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debugger: rework 'jump to source' logic

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This commit is contained in:
hjk
2009-10-05 12:00:47 +02:00
parent 1f1c899cc0
commit 75529d87d3
5 changed files with 143 additions and 120 deletions
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243
src/plugins/debugger/gdb/gdbengine.cpp
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@@ -894,18 +894,13 @@ void GdbEngine::updateAll()
{
QTC_ASSERT(state() == InferiorUnrunnable || state() == InferiorStopped, /**/);
tryLoadDebuggingHelpers();
updateLocals();
postCommand(_("-stack-list-frames"), WatchUpdate, CB(handleStackListFrames1), false);
postCommand(_("-stack-list-frames"), WatchUpdate, CB(handleStackListFrames),
QVariant::fromValue<StackCookie>(StackCookie(false, true)));
manager()->stackHandler()->setCurrentIndex(0);
if (supportsThreads())
postCommand(_("-thread-list-ids"), WatchUpdate, CB(handleStackListThreads), 0);
manager()->reloadRegisters();
}
void GdbEngine::handleStackListFrames1(const GdbResponse &response)
{
handleStackListFrames(response);
manager()->gotoLocation(manager()->stackHandler()->currentFrame(), true);
updateLocals();
}
void GdbEngine::handleQuerySources(const GdbResponse &response)
@@ -1182,29 +1177,6 @@ void GdbEngine::handleAsyncOutput(const GdbMi &data)
#endif
}
void GdbEngine::reloadFullStack()
{
QString cmd = _("-stack-list-frames");
postCommand(cmd, WatchUpdate, CB(handleStackListFrames), true);
}
void GdbEngine::reloadStack()
{
QString cmd = _("-stack-list-frames");
int stackDepth = theDebuggerAction(MaximalStackDepth)->value().toInt();
if (stackDepth && !m_gdbAdapter->isTrkAdapter())
cmd += _(" 0 ") + QString::number(stackDepth);
postCommand(cmd, WatchUpdate, CB(handleStackListFrames), false);
// FIXME: gdb 6.4 symbianelf likes to be asked twice. The first time it
// returns with "^error,msg="Previous frame identical to this frame
// (corrupt stack?)". Might be related to the fact that we can't
// access the memory belonging to the lower frames. But as we know
// this sometimes happens, ask the second time immediately instead
// of waiting for the first request to fail.
if (m_gdbAdapter->isTrkAdapter())
postCommand(cmd, WatchUpdate, CB(handleStackListFrames), false);
}
void GdbEngine::handleStop1(const GdbResponse &response)
{
GdbMi data = response.cookie.value<GdbMi>();
@@ -1307,7 +1279,7 @@ void GdbEngine::handleStop2(const GdbMi &data)
manager()->stackHandler()->setCurrentIndex(0);
updateLocals(); // Quick shot
reloadStack();
reloadStack(false);
if (supportsThreads()) {
int currentId = data.findChild("thread-id").data().toInt();
@@ -2235,13 +2207,52 @@ void GdbEngine::reloadSourceFiles()
//
//////////////////////////////////////////////////////////////////////
void GdbEngine::handleStackSelectThread(const GdbResponse &)
void GdbEngine::selectThread(int index)
{
//qDebug("FIXME: StackHandler::handleOutput: SelectThread");
showStatusMessage(tr("Retrieving data for stack view..."), 3000);
reloadStack();
ThreadsHandler *threadsHandler = manager()->threadsHandler();
threadsHandler->setCurrentThread(index);
QList<ThreadData> threads = threadsHandler->threads();
QTC_ASSERT(index < threads.size(), return);
int id = threads.at(index).id;
showStatusMessage(tr("Retrieving data for stack view..."), 10000);
postCommand(_("-thread-select %1").arg(id), CB(handleStackSelectThread));
}
void GdbEngine::handleStackSelectThread(const GdbResponse &)
{
QTC_ASSERT(state() == InferiorUnrunnable || state() == InferiorStopped, /**/);
//qDebug("FIXME: StackHandler::handleOutput: SelectThread");
showStatusMessage(tr("Retrieving data for stack view..."), 3000);
manager()->reloadRegisters();
reloadStack(true);
updateLocals();
}
void GdbEngine::reloadFullStack()
{
QString cmd = _("-stack-list-frames");
postCommand(cmd, WatchUpdate, CB(handleStackListFrames),
QVariant::fromValue<StackCookie>(StackCookie(true, true)));
}
void GdbEngine::reloadStack(bool forceGotoLocation)
{
QString cmd = _("-stack-list-frames");
int stackDepth = theDebuggerAction(MaximalStackDepth)->value().toInt();
if (stackDepth && !m_gdbAdapter->isTrkAdapter())
cmd += _(" 0 ") + QString::number(stackDepth);
// FIXME: gdb 6.4 symbianelf likes to be asked twice. The first time it
// returns with "^error,msg="Previous frame identical to this frame
// (corrupt stack?)". Might be related to the fact that we can't
// access the memory belonging to the lower frames. But as we know
// this sometimes happens, ask the second time immediately instead
// of waiting for the first request to fail.
