1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1990, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/types.h>
33 #include <sys/sysctl.h>
34
35 #include <stddef.h>
36
37 #include "ps.h"
38
39 fixpt_t ccpu; /* kernel _ccpu variable */
40 int nlistread; /* if nlist already read. */
41 unsigned long mempages; /* number of pages of phys. memory */
42 int fscale; /* kernel _fscale variable */
43
44 int
donlist(void)45 donlist(void)
46 {
47 size_t oldlen;
48
49 oldlen = sizeof(ccpu);
50 if (sysctlbyname("kern.ccpu", &ccpu, &oldlen, NULL, 0) == -1)
51 return (1);
52 oldlen = sizeof(fscale);
53 if (sysctlbyname("kern.fscale", &fscale, &oldlen, NULL, 0) == -1)
54 return (1);
55 oldlen = sizeof(mempages);
56 if (sysctlbyname("hw.availpages", &mempages, &oldlen, NULL, 0) == -1)
57 return (1);
58 nlistread = 1;
59 return (0);
60 }
61