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/*
* LLDB-specific implementation of frame stack model
* Copyright 2016 Aetf <aetf@unlimitedcodeworks.xyz>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License or (at your option) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "framestackmodel.h"
#include "debuglog.h"
#include "debugsession.h"
#include "mi/micommand.h"
#include <KLocalizedString>
namespace {
QString getFunctionOrAddress(const KDevMI::MI::Value &frame)
{
if (frame.hasField(QStringLiteral("func")))
return frame[QStringLiteral("func")].literal();
else
return frame[QStringLiteral("addr")].literal();
}
}
using namespace KDevMI::LLDB;
using namespace KDevMI::MI;
using namespace KDevMI;
LldbFrameStackModel::LldbFrameStackModel(DebugSession *session)
: MIFrameStackModel(session)
, stoppedAtThread(-1)
{
connect(session, &DebugSession::inferiorStopped, this, &LldbFrameStackModel::inferiorStopped);
}
DebugSession* LldbFrameStackModel::session()
{
return static_cast<DebugSession *>(FrameStackModel::session());
}
void LldbFrameStackModel::inferiorStopped(const MI::AsyncRecord& r)
{
if (session()->debuggerStateIsOn(s_shuttingDown)) return;
if (r.hasField(QStringLiteral("thread-id"))) {
stoppedAtThread = r[QStringLiteral("thread-id")].toInt();
}
}
void LldbFrameStackModel::fetchThreads()
{
// TODO: preliminary test shows there might be a bug in lldb-mi
// that's causing std::logic_error when executing -thread-info with
// more than one threads. Find a workaround for this (and report bug
// if it truly is).
session()->addCommand(ThreadInfo, QString(), this, &LldbFrameStackModel::handleThreadInfo);
}
void LldbFrameStackModel::handleThreadInfo(const ResultRecord& r)
{
const Value& threads = r[QStringLiteral("threads")];
QVector<FrameStackModel::ThreadItem> threadsList;
threadsList.reserve(threads.size());
for (int gidx = 0; gidx != threads.size(); ++gidx) {
FrameStackModel::ThreadItem i;
const Value & threadMI = threads[gidx];
i.nr = threadMI[QStringLiteral("id")].toInt();
if (threadMI[QStringLiteral("state")].literal() == QLatin1String("stopped")) {
// lldb-mi returns multiple frame entry for each thread
// so can't directly use threadMI["frame"]
auto &th = static_cast<const TupleValue&>(threadMI);
Value *topFrame = nullptr;
for (auto res : th.results) {
if (res->variable == QLatin1String("frame")) {
if (!topFrame || (*res->value)[QStringLiteral("level")].toInt() < (*topFrame)[QStringLiteral("level")].toInt()) {
topFrame = res->value;
}
}
}
i.name = getFunctionOrAddress(*topFrame);
} else {
i.name = i18n("(running)");
}
threadsList << i;
}
setThreads(threadsList);
if (r.hasField(QStringLiteral("current-thread-id"))) {
int currentThreadId = r[QStringLiteral("current-thread-id")].toInt();
setCurrentThread(currentThreadId);
if (session()->hasCrashed()) {
setCrashedThreadIndex(currentThreadId);
}
}
// lldb-mi doesn't have current-thread-id field. Use the thread-id field when inferiorStopped
if (stoppedAtThread != -1) {
setCurrentThread(stoppedAtThread);
}
stoppedAtThread = -1;
}
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