Commit | Line | Data |
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f79cf0f0 PP |
1 | /* |
2 | * packet.c | |
3 | * | |
4 | * Babeltrace CTF IR - Stream packet | |
5 | * | |
6 | * Copyright 2016 Philippe Proulx <pproulx@efficios.com> | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice shall be included in | |
16 | * all copies or substantial portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
24 | * SOFTWARE. | |
25 | */ | |
26 | ||
8ea705f0 | 27 | #define BT_LOG_TAG "PACKET" |
be514b0c | 28 | #include <babeltrace/lib-logging-internal.h> |
8ea705f0 | 29 | |
3dca2276 | 30 | #include <babeltrace/assert-pre-internal.h> |
f79cf0f0 PP |
31 | #include <babeltrace/ctf-ir/fields-internal.h> |
32 | #include <babeltrace/ctf-ir/packet.h> | |
33 | #include <babeltrace/ctf-ir/packet-internal.h> | |
312c056a | 34 | #include <babeltrace/ctf-ir/field-wrapper-internal.h> |
f79cf0f0 PP |
35 | #include <babeltrace/ctf-ir/trace.h> |
36 | #include <babeltrace/ctf-ir/stream-class-internal.h> | |
37 | #include <babeltrace/ctf-ir/stream-class.h> | |
38 | #include <babeltrace/ctf-ir/stream.h> | |
39 | #include <babeltrace/ctf-ir/stream-internal.h> | |
40 | #include <babeltrace/ctf-ir/trace-internal.h> | |
41 | #include <babeltrace/object-internal.h> | |
42 | #include <babeltrace/ref.h> | |
f6ccaed9 | 43 | #include <babeltrace/assert-internal.h> |
be514b0c | 44 | #include <inttypes.h> |
f79cf0f0 | 45 | |
094ff7c0 | 46 | struct bt_stream *bt_packet_borrow_stream(struct bt_packet *packet) |
f79cf0f0 | 47 | { |
f6ccaed9 | 48 | BT_ASSERT_PRE_NON_NULL(packet, "Packet"); |
094ff7c0 | 49 | return packet->stream; |
f79cf0f0 PP |
50 | } |
51 | ||
312c056a | 52 | struct bt_field *bt_packet_borrow_header(struct bt_packet *packet) |
f79cf0f0 | 53 | { |
f6ccaed9 | 54 | BT_ASSERT_PRE_NON_NULL(packet, "Packet"); |
312c056a | 55 | return packet->header ? (void *) packet->header->field : NULL; |
f79cf0f0 PP |
56 | } |
57 | ||
312c056a | 58 | struct bt_field *bt_packet_borrow_context(struct bt_packet *packet) |
f79cf0f0 | 59 | { |
312c056a PP |
60 | BT_ASSERT_PRE_NON_NULL(packet, "Packet"); |
61 | return packet->context ? (void *) packet->context->field : NULL; | |
62 | } | |
c5c82c6e | 63 | |
312c056a | 64 | BT_HIDDEN |
6c677fb5 | 65 | void _bt_packet_set_is_frozen(struct bt_packet *packet, bool is_frozen) |
312c056a | 66 | { |
59e3c4db | 67 | if (!packet) { |
312c056a | 68 | return; |
c5c82c6e PP |
69 | } |
70 | ||
312c056a PP |
71 | BT_LOGD("Freezing packet: addr=%p", packet); |
72 | ||
73 | if (packet->header) { | |
74 | BT_LOGD_STR("Freezing packet's header field."); | |
6c677fb5 PP |
75 | bt_field_set_is_frozen_recursive((void *) packet->header->field, |
76 | is_frozen); | |
f79cf0f0 PP |
77 | } |
78 | ||
312c056a PP |
79 | if (packet->context) { |
80 | BT_LOGD_STR("Freezing packet's context field."); | |
6c677fb5 PP |
81 | bt_field_set_is_frozen_recursive((void *) packet->context->field, |
82 | is_frozen); | |
312c056a PP |
83 | } |
84 | ||
6c677fb5 | 85 | packet->frozen = is_frozen; |
f6ccaed9 PP |
86 | } |
87 | ||
312c056a PP |
88 | static inline |
89 | void bt_packet_reset(struct bt_packet *packet) | |
