Libc-262.tar.gz

[apple/libc.git] / mach.subproj / sbrk.c

diff --git a/mach.subproj/sbrk.c b/mach.subproj/sbrk.c
deleted file mode 100644 (file)
index 5b47642..0000000
--- a/mach.subproj/sbrk.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- *     File:   sbrk.c
- *
- *     Unix compatibility for sbrk system call.
- *
- * HISTORY
- * 09-Mar-90  Gregg Kellogg (gk) at NeXT.
- *     include <kern/mach_interface.h> instead of <kern/mach.h>
- *
- * 14-Feb-89  Avadis Tevanian (avie) at NeXT.
- *     Total rewrite using a fixed area of VM from break region.
- */
-
-#include <mach/mach.h>         /* for vm_allocate, vm_offset_t */
-#include <mach/vm_statistics.h>
-#include <sys/types.h>         /* for caddr_t */
-
-static int sbrk_needs_init = TRUE;
-static vm_size_t sbrk_region_size = 4*1024*1024; /* Well, what should it be? */
-static vm_address_t sbrk_curbrk;
-
-caddr_t sbrk(size)
-       int     size;
-{
-       vm_offset_t     addr;
-       kern_return_t   ret;
-       caddr_t         ocurbrk;
-       extern int      end;
-
-       if (sbrk_needs_init) {
-               sbrk_needs_init = FALSE;
-               /*
-                *      Allocate a big region to simulate break region.
-                */
-               ret =  vm_allocate(mach_task_self(), &sbrk_curbrk, sbrk_region_size,
-                                 VM_MAKE_TAG(VM_MEMORY_SBRK)|TRUE);
-               if (ret != KERN_SUCCESS)
-                       return((caddr_t)-1);
-       }
-       
-       if (size <= 0)
-               return((caddr_t)sbrk_curbrk);
-       sbrk_curbrk += size;
-       sbrk_region_size -= size;
-       if (sbrk_region_size < 0)
-               return((caddr_t)-1);
-       return((caddr_t)(sbrk_curbrk - size));
-}
-
-caddr_t brk(x)
-       caddr_t x;
-{
-       return((caddr_t)-1);
-}
-