// Exception Handling support header (exception_ptr class) for -*- C++ -*-
|
// Exception Handling support header (exception_ptr class) for -*- C++ -*-
|
|
|
// Copyright (C) 2008, 2009 Free Software Foundation
|
// Copyright (C) 2008, 2009 Free Software Foundation
|
//
|
//
|
// This file is part of GCC.
|
// This file is part of GCC.
|
//
|
//
|
// GCC is free software; you can redistribute it and/or modify
|
// GCC is free software; you can redistribute it and/or modify
|
// it under the terms of the GNU General Public License as published by
|
// it under the terms of the GNU General Public License as published by
|
// the Free Software Foundation; either version 3, or (at your option)
|
// the Free Software Foundation; either version 3, or (at your option)
|
// any later version.
|
// any later version.
|
//
|
//
|
// GCC is distributed in the hope that it will be useful,
|
// GCC is distributed in the hope that it will be useful,
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
// GNU General Public License for more details.
|
// GNU General Public License for more details.
|
//
|
//
|
// Under Section 7 of GPL version 3, you are granted additional
|
// Under Section 7 of GPL version 3, you are granted additional
|
// permissions described in the GCC Runtime Library Exception, version
|
// permissions described in the GCC Runtime Library Exception, version
|
// 3.1, as published by the Free Software Foundation.
|
// 3.1, as published by the Free Software Foundation.
|
|
|
// You should have received a copy of the GNU General Public License and
|
// 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;
|
// a copy of the GCC Runtime Library Exception along with this program;
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
// <http://www.gnu.org/licenses/>.
|
// <http://www.gnu.org/licenses/>.
|
|
|
/** @file exception_ptr.h
|
/** @file exception_ptr.h
|
* This is an internal header file, included by other headers and the
|
* This is an internal header file, included by other headers and the
|
* implementation. You should not attempt to use it directly.
|
* implementation. You should not attempt to use it directly.
|
*/
|
*/
|
|
|
#ifndef _EXCEPTION_PTR_H
|
#ifndef _EXCEPTION_PTR_H
|
#define _EXCEPTION_PTR_H
|
#define _EXCEPTION_PTR_H
|
|
|
#pragma GCC visibility push(default)
|
#pragma GCC visibility push(default)
|
|
|
#include <bits/c++config.h>
|
#include <bits/c++config.h>
|
#include <exception_defines.h>
|
#include <exception_defines.h>
|
|
|
#if !defined(_GLIBCXX_ATOMIC_BUILTINS_4)
|
#if !defined(_GLIBCXX_ATOMIC_BUILTINS_4)
|
# error This platform does not support exception propagation.
|
# error This platform does not support exception propagation.
|
#endif
|
#endif
|
|
|
extern "C++" {
|
extern "C++" {
|
|
|
namespace std
|
namespace std
|
{
|
{
|
/**
|
/**
|
* @addtogroup exceptions
|
* @addtogroup exceptions
|
* @{
|
* @{
|
*/
|
*/
|
namespace __exception_ptr
|
namespace __exception_ptr
|
{
|
{
|
class exception_ptr;
|
class exception_ptr;
|
}
|
}
|
|
|
using __exception_ptr::exception_ptr;
|
using __exception_ptr::exception_ptr;
|
|
|
/** Obtain an exception_ptr to the currently handled exception. If there
|
/** Obtain an exception_ptr to the currently handled exception. If there
|
* is none, or the currently handled exception is foreign, return the null
|
* is none, or the currently handled exception is foreign, return the null
|
* value.
|
* value.
|
*/
|
*/
|
exception_ptr current_exception() throw();
|
exception_ptr current_exception() throw();
|
|
|
/// Throw the object pointed to by the exception_ptr.
|
/// Throw the object pointed to by the exception_ptr.
|
void rethrow_exception(exception_ptr) __attribute__ ((__noreturn__));
|
void rethrow_exception(exception_ptr) __attribute__ ((__noreturn__));
|
|
|
namespace __exception_ptr
|
namespace __exception_ptr
|
{
|
{
|
/**
|
/**
|
* @brief An opaque pointer to an arbitrary exception.
|
* @brief An opaque pointer to an arbitrary exception.
|
* @ingroup exceptions
|
* @ingroup exceptions
|
*/
|
*/
|
class exception_ptr
|
class exception_ptr
|
{
|
{
|
void* _M_exception_object;
|
void* _M_exception_object;
|
|
|
explicit exception_ptr(void* __e) throw();
|
explicit exception_ptr(void* __e) throw();
|
|
|
void _M_addref() throw();
|
void _M_addref() throw();
|
void _M_release() throw();
|
void _M_release() throw();
|
|
|
void *_M_get() const throw() __attribute__ ((__pure__));
|
void *_M_get() const throw() __attribute__ ((__pure__));
|
|
|
void _M_safe_bool_dummy() throw() __attribute__ ((__const__));
|
void _M_safe_bool_dummy() throw() __attribute__ ((__const__));
|
|
|
friend exception_ptr std::current_exception() throw();
|
friend exception_ptr std::current_exception() throw();
|
friend void std::rethrow_exception(exception_ptr);
|
friend void std::rethrow_exception(exception_ptr);
|
|
|
public:
|
public:
|
exception_ptr() throw();
|
exception_ptr() throw();
|
|
|
typedef void (exception_ptr::*__safe_bool)();
|
typedef void (exception_ptr::*__safe_bool)();
|
|
|
// For construction from nullptr or 0.
