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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "lldbenginehost.h"
#include "debuggerstartparameters.h"
#include "debuggeractions.h"
#include "debuggerconstants.h"
#include "debuggerdialogs.h"
#include "debuggerplugin.h"
#include "debuggerstringutils.h"
#include "breakhandler.h"
#include "breakpoint.h"
#include "moduleshandler.h"
#include "registerhandler.h"
#include "stackhandler.h"
#include "watchhandler.h"
#include "watchutils.h"
#include "threadshandler.h"
#include "disassembleragent.h"
#include "memoryagent.h"
#include <coreplugin/icore.h>
#include <utils/qtcassert.h>
#include <QDebug>
#include <QProcess>
#include <QFileInfo>
#include <QThread>
#include <QCoreApplication>
namespace Debugger {
namespace Internal {
SshIODevice::SshIODevice(QSsh::SshRemoteProcessRunner *r)
: runner(r)
, buckethead(0)
{
setOpenMode(QIODevice::ReadWrite | QIODevice::Unbuffered);
connect (runner, SIGNAL(processStarted()), this, SLOT(processStarted()));
connect(runner, SIGNAL(readyReadStandardOutput()), this, SLOT(outputAvailable()));
connect(runner, SIGNAL(readyReadStandardError()), this, SLOT(errorOutputAvailable()));
}
SshIODevice::~SshIODevice()
{
delete runner;
}
qint64 SshIODevice::bytesAvailable () const
{
qint64 r = QIODevice::bytesAvailable();
foreach (const QByteArray &bucket, buckets)
r += bucket.size();
r-= buckethead;
return r;
}
qint64 SshIODevice::writeData (const char * data, qint64 maxSize)
{
if (proc == 0) {
startupbuffer += QByteArray::fromRawData(data, maxSize);
return maxSize;
}
proc->write(data, maxSize);
return maxSize;
}
qint64 SshIODevice::readData (char * data, qint64 maxSize)
{
if (proc == 0)
return 0;
qint64 size = maxSize;
while (size > 0) {
if (!buckets.size()) {
return maxSize - size;
}
QByteArray &bucket = buckets.head();
if ((size + buckethead) >= bucket.size()) {
int d = bucket.size() - buckethead;
memcpy(data, bucket.data() + buckethead, d);
data += d;
size -= d;
buckets.dequeue();
buckethead = 0;
} else {
memcpy(data, bucket.data() + buckethead, size);
data += size;
buckethead += size;
size = 0;
}
}
return maxSize - size;
}
void SshIODevice::processStarted()
{
runner->writeDataToProcess(startupbuffer);
}
void SshIODevice::outputAvailable()
{
buckets.enqueue(runner->readAllStandardOutput());
emit readyRead();
}
void SshIODevice::errorOutputAvailable()
{
fprintf(stderr, "%s", runner->readAllStandardError().data());
}
LldbEngineHost::LldbEngineHost(const DebuggerStartParameters &startParameters)
:IPCEngineHost(startParameters), m_ssh(0)
{
showMessage(QLatin1String("setting up coms"));
setObjectName(QLatin1String("LLDBEngine"));
if (startParameters.startMode == StartRemoteEngine)
{
m_guestProcess = 0;
QSsh::SshRemoteProcessRunner * const runner = new QSsh::SshRemoteProcessRunner;
connect (runner, SIGNAL(connectionError(QSsh::SshError)),
this, SLOT(sshConnectionError(QSsh::SshError)));
runner->run(startParameters.serverStartScript.toUtf8(), startParameters.connParams);
setGuestDevice(new SshIODevice(runner));
} else {
m_guestProcess = new QProcess(this);
connect(m_guestProcess, SIGNAL(finished(int,QProcess::ExitStatus)),
this, SLOT(finished(int,QProcess::ExitStatus)));
connect(m_guestProcess, SIGNAL(readyReadStandardError()), this,
SLOT(stderrReady()));
QString a = Core::ICore::resourcePath() + QLatin1String("/qtcreator-lldb");
if(getenv("QTC_LLDB_GUEST") != 0)
a = QString::fromLocal8Bit(getenv("QTC_LLDB_GUEST"));
showStatusMessage(QString(QLatin1String("starting %1")).arg(a));
m_guestProcess->start(a, QStringList(), QIODevice::ReadWrite | QIODevice::Unbuffered);
m_guestProcess->setReadChannel(QProcess::StandardOutput);
if (!m_guestProcess->waitForStarted()) {
showStatusMessage(tr("qtcreator-lldb failed to start: %1").arg(m_guestProcess->errorString()));
notifyEngineSpontaneousShutdown();
return;
}
setGuestDevice(m_guestProcess);
}
}
LldbEngineHost::~LldbEngineHost()
{
showMessage(QLatin1String("tear down qtcreator-lldb"));
if (m_guestProcess) {
disconnect(m_guestProcess, SIGNAL(finished(int,QProcess::ExitStatus)),
this, SLOT(finished(int,QProcess::ExitStatus)));
m_guestProcess->terminate();
m_guestProcess->kill();
}
if (m_ssh && m_ssh->isProcessRunning()) {
// TODO: openssh doesn't do that
m_ssh->sendSignalToProcess(QSsh::SshRemoteProcess::KillSignal);
}
}
void LldbEngineHost::nuke()
{
stderrReady();
showMessage(QLatin1String("Nuke engaged. Bug in Engine/IPC or incompatible IPC versions. "), LogError);
showStatusMessage(tr("Fatal engine shutdown. Consult debugger log for details."));
m_guestProcess->terminate();
m_guestProcess->kill();
notifyEngineSpontaneousShutdown();
}
void LldbEngineHost::sshConnectionError(QSsh::SshError e)
{
showStatusMessage(tr("SSH connection error: %1").arg(e));
}
void LldbEngineHost::finished(int, QProcess::ExitStatus status)
{
showMessage(QString(QLatin1String("guest went bye bye. exit status: %1 and code: %2"))
.arg(status).arg(m_guestProcess->exitCode()), LogError);
nuke();
}
void LldbEngineHost::stderrReady()
{
fprintf(stderr,"%s", m_guestProcess->readAllStandardError().data());
}
DebuggerEngine *createLldbEngine(const DebuggerStartParameters &startParameters)
{
return new LldbEngineHost(startParameters);
}
} // namespace Internal
} // namespace Debugger
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