2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
35 * usemem: allocate and lock a chunk of memory effectively removing
36 * it from the usable physical memory range
45 #include <sys/types.h>
53 fprintf(stderr,"Usage: %s <mb>\n", argv0);
60 printf("*** signal\n");
64 main(int argc, char *argv[])
69 if (argc!=2) usage(argv[0]);
71 if (mb<=0) usage(argv[0]);
73 buf=malloc(mb*1024*1024);
78 if (mlock(buf,mb*1024*1024)) {
83 printf("%s: %d mb locked - interrupt to release\n", argv[0], mb);
84 signal(SIGINT, signalled);
86 printf("%s: %d mb unlocked\n", argv[0], mb);