// -*- C++ -*- Implement the members of exception_ptr.
-// Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+// Copyright (C) 2008-2020 Free Software Foundation, Inc.
//
// This file is part of GCC.
//
// <http://www.gnu.org/licenses/>.
#include <bits/c++config.h>
-
-#ifdef _GLIBCXX_ATOMIC_BUILTINS_4
+#include "eh_atomics.h"
#define _GLIBCXX_EH_PTR_COMPAT
#include <exception>
-#include <exception_ptr.h>
+#include <bits/exception_ptr.h>
#include "unwind-cxx.h"
using namespace __cxxabiv1;
-std::__exception_ptr::exception_ptr::exception_ptr() throw()
+// Verify assumptions about member layout in exception types
+namespace
+{
+template<typename Ex>
+ constexpr std::size_t unwindhdr()
+ { return offsetof(Ex, unwindHeader); }
+
+template<typename Ex>
+ constexpr std::size_t termHandler()
+ { return unwindhdr<Ex>() - offsetof(Ex, terminateHandler); }
+
+static_assert( termHandler<__cxa_exception>()
+ == termHandler<__cxa_dependent_exception>(),
+ "__cxa_dependent_exception::termHandler layout must be"
+ " consistent with __cxa_exception::termHandler" );
+
+#ifndef __ARM_EABI_UNWINDER__
+template<typename Ex>
+ constexpr std::ptrdiff_t adjptr()
+ { return unwindhdr<Ex>() - offsetof(Ex, adjustedPtr); }
+
+static_assert( adjptr<__cxa_exception>()
+ == adjptr<__cxa_dependent_exception>(),
+ "__cxa_dependent_exception::adjustedPtr layout must be"
+ " consistent with __cxa_exception::adjustedPtr" );
+#endif
+}
+
+std::__exception_ptr::exception_ptr::exception_ptr() noexcept
: _M_exception_object(0) { }
-std::__exception_ptr::exception_ptr::exception_ptr(void* obj) throw()
+std::__exception_ptr::exception_ptr::exception_ptr(void* obj) noexcept
: _M_exception_object(obj) { _M_addref(); }
-std::__exception_ptr::exception_ptr::exception_ptr(__safe_bool) throw()
+std::__exception_ptr::exception_ptr::exception_ptr(__safe_bool) noexcept
: _M_exception_object(0) { }
std::__exception_ptr::
-exception_ptr::exception_ptr(const exception_ptr& other) throw()
+exception_ptr::exception_ptr(const exception_ptr& other) noexcept
: _M_exception_object(other._M_exception_object)
{ _M_addref(); }
-std::__exception_ptr::exception_ptr::~exception_ptr() throw()
+std::__exception_ptr::exception_ptr::~exception_ptr() noexcept
{ _M_release(); }
std::__exception_ptr::exception_ptr&
std::__exception_ptr::
-exception_ptr::operator=(const exception_ptr& other) throw()
+exception_ptr::operator=(const exception_ptr& other) noexcept
{
exception_ptr(other).swap(*this);
return *this;
void
-std::__exception_ptr::exception_ptr::_M_addref() throw()
+std::__exception_ptr::exception_ptr::_M_addref() noexcept
{
if (_M_exception_object)
{
__cxa_refcounted_exception *eh =
__get_refcounted_exception_header_from_obj (_M_exception_object);
- __sync_add_and_fetch (&eh->referenceCount, 1);
+ __gnu_cxx::__eh_atomic_inc (&eh->referenceCount);
}
}
void
-std::__exception_ptr::exception_ptr::_M_release() throw()
+std::__exception_ptr::exception_ptr::_M_release() noexcept
{
if (_M_exception_object)
{
__cxa_refcounted_exception *eh =
__get_refcounted_exception_header_from_obj (_M_exception_object);
- if (__sync_sub_and_fetch (&eh->referenceCount, 1) == 0)
+ if (__gnu_cxx::__eh_atomic_dec (&eh->referenceCount))
{
if (eh->exc.exceptionDestructor)
eh->exc.exceptionDestructor (_M_exception_object);
void*
-std::__exception_ptr::exception_ptr::_M_get() const throw()
+std::__exception_ptr::exception_ptr::_M_get() const noexcept
{ return _M_exception_object; }
void
-std::__exception_ptr::exception_ptr::swap(exception_ptr &other) throw()
+std::__exception_ptr::exception_ptr::swap(exception_ptr &other) noexcept
{
void *tmp = _M_exception_object;
_M_exception_object = other._M_exception_object;
// Retained for compatibility with CXXABI_1.3.
