126 lines
3.0 KiB
C++
126 lines
3.0 KiB
C++
// -*- C++ -*- std::terminate, std::unexpected and friends.
|
|
// Copyright (C) 1994-2015 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of GCC.
|
|
//
|
|
// GCC 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, or (at your option)
|
|
// any later version.
|
|
//
|
|
// GCC 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.
|
|
//
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
#include "typeinfo"
|
|
#include "exception"
|
|
#include <cstdlib>
|
|
#include "unwind-cxx.h"
|
|
#include <bits/exception_defines.h>
|
|
#include <bits/atomic_lockfree_defines.h>
|
|
|
|
#if ATOMIC_POINTER_LOCK_FREE < 2
|
|
#include <ext/concurrence.h>
|
|
namespace
|
|
{
|
|
__gnu_cxx::__mutex mx;
|
|
}
|
|
#endif
|
|
|
|
using namespace __cxxabiv1;
|
|
|
|
void
|
|
__cxxabiv1::__terminate (std::terminate_handler handler) throw ()
|
|
{
|
|
__try
|
|
{
|
|
handler ();
|
|
std::abort ();
|
|
}
|
|
__catch(...)
|
|
{ std::abort (); }
|
|
}
|
|
|
|
void
|
|
std::terminate () throw()
|
|
{
|
|
__terminate (get_terminate ());
|
|
}
|
|
|
|
void
|
|
__cxxabiv1::__unexpected (std::unexpected_handler handler)
|
|
{
|
|
handler();
|
|
std::terminate ();
|
|
}
|
|
|
|
void
|
|
std::unexpected ()
|
|
{
|
|
__unexpected (get_unexpected ());
|
|
}
|
|
|
|
std::terminate_handler
|
|
std::set_terminate (std::terminate_handler func) throw()
|
|
{
|
|
std::terminate_handler old;
|
|
#if ATOMIC_POINTER_LOCK_FREE > 1
|
|
__atomic_exchange (&__terminate_handler, &func, &old, __ATOMIC_ACQ_REL);
|
|
#else
|
|
__gnu_cxx::__scoped_lock l(mx);
|
|
old = __terminate_handler;
|
|
__terminate_handler = func;
|
|
#endif
|
|
return old;
|
|
}
|
|
|
|
std::terminate_handler
|
|
std::get_terminate () noexcept
|
|
{
|
|
std::terminate_handler func;
|
|
#if ATOMIC_POINTER_LOCK_FREE > 1
|
|
__atomic_load (&__terminate_handler, &func, __ATOMIC_ACQUIRE);
|
|
#else
|
|
__gnu_cxx::__scoped_lock l(mx);
|
|
func = __terminate_handler;
|
|
#endif
|
|
return func;
|
|
}
|
|
|
|
std::unexpected_handler
|
|
std::set_unexpected (std::unexpected_handler func) throw()
|
|
{
|
|
std::unexpected_handler old;
|
|
#if ATOMIC_POINTER_LOCK_FREE > 1
|
|
__atomic_exchange (&__unexpected_handler, &func, &old, __ATOMIC_ACQ_REL);
|
|
#else
|
|
__gnu_cxx::__scoped_lock l(mx);
|
|
old = __unexpected_handler;
|
|
__unexpected_handler = func;
|
|
#endif
|
|
return old;
|
|
}
|
|
|
|
std::unexpected_handler
|
|
std::get_unexpected () noexcept
|
|
{
|
|
std::unexpected_handler func;
|
|
#if ATOMIC_POINTER_LOCK_FREE > 1
|
|
__atomic_load (&__unexpected_handler, &func, __ATOMIC_ACQUIRE);
|
|
#else
|
|
__gnu_cxx::__scoped_lock l(mx);
|
|
func = __unexpected_handler;
|
|
#endif
|
|
return func;
|
|
}
|