1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20
21 #include "stats/stats.h"
22 #include "mgmt/mgmt.h"
23 #include "sysinit/sysinit.h"
24 #include "stat_mgmt/stat_mgmt.h"
25 #include "stat_mgmt/stat_mgmt_impl.h"
26 #include "stat_mgmt/stat_mgmt_config.h"
27
28 struct mynewt_stat_mgmt_walk_arg {
29 stat_mgmt_foreach_entry_fn *cb;
30 void *arg;
31 };
32
33 int
stat_mgmt_impl_get_group(int idx,const char ** out_name)34 stat_mgmt_impl_get_group(int idx, const char **out_name)
35 {
36 const struct stats_hdr *cur;
37 int i;
38 int rc;
39
40 rc = MGMT_ERR_ENOENT;
41
42 cur = NULL;
43 i = 0;
44 STAILQ_FOREACH(cur, &g_stats_registry, s_next) {
45 if (i == idx) {
46 rc = 0;
47 break;
48 }
49 i++;
50 }
51
52 if (!rc) {
53 *out_name = cur->s_name;
54 }
55
56 return rc;
57 }
58
59 static int
mynewt_stat_mgmt_walk_cb(struct stats_hdr * hdr,void * arg,char * name,uint16_t off)60 mynewt_stat_mgmt_walk_cb(struct stats_hdr *hdr, void *arg,
61 char *name, uint16_t off)
62 {
63 struct mynewt_stat_mgmt_walk_arg *walk_arg;
64 struct stat_mgmt_entry entry;
65 void *stat_val;
66
67 walk_arg = arg;
68
69 stat_val = (uint8_t *)hdr + off;
70 switch (hdr->s_size) {
71 case sizeof (uint16_t):
72 entry.value = *(uint16_t *) stat_val;
73 break;
74 case sizeof (uint32_t):
75 entry.value = *(uint32_t *) stat_val;
76 break;
77 case sizeof (uint64_t):
78 entry.value = *(uint64_t *) stat_val;
79 break;
80 default:
81 return MGMT_ERR_EUNKNOWN;
82 }
83 entry.name = name;
84
85 return walk_arg->cb(&entry, walk_arg->arg);
86 }
87
88 int
stat_mgmt_impl_foreach_entry(const char * group_name,stat_mgmt_foreach_entry_fn * cb,void * arg)89 stat_mgmt_impl_foreach_entry(const char *group_name,
90 stat_mgmt_foreach_entry_fn *cb,
91 void *arg)
92 {
93 struct mynewt_stat_mgmt_walk_arg walk_arg;
94 struct stats_hdr *hdr;
95
96 hdr = stats_group_find(group_name);
97 if (hdr == NULL) {
98 return MGMT_ERR_ENOENT;
99 }
100
101 walk_arg = (struct mynewt_stat_mgmt_walk_arg) {
102 .cb = cb,
103 .arg = arg,
104 };
105
106 return stats_walk(hdr, mynewt_stat_mgmt_walk_cb, &walk_arg);
107 }
108
109 void
stat_mgmt_module_init(void)110 stat_mgmt_module_init(void)
111 {
112 /* Ensure this function only gets called by sysinit. */
113 SYSINIT_ASSERT_ACTIVE();
114
115 stat_mgmt_register_group();
116 }
117
