69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright:
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* 2012-2016, Danny Robson <danny@nerdcruft.net>
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*/
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#include "backtrace.hpp"
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#include "win32/error.hpp"
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#include "win32/handle.hpp"
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#include "win32/windows.hpp"
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#include "debug.hpp"
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#include "except.hpp"
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#include <cstdlib>
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#include <dbghelp.h>
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///////////////////////////////////////////////////////////////////////////////
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debug::backtrace::backtrace (void)
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{
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m_frames.resize (DEFAULT_DEPTH);
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auto process = GetCurrentProcess();
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if (!SymInitialize (process, NULL, TRUE))
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cruft::win32::error::throw_code ();
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while (true) {
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auto res = CaptureStackBackTrace (1, m_frames.size (), m_frames.data (), NULL);
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if (res != m_frames.size ()) {
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m_frames.resize (res);
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break;
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}
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m_frames.resize (m_frames.size () * 2);
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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std::ostream&
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debug::operator <<(std::ostream &os, const debug::backtrace &rhs) {
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static auto self = GetCurrentProcess ();
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static auto ready = SymInitialize (self, nullptr, TRUE);
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CHECK (ready);
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static constexpr size_t MAX_LENGTH = 255;
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struct {
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SYMBOL_INFO info;
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char name[MAX_LENGTH + 1];
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} symbol;
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symbol.info.MaxNameLen = MAX_LENGTH;
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symbol.info.SizeOfStruct = sizeof (SYMBOL_INFO);
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for (void *frame: rhs.frames ()) {
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symbol.name[0] = '\0';
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SymFromAddr (self, (DWORD64)frame, 0, &symbol.info);
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symbol.name[MAX_LENGTH] = '\0';
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os << self << "\t" << frame << "\t" << symbol.name << "\n";
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}
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return os;
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}
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