f6ccaed9 | 90 | { |
312c056a | 91 | BT_ASSERT(packet); |
6c677fb5 | 92 | bt_packet_set_is_frozen(packet, false); |
312c056a PP |
93 | |
94 | if (packet->header) { | |
95 | bt_field_set_is_frozen_recursive( | |
96 | (void *) packet->header->field, false); | |
97 | bt_field_reset_recursive((void *) packet->header->field); | |
98 | } | |
99 | ||
100 | if (packet->context) { | |
101 | bt_field_set_is_frozen_recursive( | |
102 | (void *) packet->context->field, false); | |
103 | bt_field_reset_recursive((void *) packet->context->field); | |
104 | } | |
e22b45d0 PP |
105 | |
106 | bt_clock_value_set_reset(&packet->begin_cv_set); | |
107 | bt_clock_value_set_reset(&packet->end_cv_set); | |
f79cf0f0 PP |
108 | } |
109 | ||
312c056a PP |
110 | static |
111 | void bt_packet_header_field_recycle(struct bt_field_wrapper *header_field, | |
112 | struct bt_trace *trace) | |
f79cf0f0 | 113 | { |
312c056a PP |
114 | BT_ASSERT(header_field); |
115 | BT_LIB_LOGD("Recycling packet header field: " | |
116 | "addr=%p, %![trace-]+t, %![field-]+f", header_field, | |
117 | trace, header_field->field); | |
118 | bt_object_pool_recycle_object(&trace->packet_header_field_pool, | |
119 | header_field); | |
f79cf0f0 PP |
120 | } |
121 | ||
312c056a PP |
122 | static |
123 | void bt_packet_context_field_recycle(struct bt_field_wrapper *context_field, | |
124 | struct bt_stream_class *stream_class) | |
f79cf0f0 | 125 | { |
312c056a PP |
126 | BT_ASSERT(context_field); |
127 | BT_LIB_LOGD("Recycling packet context field: " | |
128 | "addr=%p, %![sc-]+S, %![field-]+f", context_field, | |
129 | stream_class, context_field->field); | |
130 | bt_object_pool_recycle_object(&stream_class->packet_context_field_pool, | |
131 | context_field); | |
f79cf0f0 PP |
132 | } |
133 | ||
134 | BT_HIDDEN | |
312c056a | 135 | void bt_packet_recycle(struct bt_packet *packet) |
f79cf0f0 | 136 | { |
312c056a | 137 | struct bt_stream *stream; |
f79cf0f0 | 138 | |
312c056a PP |
139 | BT_ASSERT(packet); |
140 | BT_LIB_LOGD("Recycling packet: %!+a", packet); | |
141 | ||
142 | /* | |
143 | * Those are the important ordered steps: | |
144 | * | |
145 | * 1. Reset the packet object (put any permanent reference it | |
146 | * has, unfreeze it and its fields in developer mode, etc.), | |
147 | * but do NOT put its stream's reference. This stream | |
148 | * contains the pool to which we're about to recycle this | |
149 | * packet object, so we must guarantee its existence thanks | |
150 | * to this existing reference. | |
151 | * | |
152 | * 2. Move the stream reference to our `stream` | |
153 | * variable so that we can set the packet's stream member | |
154 | * to NULL before recycling it. We CANNOT do this after | |
155 | * we put the stream reference because this bt_put() | |
156 | * could destroy the stream, also destroying its | |
157 | * packet pool, thus also destroying our packet object (this | |
158 | * would result in an invalid write access). | |
159 | * | |
160 | * 3. Recycle the packet object. | |
161 | * | |
162 | * 4. Put our stream reference. | |
163 | */ | |
164 | bt_packet_reset(packet); | |
165 | stream = packet->stream; | |
