp;
+
+    QStringList gdbArgs;
+    gdbArgs.prepend(_("mi"));
+    gdbArgs.prepend(_("-i"));
+
+    if (m_startParameters->useTerminal) {
+        m_stubProc.stop(); // We leave the console open, so recycle it now.
+
+        m_stubProc.setWorkingDirectory(m_startParameters->workingDir);
+        m_stubProc.setEnvironment(m_startParameters->environment);
+        if (!m_stubProc.start(m_startParameters->executable,
+                             m_startParameters->processArgs)) {
+            // Error message for user is delivered via a signal.
+            emitAdapterStartFailed(QString());
+            return;
+        }
+    } else {
+        if (!m_engine->m_outputCollector.listen()) {
+            emitAdapterStartFailed(tr("Cannot set up communication with child process: %1")
+                    .arg(m_engine->m_outputCollector.errorString()));
+            return;
+        }
+        gdbArgs.prepend(_("--tty=") + m_engine->m_outputCollector.serverName());
+
+        if (!m_startParameters->workingDir.isEmpty())
+            setWorkingDirectory(m_startParameters->workingDir);
+        if (!m_startParameters->environment.isEmpty())
+            setEnvironment(m_startParameters->environment);
+    }
+
+    QString location = theDebuggerStringSetting(GdbLocation);
+    //showStatusMessage(tr("Starting Debugger: ") + loc + _c(' ') + gdbArgs.join(_(" ")));
+    m_gdbProc.start(location, gdbArgs);
+}
+
+void PlainGdbAdapter::prepareInferior()
+{
+    if (!m_startParameters->processArgs.isEmpty())
+        m_engine->postCommand(_("-exec-arguments ") + m_startParameters->processArgs.join(_(" ")));
+    QFileInfo fi(m_engine->startParameters().executable);
+    m_engine->postCommand(_("-file-exec-and-symbols \"%1\"").arg(fi.absoluteFilePath()),
+        CB(handleFileExecAndSymbols));
+}
+
+void PlainGdbAdapter::handleFileExecAndSymbols(const GdbResultRecord &response, const QVariant &)
+{
+    if (response.resultClass == GdbResultDone) {
+        //m_breakHandler->clearBreakMarkers();
+        emit inferiorPrepared();
+    } else if (response.resultClass == GdbResultError) {
+        QString msg = tr("Starting executable failed:\n") +
+            __(response.data.findChild("msg").data());
+        emit inferiorPreparationFailed(msg);
+    }
+}
+
+void PlainGdbAdapter::startInferior()
+{
+    m_engine->postCommand(_("-exec-run"), CB(handleExecRun));
+/*
+    #ifdef Q_OS_MAC        
+    m_engine->postCommand(_("sharedlibrary apply-load-rules all"));
+    // On MacOS, breaking in at the entry point wreaks havoc.
+    m_engine->postCommand(_("tbreak main"));
+    m_waitingForFirstBreakpointToBeHit = true;
+    m_engine->postCommand(_("-exec-run"), CB(handleExecRun));
+    #else
+// FIXME:
+//    if (!m_dumperInjectionLoad)
+//        m_engine->postCommand(_("set auto-solib-add off"));
+    m_engine->postCommand(_("info target"), CB(handleInfoTarget));
+    #endif
+*/
+}
+
+void PlainGdbAdapter::handleInfoTarget(const GdbResultRecord &response, const QVariant &)
+{
+#if defined(Q_OS_MAC)
+    Q_UNUSED(response)
+#else
+    if (response.resultClass == GdbResultDone) {
+        // [some leading stdout here]
+        // >&"        Entry point: 0x80831f0  0x08048134 - 0x08048147 is .interp\n"
+        // [some trailing stdout here]
+        QString msg = _(response.data.findChild("consolestreamoutput").data());
+        QRegExp needle(_("\\bEntry point: (0x[0-9a-f]+)\\b"));
+        if (needle.indexIn(msg) != -1) {
+            //debugMessage(_("STREAM: ") + msg + " " + needle.cap(1));
+            m_engine->postCommand(_("tbreak *") + needle.cap(1));
+// FIXME:            m_waitingForFirstBreakpointToBeHit = true;
+            m_engine->postCommand(_("-exec-run"), CB(handleExecRun));
