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/* Implementation of utility functions used in test programs.
Copyright (C) 2001-2009 Roberto Bagnara <bagnara@cs.unipr.it>
This file is part of the Parma Watchdog Library (PWL).
The PWL 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 3 of the License, or (at your
option) any later version.
The PWL 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 02111-1307, USA.
For the most up-to-date information see the Parma Polyhedra Library
site: http://www.cs.unipr.it/ppl/ . */
#include "pwl_test.hh"
#include <csignal>
#include <iostream>
#include <exception>
#include <limits>
#ifdef PWL_HAVE_FENV_H
#include <fenv.h>
#endif
namespace {
void
unexpected_exception_handler() {
std::cerr << "unexpected exception thrown" << std::endl;
exit(1);
}
void
uncaught_exception_handler() {
std::cerr << "uncaught exception" << std::endl;
exit(1);
}
#if PWL_HAVE_DECL_SIGACTION
#if defined(PWL_HAVE_SIGINFO_T) && defined(SA_SIGINFO)
void
fpe_sigaction(int sig, siginfo_t* sip, void*) {
if (sig != SIGFPE) {
std::cerr << "fpe_handler called on signal different from SIGFPE"
<< std::endl;
exit(1);
}
const char* s = 0;
switch (sip->si_code) {
case FPE_INTDIV:
s = "integer divide by zero";
break;
case FPE_INTOVF:
s = "integer overflow";
break;
case FPE_FLTDIV:
s = "floating point divide by zero";
break;
case FPE_FLTOVF:
s = "floating point overflow";
break;
case FPE_FLTUND:
s = "floating point underflow";
break;
case FPE_FLTRES:
s = "floating point inexact result";
break;
case FPE_FLTINV:
s = "floating point invalid operation";
break;
case FPE_FLTSUB:
s = "subscript out of range";
break;
default:
break;
}
if (s != 0)
std::cerr << "SIGFPE caught (cause: " << s << ")"
<< std::endl;
else {
std::cerr << "SIGFPE caught (unknown si_code " << sip->si_code << ")"
<< std::endl;
#if defined(PWL_HAVE_FENV_H)
std::cerr << "Inquire with fetestexcept(): ";
#ifdef FE_INEXACT
if (fetestexcept(FE_INEXACT))
std::cerr << "FE_INEXACT ";
#endif
#ifdef FE_DIVBYZERO
if (fetestexcept(FE_DIVBYZERO))
std::cerr << "FE_DIVBYZERO ";
#endif
#ifdef FE_UNDERFLOW
if (fetestexcept(FE_UNDERFLOW))
std::cerr << "FE_UNDERFLOW ";
#endif
#ifdef FE_OVERFLOW
if (fetestexcept(FE_OVERFLOW))
std::cerr << "FE_OVERFLOW ";
#endif
#if FE_INVALID
if (fetestexcept(FE_INVALID))
std::cerr << "FE_INVALID ";
#endif
std::cerr << std::endl;
#endif // defined(PWL_HAVE_FENV_H)
}
exit(1);
}
#else // !defined(PWL_HAVE_SIGINFO_T) || !defined(SA_SIGINFO)
void
fpe_handler(int sig) {
if (sig != SIGFPE) {
std::cerr << "fpe_handler called on signal different from SIGFPE"
<< std::endl;
exit(1);
}
std::cerr << "SIGFPE caught"
<< std::endl;
#if defined(PWL_HAVE_FENV_H)
std::cerr << "Inquire with fetestexcept(): ";
#ifdef FE_INEXACT
if (fetestexcept(FE_INEXACT))
std::cerr << "FE_INEXACT ";
#endif
#ifdef FE_DIVBYZERO
if (fetestexcept(FE_DIVBYZERO))
std::cerr << "FE_DIVBYZERO ";
#endif
#ifdef FE_UNDERFLOW
if (fetestexcept(FE_UNDERFLOW))
std::cerr << "FE_UNDERFLOW ";
#endif
#ifdef FE_OVERFLOW
if (fetestexcept(FE_OVERFLOW))
std::cerr << "FE_OVERFLOW ";
#endif
#if FE_INVALID
if (fetestexcept(FE_INVALID))
std::cerr << "FE_INVALID ";
#endif
std::cerr << std::endl;
#endif // defined(PWL_HAVE_FENV_H)
exit(1);
}
#endif // !defined(PWL_HAVE_SIGINFO_T) || !defined(SA_SIGINFO)
#endif // PWL_HAVE_DECL_SIGACTION
} // namespace
namespace Parma_Watchdog_Library {
namespace Test {
void
set_handlers() {
#if PWL_HAVE_DECL_SIGACTION
struct sigaction action;
sigemptyset(&action.sa_mask);
#if defined(PWL_HAVE_SIGINFO_T) && defined(SA_SIGINFO)
action.sa_sigaction = fpe_sigaction;
action.sa_flags = SA_SIGINFO;
#else // !defined(PWL_HAVE_SIGINFO_T) || !defined(SA_SIGINFO)
action.sa_handler = fpe_handler;
action.sa_flags = 0;
#endif // !defined(PWL_HAVE_SIGINFO_T) || !defined(SA_SIGINFO)
if (sigaction(SIGFPE, &action, NULL) != 0) {
std::cerr << "sigaction() failed"
<< std::endl;
abort();
}
#endif // PWL_HAVE_DECL_SIGACTION
std::set_unexpected(unexpected_exception_handler);
std::set_terminate(uncaught_exception_handler);
}
} // namespace Test
} // namespace Parma_Watchdog_Library
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