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authorEric Andersen <andersen@codepoet.org>2001-01-11 11:42:17 +0000
committerEric Andersen <andersen@codepoet.org>2001-01-11 11:42:17 +0000
commitae97a89e1a1a9833080dccc81f6cd26784e1b964 (patch)
tree6ff1ddc7e3980591c7fd0bbd5d9b8ac82da12886 /libc/stdlib/malloc-930716/valloc.c
parentabdc3e4d06db2b9d93c509774fc7c4fde918ec8e (diff)
A large update from Manuel Novoa III <mnovoa3@bellsouth.net>.
Diffstat (limited to 'libc/stdlib/malloc-930716/valloc.c')
-rw-r--r--libc/stdlib/malloc-930716/valloc.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/libc/stdlib/malloc-930716/valloc.c b/libc/stdlib/malloc-930716/valloc.c
new file mode 100644
index 000000000..dad12a1d2
--- /dev/null
+++ b/libc/stdlib/malloc-930716/valloc.c
@@ -0,0 +1,62 @@
+/* Allocate memory on a page boundary.
+ Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+This 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.
+
+ The author may be reached (Email) at the address mike@ai.mit.edu,
+ or (US mail) as Mike Haertel c/o Free Software Foundation. */
+
+#include <stdlib.h>
+#include "malloc.h"
+
+#ifdef emacs
+#include "config.h"
+#endif
+
+#ifdef __GNU_LIBRARY__
+extern size_t __getpagesize __P ((void));
+#else
+#ifndef USG
+extern size_t getpagesize __P ((void));
+#define __getpagesize() getpagesize()
+#else
+#include <sys/param.h>
+#ifdef EXEC_PAGESIZE
+#define __getpagesize() EXEC_PAGESIZE
+#else /* No EXEC_PAGESIZE. */
+#ifdef NBPG
+#ifndef CLSIZE
+#define CLSIZE 1
+#endif /* No CLSIZE. */
+#define __getpagesize() (NBPG * CLSIZE)
+#else /* No NBPG. */
+#define __getpagesize() NBPC
+#endif /* NBPG. */
+#endif /* EXEC_PAGESIZE. */
+#endif /* USG. */
+#endif
+
+static size_t pagesize;
+
+__ptr_t
+valloc (size)
+ size_t size;
+{
+ if (pagesize == 0)
+ pagesize = __getpagesize ();
+
+ return memalign (pagesize, size);
+}