glibc/malloc/set-freeres.c

46 lines
1.4 KiB
C

/* Copyright (C) 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <atomicity.h>
#include <stdlib.h>
#include <set-hooks.h>
#include <libc-internal.h>
#ifdef USE_IN_LIBIO
# include "../libio/libioP.h"
#endif
DEFINE_HOOK (__libc_subfreeres, (void));
void
__libc_freeres (void)
{
/* This function might be called from different places. So better
protect for multiple executions since these are fatal. */
static long int already_called;
if (compare_and_swap (&already_called, 0, 1))
{
#ifdef USE_IN_LIBIO
_IO_cleanup ();
#endif
RUN_HOOK (__libc_subfreeres, ());
}
}