166 | BT_ASSERT(stream); | |
167 | packet->stream = NULL; | |
168 | bt_object_pool_recycle_object(&stream->packet_pool, packet); | |
6c677fb5 | 169 | bt_object_put_no_null_check(&stream->common.base); |
f79cf0f0 PP |
170 | } |
171 | ||
312c056a PP |
172 | BT_HIDDEN |
173 | void bt_packet_destroy(struct bt_packet *packet) | |
f79cf0f0 | 174 | { |
8ea705f0 | 175 | BT_LOGD("Destroying packet: addr=%p", packet); |
312c056a PP |
176 | BT_LOGD_STR("Destroying packet's header field."); |
177 | ||
178 | if (packet->header) { | |
179 | if (packet->stream) { | |
180 | BT_LOGD_STR("Recycling packet's header field."); | |
181 | bt_packet_header_field_recycle(packet->header, | |
182 | bt_stream_class_borrow_trace( | |
183 | bt_stream_borrow_class(packet->stream))); | |
184 | } else { | |
185 | bt_field_wrapper_destroy(packet->header); | |
186 | } | |
187 | } | |
188 | ||
189 | if (packet->context) { | |
190 | if (packet->stream) { | |
191 | BT_LOGD_STR("Recycling packet's context field."); | |
192 | bt_packet_context_field_recycle(packet->context, | |
193 | bt_stream_borrow_class(packet->stream)); | |
194 | } else { | |
195 | bt_field_wrapper_destroy(packet->context); | |
196 | } | |
197 | } | |
198 | ||
e22b45d0 PP |
199 | bt_clock_value_set_finalize(&packet->begin_cv_set); |
200 | bt_clock_value_set_finalize(&packet->end_cv_set); | |
d409daba | 201 | BT_LOGD_STR("Putting packet's stream."); |
f79cf0f0 PP |
202 | bt_put(packet->stream); |
203 | g_free(packet); | |
204 | } | |
205 | ||
312c056a PP |
206 | BT_HIDDEN |
207 | struct bt_packet *bt_packet_new(struct bt_stream *stream) | |
f79cf0f0 | 208 | { |
50842bdc PP |
209 | struct bt_packet *packet = NULL; |
210 | struct bt_stream_class *stream_class = NULL; | |
211 | struct bt_trace *trace = NULL; | |
f79cf0f0 | 212 | |
312c056a | 213 | BT_ASSERT(stream); |
be514b0c PP |
214 | BT_LOGD("Creating packet object: stream-addr=%p, " |
215 | "stream-name=\"%s\", stream-class-addr=%p, " | |
216 | "stream-class-name=\"%s\", stream-class-id=%" PRId64, | |
50842bdc | 217 | stream, bt_stream_get_name(stream), |
3dca2276 PP |
218 | stream->common.stream_class, |
219 | bt_stream_class_common_get_name(stream->common.stream_class), | |
220 | bt_stream_class_common_get_id(stream->common.stream_class)); | |
094ff7c0 | 221 | stream_class = bt_stream_borrow_class(stream); |
f6ccaed9 | 222 | BT_ASSERT(stream_class); |
094ff7c0 | 223 | trace = bt_stream_class_borrow_trace(stream_class); |
f6ccaed9 | 224 | BT_ASSERT(trace); |
50842bdc | 225 | packet = g_new0(struct bt_packet, 1); |
f79cf0f0 | 226 | if (!packet) { |
8ea705f0 | 227 | BT_LOGE_STR("Failed to allocate one packet object."); |
f79cf0f0 PP |
228 | goto end; |
229 | } | |
230 | ||
3fea54f6 PP |
231 | bt_object_init_shared(&packet->base, |
232 | (bt_object_release_func) bt_packet_recycle); | |
f79cf0f0 | 233 | packet->stream = bt_get(stream); |
be514b0c | 234 | |
3dca2276 | 235 | if (trace->common.packet_header_field_type) { |
be514b0c | 236 | BT_LOGD("Creating initial packet header field: ft-addr=%p", |
3dca2276 | 237 | trace->common.packet_header_field_type); |
312c056a PP |
