* elf/dl-tls.c (__tls_get_addr): After calling _dl_update_slotinfo
[glibc.git] / malloc / morecore.c
blob0a66ef5a85889be773daff84ac85a9dc825a1c17
1 /* Copyright (C) 1991,92,93,94,95,97,2002,2004 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #ifndef _MALLOC_INTERNAL
20 #define _MALLOC_INTERNAL
21 #include <malloc.h>
22 #endif
24 #ifndef __GNU_LIBRARY__
25 #define __sbrk sbrk
26 #endif
28 #ifdef __GNU_LIBRARY__
29 /* It is best not to declare this and cast its result on foreign operating
30 systems with potentially hostile include files. */
32 #include <stddef.h>
33 #include <stdlib.h>
34 extern __malloc_ptr_t __sbrk (ptrdiff_t increment) __THROW;
35 libc_hidden_proto (__sbrk)
36 #endif
38 #ifndef NULL
39 #define NULL 0
40 #endif
42 /* Allocate INCREMENT more bytes of data space,
43 and return the start of data space, or NULL on errors.
44 If INCREMENT is negative, shrink data space. */
45 __malloc_ptr_t
46 __default_morecore (increment)
47 __malloc_ptrdiff_t increment;
49 __malloc_ptr_t result = (__malloc_ptr_t) __sbrk (increment);
50 if (result == (__malloc_ptr_t) -1)
51 return NULL;
52 return result;
54 libc_hidden_def (__default_morecore)