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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "qtcassert.h"
#include <QByteArray>
#include <QDebug>
#include <QMutex>
#include <QTime>
#if defined(Q_OS_UNIX)
#include <stdio.h>
#include <signal.h>
#include <execinfo.h>
#elif defined(_MSC_VER)
#ifdef QTCREATOR_PCH_H
#define CALLBACK WINAPI
#define OUT
#define IN
#endif
#include <Windows.h>
#include <DbgHelp.h>
#endif
namespace Utils {
void dumpBacktrace(int maxdepth)
{
const int ArraySize = 1000;
if (maxdepth < 0 || maxdepth > ArraySize)
maxdepth = ArraySize;
#if defined(Q_OS_UNIX)
void *bt[ArraySize] = {nullptr};
int size = backtrace(bt, maxdepth);
char **lines = backtrace_symbols(bt, size);
for (int i = 0; i < size; ++i)
qDebug() << "0x" + QByteArray::number(quintptr(bt[i]), 16) << lines[i];
free(lines);
#elif defined(_MSC_VER)
DWORD machineType;
#if defined(_M_X64)
machineType = IMAGE_FILE_MACHINE_AMD64;
#elif defined(_M_ARM64)
machineType = IMAGE_FILE_MACHINE_ARM64;
#else
return;
#endif
static QMutex mutex;
mutex.lock();
HANDLE process = GetCurrentProcess();
HANDLE thread = GetCurrentThread();
CONTEXT ctx;
RtlCaptureContext(&ctx);
STACKFRAME64 frame;
memset(&frame, 0, sizeof(STACKFRAME64));
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrStack.Mode = AddrModeFlat;
frame.AddrFrame.Mode = AddrModeFlat;
#if defined(_M_X64)
frame.AddrPC.Offset = ctx.Rip;
frame.AddrStack.Offset = ctx.Rsp;
frame.AddrFrame.Offset = ctx.Rbp;
#elif defined(_M_ARM64)
frame.AddrPC.Offset = ctx.Pc;
frame.AddrStack.Offset = ctx.Sp;
frame.AddrFrame.Offset = ctx.Fp;
#endif
// ignore the first two frames those contain only writeAssertLocation and dumpBacktrace
int depth = -3;
static bool symbolsInitialized = false;
if (!symbolsInitialized) {
SymInitialize(process, NULL, TRUE);
SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS);
symbolsInitialized = true;
}
while (StackWalk64(machineType,
process,
thread,
&frame,
&ctx,
NULL,
&SymFunctionTableAccess64,
&SymGetModuleBase64,
NULL)) {
if (++depth < 0)
continue;
char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(TCHAR)];
PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)buffer;
pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
pSymbol->MaxNameLen = MAX_SYM_NAME;
DWORD64 displacement = 0;
if (!SymFromAddr(process, frame.AddrPC.Offset, &displacement, pSymbol))
break;
DWORD symDisplacement = 0;
IMAGEHLP_LINE64 lineInfo;
SymSetOptions(SYMOPT_LOAD_LINES);
QString out = QString(" %1: 0x%2 at %3")
.arg(depth)
.arg(QString::number(pSymbol->Address, 16))
.arg(QString::fromLatin1(&pSymbol->Name[0], pSymbol->NameLen));
if (SymGetLineFromAddr64(process, frame.AddrPC.Offset, &symDisplacement, &lineInfo)) {
out.append(QString(" at %3:%4")
.arg(QString::fromLatin1(lineInfo.FileName),
QString::number(lineInfo.LineNumber)));
}
qDebug().noquote() << out;
if (depth == maxdepth)
break;
}
mutex.unlock();
#endif
}
void writeAssertLocation(const char *msg)
{
const QByteArray time = QTime::currentTime().toString(Qt::ISODateWithMs).toLatin1();
static bool goBoom = qEnvironmentVariableIsSet("QTC_FATAL_ASSERTS");
if (goBoom)
qFatal("SOFT ASSERT [%s] made fatal: %s", time.data(), msg);
else
qDebug("SOFT ASSERT [%s]: %s", time.data(), msg);
static int maxdepth = qEnvironmentVariableIntValue("QTC_BACKTRACE_MAXDEPTH");
if (maxdepth != 0)
dumpBacktrace(maxdepth);
}
} // namespace Utils
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