238 | packet->header = bt_field_wrapper_create( |
239 | &trace->packet_header_field_pool, | |
240 | (void *) trace->common.packet_header_field_type); | |
be514b0c | 241 | if (!packet->header) { |
312c056a | 242 | BT_LOGE("Cannot create packet header field wrapper."); |
be514b0c PP |
243 | BT_PUT(packet); |
244 | goto end; | |
245 | } | |
f79cf0f0 PP |
246 | } |
247 | ||
3dca2276 | 248 | if (stream->common.stream_class->packet_context_field_type) { |
be514b0c | 249 | BT_LOGD("Creating initial packet context field: ft-addr=%p", |
3dca2276 | 250 | stream->common.stream_class->packet_context_field_type); |
312c056a PP |
251 | packet->context = bt_field_wrapper_create( |
252 | &stream_class->packet_context_field_pool, | |
253 | (void *) stream->common.stream_class->packet_context_field_type); | |
be514b0c | 254 | if (!packet->context) { |
312c056a | 255 | BT_LOGE("Cannot create packet context field wrapper."); |
be514b0c PP |
256 | BT_PUT(packet); |
257 | goto end; | |
258 | } | |
f79cf0f0 PP |
259 | } |
260 | ||
e22b45d0 PP |
261 | if (bt_clock_value_set_initialize(&packet->begin_cv_set)) { |
262 | BT_PUT(packet); | |
263 | goto end; | |
264 | } | |
265 | ||
266 | if (bt_clock_value_set_initialize(&packet->end_cv_set)) { | |
267 | BT_PUT(packet); | |
268 | goto end; | |
269 | } | |
270 | ||
8ea705f0 PP |
271 | BT_LOGD("Created packet object: addr=%p", packet); |
272 | ||
f79cf0f0 | 273 | end: |
f79cf0f0 PP |
274 | return packet; |
275 | } | |
312c056a PP |
276 | |
277 | struct bt_packet *bt_packet_create(struct bt_stream *stream) | |
278 | { | |
279 | struct bt_packet *packet = NULL; | |
280 | ||
281 | BT_ASSERT_PRE_NON_NULL(stream, "Stream"); | |
282 | packet = bt_object_pool_create_object(&stream->packet_pool); | |
6c677fb5 | 283 | if (unlikely(!packet)) { |
312c056a PP |
284 | BT_LIB_LOGE("Cannot allocate one packet from stream's packet pool: " |
285 | "%![stream-]+s", stream); | |
6c677fb5 | 286 | goto end; |
312c056a PP |
287 | } |
288 | ||
6c677fb5 PP |
289 | if (unlikely(!packet->stream)) { |
290 | packet->stream = stream; | |
291 | bt_object_get_no_null_check_no_parent_check( | |
292 | &packet->stream->common.base); | |
312c056a PP |
293 | } |
294 | ||
295 | goto end; | |
296 | ||
312c056a PP |
297 | end: |
298 | return packet; | |
299 | } | |
300 | ||
301 | int bt_packet_move_header(struct bt_packet *packet, | |
302 | struct bt_packet_header_field *header_field) | |
303 | { | |
304 | struct bt_trace *trace; | |
305 | struct bt_field_wrapper *field_wrapper = (void *) header_field; | |
306 | ||
307 | BT_ASSERT_PRE_NON_NULL(packet, "Event"); | |
308 | BT_ASSERT_PRE_NON_NULL(field_wrapper, "Header field"); | |
e22b45d0 | 309 | BT_ASSERT_PRE_HOT(packet, "Packet", ": %!+a", packet); |
312c056a PP |
310 | trace = bt_stream_class_borrow_trace( |
311 | bt_stream_borrow_class(packet->stream)); | |
312 | BT_ASSERT_PRE(trace->common.packet_header_field_type, | |
313 | "Trace has no packet header field type: %!+t", | |
314 | trace); | |
315 | ||
316 | /* TODO: compare field types (precondition) */ | |
317 | ||
318 | /* Recycle current header field: always exists */ | |
319 | BT_ASSERT(packet->header); | |
