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53569322 MD |
1 | /* |
2 | * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; version 2.1 of | |
7 | * the License. | |
8 | * | |
9 | * This library is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU Lesser General Public | |
15 | * License along with this library; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | ||
fb31eb73 | 19 | #include <stdint.h> |
53569322 | 20 | #include <stdio.h> |
53569322 | 21 | #include <string.h> |
fb31eb73 | 22 | #include <unistd.h> |
53569322 MD |
23 | |
24 | /* Internal UST API: ust-variant.h */ | |
25 | #include <lttng/ust-variant.h> | |
26 | #include <lttng/ust-events.h> | |
27 | #include <helper.h> | |
28 | ||
29 | #define NR_ENTRIES 5 | |
30 | ||
31 | static const struct lttng_enum_entry myentries[NR_ENTRIES] = { | |
32 | [0] = { | |
33 | .start = 0, | |
34 | .end = 0, | |
35 | .string = "_mystring", | |
36 | }, | |
37 | [1] = { | |
38 | .start = 1, | |
39 | .end = 1, | |
40 | .string = "_myint32", | |
41 | }, | |
42 | [2] = { | |
43 | .start = 2, | |
44 | .end = 2, | |
45 | .string = "_myuint16", | |
46 | }, | |
47 | [3] = { | |
48 | .start = 3, | |
49 | .end = 3, | |
50 | .string = "_mychar", | |
51 | }, | |
52 | [4] = { | |
53 | .start = 4, | |
54 | .end = 4, | |
55 | .string = "_mylonglong", | |
56 | }, | |
57 | }; | |
58 | ||
59 | static const struct lttng_enum_desc myenum_desc = { | |
60 | .name = "myenum", | |
61 | .entries = myentries, | |
62 | .nr_entries = LTTNG_ARRAY_SIZE(myentries), | |
63 | }; | |
64 | ||
65 | const struct lttng_event_field myvarfields[NR_ENTRIES] = { | |
66 | [0] = { | |
67 | .name = "mystring", | |
68 | .type = { | |
69 | .atype = atype_string, | |
70 | .u.basic.string.encoding = lttng_encode_UTF8, | |
71 | }, | |
72 | .nowrite = 0, | |
73 | }, | |
74 | [1] = { | |
75 | .name = "myint32", | |
76 | .type = __type_integer(int32_t, BYTE_ORDER, 10, none), | |
77 | .nowrite = 0, | |
78 | }, | |
79 | [2] = { | |
80 | .name = "myuint16", | |
81 | .type = __type_integer(uint16_t, BYTE_ORDER, 10, none), | |
82 | .nowrite = 0, | |
83 | }, | |
84 | [3] = { | |
85 | .name = "mychar", | |
86 | .type = __type_integer(char, BYTE_ORDER, 10, none), | |
87 | .nowrite = 0, | |
88 | }, | |
89 | [4] = { | |
90 | .name = "mylonglong", | |
91 | .type = __type_integer(long long, BYTE_ORDER, 10, none), | |
92 | .nowrite = 0, | |
93 | }, | |
94 | }; | |
95 | ||
96 | static const struct lttng_event_field *get_field(const struct lttng_ust_type_variant *variant, | |
97 | int64_t value) | |
98 | { | |
99 | if (value >= NR_ENTRIES || value < 0) | |
100 | return NULL; | |
101 | return &myvarfields[value]; | |
102 | } | |
103 | ||
104 | static int get_choices(const struct lttng_ust_type_variant *variant, | |
105 | size_t *nr_choices, const struct lttng_event_field **choices) | |
106 | { | |
107 | *nr_choices = NR_ENTRIES; | |
108 | *choices = myvarfields; | |
109 | return 0; | |
110 | } | |
111 | ||
112 | static const struct lttng_event_field myfields[]; | |
113 | ||
114 | static const struct lttng_ust_type_variant myvariant = { | |
115 | .tag = &myfields[0], | |
116 | .get_field = get_field, | |
117 | .get_choices = get_choices, | |
118 | .free_priv = NULL, | |
119 | .priv = NULL, | |
120 | }; | |
121 | ||
122 | /* dummy event */ | |
123 | ||
124 | static void __event_probe__myprobe___myevent(void * __tp_data) | |
125 | { | |
126 | } | |
127 | ||
128 | static const struct lttng_event_field myfields[] = { | |
129 | [0] = { | |
130 | .name = "mytag", | |
218deb69 MD |
131 | .type.atype = atype_enum_nestable, |
132 | .type.u.enum_nestable.desc = &myenum_desc, | |
133 | .type.u.enum_nestable.container_type = | |
134 | __LTTNG_COMPOUND_LITERAL(struct lttng_type, | |
135 | __type_integer(char, BYTE_ORDER, 10, none)), | |
53569322 MD |
136 | .nowrite = 0, |
137 | }, | |
138 | [1] = { | |
139 | .name = "myfield", | |
140 | .type = { | |
218deb69 MD |
141 | .atype = atype_variant_nestable, |
142 | .u.variant_nestable = &myvariant, | |
53569322 MD |
143 | }, |
144 | .nowrite = 0, | |
145 | }, | |
146 | }; | |
147 | ||
148 | static const struct lttng_event_desc myevent_desc = { | |
149 | .name = "myprobe:myevent", | |
150 | .probe_callback = (void (*)(void)) &__event_probe__myprobe___myevent, | |
151 | .ctx = NULL, | |
152 | .fields = myfields, | |
153 | .nr_fields = LTTNG_ARRAY_SIZE(myfields), | |
154 | .loglevel = NULL, | |
155 | .signature = "mysig", | |
156 | .u = { | |
157 | .ext = { | |
158 | .model_emf_uri = NULL, | |
159 | }, | |
160 | }, | |
161 | }; | |
162 | ||
163 | static const struct lttng_event_desc *event_desc_array[] = { | |
164 | [0] = &myevent_desc, | |
165 | }; | |
166 | ||
167 | /* Dummy probe. */ | |
168 | ||
169 | static struct lttng_probe_desc __probe_desc___myprobe = { | |
170 | .provider = "myprobe", | |
171 | .event_desc = event_desc_array, | |
172 | .nr_events = LTTNG_ARRAY_SIZE(event_desc_array), | |
173 | .head = { NULL, NULL }, | |
174 | .lazy_init_head = { NULL, NULL }, | |
175 | .lazy = 0, | |
176 | .major = LTTNG_UST_PROVIDER_MAJOR, | |
177 | .minor = LTTNG_UST_PROVIDER_MINOR, | |
178 | }; | |
179 | ||
180 | int main(int argc, char **argv) | |
181 | { | |
182 | int ret; | |
183 | ||
184 | ret = lttng_probe_register(&__probe_desc___myprobe); | |
185 | if (ret) | |
186 | abort(); | |
187 | sleep(5); | |
188 | lttng_probe_unregister(&__probe_desc___myprobe); | |
189 | ||
190 | return 0; | |
191 | } |