Commit | Line | Data |
---|---|---|
9843982d | 1 | /* |
5c5facc7 | 2 | * ctf/events.c |
9843982d JD |
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> | |
e4195791 MD |
26 | #include <babeltrace/prio_heap.h> |
27 | #include <babeltrace/iterator-internal.h> | |
28 | #include <babeltrace/ctf/events-internal.h> | |
29 | #include <babeltrace/ctf/metadata.h> | |
9843982d JD |
30 | #include <glib.h> |
31 | ||
32 | /* | |
33 | * thread local storage to store the last error that occured | |
34 | * while reading a field, this variable must be accessed by | |
35 | * bt_ctf_field_error only | |
36 | */ | |
37 | __thread int bt_ctf_last_field_error = 0; | |
38 | ||
e4195791 MD |
39 | struct bt_ctf_iter *bt_ctf_iter_create(struct bt_context *ctx, |
40 | struct bt_iter_pos *begin_pos, | |
41 | struct bt_iter_pos *end_pos) | |
42 | { | |
43 | struct bt_ctf_iter *iter; | |
44 | int ret; | |
45 | ||
46 | iter = g_new0(struct bt_ctf_iter, 1); | |
47 | ret = bt_iter_init(&iter->parent, ctx, begin_pos, end_pos); | |
48 | if (ret) { | |
49 | g_free(iter); | |
50 | return NULL; | |
51 | } | |
52 | return iter; | |
53 | } | |
54 | ||
55 | void bt_ctf_iter_destroy(struct bt_ctf_iter *iter) | |
56 | { | |
57 | bt_iter_fini(&iter->parent); | |
58 | g_free(iter); | |
59 | } | |
60 | ||
61 | struct bt_iter *bt_ctf_get_iter(struct bt_ctf_iter *iter) | |
62 | { | |
63 | return &iter->parent; | |
64 | } | |
65 | ||
66 | struct bt_ctf_event *bt_ctf_iter_read_event(struct bt_ctf_iter *iter) | |
67 | { | |
68 | struct ctf_file_stream *file_stream; | |
69 | struct bt_ctf_event *ret = &iter->current_ctf_event; | |
70 | ||
71 | file_stream = heap_maximum(iter->parent.stream_heap); | |
72 | if (!file_stream) { | |
73 | /* end of file for all streams */ | |
74 | goto stop; | |
75 | } | |
76 | ret->stream = &file_stream->parent; | |
77 | ret->event = g_ptr_array_index(ret->stream->events_by_id, | |
78 | ret->stream->event_id); | |
79 | ||
80 | if (ret->stream->stream_id > iter->parent.callbacks->len) | |
81 | goto end; | |
82 | ||
83 | process_callbacks(&iter->parent, ret->stream); | |
84 | ||
85 | end: | |
86 | return ret; | |
87 | stop: | |
88 | return NULL; | |
89 | } | |
90 | ||
9843982d JD |
91 | struct definition *bt_ctf_get_top_level_scope(struct bt_ctf_event *event, |
92 | enum bt_ctf_scope scope) | |
93 | { | |
94 | struct definition *tmp = NULL; | |
95 | ||
96 | switch (scope) { | |
97 | case BT_TRACE_PACKET_HEADER: | |
98 | if (!event->stream) | |
99 | goto error; | |
100 | if (event->stream->trace_packet_header) | |
101 | tmp = &event->stream->trace_packet_header->p; | |
102 | break; | |
103 | case BT_STREAM_PACKET_CONTEXT: | |
104 | if (!event->stream) | |
105 | goto error; | |
106 | if (event->stream->stream_packet_context) | |
107 | tmp = &event->stream->stream_packet_context->p; | |
108 | break; | |
109 | case BT_STREAM_EVENT_HEADER: | |
110 | if (!event->stream) | |
111 | goto error; | |
112 | if (event->stream->stream_event_header) | |
113 | tmp = &event->stream->stream_event_header->p; | |
114 | break; | |
115 | case BT_STREAM_EVENT_CONTEXT: | |
116 | if (!event->stream) | |
117 | goto error; | |
118 | if (event->stream->stream_event_context) | |
119 | tmp = &event->stream->stream_event_context->p; | |
120 | break; | |
121 | case BT_EVENT_CONTEXT: | |
122 | if (!event->event) | |
123 | goto error; | |
124 | if (event->event->event_context) | |
125 | tmp = &event->event->event_context->p; | |
126 | break; | |
127 | case BT_EVENT_FIELDS: | |
