icinga2/lib/base/stacktrace.cpp

163 lines
5.0 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
* *
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "base/stacktrace.hpp"
#include "base/qstring.hpp"
#include "base/utility.hpp"
#include "base/initialize.hpp"
#ifdef HAVE_BACKTRACE_SYMBOLS
# include <execinfo.h>
#endif /* HAVE_BACKTRACE_SYMBOLS */
using namespace icinga;
INITIALIZE_ONCE(&StackTrace::StaticInitialize);
#ifdef _MSC_VER
# pragma optimize("", off)
#endif /* _MSC_VER */
StackTrace::StackTrace(void)
{
#ifdef HAVE_BACKTRACE_SYMBOLS
m_Count = backtrace(m_Frames, sizeof(m_Frames) / sizeof(m_Frames[0]));
#else /* HAVE_BACKTRACE_SYMBOLS */
# ifdef _WIN32
m_Count = CaptureStackBackTrace(0, sizeof(m_Frames) / sizeof(m_Frames), m_Frames, NULL);
# else /* _WIN32 */
m_Count = 0;
# endif /* _WIN32 */
#endif /* HAVE_BACKTRACE_SYMBOLS */
}
#ifdef _MSC_VER
# pragma optimize("", on)
#endif /* _MSC_VER */
#ifdef _WIN32
StackTrace::StackTrace(PEXCEPTION_POINTERS exi)
{
STACKFRAME64 frame;
int architecture;
#ifdef _WIN64
architecture = IMAGE_FILE_MACHINE_AMD64;
frame.AddrPC.Offset = exi->ContextRecord->Rip;
frame.AddrFrame.Offset = exi->ContextRecord->Rbp;
frame.AddrStack.Offset = exi->ContextRecord->Rsp;
#else /* _WIN64 */
architecture = IMAGE_FILE_MACHINE_I386;
frame.AddrPC.Offset = exi->ContextRecord->Eip;
frame.AddrFrame.Offset = exi->ContextRecord->Ebp;
frame.AddrStack.Offset = exi->ContextRecord->Esp;
#endif /* _WIN64 */
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrFrame.Mode = AddrModeFlat;
frame.AddrStack.Mode = AddrModeFlat;
m_Count = 0;
while (StackWalk64(architecture, GetCurrentProcess(), GetCurrentThread(),
&frame, exi->ContextRecord, NULL, &SymFunctionTableAccess64,
&SymGetModuleBase64, NULL) && m_Count < sizeof(m_Frames) / sizeof(m_Frames[0])) {
m_Frames[m_Count] = reinterpret_cast<void *>(frame.AddrPC.Offset);
m_Count++;
}
}
#endif /* _WIN32 */
void StackTrace::StaticInitialize(void)
{
#ifdef _WIN32
(void) SymSetOptions(SYMOPT_UNDNAME | SYMOPT_LOAD_LINES);
(void) SymInitialize(GetCurrentProcess(), NULL, TRUE);
#endif /* _WIN32 */
}
/**
* Prints a stacktrace to the specified stream.
*
* @param fp The stream.
* @param ignoreFrames The number of stackframes to ignore (in addition to
* the one this function is executing in).
* @returns true if the stacktrace was printed, false otherwise.
*/
void StackTrace::Print(std::ostream& fp, int ignoreFrames) const
{
fp << std::endl;
#ifndef _WIN32
# ifdef HAVE_BACKTRACE_SYMBOLS
char **messages = backtrace_symbols(m_Frames, m_Count);
for (int i = ignoreFrames + 1; i < m_Count && messages != NULL; ++i) {
String message = messages[i];
char *sym_begin = strchr(messages[i], '(');
if (sym_begin) {
char *sym_end = strchr(sym_begin, '+');
if (sym_end != NULL) {
String sym = String(sym_begin + 1, sym_end);
String sym_demangled = Utility::DemangleSymbolName(sym);
if (sym_demangled.IsEmpty())
sym_demangled = "<unknown function>";
String path = String(messages[i], sym_begin);
size_t slashp = path.RFind("/");
if (slashp != String::NPos)
path = path.SubStr(slashp + 1);
message = path + ": " + sym_demangled + " (" + String(sym_end);
}
}
fp << "\t(" << i - ignoreFrames - 1 << ") " << message << std::endl;
}
std::free(messages);
fp << std::endl;
# else /* HAVE_BACKTRACE_SYMBOLS */
fp << "(not available)" << std::endl;
# endif /* HAVE_BACKTRACE_SYMBOLS */
#else /* _WIN32 */
for (int i = ignoreFrames + 1; i < m_Count; i++) {
fp << "\t(" << i - ignoreFrames - 1 << "): "
<< Utility::GetSymbolName(m_Frames[i])
<< std::endl;
}
#endif /* _WIN32 */
}
std::ostream& icinga::operator<<(std::ostream& stream, const StackTrace& trace)
{
trace.Print(stream, 1);
return stream;
}