icinga2/lib/base/exception.cpp

156 lines
5.1 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/exception.hpp"
#include <boost/thread/tss.hpp>
#ifdef HAVE_CXXABI_H
# include <cxxabi.h>
#endif /* HAVE_CXXABI_H */
using namespace icinga;
static boost::thread_specific_ptr<StackTrace> l_LastExceptionStack;
static boost::thread_specific_ptr<ContextTrace> l_LastExceptionContext;
#ifdef HAVE_CXXABI_H
# if __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ > 3)
# define TYPEINFO_TYPE std::type_info
# else
# define TYPEINFO_TYPE void
# endif
# if !defined(__GLIBCXX__) && !defined(_WIN32)
static boost::thread_specific_ptr<void *> l_LastExceptionObj;
static boost::thread_specific_ptr<TYPEINFO_TYPE *> l_LastExceptionPvtInfo;
typedef void (*DestCallback)(void *);
static boost::thread_specific_ptr<DestCallback> l_LastExceptionDest;
extern "C" void __cxa_throw(void *obj, TYPEINFO_TYPE *pvtinfo, void (*dest)(void *));
extern "C" void __cxa_rethrow_primary_exception(void* thrown_object);
# endif /* !__GLIBCXX__ && !_WIN32 */
#endif /* HAVE_CXXABI_H */
void icinga::RethrowUncaughtException(void)
{
#if defined(__GLIBCXX__) || !defined(HAVE_CXXABI_H)
throw;
#else /* __GLIBCXX__ || _WIN32 */
__cxa_throw(*l_LastExceptionObj.get(), *l_LastExceptionPvtInfo.get(), *l_LastExceptionDest.get());
#endif /* __GLIBCXX__ || _WIN32 */
}
#ifdef HAVE_CXXABI_H
extern "C"
void __cxa_throw(void *obj, TYPEINFO_TYPE *pvtinfo, void (*dest)(void *))
{
std::type_info *tinfo = static_cast<std::type_info *>(pvtinfo);
typedef void (*cxa_throw_fn)(void *, std::type_info *, void (*)(void *)) __attribute__((noreturn));
static cxa_throw_fn real_cxa_throw;
#ifndef __GLIBCXX__
l_LastExceptionObj.reset(new void *(obj));
l_LastExceptionPvtInfo.reset(new TYPEINFO_TYPE *(pvtinfo));
l_LastExceptionDest.reset(new DestCallback(dest));
#endif /* __GLIBCXX__ */
if (real_cxa_throw == 0)
real_cxa_throw = (cxa_throw_fn)dlsym(RTLD_NEXT, "__cxa_throw");
#ifdef __GLIBCXX__
void *thrown_ptr = obj;
const std::type_info *boost_exc = &typeid(boost::exception);
const std::type_info *user_exc = &typeid(user_error);
/* Check if the exception is a pointer type. */
if (tinfo->__is_pointer_p())
thrown_ptr = *(void **)thrown_ptr;
if (!user_exc->__do_catch(tinfo, &thrown_ptr, 1)) {
#endif /* __GLIBCXX__ */
StackTrace stack;
SetLastExceptionStack(stack);
ContextTrace context;
SetLastExceptionContext(context);
#ifdef __GLIBCXX__
/* Check if thrown_ptr inherits from boost::exception. */
if (boost_exc->__do_catch(tinfo, &thrown_ptr, 1)) {
boost::exception *ex = (boost::exception *)thrown_ptr;
if (boost::get_error_info<StackTraceErrorInfo>(*ex) == NULL)
*ex << StackTraceErrorInfo(stack);
if (boost::get_error_info<ContextTraceErrorInfo>(*ex) == NULL)
*ex << ContextTraceErrorInfo(context);
}
}
#endif /* __GLIBCXX__ */
real_cxa_throw(obj, tinfo, dest);
}
#endif /* HAVE_CXXABI_H */
StackTrace *icinga::GetLastExceptionStack(void)
{
return l_LastExceptionStack.get();
}
void icinga::SetLastExceptionStack(const StackTrace& trace)
{
l_LastExceptionStack.reset(new StackTrace(trace));
}
ContextTrace *icinga::GetLastExceptionContext(void)
{
return l_LastExceptionContext.get();
}
void icinga::SetLastExceptionContext(const ContextTrace& context)
{
l_LastExceptionContext.reset(new ContextTrace(context));
}
String icinga::DiagnosticInformation(boost::exception_ptr eptr)
{
StackTrace *pt = GetLastExceptionStack();
StackTrace stack;
ContextTrace *pc = GetLastExceptionContext();
ContextTrace context;
if (pt)
stack = *pt;
if (pc)
context = *pc;
try {
boost::rethrow_exception(eptr);
} catch (const std::exception& ex) {
return DiagnosticInformation(ex, pt ? &stack : NULL, pc ? &context : NULL);
}
return boost::diagnostic_information(eptr);
}