128 | if (!event->event) | |
129 | goto error; | |
130 | if (event->event->event_fields) | |
131 | tmp = &event->event->event_fields->p; | |
132 | break; | |
133 | } | |
134 | return tmp; | |
135 | ||
136 | error: | |
137 | return NULL; | |
138 | } | |
139 | ||
140 | struct definition *bt_ctf_get_field(struct bt_ctf_event *event, | |
141 | struct definition *scope, | |
142 | const char *field) | |
143 | { | |
144 | struct definition *def; | |
145 | ||
146 | if (scope) { | |
147 | def = lookup_definition(scope, field); | |
148 | if (bt_ctf_field_type(def) == CTF_TYPE_VARIANT) { | |
149 | struct definition_variant *variant_definition; | |
150 | variant_definition = container_of(def, | |
151 | struct definition_variant, p); | |
152 | return variant_definition->current_field; | |
153 | } | |
154 | return def; | |
155 | } | |
156 | return NULL; | |
157 | } | |
158 | ||
159 | struct definition *bt_ctf_get_index(struct bt_ctf_event *event, | |
160 | struct definition *field, | |
161 | unsigned int index) | |
162 | { | |
163 | struct definition *ret = NULL; | |
164 | ||
165 | if (bt_ctf_field_type(field) == CTF_TYPE_ARRAY) { | |
166 | struct definition_array *array_definition; | |
167 | array_definition = container_of(field, | |
168 | struct definition_array, p); | |
169 | ret = array_index(array_definition, index); | |
170 | } else if (bt_ctf_field_type(field) == CTF_TYPE_SEQUENCE) { | |
171 | struct definition_sequence *sequence_definition; | |
172 | sequence_definition = container_of(field, | |
173 | struct definition_sequence, p); | |
174 | ret = sequence_index(sequence_definition, index); | |
175 | } | |
176 | return ret; | |
177 | } | |
178 | ||
179 | const char *bt_ctf_event_name(struct bt_ctf_event *event) | |
180 | { | |
181 | struct ctf_event *event_class; | |
182 | struct ctf_stream_class *stream_class; | |
183 | ||
184 | if (!event) | |
185 | return NULL; | |
186 | stream_class = event->stream->stream_class; | |
187 | event_class = g_ptr_array_index(stream_class->events_by_id, | |
188 | event->stream->event_id); | |
189 | return g_quark_to_string(event_class->name); | |
190 | } | |
191 | ||
192 | const char *bt_ctf_field_name(const struct definition *def) | |
193 | { | |
194 | if (def) | |
195 | return g_quark_to_string(def->name); | |
196 | return NULL; | |
197 | } | |
198 | ||
199 | enum ctf_type_id bt_ctf_field_type(struct definition *def) | |
200 | { | |
201 | if (def) | |
202 | return def->declaration->id; | |
203 | return CTF_TYPE_UNKNOWN; | |
204 | } | |
205 | ||
206 | int bt_ctf_get_field_list(struct bt_ctf_event *event, | |
207 | struct definition *scope, | |
208 | struct definition const * const **list, | |
209 | unsigned int *count) | |
210 | { | |
211 | switch (bt_ctf_field_type(scope)) { | |
212 | case CTF_TYPE_INTEGER: | |
213 | case CTF_TYPE_FLOAT: | |
214 | case CTF_TYPE_STRING: | |
215 | case CTF_TYPE_ENUM: | |
216 | goto error; | |
217 | case CTF_TYPE_STRUCT: | |
218 | { | |
219 | struct definition_struct *def_struct; | |
220 | ||
221 | def_struct = container_of(scope, struct definition_struct, p); | |
222 | if (!def_struct) | |
223 | goto error; | |
224 | if (def_struct->fields->pdata) { | |
225 | *list = (struct definition const* const*) def_struct->fields->pdata; | |
226 | *count = def_struct->fields->len; | |
227 | goto end; | |
228 | } else { | |
229 | goto error; | |
230 | } | |
231 | } | |
232 | case CTF_TYPE_UNTAGGED_VARIANT: | |
233 | goto error; | |
234 | case CTF_TYPE_VARIANT: | |
235 | { | |
