60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// Support routines for the -*- C++ -*- dynamic memory management.
|
|
// Copyright (C) 1997-2017 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of GCC.
|
|
//
|
|
// GCC is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
//
|
|
// GCC is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// 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;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
#include <bits/c++config.h>
|
|
#include <bits/exception_defines.h>
|
|
#include "new"
|
|
|
|
using std::new_handler;
|
|
using std::bad_alloc;
|
|
|
|
extern "C" void *malloc (std::size_t);
|
|
|
|
_GLIBCXX_WEAK_DEFINITION void *
|
|
operator new (std::size_t sz, const std::nothrow_t&) _GLIBCXX_USE_NOEXCEPT
|
|
{
|
|
void *p;
|
|
|
|
/* malloc (0) is unpredictable; avoid it. */
|
|
if (sz == 0)
|
|
sz = 1;
|
|
|
|
while (__builtin_expect ((p = malloc (sz)) == 0, false))
|
|
{
|
|
new_handler handler = std::get_new_handler ();
|
|
if (! handler)
|
|
return 0;
|
|
__try
|
|
{
|
|
handler ();
|
|
}
|
|
__catch(const bad_alloc&)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return p;
|
|
}
|