134 lines
3.4 KiB
C++
134 lines
3.4 KiB
C++
/*
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* Copyright (C) 2000-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2006-2007 Taybin Rutkin <taybin@taybin.com>
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* Copyright (C) 2009-2010 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2013-2015 John Emmas <john@creativepost.co.uk>
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* Copyright (C) 2015-2019 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "libpbd-config.h"
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#include "pbd/stacktrace.h"
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#include "pbd/debug.h"
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#include "pbd/demangle.h"
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#include "pbd/compose.h"
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#include "pbd/pthread_utils.h"
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#include <cstdio>
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#include <iostream>
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#include <string>
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#ifdef PLATFORM_WINDOWS
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#include <windows.h>
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#include <dbghelp.h>
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#endif
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void
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PBD::trace_twb ()
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{
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}
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/* Obtain a backtrace and print it to stdout. */
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#ifdef HAVE_EXECINFO
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#include <execinfo.h>
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void
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PBD::stacktrace (std::ostream& out, int levels, size_t start)
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{
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void *array[200];
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size_t size;
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char **strings;
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size_t i;
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size = backtrace (array, 200);
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if (size && size >= start) {
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if (start == 0) {
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out << "-- Stacktrace Thread: " << pthread_name () << std::endl;
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}
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strings = backtrace_symbols (array, (int) size);
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if (strings) {
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for (i = start; i < size && (levels == 0 || i < size_t(levels)); i++) {
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out << " " << demangle (strings[i]) << std::endl;
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}
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free (strings);
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}
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} else {
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out << "No stacktrace available!" << std::endl;
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}
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}
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#elif defined PLATFORM_WINDOWS
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#if !defined CaptureStackBackTrace
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#define CaptureStackBackTrace RtlCaptureStackBackTrace
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extern "C" {
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__declspec(dllimport) USHORT WINAPI CaptureStackBackTrace (
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ULONG FramesToSkip,
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ULONG FramesToCapture,
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PVOID *BackTrace,
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PULONG BackTraceHash);
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}
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#endif
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void
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PBD::stacktrace (std::ostream& out, int levels, size_t start)
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{
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void* stack[62]; // does not support more then 62 levels of stacktrace
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unsigned short frames;
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SYMBOL_INFO* symbol;
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HANDLE process;
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process = GetCurrentProcess();
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out << string_compose ("Backtrace thread: %1", DEBUG_THREAD_SELF) << std::endl;
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SymInitialize (process, NULL, TRUE);
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frames = CaptureStackBackTrace (0, 62, stack, NULL);
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out << "Backtrace frames: " << (int) frames << std::endl;
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symbol = (SYMBOL_INFO*)calloc (sizeof (SYMBOL_INFO) + 256 * sizeof (char), 1);
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symbol->MaxNameLen = 255;
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symbol->SizeOfStruct = sizeof (SYMBOL_INFO);
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for (int i = start; i < frames && (levels == 0 || i < levels); ++i) {
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SymFromAddr (process, (DWORD64)(stack[i]), 0, symbol);
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out << string_compose (" %1: %2 - %3\n", frames - i - 1, symbol->Name, symbol->Address);
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}
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out.flush ();
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free (symbol);
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}
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#else
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void
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PBD::stacktrace (std::ostream& out, int, size_t)
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{
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out << "stack tracing is not enabled on this platform" << std::endl;
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}
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#endif
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