gcc/libstdc++-v3/libsupc++/eh_terminate.cc

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// -*- C++ -*- std::terminate, std::unexpected and friends.
// Copyright (C) 1994-2019 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 "eh_term_handler.h"
re PR libstdc++/36104 (gnu-versioned-namespace is broken) 2011-01-14 Benjamin Kosnik <bkoz@redhat.com> PR libstdc++/36104 * include/Makefile.am (bits_sup_headers, stamp-bits-sup): New. * include/Makefile.in: Regenerate. * libsupc++/Makefile.am (std_HEADERS, bits_HEADERS): New. (install-stdHEADERS, install-bitsHEADERS): New. * libsupc++/Makefile.in: Regenerate. * include/bits/c++config: Update for inline namespaces. * libsupc++/cxxabi-forced.h: To... * libsupc++/cxxabi_forced.h: ...this. * libsupc++/hash_bytes.h: Separate file. * libsupc++/typeinfo: Use it. * libsupc++/exception: Adjust for bits subdirectory. * libsupc++/eh_aux_runtime.cc: Same. * libsupc++/eh_ptr.cc: Same. * libsupc++/new_op.cc: Same. * libsupc++/exception_defines.h: Same. * libsupc++/nested_exception.h: Same. * libsupc++/eh_terminate.cc: Same. * libsupc++/vec.cc: Same. * libsupc++/vterminate.cc: Same. * libsupc++/exception_ptr.h: Same. * libsupc++/eh_personality.cc: Same. * libsupc++/eh_call.cc: Same. * libsupc++/new_opnt.cc: Same. * libsupc++/hash_bytes.cc: Same. * config/cpu/arm/cxxabi_tweaks.h: Same. * config/cpu/generic/cxxabi_tweaks.h: Same. * libsupc++/cxxabi.h: Same. Consolidate _GLIBCXX_NOTHROW defines. * include/std/bitset: Same. * include/ext/vstring.tcc: Same. * include/bits/hashtable.h: Same. * include/bits/functional_hash.h: Same. * include/bits/hashtable_policy.h: Same. * include/bits/basic_string.h: Same. * include/bits/istream.tcc: Same. * include/bits/ostream.tcc: Same. * include/bits/algorithmfwd.h: Same. * include/bits/basic_string.tcc: Same. * include/bits/ostream_insert.h: Same. * include/bits/fstream.tcc: Same. * include/bits/functexcept.h: Same. * doc/doxygen/user.cfg.in: Adjust names. * testsuite/ext/profile/mutex_extensions_neg.cc: Adjust line numbers. From-SVN: r168831
2011-01-15 01:27:10 +01:00
#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()
{
if (!func)
func = _GLIBCXX_DEFAULT_TERM_HANDLER;
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()
{
if (!func)
func = std::terminate;
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;
}