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1 | /* |
2 | * lttng-ust-dynamic-type.c | |
3 | * | |
4 | * UST dynamic type implementation. | |
5 | * | |
6 | * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
7 | * | |
8 | * This library is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; only | |
11 | * version 2.1 of the License. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * Lesser General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public | |
19 | * License along with this library; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #define _GNU_SOURCE | |
24 | #include <stdio.h> | |
25 | #include <stdint.h> | |
26 | #include <stddef.h> | |
27 | #include <inttypes.h> | |
28 | ||
29 | #include <helper.h> | |
30 | #include <lttng/ust-dynamic-type.h> | |
31 | ||
32 | static const struct lttng_enum_entry dt_enum[_NR_LTTNG_UST_DYNAMIC_TYPES] = { | |
33 | [LTTNG_UST_DYNAMIC_TYPE_NONE] = { | |
34 | .start = 0, | |
35 | .end = 0, | |
36 | .string = "_none", | |
37 | }, | |
38 | [LTTNG_UST_DYNAMIC_TYPE_S8] = { | |
39 | .start = 1, | |
40 | .end = 1, | |
41 | .string = "_int8", | |
42 | }, | |
43 | [LTTNG_UST_DYNAMIC_TYPE_S16] = { | |
44 | .start = 2, | |
45 | .end = 2, | |
46 | .string = "_int16", | |
47 | }, | |
48 | [LTTNG_UST_DYNAMIC_TYPE_S32] = { | |
49 | .start = 3, | |
50 | .end = 3, | |
51 | .string = "_int32", | |
52 | }, | |
53 | [LTTNG_UST_DYNAMIC_TYPE_S64] = { | |
54 | .start = 4, | |
55 | .end = 4, | |
56 | .string = "_int64", | |
57 | }, | |
58 | [LTTNG_UST_DYNAMIC_TYPE_U8] = { | |
59 | .start = 5, | |
60 | .end = 5, | |
61 | .string = "_uint8", | |
62 | }, | |
63 | [LTTNG_UST_DYNAMIC_TYPE_U16] = { | |
64 | .start = 6, | |
65 | .end = 6, | |
66 | .string = "_uint16", | |
67 | }, | |
68 | [LTTNG_UST_DYNAMIC_TYPE_U32] = { | |
69 | .start = 7, | |
70 | .end = 7, | |
71 | .string = "_uint32", | |
72 | }, | |
73 | [LTTNG_UST_DYNAMIC_TYPE_U64] = { | |
74 | .start = 8, | |
75 | .end = 8, | |
76 | .string = "_uint64", | |
77 | }, | |
78 | [LTTNG_UST_DYNAMIC_TYPE_FLOAT] = { | |
79 | .start = 9, | |
80 | .end = 9, | |
81 | .string = "_float", | |
82 | }, | |
83 | [LTTNG_UST_DYNAMIC_TYPE_DOUBLE] = { | |
84 | .start = 10, | |
85 | .end = 10, | |
86 | .string = "_double", | |
87 | }, | |
88 | [LTTNG_UST_DYNAMIC_TYPE_STRING] = { | |
89 | .start = 11, | |
90 | .end = 11, | |
91 | .string = "_string", | |
92 | }, | |
93 | }; | |
94 | ||
95 | static const struct lttng_enum_desc dt_enum_desc = { | |
96 | .name = "dynamic_type_enum", | |
97 | .entries = dt_enum, | |
98 | .nr_entries = LTTNG_ARRAY_SIZE(dt_enum), | |
99 | }; | |
100 | ||
101 | const struct lttng_event_field dt_var_fields[_NR_LTTNG_UST_DYNAMIC_TYPES] = { | |
102 | [LTTNG_UST_DYNAMIC_TYPE_NONE] = { | |
103 | .name = "none", | |
104 | .type = { | |
105 | .atype = atype_struct, | |
106 | .u._struct.nr_fields = 0, /* empty struct. */ | |
107 | }, | |
108 | .nowrite = 0, | |
109 | }, | |
110 | [LTTNG_UST_DYNAMIC_TYPE_S8] = { | |
111 | .name = "int8", | |