if (m_gdbAdapter->isTrkAdapter())
postCommand(cmd, WatchUpdate);
postCommand(cmd, WatchUpdate, CB(handleStackListFrames),
QVariant::fromValue<StackCookie>(StackCookie(false, forceGotoLocation)));
}
StackFrame GdbEngine::parseStackFrame(const GdbMi &frameMi, int level)
{
@@ -2266,94 +2277,94 @@ void GdbEngine::handleStackListFrames(const GdbResponse &response)
#else
bool handleIt = response.resultClass == GdbResultDone;
#endif
if (handleIt) {
bool isFull = response.cookie.toBool();
QList<StackFrame> stackFrames;
GdbMi stack = response.data.findChild("stack");
if (!stack.isValid()) {
qDebug() << "FIXME: stack:" << stack.toString();
return;
}
int topFrame = -1;
int n = stack.childCount();
for (int i = 0; i != n; ++i) {
stackFrames.append(parseStackFrame(stack.childAt(i), i));
const StackFrame &frame = stackFrames.back();
#if defined(Q_OS_WIN)
const bool isBogus =
// Assume this is wrong and points to some strange stl_algobase
// implementation. Happens on Karsten's XP system with Gdb 5.50
(frame.file.endsWith(__("/bits/stl_algobase.h")) && frame.line == 150)
// Also wrong. Happens on Vista with Gdb 5.50
|| (frame.function == __("operator new") && frame.line == 151);
// Immediately leave bogus frames.
if (topFrame == -1 && isBogus) {
postCommand(_("-exec-finish"));
return;
}
#endif
// Initialize top frame to the first valid frame.
// FIXME: Check for QFile(frame.fullname).isReadable()?
const bool isValid = !frame.file.isEmpty() && !frame.function.isEmpty();
if (isValid && topFrame == -1)
topFrame = i;
}
bool canExpand = !isFull
&& (n >= theDebuggerAction(MaximalStackDepth)->value().toInt());
theDebuggerAction(ExpandStack)->setEnabled(canExpand);
manager()->stackHandler()->setFrames(stackFrames, canExpand);
#ifdef Q_OS_MAC
// Mac gdb does not add the location to the "stopped" message,
// so the early gotoLocation() was not triggered. Force it here.
bool jump = topFrame != -1
&& !theDebuggerBoolSetting(OperateByInstruction);
#else
// For topFrame == -1 there is no frame at all, for topFrame == 0
// we already issued a 'gotoLocation' when reading the *stopped
// message. Also, when OperateByInstruction we always want to
// use frame #0.
bool jump = topFrame != -1 && topFrame != 0
&& !theDebuggerBoolSetting(OperateByInstruction);
#endif
if (jump) {
const StackFrame &frame = manager()->stackHandler()->currentFrame();
qDebug() << "GOTO, 2nd try" << frame.toString() << topFrame;
gotoLocation(frame, true);
}
} else {
if (!handleIt) {
// That always happens on symbian gdb with
// ^error,data={msg="Previous frame identical to this frame (corrupt stack?)"
