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 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 /*
30 * sa_libpool - libpool statistic adapter, collect statistic data provided
31 * by libpool.
32 */
33
34 #include <string.h>
35 #include <locale.h>
36 #include <assert.h>
37
38 #include <pool.h>
39
40 #include "utils.h"
41 #include "poolstat.h"
42
43 typedef int (*prop_walk_cb_t)
44 (pool_conf_t *, pool_elem_t *, const char *, pool_value_t *, void *);
45
46 /* user data used in the property walk callback function. */
47 typedef struct {
48 int ud_result;
49 void* ud_bag;
50 } userdata_cb_t;
51
52 static pool_conf_t *conf;
53 static const char *conf_loc;
54
55 static void update_pset(statistic_bag_t *);
56
57 /*
58 * If not NULL use the passed 'configuration' to access the pool framework,
59 * otherwise create and open a private access point.
60 */
61 void
sa_libpool_init(void * configuration)62 sa_libpool_init(void *configuration)
63 {
64 if (configuration) {
65 conf = configuration;
66 } else {
67 conf_loc = pool_dynamic_location();
68 if ((conf = pool_conf_alloc()) == NULL)
69 die(gettext(ERR_NOMEM));
70 if (pool_conf_open(conf, conf_loc, PO_RDONLY | PO_UPDATE)
71 != PO_SUCCESS)
72 die(gettext(ERR_OPEN_STATIC), conf_loc, get_errstr());
73 }
74 }
75
76 /*ARGSUSED*/
77 void
sa_libpool_update(statistic_bag_t * sbag,int flags)78 sa_libpool_update(statistic_bag_t *sbag, int flags)
79 {
80 static int changed;
81
82 /* The SA_REFRESH flag forces the update of local data structures. */
83 if (flags & SA_REFRESH) {
84 changed = 0;
85 if (pool_conf_update(conf, &changed) != PO_SUCCESS)
86 die(gettext(ERR_CONF_UPDATE), get_errstr());
87 sbag->sb_changed = changed;
88 }
89 if (strcmp(sbag->sb_type, PSET_TYPE_NAME) == 0) {
90 if (changed & POU_PSET || changed & POU_CPU)
91 ((pset_statistic_bag_t *)sbag->bag)->pset_sb_changed =
92 changed;
93 else
94 ((pset_statistic_bag_t *)sbag->bag)->pset_sb_changed =
95 0;
96 update_pset(sbag);
97 } else if (strcmp(sbag->sb_type, POOL_TYPE_NAME) == 0) {
98 return;
99 } else {
100 die(gettext(ERR_UNSUPP_STYPE), sbag->sb_type);
101 }
102 }
103
104 /*
105 * callback function to property walker, copies the property value from
106 * the passed 'pvalue' to the corresponding field in the statistic data bag.
107 */
108 /*ARGSUSED*/
109 static int
populate_userdata_cb(pool_conf_t * unused1,pool_elem_t * unused2,const char * name,pool_value_t * pval,userdata_cb_t * ud)110 populate_userdata_cb(pool_conf_t *unused1, pool_elem_t *unused2,
111 const char *name, pool_value_t *pval, userdata_cb_t *ud)
112 {
113 pset_statistic_bag_t *bag = (pset_statistic_bag_t *)ud->ud_bag;
114
115 ud->ud_result = 0;
116 if (strcmp("pset.min", name) == 0) {
117 ud->ud_result = pool_value_get_uint64(pval, &bag->pset_sb_min);
118 } else if (strcmp("pset.max", name) == 0) {
119 ud->ud_result = pool_value_get_uint64(pval, &bag->pset_sb_max);
120 } else if (strcmp("pset.load", name) == 0) {
121 uint64_t load;
122
123 ud->ud_result = pool_value_get_uint64(pval, &load);
124 bag->pset_sb_load = (double)load / 1000.0;
125 } else if (strcmp("pset.size", name) == 0) {
126 ud->ud_result = pool_value_get_uint64(pval, &bag->pset_sb_size);
127 } else if (strcmp("pset.sys_id", name) == 0) {
128 ud->ud_result = pool_value_get_int64(pval, &bag->pset_sb_sysid);
129 }
130
131 return (0);
132 }
133
134 /*
135 * Update statistic data for the procssor set with the name 'sbag->name'.
136 * Use 'sbag->bag' to store the data.
137 */
138 static void
update_pset(statistic_bag_t * sbag)139 update_pset(statistic_bag_t *sbag)
140 {
141 pool_resource_t *pset_reso;
142 pool_elem_t *pset_elem;
143 userdata_cb_t ud;
144
145 ud.ud_bag = (void *) sbag->bag;
146 if ((pset_reso = pool_get_resource(conf, PSET_TYPE_NAME, sbag->sb_name))
147 == NULL)
148 die(gettext(ERR_STATS_RES_N), sbag->sb_name, get_errstr());
149 if ((pset_elem = pool_resource_to_elem(conf, pset_reso)) == NULL)
150 die(gettext(ERR_STATS_RES_N), sbag->sb_name, get_errstr());
151
152 /* use the property walker to collect the resource properties */
153 if (pool_walk_properties(conf, pset_elem, &ud,
154 (prop_walk_cb_t)populate_userdata_cb) == -1)
155 die(gettext(ERR_STATS_RES_N), sbag->sb_name, get_errstr());
156 }
157