/elec/propeller-clock

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57 by edam
added ulibc
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// Exception Handling support header for -*- C++ -*-
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// Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2002
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// Free Software Foundation
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//
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// This file is part of GNU CC.
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//
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// GNU CC is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// 
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// GNU CC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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// 
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// You should have received a copy of the GNU General Public License
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// along with GNU CC; see the file COPYING.  If not, write to
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// the Free Software Foundation, 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction.  Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License.  This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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/** @file exception
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 *  This header defines several types and functions relating to the
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 *  handling of exceptions in a C++ program.
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 */
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#ifndef __EXCEPTION__
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#define __EXCEPTION__
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#include <basic_definitions>
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extern "C++" {
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namespace std 
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{
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  /**
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   *  @brief Base class for all library exceptions.
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   *
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   *  This is the base class for all exceptions thrown by the standard
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   *  library, and by certain language expressions.  You are free to derive
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   *  your own %exception classes, or use a different hierarchy, or to
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   *  throw non-class data (e.g., fundamental types).
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   */
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  class exception 
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  {
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  public:
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    exception() throw() { }
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    virtual ~exception() throw();
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    /** Returns a C-style character string describing the general cause
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     *  of the current error.  */
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    virtual const char* what() const throw();
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  };
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  /** If an %exception is thrown which is not listed in a function's
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   *  %exception specification, one of these may be thrown.  */
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  class bad_exception : public exception 
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  {
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  public:
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    bad_exception() throw() { }
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    // This declaration is not useless:
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    // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
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    virtual ~bad_exception() throw();
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  };
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  /// If you write a replacement %terminate handler, it must be of this type.
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  typedef void (*terminate_handler) ();
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  /// If you write a replacement %unexpected handler, it must be of this type.
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  typedef void (*unexpected_handler) ();
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  /// Takes a new handler function as an argument, returns the old function.
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  terminate_handler set_terminate(terminate_handler) throw();
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  /** The runtime will call this function if %exception handling must be
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   *  abandoned for any reason.  */
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  void terminate() __UCLIBCXX_NORETURN;
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  /// Takes a new handler function as an argument, returns the old function.
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  unexpected_handler set_unexpected(unexpected_handler) throw();
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  /** The runtime will call this function if an %exception is thrown which
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   *  violates the function's %exception specification.  */
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  void unexpected() __UCLIBCXX_NORETURN;
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  /** [18.6.4]/1:  "Returns true after completing evaluation of a
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   *  throw-expression until either completing initialization of the
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   *  exception-declaration in the matching handler or entering @c unexpected()
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   *  due to the throw; or after entering @c terminate() for any reason
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   *  other than an explicit call to @c terminate().  [Note: This includes
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   *  stack unwinding [15.2].  end note]"
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   *
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   *  2:  "When @c uncaught_exception() is true, throwing an %exception can
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   *  result in a call of @c terminate() (15.5.1)."
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   */
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  bool uncaught_exception() throw();
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} // namespace std
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namespace __gnu_cxx
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{
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  /** A replacement for the standard terminate_handler which prints more
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      information about the terminating exception (if any) on stderr.  Call
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      @code
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        std::set_terminate (__gnu_cxx::__verbose_terminate_handler)
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      @endcode
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      to use.  For more info, see
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      http://gcc.gnu.org/onlinedocs/libstdc++/19_diagnostics/howto.html#4
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  */
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  void __verbose_terminate_handler ();
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} // namespace __gnu_cxx
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} // extern "C++"
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#endif