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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /malloc/morecore.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
Diffstat (limited to 'malloc/morecore.c')
-rw-r--r--malloc/morecore.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/malloc/morecore.c b/malloc/morecore.c
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--- /dev/null
+++ b/malloc/morecore.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1991,92,93,94,95,97,2002,2004 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. */
+
+#ifndef _MALLOC_INTERNAL
+#define _MALLOC_INTERNAL
+#include <malloc.h>
+#endif
+
+#ifndef __GNU_LIBRARY__
+#define __sbrk sbrk
+#endif
+
+#ifdef __GNU_LIBRARY__
+/* It is best not to declare this and cast its result on foreign operating
+ systems with potentially hostile include files. */
+
+#include <stddef.h>
+#include <stdlib.h>
+extern __malloc_ptr_t __sbrk (ptrdiff_t increment) __THROW;
+libc_hidden_proto (__sbrk)
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+/* Allocate INCREMENT more bytes of data space,
+ and return the start of data space, or NULL on errors.
+ If INCREMENT is negative, shrink data space. */
+__malloc_ptr_t
+__default_morecore (increment)
+ __malloc_ptrdiff_t increment;
+{
+ __malloc_ptr_t result = (__malloc_ptr_t) __sbrk (increment);
+ if (result == (__malloc_ptr_t) -1)
+ return NULL;
+ return result;
+}
+libc_hidden_def (__default_morecore)