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) 1998-1999 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/mdb_modapi.h>
30#include <sys/sysinfo.h>
31
32/*
33 * simple_echo dcmd - Demonstrate some simple argument processing by iterating
34 * through the argument array and printing back each argument.
35 */
36static int
37simple_echo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
38{
39	if (flags & DCMD_ADDRSPEC)
40		mdb_printf("You specified address %p\n", addr);
41	else
42		mdb_printf("Current address is %p\n", addr);
43
44	while (argc-- != 0) {
45		if (argv->a_type == MDB_TYPE_STRING)
46			mdb_printf("%s ", argv->a_un.a_str);
47		else
48			mdb_printf("%llr ", argv->a_un.a_val);
49		argv++;
50	}
51
52	mdb_printf("\n");
53	return (DCMD_OK);
54}
55
56/*
57 * vminfo dcmd - Print out the global vminfo structure, nicely formatted.
58 * This function illustrates one of the functions for reading data from
59 * the target program (or core file): mdb_readvar().  The vminfo_t
60 * structure contains cumulative counters for various system virtual
61 * memory statistics.  Each second, these are incremented by the current
62 * values of freemem and the other corresponding statistical counters.
63 */
64/*ARGSUSED*/
65static int
66vminfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
67{
68	vminfo_t vm;
69
70	if ((flags & DCMD_ADDRSPEC) || argc != 0)
71		return (DCMD_USAGE);
72
73	if (mdb_readvar(&vm, "vminfo") == -1) {
74		/*
75		 * If the mdb_warn string does not end in a \n, mdb will
76		 * automatically append the reason for the failure.
77		 */
78		mdb_warn("failed to read vminfo structure");
79		return (DCMD_ERR);
80	}
81
82	mdb_printf("Cumulative memory statistics:\n");
83	mdb_printf("%8llu pages of free memory\n", vm.freemem);
84	mdb_printf("%8llu pages of reserved swap\n", vm.swap_resv);
85	mdb_printf("%8llu pages of allocated swap\n", vm.swap_alloc);
86	mdb_printf("%8llu pages of unreserved swap\n", vm.swap_avail);
87	mdb_printf("%8llu pages of unallocated swap\n", vm.swap_free);
88
89	return (DCMD_OK);
90}
91
92/*
93 * MDB module linkage information:
94 *
95 * We declare a list of structures describing our dcmds, and a function
96 * named _mdb_init to return a pointer to our module information.
97 */
98
99static const mdb_dcmd_t dcmds[] = {
100	{ "simple_echo", "[ args ... ]", "echo back arguments", simple_echo },
101	{ "vminfo", NULL, "print vm information", vminfo },
102	{ NULL }
103};
104
105static const mdb_modinfo_t modinfo = {
106	MDB_API_VERSION, dcmds, NULL
107};
108
109const mdb_modinfo_t *
110_mdb_init(void)
111{
112	return (&modinfo);
113}
114