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Debugger[CDB]: Dump Qt5's new QString, QByteArray classes.

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Task-number: QTCREATORBUG-5475

Change-Id: Iee10910e55df8b8308711818da2847b09a52fe92
Reviewed-on: http://codereview.qt.nokia.com/1711
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
This commit is contained in:
Friedemann Kleint
2011-07-15 17:08:55 +02:00
parent 076064ce30
commit 8a28b3c01c
3 changed files with 164 additions and 15 deletions
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2
src/libs/qtcreatorcdbext/qtcreatorcdbextension.cpp
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@@ -278,7 +278,7 @@ extern "C" HRESULT CALLBACK pid(CIDebugClient *client, PCSTR args)
int token;
commandTokens<StringList>(args, &token);
dprintf("Qt Creator CDB extension version 0.1 %d bit built %s.\n", sizeof(void *) > 4 ? 64 : 32, __DATE__);
dprintf("Qt Creator CDB extension version 0.11 (Qt 5 support) %d bit built %s.\n", sizeof(void *) > 4 ? 64 : 32, __DATE__);
if (const ULONG pid = currentProcessId(client)) {
ExtensionContext::instance().report('R', token, 0, "pid", "%u", pid);
} else {

168
src/libs/qtcreatorcdbext/symbolgroupvalue.cpp
View File

@@ -41,6 +41,7 @@
#include <iomanip>
#include <algorithm>
#include <ctype.h>
typedef std::vector<int>::size_type VectorIndexType;
@@ -78,7 +79,8 @@ SymbolGroupValue::SymbolGroupValue(SymbolGroupNode *node,
if (m_node && !m_node->isMemoryAccessible()) { // Invalid if no value
m_node = 0;
if (SymbolGroupValue::verbose)
DebugPrint() << node->name() << '/' << node->iName() << " memory access error";
DebugPrint() << node->name() << '/' << node->iName() << '/'
<< node->type() << " memory access error";
}
}
@@ -446,6 +448,12 @@ unsigned SymbolGroupValue::intSize()
return is;
}
unsigned SymbolGroupValue::pointerDiffSize()
{
static const unsigned is = SymbolGroupValue::sizeOf("ptrdiff_t");
return is;
}
unsigned SymbolGroupValue::sizeOf(const char *type)
{
const unsigned rc = GetTypeSize(type);
@@ -1388,18 +1396,103 @@ void formatKnownTypeFlags(std::ostream &os, KnownType kt)
os << " simple_dumper";
}
/* Helper to read the Qt 5 data elements used for QString's
* and QByteArray's. These element are in a storage pool
* and the data they point to are located at an offset behind
* them. */
// Determine address and length of data from a QByteArrayData/QStringData.
template <typename CharType>
bool readQt5DataSizeAddress(const SymbolGroupValue &dV,
unsigned dataSize,
unsigned *arraySize,
ULONG64 *address)
{
*arraySize = 0;
*address = dV.pointerValue();
if (!*address)
return false;
const SymbolGroupValue sizeV = dV["size"];
const SymbolGroupValue offsetV = dV["offset"];
if (!dataSize || !sizeV || !offsetV)
return false;
*arraySize = sizeV.intValue();
*address += dataSize + offsetV.intValue() / sizeof(CharType);
return true;
}
// Retrieve data from a QByteArrayData/QStringData in desired type.
// For empty arrays, no data are allocated.
template <typename CharType>
bool readQt5Data(const SymbolGroupValue &dV,
unsigned dSize,
bool zeroTerminated,
unsigned sizeLimit,
unsigned *fullSize,
unsigned *arraySize,
CharType **array)
{
*array = 0;
*arraySize = *fullSize = 0;
ULONG64 address = 0;
if (!readQt5DataSizeAddress<CharType>(dV, dSize, fullSize, &address))
return false;
if (!*fullSize)
return true;
const bool truncated = *fullSize > sizeLimit;
*arraySize = truncated ? sizeLimit : *fullSize;
const unsigned memorySize =
sizeof(CharType) * (*arraySize + (zeroTerminated ? 1 : 0));
unsigned char *memory =
SymbolGroupValue::readMemory(dV.context().dataspaces,
address, memorySize);
if (!memory)
return false;
*array = reinterpret_cast<CharType *>(memory);
if (truncated && zeroTerminated)
*(*array + *arraySize) = CharType(0);
return true;
}
static inline bool dumpQString(const SymbolGroupValue &v, std::wostream &str)
{
if (const SymbolGroupValue d = v["d"]) {
if (const SymbolGroupValue sizeValue = d["size"]) {
const QtInfo &qtInfo = QtInfo::get(v.context());
const SymbolGroupValue dV = v["d"];
if (!dV)
return false;
// Qt 4.
if (qtInfo.version < 5) {
