summaryrefslogtreecommitdiff
path: root/sysdeps/generic/sbrk.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/generic/sbrk.c')
-rw-r--r--sysdeps/generic/sbrk.c56
1 files changed, 0 insertions, 56 deletions
diff --git a/sysdeps/generic/sbrk.c b/sysdeps/generic/sbrk.c
deleted file mode 100644
index 0df60076cc..0000000000
--- a/sysdeps/generic/sbrk.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/* Copyright (C) 1991,1995,1996,1997,2000,2002 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 <unistd.h>
-#include <errno.h>
-
-/* Defined in brk.c. */
-extern void *__curbrk;
-extern int __brk (void *addr);
-
-/* Defined in init-first.c. */
-extern int __libc_multiple_libcs attribute_hidden;
-
-/* Extend the process's data space by INCREMENT.
- If INCREMENT is negative, shrink data space by - INCREMENT.
- Return start of new space allocated, or -1 for errors. */
-void *
-__sbrk (intptr_t increment)
-{
- void *oldbrk;
-
- /* If this is not part of the dynamic library or the library is used
- via dynamic loading in a statically linked program update
- __curbrk from the kernel's brk value. That way two separate
- instances of __brk and __sbrk can share the heap, returning
- interleaved pieces of it. */
- if (__curbrk == NULL || __libc_multiple_libcs)
- if (__brk (0) < 0) /* Initialize the break. */
- return (void *) -1;
-
- if (increment == 0)
- return __curbrk;
-
- oldbrk = __curbrk;
- if (__brk (oldbrk + increment) < 0)
- return (void *) -1;
-
- return oldbrk;
-}
-libc_hidden_def (__sbrk)
-weak_alias (__sbrk, sbrk)