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9843982d JD |
1 | /* |
2 | * ctf_events.c | |
3 | * | |
4 | * Babeltrace Library | |
5 | * | |
6 | * Copyright 2011-2012 EfficiOS Inc. and Linux Foundation | |
7 | * | |
8 | * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
9 | * Julien Desfossez <julien.desfossez@efficios.com> | |
10 | * | |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
17 | * | |
18 | * The above copyright notice and this permission notice shall be included in | |
19 | * all copies or substantial portions of the Software. | |
20 | */ | |
21 | ||
22 | #include <babeltrace/babeltrace.h> | |
23 | #include <babeltrace/format.h> | |
24 | #include <babeltrace/ctf/events.h> | |
25 | #include <babeltrace/ctf-ir/metadata.h> | |
26 | #include <glib.h> | |
27 | ||
28 | /* | |
29 | * thread local storage to store the last error that occured | |
30 | * while reading a field, this variable must be accessed by | |
31 | * bt_ctf_field_error only | |
32 | */ | |
33 | __thread int bt_ctf_last_field_error = 0; | |
34 | ||
35 | struct definition *bt_ctf_get_top_level_scope(struct bt_ctf_event *event, | |
36 | enum bt_ctf_scope scope) | |
37 | { | |
38 | struct definition *tmp = NULL; | |
39 | ||
40 | switch (scope) { | |
41 | case BT_TRACE_PACKET_HEADER: | |
42 | if (!event->stream) | |
43 | goto error; | |
44 | if (event->stream->trace_packet_header) | |
45 | tmp = &event->stream->trace_packet_header->p; | |
46 | break; | |
47 | case BT_STREAM_PACKET_CONTEXT: | |
48 | if (!event->stream) | |
49 | goto error; | |
50 | if (event->stream->stream_packet_context) | |
51 | tmp = &event->stream->stream_packet_context->p; | |
52 | break; | |
53 | case BT_STREAM_EVENT_HEADER: | |
54 | if (!event->stream) | |
55 | goto error; | |
56 | if (event->stream->stream_event_header) | |
57 | tmp = &event->stream->stream_event_header->p; | |
58 | break; | |
59 | case BT_STREAM_EVENT_CONTEXT: | |
60 | if (!event->stream) | |
61 | goto error; | |
62 | if (event->stream->stream_event_context) | |
63 | tmp = &event->stream->stream_event_context->p; | |
64 | break; | |
65 | case BT_EVENT_CONTEXT: | |
66 | if (!event->event) | |
67 | goto error; | |
68 | if (event->event->event_context) | |
69 | tmp = &event->event->event_context->p; | |
70 | break; | |
71 | case BT_EVENT_FIELDS: | |
72 | if (!event->event) | |
73 | goto error; | |
74 | if (event->event->event_fields) | |
75 | tmp = &event->event->event_fields->p; | |
76 | break; | |
77 | } | |
78 | return tmp; | |
79 | ||
80 | error: | |
81 | return NULL; | |
82 | } | |
83 | ||
84 | struct definition *bt_ctf_get_field(struct bt_ctf_event *event, | |
85 | struct definition *scope, | |
86 | const char *field) | |
87 | { | |
88 | struct definition *def; | |
89 | ||
90 | if (scope) { | |
91 | def = lookup_definition(scope, field); | |
92 | if (bt_ctf_field_type(def) == CTF_TYPE_VARIANT) { | |
93 | struct definition_variant *variant_definition; | |
94 | variant_definition = container_of(def, | |
95 | struct definition_variant, p); | |
96 | return variant_definition->current_field; | |
97 | } | |
98 | return def; | |
99 | } | |
100 | return NULL; | |
101 | } | |
102 | ||
103 | struct definition *bt_ctf_get_index(struct bt_ctf_event *event, | |
104 | struct definition *field, | |
105 | unsigned int index) | |
106 | { | |
107 | struct definition *ret = NULL; | |
108 | ||
109 | if (bt_ctf_field_type(field) == CTF_TYPE_ARRAY) { | |
110 | struct definition_array *array_definition; | |
111 | array_definition = container_of(field, | |
112 | struct definition_array, p); | |
113 | ret = array_index(array_definition, index); | |
114 | } else if (bt_ctf_field_type(field) == CTF_TYPE_SEQUENCE) { | |
115 | struct definition_sequence *sequence_definition; | |
116 | sequence_definition = container_of(field, | |
117 | struct definition_sequence, p); | |
118 | ret = sequence_index(sequence_definition, index); | |
119 | } | |
120 | return ret; | |
121 | } | |
122 | ||
123 | const char *bt_ctf_event_name(struct bt_ctf_event *event) | |
124 | { | |
125 | struct ctf_event *event_class; | |
126 | struct ctf_stream_class *stream_class; | |
127 | ||
128 | if (!event) | |
129 | return NULL; | |
130 | stream_class = event->stream->stream_class; | |
131 | event_class = g_ptr_array_index(stream_class->events_by_id, | |
132 | event->stream->event_id); | |
133 | return g_quark_to_string(event_class->name); | |
134 | } | |
135 | ||
136 | const char *bt_ctf_field_name(const struct definition *def) | |
137 | { | |
138 | if (def) | |
139 | return g_quark_to_string(def->name); | |
140 | return NULL; | |
141 | } | |
142 | ||