if (const SymbolGroupValue sizeValue = dV["size"]) {
const int size = sizeValue.intValue();
if (size >= 0) {
str << L'"' << d["data"].wcharPointerData(size) << L'"';
str << L'"' << dV["data"].wcharPointerData(size) << L'"';
return true;
}
}
}
return false;
} // Qt 4.
// Qt 5: Data start at offset past the 'd' of type QStringData.
static const unsigned dataSize =
SymbolGroupValue::sizeOf(qtInfo.prependQtCoreModule("QStringData").c_str());
if (!dataSize)
return false;
wchar_t *memory;
unsigned fullSize;
unsigned size;
if (!readQt5Data(dV, dataSize, true, 10240, &fullSize, &size, &memory))
return false;
if (size) {
str << L'"' << memory;
if (fullSize > size)
str << L"...";
str << L'"';
} else {
str << L"\"\"";
}
delete [] memory;
return true;
}
/* Pad a memory offset to align with pointer size */
@@ -1436,6 +1529,13 @@ static unsigned qByteArraySize(const SymbolGroupValueContext &ctx)
return size;
}
/* Return the size of a Qt 5's QByteArrayData */
static unsigned q5ByteArrayDataSize(const SymbolGroupValueContext &ctx)
{
static const unsigned size = SymbolGroupValue::sizeOf(QtInfo::get(ctx).prependQtCoreModule("QByteArrayData").c_str());
return size;
}
/* Return the size of a QAtomicInt */
static unsigned qAtomicIntSize(const SymbolGroupValueContext &ctx)
{
@@ -1446,14 +1546,47 @@ static unsigned qAtomicIntSize(const SymbolGroupValueContext &ctx)
// Dump a QByteArray
static inline bool dumpQByteArray(const SymbolGroupValue &v, std::wostream &str)
{
const QtInfo &qtInfo = QtInfo::get(v.context());
const SymbolGroupValue dV = v["d"];
if (!dV)
return false;
// Qt 4.
if (qtInfo.version < 5) {
// TODO: More sophisticated dumping of binary data?
if (const SymbolGroupValue data = v["d"]["data"]) {
if (const SymbolGroupValue data = dV["data"]) {
str << data.value();
return true;
}
return false;
}
// Qt 5: Data start at offset past the 'd' of type QByteArrayData.
char *memory;
unsigned fullSize;
unsigned size;
if (!readQt5Data(dV, q5ByteArrayDataSize(v.context()), false, 10240, &fullSize, &size, &memory))
return false;
if (size) {
// Emulate CDB's behavior of replacing unprintable characters
// by dots.
std::wstring display;
display.reserve(size);
char *memEnd = memory + size;
for (char *p = memory; p < memEnd; p++) {
const char c = *p;
display.push_back(c >= 0 && isprint(c) ? wchar_t(c) : L'.');
}
str << fullSize << L" bytes \"" << display;
if (fullSize > size)
str << L"...";
str << L'"';
} else {
str << L"<empty>";
}
delete [] memory;
return true;
}
/* Below are some helpers for simple dumpers for some Qt classes accessing their
* private classes without the debugger's symbolic information (applicable to non-exported
* private classes such as QFileInfoPrivate, etc). This is done by dereferencing the
@@ -2248,18 +2381,33 @@ static inline std::vector<AbstractSymbolGroupNode *>
complexDumpQByteArray(SymbolGroupNode *n, const SymbolGroupValueContext &ctx)
{
std::vector<AbstractSymbolGroupNode *> rc;
const SymbolGroupValue ba(n, ctx);
int size = ba["d"]["size"].intValue();
ULONG64 address = ba["d"]["data"].pointerValue();
const SymbolGroupValue baV(n, ctx);
const SymbolGroupValue dV = baV["d"];
if (!dV)
return rc;
// Determine memory area.
unsigned size = 0;
ULONG64 address = 0;
if (QtInfo::get(ctx).version > 4) {
readQt5DataSizeAddress<char>(dV, q5ByteArrayDataSize(ctx),
&size, &address);
} else {
size = dV["size"].intValue();
address = dV["data"].pointerValue();
}
if (size <= 0 || !address)
return rc;
if (size > 200)
size = 200;
rc.reserve(size);
const std::string charType = "unsigned char";
std::string errorMessage;
SymbolGroup *sg = n->symbolGroup();
for (int i = 0; i < size; ++i, ++address) {
for (int i = 0; i < (int)size; ++i, ++address) {
SymbolGroupNode *en = sg->addSymbol(std::string(), SymbolGroupValue::pointedToSymbolName(address, charType),
std::string(), &errorMessage);
if (!en) {

1
src/libs/qtcreatorcdbext/symbolgroupvalue.h
View File

@@ -149,6 +149,7 @@ public:
std::string *errorMessage = 0);
static unsigned pointerSize();
static unsigned pointerDiffSize();
static unsigned intSize();
// get the inner types: "QMap<int, double>" -> "int", "double"