mirror of
https://github.com/swift-project/pilotclient.git
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121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
/* Copyright (C) 2015
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* swift Project Community / Contributors
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*
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* This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
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* directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
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* including this file, may be copied, modified, propagated, or distributed except according to the terms
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* contained in the LICENSE file.
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*/
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#include "blackmisc/stacktrace.h"
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#include <QMutex>
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#include <QStringBuilder>
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#include <array>
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#if defined(Q_CC_MSVC)
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# include <windows.h>
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# pragma warning(push)
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# pragma warning(disable:4091)
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# include <dbghelp.h>
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# pragma warning(pop)
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#elif defined(Q_OS_WIN) && defined (Q_CC_GNU)
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# include <windows.h>
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# include <dbghelp.h>
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#elif defined(Q_CC_GNU)
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# include <execinfo.h>
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# include <cxxabi.h>
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# include <cstring>
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#endif
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namespace BlackMisc
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{
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#if defined(QT_NO_DEBUG)
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QStringList getStackTrace()
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{
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return { "No stack trace with release build" };
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}
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#elif defined(Q_OS_WIN32)
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QStringList getStackTrace()
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{
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static QMutex mutex;
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QMutexLocker lock(&mutex);
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auto process = GetCurrentProcess();
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SymInitialize(process, nullptr, true);
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std::array<void*, 100> stack;
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auto frames = CaptureStackBackTrace(1, static_cast<DWORD>(stack.size()), stack.data(), nullptr);
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struct
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{
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SYMBOL_INFO info;
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std::array<char, 256> name;
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} symbol;
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symbol.info.MaxNameLen = static_cast<ULONG>(symbol.name.size() - 1);
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symbol.info.SizeOfStruct = sizeof(symbol.info);
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QStringList result;
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for (int i = 0; i < frames; ++i)
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{
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DWORD displacement = 0;
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IMAGEHLP_LINE64 line;
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line.SizeOfStruct = sizeof(line);
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SymFromAddr(process, reinterpret_cast<quintptr>(stack[i]), nullptr, &symbol.info);
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SymGetLineFromAddr64(process, reinterpret_cast<quintptr>(stack[i]), &displacement, &line);
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result.push_back(QLatin1String(symbol.info.Name) % " line " % QString::number(line.LineNumber));
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}
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return result;
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}
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#elif defined(Q_CC_GNU)
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QStringList getStackTrace()
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{
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std::array<void*, 100> stack;
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auto frames = backtrace(stack.data(), stack.size());
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auto *symbols = backtrace_symbols(stack.data(), frames);
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QStringList result;
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char *demangled = nullptr;
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size_t size = 0;
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for (int i = 0; i < frames; ++i)
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{
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// Using C string functions to avoid unnecessary dynamic memory allocation
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auto *basename = std::strrchr(symbols[i], '/');
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if (! basename) { continue; }
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basename++;
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auto *symbol = std::strchr(basename, '(');
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if (! symbol) { continue; }
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auto *basenameEnd = symbol++;
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auto *end = std::strrchr(symbol, ')');
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if (! end) { continue; }
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auto *offset = std::strrchr(symbol, '+');
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auto *symbolEnd = offset ? offset++ : end;
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auto *temp = demangled; // avoid leaking memory if __cxa_demangle returns nullptr
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demangled = abi::__cxa_demangle(QByteArray(symbol, symbolEnd - symbol).constData(), demangled, &size, nullptr);
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if (demangled)
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{
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result.push_back(QLatin1String(demangled) % ' ' %
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'(' % QLatin1String(basename, basenameEnd - basename) % ' ' % QLatin1String(symbol, end - symbol) % ')');
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}
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else
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{
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result.push_back('(' % QLatin1String(basename, basenameEnd - basename) % ' ' % QLatin1String(symbol, end - symbol) % ')');
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demangled = temp;
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}
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}
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free(symbols);
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free(demangled);
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return result;
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}
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#else
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QStringList getStackTrace()
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{
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return { "No stack trace on this platform" };
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}
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#endif
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}
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