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Migrate to Boost.Stacktrace

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PR #17014.
This commit is contained in:
Chocobo1
2022-05-12 11:06:05 +08:00
committed by GitHub
parent e698c09298
commit 5c3c6b63ba
11 changed files with 128 additions and 540 deletions
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143
src/app/stacktrace.h
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@@ -1,116 +1,33 @@
// stacktrace.h (c) 2008, Timo Bingmann from http://idlebox.net/
// published under the WTFPL v2.0
/*
* Bittorrent Client using Qt and libtorrent.
* Copyright (C) 2022 Mike Tzou (Chocobo1)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
#ifndef _STACKTRACE_H_
#define _STACKTRACE_H_
#pragma once
#include <stdio.h>
#include <stdlib.h>
#include <execinfo.h>
#include <cxxabi.h>
#include <string>
#include <vector>
/** Print a demangled stack backtrace of the caller function to FILE* out. */
static inline void print_stacktrace(FILE *out = stderr, const int max_frames = 63)
{
fprintf(out, "Stack trace:\n");
// storage array for stack trace address data
std::vector<void *> addrlist(max_frames + 1);
// retrieve current stack addresses
int addrlen = backtrace(addrlist.data(), addrlist.size());
if (addrlen == 0)
{
fprintf(out, " <empty, possibly corrupt>\n");
return;
}
// resolve addresses into strings containing "filename(function+address)",
// this array must be free()-ed
char * *symbollist = backtrace_symbols(addrlist.data(), addrlen);
// allocate string which will be filled with the demangled function name
size_t funcnamesize = 256;
char *funcname = static_cast<char *>(malloc(funcnamesize));
int functionNamesFound = 0;
// iterate over the returned symbol lines. skip the first, it is the
// address of this function.
for (int i = 2; i < addrlen; i++)
{
char *begin_name = 0, *begin_offset = 0, *end_offset = 0;
// find parentheses and +address offset surrounding the mangled name:
// ./module(function+0x15c) [0x8048a6d]
// fprintf(out, "%s TT\n", symbollist[i]);
for (char *p = symbollist[i]; *p; ++p)
{
if (*p == '(')
{
begin_name = p;
}
else if (*p == '+')
{
begin_offset = p;
}
else if ((*p == ')') && begin_offset)
{
end_offset = p;
break;
}
}
if (begin_name && begin_offset && end_offset
&& (begin_name < begin_offset))
{
*begin_name++ = '\0';
*begin_offset++ = '\0';
*end_offset = '\0';
// mangled name is now in [begin_name, begin_offset) and caller
// offset in [begin_offset, end_offset). now apply
// __cxa_demangle():
int status;
char *ret = abi::__cxa_demangle(begin_name,
funcname, &funcnamesize, &status);
if (status == 0)
{
funcname = ret; // use possibly realloc()-ed string
fprintf(out, " %s : %s+%s %s\n",
symbollist[i], funcname, begin_offset, ++end_offset);
}
else
{
// demangling failed. Output function name as a C function with
// no arguments.
fprintf(out, " %s : %s()+%s %s\n",
symbollist[i], begin_name, begin_offset, ++end_offset);
}
++functionNamesFound;
}
else
{
// couldn't parse the line? print the whole line.
fprintf(out, " %s\n", symbollist[i]);
}
}
if (!functionNamesFound)
{
fprintf(out, "There were no function names found in the stack trace\n."
"Seems like debug symbols are not installed, and the stack trace is useless.\n");
}
if (functionNamesFound < addrlen - 2)
{
fprintf(out, "Consider installing debug symbols for packages containing files with empty"
" function names (i.e. empty braces \"()\") to make your stack trace more useful\n");
}
free(funcname);
free(symbollist);
}
#endif // _STACKTRACE_H_
std::string getStacktrace();