+        } else {
+            debugMessage(_("PARSING START ADDRESS FAILED: ") + msg);
+            emit inferiorStartFailed(_("Parsing start address failed"));
+        }
+    } else if (response.resultClass == GdbResultError) {
+        debugMessage(_("FETCHING START ADDRESS FAILED: " + response.toString()));
+        emit inferiorStartFailed(_("Fetching start address failed"));
+    }
+#endif
+}
+
+void PlainGdbAdapter::handleExecRun(const GdbResultRecord &response, const QVariant &)
+{
+    if (response.resultClass == GdbResultRunning) {
+        emit inferiorStarted();
+    } else {
+        QTC_ASSERT(response.resultClass == GdbResultError, /**/);
+        const QByteArray &msg = response.data.findChild("msg").data();
+        //QTC_ASSERT(status() == DebuggerInferiorRunning, /**/);
+        //interruptInferior();
+        emit inferiorStartFailed(msg);
+    }
+}
+
+void PlainGdbAdapter::interruptInferior()
+{
+    debugMessage(_("TRYING TO INTERUPT INFERIOR"));
+    if (m_engine->startMode() == StartRemote) {
+        m_engine->postCommand(_("-exec-interrupt"));
+        return;
+    }
+
+    const qint64 attachedPID = m_engine->inferiorPid();
+    if (attachedPID <= 0) {
+        debugMessage(_("TRYING TO INTERRUPT INFERIOR BEFORE PID WAS OBTAINED"));
+        return;
+    }
+
+    if (!interruptProcess(attachedPID))
+        debugMessage(_("CANNOT INTERRUPT %1").arg(attachedPID));
+}
+
+void PlainGdbAdapter::shutdownAdapter()
+{
+    m_engine->postCommand(_("-gdb-exit"), CB(handleExit));
+    // 20s can easily happen when loading webkit debug information
+    if (!m_gdbProc.waitForFinished(20000)) {
+        debugMessage(_("FORCING TERMINATION: %1")
+            .arg(state()));
+        m_gdbProc.terminate();
+        m_gdbProc.waitForFinished(20000);
+    }
+
+    if (state() != QProcess::NotRunning) {
+        debugMessage(_("PROBLEM STOPPING DEBUGGER: STATE %1")
+            .arg(state()));
+        m_gdbProc.kill();
+    }
+}
+
+void PlainGdbAdapter::handleExit(const GdbResultRecord &response, const QVariant &)
+{
+    if (response.resultClass == GdbResultDone) {
+        emit adapterShutDown();
+    } else if (response.resultClass == GdbResultError) {
+        QString msg = tr("Gdb process could not be stopped:\n") +
+            __(response.data.findChild("msg").data());
+        emit adapterShutdownFailed(msg);
+    }
+}
+
+void PlainGdbAdapter::handleFinished(int, QProcess::ExitStatus)
+{
+     debugMessage(_("GDB PROESS FINISHED"));
+}
+
+void PlainGdbAdapter::shutdownInferior()
+{
+    m_engine->postCommand(_("kill"));
+}
+
+void PlainGdbAdapter::stubStarted()
+{
+    const qint64 attachedPID = m_stubProc.applicationPID();
+    emit inferiorPidChanged(attachedPID);
+    m_engine->postCommand(_("attach %1").arg(attachedPID), CB(handleStubAttached));
+}
+
+void PlainGdbAdapter::handleStubAttached(const GdbResultRecord &, const QVariant &)
+{
+    qDebug() << "STUB ATTACHED, FIXME";
+    //qq->notifyInferiorStopped();
+    //handleAqcuiredInferior();
+    // FIXME: m_autoContinue = true;
+}
+
+void PlainGdbAdapter::stubError(const QString &msg)
+{
+    QMessageBox::critical(m_engine->mainWindow(), tr("Debugger Error"), msg);
+}
+
+void PlainGdbAdapter::emitAdapterStartFailed(const QString &msg)
+{
+    //  QMessageBox::critical(mainWindow(), tr("Debugger Startup Failure"),
+    //    tr("Cannot start debugger: %1").arg(m_gdbAdapter->errorString()));
+    m_stubProc.blockSignals(true);
+    m_stubProc.stop();
+    m_stubProc.blockSignals(false);
+    emit adapterStartFailed(msg);
+}
+} // namespace Internal
+} // namespace Debugger

src/plugins/debugger/gdb/plaingdbadapter.h

+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**