// logstreamoutput="Previous frame identical to this frame (corrupt stack?)\n"
//qDebug() << "LISTING STACK FAILED: " << response.toString();
return;
}
}
void GdbEngine::selectThread(int index)
{
//reset location arrow
m_manager->resetLocation();
StackCookie cookie = response.cookie.value<StackCookie>();
QList<StackFrame> stackFrames;
ThreadsHandler *threadsHandler = manager()->threadsHandler();
threadsHandler->setCurrentThread(index);
GdbMi stack = response.data.findChild("stack");
if (!stack.isValid()) {
qDebug() << "FIXME: stack:" << stack.toString();
return;
}
QList<ThreadData> threads = threadsHandler->threads();
QTC_ASSERT(index < threads.size(), return);
int id = threads.at(index).id;
showStatusMessage(tr("Retrieving data for stack view..."), 10000);
postCommand(_("-thread-select %1").arg(id), CB(handleStackSelectThread));
int targetFrame = -1;
int n = stack.childCount();
for (int i = 0; i != n; ++i) {
stackFrames.append(parseStackFrame(stack.childAt(i), i));
const StackFrame &frame = stackFrames.back();
#if defined(Q_OS_WIN)
const bool isBogus =
// Assume this is wrong and points to some strange stl_algobase
// implementation. Happens on Karsten's XP system with Gdb 5.50
(frame.file.endsWith(__("/bits/stl_algobase.h")) && frame.line == 150)
// Also wrong. Happens on Vista with Gdb 5.50
|| (frame.function == __("operator new") && frame.line == 151);
// Immediately leave bogus frames.
if (targetFrame == -1 && isBogus) {
postCommand(_("-exec-finish"));
return;
}
#endif
// Initialize top frame to the first valid frame.
// FIXME: Check for QFile(frame.fullname).isReadable()?
const bool isValid = !frame.file.isEmpty() && !frame.function.isEmpty();
if (isValid && targetFrame == -1)
targetFrame = i;
}
bool canExpand = !cookie.isFull
&& (n >= theDebuggerAction(MaximalStackDepth)->value().toInt());
theDebuggerAction(ExpandStack)->setEnabled(canExpand);
manager()->stackHandler()->setFrames(stackFrames, canExpand);
// We can't jump to any file if we don't have any frames.
if (stackFrames.isEmpty())
return;
// targetFrame contains the top most frame for which we have source
// information. That's typically the frame we'd like to jump to, with
// a few exceptions:
// Always jump to frame #0 when stepping by instruction.
if (theDebuggerBoolSetting(OperateByInstruction))
targetFrame = 0;
// If there is no frame with source, jump to frame #0.
if (targetFrame == -1)
targetFrame = 0;
#ifdef Q_OS_MAC
// Mac gdb does not add the location to the "stopped" message,
// so the early gotoLocation() was not triggered. Force it here.
bool jump = true;
#else
// For targetFrame == 0 we already issued a 'gotoLocation'
// when reading the *stopped message.
bool jump = targetFrame != 0;
#endif
manager()->stackHandler()->setCurrentIndex(targetFrame);
if (jump || cookie.gotoLocation) {
const StackFrame &frame = manager()->stackHandler()->currentFrame();
//qDebug() << "GOTO, 2ND ATTEMPT: " << frame.toString() << targetFrame;
gotoLocation(frame, true);
}
}
void GdbEngine::activateFrame(int frameIndex)
{
m_manager->resetLocation();
if (state() != InferiorStopped)
return;
@@ -2394,7 +2405,8 @@ void GdbEngine::handleStackListThreads(const GdbResponse &response)
thread.id = items.at(index).data().toInt();
threads.append(thread);
if (thread.id == id) {
//qDebug() << "SETTING INDEX TO:" << index << " ID:" << id << " RECOD:" << response.toString();
//qDebug() << "SETTING INDEX TO:" << index << " ID:"
// << id << " RECOD:" << response.toString();
currentIndex = index;
}
}
@@ -3086,7 +3098,7 @@ void GdbEngine::sendWatchParameters(const QByteArray &params0)
void GdbEngine::handleVarAssign(const GdbResponse &)
{
// everything might have changed, force re-evaluation
// Everything might have changed, force re-evaluation.
// FIXME: Speed this up by re-using variables and only
// marking values as 'unknown'
setTokenBarrier();
@@ -3421,7 +3433,8 @@ void GdbEngine::handleStackListArguments(const GdbResponse &response)
const GdbMi args = frame.findChild("args");
m_currentFunctionArgs = args.children();
} else if (response.resultClass == GdbResultError) {
qDebug() << "FIXME: GdbEngine::handleStackListArguments: should not happen";
qDebug() << "FIXME: GdbEngine::handleStackListArguments: should not happen"
<< response.toString();
}
}