1 // The -*- C++ -*- dynamic memory management header.
3 // Copyright (C) 1994, 1996, 1997, 1998, 2000, 2001, 2002
4 // Free Software Foundation
6 // This file is part of GCC.
8 // GCC is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2, or (at your option)
13 // GCC is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with GCC; see the file COPYING. If not, write to
20 // the Free Software Foundation, 59 Temple Place - Suite 330,
21 // Boston, MA 02111-1307, USA.
23 // As a special exception, you may use this file as part of a free software
24 // library without restriction. Specifically, if other files instantiate
25 // templates or use macros or inline functions from this file, or you compile
26 // this file and link it with other files to produce an executable, this
27 // file does not by itself cause the resulting executable to be covered by
28 // the GNU General Public License. This exception does not however
29 // invalidate any other reasons why the executable file might be covered by
30 // the GNU General Public License.
33 * The header @c new defines several functions to manage dynamic memory and
34 * handling memory allocation errors; see
35 * http://gcc.gnu.org/onlinedocs/libstdc++/18_support/howto.html#4 for more.
49 * @brief Exception possibly thrown by @c new.
51 * @c bad_alloc (or classes derived from it) is used to report allocation
52 * errors from the throwing forms of @c new. */
53 class bad_alloc : public exception
56 bad_alloc() throw() { }
57 // This declaration is not useless:
58 // http://gcc.gnu.org/onlinedocs/gcc-3.0.2/gcc_6.html#SEC118
59 virtual ~bad_alloc() throw();
63 extern const nothrow_t nothrow;
64 /** If you write your own error handler to be called by @c new, it must
66 typedef void (*new_handler)();
67 /// Takes a replacement handler as the argument, returns the previous handler.
68 new_handler set_new_handler(new_handler) throw();
72 /** These are replaceable signatures:
73 * - normal single new and delete (no arguments, throw @c bad_alloc on error)
74 * - normal array new and delete (same)
75 * - @c nothrow single new and delete (take a @c nothrow argument, return
77 * - @c nothrow array new and delete (same)
79 * Placement new and delete signatures (take a memory address argument,
80 * does nothing) may not be replaced by a user's program.
82 void* operator new(std::size_t) throw (std::bad_alloc);
83 void* operator new[](std::size_t) throw (std::bad_alloc);
84 void operator delete(void*) throw();
85 void operator delete[](void*) throw();
86 void* operator new(std::size_t, const std::nothrow_t&) throw();
87 void* operator new[](std::size_t, const std::nothrow_t&) throw();
88 void operator delete(void*, const std::nothrow_t&) throw();
89 void operator delete[](void*, const std::nothrow_t&) throw();
91 // Default placement versions of operator new.
92 inline void* operator new(std::size_t, void* __p) throw() { return __p; }
93 inline void* operator new[](std::size_t, void* __p) throw() { return __p; }
95 // Default placement versions of operator delete.
96 inline void operator delete (void*, void*) throw() { }
97 inline void operator delete[](void*, void*) throw() { }