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 */
36 static int
simple_echo(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)37 simple_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*/
65 static int
vminfo(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)66 vminfo(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
99 static 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
105 static const mdb_modinfo_t modinfo = {
106 MDB_API_VERSION, dcmds, NULL
107 };
108
109 const mdb_modinfo_t *
_mdb_init(void)110 _mdb_init(void)
111 {
112 return (&modinfo);
113 }
114