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