127 lines
2.5 KiB
C++
127 lines
2.5 KiB
C++
/*
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Copyright (C) 2000-2007 Paul Davis
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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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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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 <cstdio>
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#include <iostream>
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#include <string>
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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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#include <cxxabi.h>
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static std::string
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symbol_demangle (const std::string& l)
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{
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int status;
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try {
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char* realname = abi::__cxa_demangle (l.c_str(), 0, 0, &status);
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std::string d (realname);
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free (realname);
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return d;
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} catch (std::exception) {
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}
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return l;
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}
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std::string
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PBD::demangle (std::string const & l)
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{
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std::string::size_type const b = l.find_first_of ("(");
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if (b == std::string::npos) {
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return symbol_demangle (l);
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}
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std::string::size_type const p = l.find_last_of ("+");
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if (p == std::string::npos) {
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return symbol_demangle (l);
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}
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if ((p - b) <= 1) {
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return symbol_demangle (l);
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}
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std::string const fn = l.substr (b + 1, p - b - 1);
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return symbol_demangle (fn);
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}
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void
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PBD::stacktrace (std::ostream& out, int levels)
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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) {
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strings = backtrace_symbols (array, size);
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if (strings) {
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for (i = 0; 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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#else
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std::string
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/* JE - !!!! 'PBD' namespace might possibly get removed (except it's still used in 'libs/canvas/item.cc') */PBD::demangle (std::string const & l)
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{
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return std::string();
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}
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void
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PBD::stacktrace (std::ostream& out, int /*levels*/)
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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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void
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c_stacktrace ()
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{
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PBD::stacktrace (std::cout);
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}
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#endif /* HAVE_EXECINFO */
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