112 | .type = __type_integer(int8_t, BYTE_ORDER, 10, none), | |
113 | .nowrite = 0, | |
114 | }, | |
115 | [LTTNG_UST_DYNAMIC_TYPE_S16] = { | |
116 | .name = "int16", | |
117 | .type = __type_integer(int16_t, BYTE_ORDER, 10, none), | |
118 | .nowrite = 0, | |
119 | }, | |
120 | [LTTNG_UST_DYNAMIC_TYPE_S32] = { | |
121 | .name = "int32", | |
122 | .type = __type_integer(int32_t, BYTE_ORDER, 10, none), | |
123 | .nowrite = 0, | |
124 | }, | |
125 | [LTTNG_UST_DYNAMIC_TYPE_S64] = { | |
126 | .name = "int64", | |
127 | .type = __type_integer(int64_t, BYTE_ORDER, 10, none), | |
128 | .nowrite = 0, | |
129 | }, | |
130 | [LTTNG_UST_DYNAMIC_TYPE_U8] = { | |
131 | .name = "uint8", | |
132 | .type = __type_integer(uint8_t, BYTE_ORDER, 10, none), | |
133 | .nowrite = 0, | |
134 | }, | |
135 | [LTTNG_UST_DYNAMIC_TYPE_U16] = { | |
136 | .name = "uint16", | |
137 | .type = __type_integer(uint16_t, BYTE_ORDER, 10, none), | |
138 | .nowrite = 0, | |
139 | }, | |
140 | [LTTNG_UST_DYNAMIC_TYPE_U32] = { | |
141 | .name = "uint32", | |
142 | .type = __type_integer(uint32_t, BYTE_ORDER, 10, none), | |
143 | .nowrite = 0, | |
144 | }, | |
145 | [LTTNG_UST_DYNAMIC_TYPE_U64] = { | |
146 | .name = "uint64", | |
147 | .type = __type_integer(uint64_t, BYTE_ORDER, 10, none), | |
148 | .nowrite = 0, | |
149 | }, | |
150 | [LTTNG_UST_DYNAMIC_TYPE_FLOAT] = { | |
151 | .name = "float", | |
152 | .type = __type_float(float), | |
153 | .nowrite = 0, | |
154 | }, | |
155 | [LTTNG_UST_DYNAMIC_TYPE_DOUBLE] = { | |
156 | .name = "double", | |
157 | .type = __type_float(double), | |
158 | .nowrite = 0, | |
159 | }, | |
160 | [LTTNG_UST_DYNAMIC_TYPE_STRING] = { | |
161 | .name = "string", | |
162 | .type = { | |
163 | .atype = atype_string, | |
164 | .u.basic.string.encoding = lttng_encode_UTF8, | |
165 | }, | |
166 | .nowrite = 0, | |
167 | }, | |
168 | }; | |
169 | ||
170 | static const struct lttng_event_field dt_enum_field = { | |
171 | .name = NULL, | |
172 | .type.atype = atype_enum, | |
173 | .type.u.basic.enumeration.desc = &dt_enum_desc, | |
174 | .type.u.basic.enumeration.container_type = { | |
175 | .size = sizeof(char) * CHAR_BIT, | |
176 | .alignment = lttng_alignof(char) * CHAR_BIT, | |
177 | .signedness = lttng_is_signed_type(char), | |
178 | .reverse_byte_order = 0, | |
179 | .base = 10, | |
180 | .encoding = lttng_encode_none, | |
181 | }, | |
182 | .nowrite = 0, | |
183 | }; | |
184 | ||
185 | const struct lttng_event_field *lttng_ust_dynamic_type_field(int64_t value) | |
186 | { | |
187 | if (value >= _NR_LTTNG_UST_DYNAMIC_TYPES || value < 0) | |
188 | return NULL; | |
189 | return &dt_var_fields[value]; | |
190 | } | |
191 | ||
192 | int lttng_ust_dynamic_type_choices(size_t *nr_choices, const struct lttng_event_field **choices) | |
193 | { | |
194 | *nr_choices = _NR_LTTNG_UST_DYNAMIC_TYPES; | |
195 | *choices = dt_var_fields; | |
196 | return 0; | |
197 | } | |
198 | ||
199 | const struct lttng_event_field *lttng_ust_dynamic_type_tag_field(void) | |
200 | { | |
201 | return &dt_enum_field; | |
202 | } |