usr/src/lib/libmtmalloc/tests/wideload.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1998 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <sys/types.h>
  32 #include <limits.h>
  33
  34 /*
  35  * This file tests for large (2GB and greater) allocations.
  36  *
  37  * cc -O -o wideload wideload.c -lmtmalloc
  38  */
  39
  40 main(int argc, char ** argv)
  41 {
  42         char * foo;
  43         char * bar;
  44         size_t request = LONG_MAX;
  45
  46         foo = malloc(0); /* prime the pump */
  47
  48         foo = (char *)sbrk(0);
  49         printf ("Before big malloc brk is %p request %d\n", foo, request);
  50         foo = malloc(request + 100);
  51         bar = (char *)sbrk(0);
  52         printf ("After big malloc brk is %p\n", bar);
  53 }