void
-std::__exception_ptr::exception_ptr::_M_safe_bool_dummy() throw () { }
+std::__exception_ptr::exception_ptr::_M_safe_bool_dummy() noexcept { }
// Retained for compatibility with CXXABI_1.3.
bool
-std::__exception_ptr::exception_ptr::operator!() const throw()
+std::__exception_ptr::exception_ptr::operator!() const noexcept
{ return _M_exception_object == 0; }
// Retained for compatibility with CXXABI_1.3.
-std::__exception_ptr::exception_ptr::operator __safe_bool() const throw()
+std::__exception_ptr::exception_ptr::operator __safe_bool() const noexcept
{
return _M_exception_object ? &exception_ptr::_M_safe_bool_dummy : 0;
}
const std::type_info*
-std::__exception_ptr::exception_ptr::__cxa_exception_type() const throw()
+std::__exception_ptr::exception_ptr::__cxa_exception_type() const noexcept
{
__cxa_exception *eh = __get_exception_header_from_obj (_M_exception_object);
return eh->exceptionType;
bool std::__exception_ptr::operator==(const exception_ptr& lhs,
- const exception_ptr& rhs) throw()
+ const exception_ptr& rhs) noexcept
{ return lhs._M_exception_object == rhs._M_exception_object; }
bool std::__exception_ptr::operator!=(const exception_ptr& lhs,
- const exception_ptr& rhs) throw()
+ const exception_ptr& rhs) noexcept
{ return !(lhs == rhs);}
std::exception_ptr
-std::current_exception() throw()
+std::current_exception() noexcept
{
__cxa_eh_globals *globals = __cxa_get_globals ();
__cxa_exception *header = globals->caughtExceptions;
__cxa_free_dependent_exception (dep);
- if (__sync_sub_and_fetch (&header->referenceCount, 1) == 0)
+ if (__gnu_cxx::__eh_atomic_dec (&header->referenceCount))
{
if (header->exc.exceptionDestructor)
header->exc.exceptionDestructor (header + 1);
__cxa_dependent_exception *dep = __cxa_allocate_dependent_exception ();
dep->primaryException = obj;
- __sync_add_and_fetch (&eh->referenceCount, 1);
+ __gnu_cxx::__eh_atomic_inc (&eh->referenceCount);
- dep->unexpectedHandler = __unexpected_handler;
- dep->terminateHandler = __terminate_handler;
+ dep->unexpectedHandler = get_unexpected ();
+ dep->terminateHandler = get_terminate ();
__GXX_INIT_DEPENDENT_EXCEPTION_CLASS(dep->unwindHeader.exception_class);
dep->unwindHeader.exception_cleanup = __gxx_dependent_exception_cleanup;
-#ifdef _GLIBCXX_SJLJ_EXCEPTIONS
+ __cxa_eh_globals *globals = __cxa_get_globals ();
+ globals->uncaughtExceptions += 1;
+
+#ifdef __USING_SJLJ_EXCEPTIONS__
_Unwind_SjLj_RaiseException (&dep->unwindHeader);
#else
_Unwind_RaiseException (&dep->unwindHeader);
}
#undef _GLIBCXX_EH_PTR_COMPAT
-
-#endif