|
// For construction from nullptr or 0.
|
exception_ptr(__safe_bool) throw();
|
exception_ptr(__safe_bool) throw();
|
|
|
exception_ptr(const exception_ptr&) throw();
|
exception_ptr(const exception_ptr&) throw();
|
|
|
#ifdef __GXX_EXPERIMENTAL_CXX0X__
|
#ifdef __GXX_EXPERIMENTAL_CXX0X__
|
exception_ptr(exception_ptr&& __o) throw()
|
exception_ptr(exception_ptr&& __o) throw()
|
: _M_exception_object(__o._M_exception_object)
|
: _M_exception_object(__o._M_exception_object)
|
{ __o._M_exception_object = 0; }
|
{ __o._M_exception_object = 0; }
|
#endif
|
#endif
|
|
|
exception_ptr&
|
exception_ptr&
|
operator=(const exception_ptr&) throw();
|
operator=(const exception_ptr&) throw();
|
|
|
#ifdef __GXX_EXPERIMENTAL_CXX0X__
|
#ifdef __GXX_EXPERIMENTAL_CXX0X__
|
exception_ptr&
|
exception_ptr&
|
operator=(exception_ptr&& __o) throw()
|
operator=(exception_ptr&& __o) throw()
|
{
|
{
|
exception_ptr(static_cast<exception_ptr&&>(__o)).swap(*this);
|
exception_ptr(static_cast<exception_ptr&&>(__o)).swap(*this);
|
return *this;
|
return *this;
|
}
|
}
|
#endif
|
#endif
|
|
|
~exception_ptr() throw();
|
~exception_ptr() throw();
|
|
|
void
|
void
|
swap(exception_ptr&) throw();
|
swap(exception_ptr&) throw();
|
|
|
#ifdef _GLIBCXX_EH_PTR_COMPAT
|
#ifdef _GLIBCXX_EH_PTR_COMPAT
|
// Retained for compatibility with CXXABI_1.3.
|
// Retained for compatibility with CXXABI_1.3.
|
bool operator!() const throw() __attribute__ ((__pure__));
|
bool operator!() const throw() __attribute__ ((__pure__));
|
operator __safe_bool() const throw();
|
operator __safe_bool() const throw();
|
#endif
|
#endif
|
|
|
friend bool
|
friend bool
|
operator==(const exception_ptr&, const exception_ptr&) throw()
|
operator==(const exception_ptr&, const exception_ptr&) throw()
|
__attribute__ ((__pure__));
|
__attribute__ ((__pure__));
|
|
|
const type_info*
|
const type_info*
|
__cxa_exception_type() const throw() __attribute__ ((__pure__));
|
__cxa_exception_type() const throw() __attribute__ ((__pure__));
|
};
|
};
|
|
|
bool
|
bool
|
operator==(const exception_ptr&, const exception_ptr&) throw()
|
operator==(const exception_ptr&, const exception_ptr&) throw()
|
__attribute__ ((__pure__));
|
__attribute__ ((__pure__));
|
|
|
bool
|
bool
|
operator!=(const exception_ptr&, const exception_ptr&) throw()
|
operator!=(const exception_ptr&, const exception_ptr&) throw()
|
__attribute__ ((__pure__));
|
__attribute__ ((__pure__));
|
} // namespace __exception_ptr
|
} // namespace __exception_ptr
|
|
|
|
|
/// Obtain an exception_ptr pointing to a copy of the supplied object.
|
/// Obtain an exception_ptr pointing to a copy of the supplied object.
|
template<typename _Ex>
|
template<typename _Ex>
|
exception_ptr
|
exception_ptr
|
copy_exception(_Ex __ex) throw()
|
copy_exception(_Ex __ex) throw()
|
{
|
{
|
__try
|
__try
|
{
|
{
|
#ifdef __EXCEPTIONS
|
#ifdef __EXCEPTIONS
|
throw __ex;
|
throw __ex;
|
#endif
|
#endif
|
}
|
}
|
__catch(...)
|
__catch(...)
|
{
|
{
|
return current_exception();
|
return current_exception();
|
}
|
}
|
}
|
}
|
|
|
// @} group exceptions
|
// @} group exceptions
|
} // namespace std
|
} // namespace std
|
|
|
} // extern "C++"
|
} // extern "C++"
|
|
|
#pragma GCC visibility pop
|
#pragma GCC visibility pop
|
|
|
#endif
|
#endif
|
|
|
