102 lines
3.7 KiB
C++
102 lines
3.7 KiB
C++
// The -*- C++ -*- dynamic memory management header.
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// Copyright (C) 1994, 1996, 1997, 1998, 2000, 2001, 2002
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// Free Software Foundation
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// This file is part of GCC.
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//
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// GCC 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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// GCC 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 GCC; 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 new
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* The header @c new defines several functions to manage dynamic memory and
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* handling memory allocation errors; see
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* http://gcc.gnu.org/onlinedocs/libstdc++/18_support/howto.html#4 for more.
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*/
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#ifndef _NEW
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#define _NEW
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#include <cstddef>
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#include <exception>
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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 Exception possibly thrown by @c new.
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*
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* @c bad_alloc (or classes derived from it) is used to report allocation
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* errors from the throwing forms of @c new. */
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class bad_alloc : public exception
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{
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public:
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bad_alloc() 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_alloc() throw();
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};
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struct nothrow_t { };
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extern const nothrow_t nothrow;
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/** If you write your own error handler to be called by @c new, it must
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* be of this type. */
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typedef void (*new_handler)();
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/// Takes a replacement handler as the argument, returns the previous handler.
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new_handler set_new_handler(new_handler) throw();
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} // namespace std
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//@{
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/** These are replaceable signatures:
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* - normal single new and delete (no arguments, throw @c bad_alloc on error)
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* - normal array new and delete (same)
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* - @c nothrow single new and delete (take a @c nothrow argument, return
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* @c NULL on error)
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* - @c nothrow array new and delete (same)
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*
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* Placement new and delete signatures (take a memory address argument,
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* does nothing) may not be replaced by a user's program.
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*/
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void* operator new(std::size_t) throw (std::bad_alloc);
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void* operator new[](std::size_t) throw (std::bad_alloc);
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void operator delete(void*) throw();
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void operator delete[](void*) throw();
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void* operator new(std::size_t, const std::nothrow_t&) throw();
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void* operator new[](std::size_t, const std::nothrow_t&) throw();
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void operator delete(void*, const std::nothrow_t&) throw();
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void operator delete[](void*, const std::nothrow_t&) throw();
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// Default placement versions of operator new.
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inline void* operator new(std::size_t, void* __p) throw() { return __p; }
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inline void* operator new[](std::size_t, void* __p) throw() { return __p; }
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// Default placement versions of operator delete.
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inline void operator delete (void*, void*) throw() { }
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inline void operator delete[](void*, void*) throw() { }
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//@}
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} // extern "C++"
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#endif
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