236 | struct definition_variant *def_variant; | |
237 | ||
238 | def_variant = container_of(scope, struct definition_variant, p); | |
239 | if (!def_variant) | |
240 | goto error; | |
241 | if (def_variant->fields->pdata) { | |
242 | *list = (struct definition const* const*) def_variant->fields->pdata; | |
243 | *count = def_variant->fields->len; | |
244 | goto end; | |
245 | } else { | |
246 | goto error; | |
247 | } | |
248 | } | |
249 | case CTF_TYPE_ARRAY: | |
250 | { | |
251 | struct definition_array *def_array; | |
252 | ||
253 | def_array = container_of(scope, struct definition_array, p); | |
254 | if (!def_array) | |
255 | goto error; | |
256 | if (def_array->elems->pdata) { | |
257 | *list = (struct definition const* const*) def_array->elems->pdata; | |
258 | *count = def_array->elems->len; | |
259 | goto end; | |
260 | } else { | |
261 | goto error; | |
262 | } | |
263 | } | |
264 | case CTF_TYPE_SEQUENCE: | |
265 | { | |
266 | struct definition_sequence *def_sequence; | |
267 | ||
268 | def_sequence = container_of(scope, struct definition_sequence, p); | |
269 | if (!def_sequence) | |
270 | goto error; | |
271 | if (def_sequence->elems->pdata) { | |
272 | *list = (struct definition const* const*) def_sequence->elems->pdata; | |
273 | *count = def_sequence->elems->len; | |
274 | goto end; | |
275 | } else { | |
276 | goto error; | |
277 | } | |
278 | } | |
279 | default: | |
280 | break; | |
281 | } | |
282 | ||
283 | end: | |
284 | return 0; | |
285 | ||
286 | error: | |
287 | *list = NULL; | |
288 | *count = 0; | |
289 | return -1; | |
290 | } | |
291 | ||
292 | uint64_t bt_ctf_get_timestamp(struct bt_ctf_event *event) | |
293 | { | |
294 | if (event && event->stream->has_timestamp) | |
295 | return event->stream->timestamp; | |
296 | else | |
297 | return 0; | |
298 | } | |
299 | ||
300 | static void bt_ctf_field_set_error(int error) | |
301 | { | |
302 | bt_ctf_last_field_error = error; | |
303 | } | |
304 | ||
305 | int bt_ctf_field_get_error(void) | |
306 | { | |
307 | int ret; | |
308 | ret = bt_ctf_last_field_error; | |
309 | bt_ctf_last_field_error = 0; | |
310 | ||
311 | return ret; | |
312 | } | |
313 | ||
314 | uint64_t bt_ctf_get_uint64(struct definition *field) | |
315 | { | |
316 | unsigned int ret = 0; | |
317 | ||
318 | if (field && bt_ctf_field_type(field) == CTF_TYPE_INTEGER) | |
319 | ret = get_unsigned_int(field); | |
320 | else | |
321 | bt_ctf_field_set_error(-EINVAL); | |
322 | ||
323 | return ret; | |
324 | } | |
325 | ||
aacd0c69 | 326 | int64_t bt_ctf_get_int64(struct definition *field) |
9843982d JD |
327 | { |
328 | int ret = 0; | |
329 | ||
330 | if (field && bt_ctf_field_type(field) == CTF_TYPE_INTEGER) | |
331 | ret = get_signed_int(field); | |
332 | else | |
333 | bt_ctf_field_set_error(-EINVAL); | |
334 | ||
335 | return ret; | |
336 | ||
337 | } | |
338 | ||
339 | char *bt_ctf_get_char_array(struct definition *field) | |
340 | { | |
341 | char *ret = NULL; | |
342 | ||
343 | if (field && bt_ctf_field_type(field) == CTF_TYPE_ARRAY) | |
344 | ret = get_char_array(field)->str; | |
345 | else | |
346 | bt_ctf_field_set_error(-EINVAL); | |
347 | ||
348 | return ret; | |
349 | } | |
350 | ||
351 | char *bt_ctf_get_string(struct definition *field) | |
352 | { | |
353 | char *ret = NULL; | |
354 | ||
355 | if (field && bt_ctf_field_type(field) == CTF_TYPE_STRING) | |
356 | ret = get_string(field); | |
357 | else | |
358 | bt_ctf_field_set_error(-EINVAL); | |
359 | ||
360 | return ret; | |
361 | } |