73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
// Support routines for the -*- C++ -*- dynamic memory management.
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2004
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// Free Software Foundation
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//
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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, 51 Franklin Street, Fifth Floor,
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// Boston, MA 02110-1301, USA.
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//
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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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#include <bits/c++config.h>
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#include <cstdlib>
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#include <exception_defines.h>
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#include "new"
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using std::new_handler;
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using std::bad_alloc;
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#if _GLIBCXX_HOSTED
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using std::malloc;
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#else
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// A freestanding C runtime may not provide "malloc" -- but there is no
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// other reasonable way to implement "operator new".
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extern "C" void *malloc (std::size_t);
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#endif
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extern new_handler __new_handler;
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_GLIBCXX_WEAK_DEFINITION void *
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operator new (std::size_t sz) throw (std::bad_alloc)
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{
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void *p;
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/* malloc (0) is unpredictable; avoid it. */
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if (sz == 0)
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sz = 1;
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p = (void *) malloc (sz);
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while (p == 0)
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{
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new_handler handler = __new_handler;
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if (! handler)
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#ifdef __EXCEPTIONS
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throw bad_alloc();
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#else
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std::abort();
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#endif
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handler ();
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p = (void *) malloc (sz);
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}
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return p;
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}
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