143 | enum ctf_type_id bt_ctf_field_type(struct definition *def) | |
144 | { | |
145 | if (def) | |
146 | return def->declaration->id; | |
147 | return CTF_TYPE_UNKNOWN; | |
148 | } | |
149 | ||
150 | int bt_ctf_get_field_list(struct bt_ctf_event *event, | |
151 | struct definition *scope, | |
152 | struct definition const * const **list, | |
153 | unsigned int *count) | |
154 | { | |
155 | switch (bt_ctf_field_type(scope)) { | |
156 | case CTF_TYPE_INTEGER: | |
157 | case CTF_TYPE_FLOAT: | |
158 | case CTF_TYPE_STRING: | |
159 | case CTF_TYPE_ENUM: | |
160 | goto error; | |
161 | case CTF_TYPE_STRUCT: | |
162 | { | |
163 | struct definition_struct *def_struct; | |
164 | ||
165 | def_struct = container_of(scope, struct definition_struct, p); | |
166 | if (!def_struct) | |
167 | goto error; | |
168 | if (def_struct->fields->pdata) { | |
169 | *list = (struct definition const* const*) def_struct->fields->pdata; | |
170 | *count = def_struct->fields->len; | |
171 | goto end; | |
172 | } else { | |
173 | goto error; | |
174 | } | |
175 | } | |
176 | case CTF_TYPE_UNTAGGED_VARIANT: | |
177 | goto error; | |
178 | case CTF_TYPE_VARIANT: | |
179 | { | |
180 | struct definition_variant *def_variant; | |
181 | ||
182 | def_variant = container_of(scope, struct definition_variant, p); | |
183 | if (!def_variant) | |
184 | goto error; | |
185 | if (def_variant->fields->pdata) { | |
186 | *list = (struct definition const* const*) def_variant->fields->pdata; | |
187 | *count = def_variant->fields->len; | |
188 | goto end; | |
189 | } else { | |
190 | goto error; | |
191 | } | |
192 | } | |
193 | case CTF_TYPE_ARRAY: | |
194 | { | |
195 | struct definition_array *def_array; | |
196 | ||
197 | def_array = container_of(scope, struct definition_array, p); | |
198 | if (!def_array) | |
199 | goto error; | |
200 | if (def_array->elems->pdata) { | |
201 | *list = (struct definition const* const*) def_array->elems->pdata; | |
202 | *count = def_array->elems->len; | |
203 | goto end; | |
204 | } else { | |
205 | goto error; | |
206 | } | |
207 | } | |
208 | case CTF_TYPE_SEQUENCE: | |
209 | { | |
210 | struct definition_sequence *def_sequence; | |
211 | ||
212 | def_sequence = container_of(scope, struct definition_sequence, p); | |
213 | if (!def_sequence) | |
214 | goto error; | |
215 | if (def_sequence->elems->pdata) { | |
216 | *list = (struct definition const* const*) def_sequence->elems->pdata; | |
217 | *count = def_sequence->elems->len; | |
218 | goto end; | |
219 | } else { | |
220 | goto error; | |
221 | } | |
222 | } | |
223 | default: | |
224 | break; | |
225 | } | |
226 | ||
227 | end: | |
228 | return 0; | |
229 | ||
230 | error: | |
231 | *list = NULL; | |
232 | *count = 0; | |
233 | return -1; | |
234 | } | |
235 | ||
236 | uint64_t bt_ctf_get_timestamp(struct bt_ctf_event *event) | |
237 | { | |
238 | if (event && event->stream->has_timestamp) | |
239 | return event->stream->timestamp; | |
240 | else | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static void bt_ctf_field_set_error(int error) | |
245 | { | |
246 | bt_ctf_last_field_error = error; | |
247 | } | |
248 | ||
249 | int bt_ctf_field_get_error(void) | |
250 | { | |
251 | int ret; | |
252 | ret = bt_ctf_last_field_error; | |
253 | bt_ctf_last_field_error = 0; | |
254 | ||
255 | return ret; | |
256 | } | |
257 | ||
258 | uint64_t bt_ctf_get_uint64(struct definition *field) | |
259 | { | |
260 | unsigned int ret = 0; | |
261 | ||
262 | if (field && bt_ctf_field_type(field) == CTF_TYPE_INTEGER) | |
263 | ret = get_unsigned_int(field); | |
264 | else | |
265 | bt_ctf_field_set_error(-EINVAL); | |
266 | ||
267 | return ret; | |
268 | } | |
269 | ||
aacd0c69 | 270 | int64_t bt_ctf_get_int64(struct definition *field) |
9843982d JD |
271 | { |
272 | int ret = 0; | |
273 | ||
274 | if (field && bt_ctf_field_type(field) == CTF_TYPE_INTEGER) | |
275 | ret = get_signed_int(field); | |
276 | else | |
277 | bt_ctf_field_set_error(-EINVAL); | |
278 | ||
279 | return ret; | |
280 | ||
281 | } | |
282 | ||
283 | char *bt_ctf_get_char_array(struct definition *field) | |
284 | { | |
285 | char *ret = NULL; | |
286 | ||
287 | if (field && bt_ctf_field_type(field) == CTF_TYPE_ARRAY) | |
288 | ret = get_char_array(field)->str; | |
289 | else | |
290 | bt_ctf_field_set_error(-EINVAL); | |
291 | ||
292 | return ret; | |
293 | } | |
294 | ||
295 | char *bt_ctf_get_string(struct definition *field) | |
296 | { | |
297 | char *ret = NULL; | |
298 | ||
299 | if (field && bt_ctf_field_type(field) == CTF_TYPE_STRING) | |
300 | ret = get_string(field); | |
301 | else | |
302 | bt_ctf_field_set_error(-EINVAL); | |
303 | ||
304 | return ret; | |
305 | } |