320 | bt_packet_header_field_recycle(packet->header, trace); | |
321 | ||
322 | /* Move new field */ | |
323 | packet->header = field_wrapper; | |
324 | return 0; | |
325 | } | |
326 | ||
327 | int bt_packet_move_context(struct bt_packet *packet, | |
328 | struct bt_packet_context_field *context_field) | |
329 | { | |
330 | struct bt_stream_class *stream_class; | |
331 | struct bt_field_wrapper *field_wrapper = (void *) context_field; | |
332 | ||
333 | BT_ASSERT_PRE_NON_NULL(packet, "Event"); | |
334 | BT_ASSERT_PRE_NON_NULL(field_wrapper, "Context field"); | |
e22b45d0 | 335 | BT_ASSERT_PRE_HOT(packet, "Packet", ": %!+a", packet); |
312c056a PP |
336 | stream_class = bt_stream_borrow_class(packet->stream); |
337 | BT_ASSERT_PRE(stream_class->common.packet_context_field_type, | |
338 | "Stream class has no packet context field type: %!+S", | |
339 | stream_class); | |
340 | ||
341 | /* TODO: compare field types (precondition) */ | |
342 | ||
343 | /* Recycle current context field: always exists */ | |
344 | BT_ASSERT(packet->context); | |
345 | bt_packet_context_field_recycle(packet->context, stream_class); | |
346 | ||
347 | /* Move new field */ | |
348 | packet->context = field_wrapper; | |
349 | return 0; | |
350 | } | |
e22b45d0 PP |
351 | |
352 | int bt_packet_set_beginning_clock_value(struct bt_packet *packet, | |
353 | struct bt_clock_class *clock_class, uint64_t raw_value, | |
354 | bt_bool is_default) | |
355 | { | |
356 | BT_ASSERT_PRE_NON_NULL(packet, "Packet"); | |
357 | BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class"); | |
358 | BT_ASSERT_PRE_HOT(packet, "Packet", ": %!+a", packet); | |
359 | BT_ASSERT_PRE(is_default, | |
360 | "You can only set a default clock value as of this version."); | |
361 | return bt_clock_value_set_set_clock_value(&packet->begin_cv_set, | |
362 | clock_class, raw_value, is_default); | |
363 | } | |
364 | ||
365 | struct bt_clock_value *bt_packet_borrow_default_begin_clock_value( | |
366 | struct bt_packet *packet) | |
367 | { | |
368 | struct bt_clock_value *clock_value = NULL; | |
369 | ||
370 | BT_ASSERT_PRE_NON_NULL(packet, "Packet"); | |
371 | clock_value = packet->begin_cv_set.default_cv; | |
372 | if (!clock_value) { | |
373 | BT_LIB_LOGV("No default clock value: %![packet-]+a", packet); | |
374 | } | |
375 | ||
376 | return clock_value; | |
377 | } | |
378 | ||
379 | int bt_packet_set_end_clock_value(struct bt_packet *packet, | |
380 | struct bt_clock_class *clock_class, uint64_t raw_value, | |
381 | bt_bool is_default) | |
382 | { | |
383 | BT_ASSERT_PRE_NON_NULL(packet, "Packet"); | |
384 | BT_ASSERT_PRE_NON_NULL(clock_class, "Clock class"); | |
385 | BT_ASSERT_PRE_HOT(packet, "Packet", ": %!+a", packet); | |
386 | BT_ASSERT_PRE(is_default, | |
387 | "You can only set a default clock value as of this version."); | |
388 | return bt_clock_value_set_set_clock_value(&packet->end_cv_set, | |
389 | clock_class, raw_value, is_default); | |
390 | } | |
391 | ||
392 | struct bt_clock_value *bt_packet_borrow_default_end_clock_value( | |
393 | struct bt_packet *packet) | |
394 | { | |
395 | struct bt_clock_value *clock_value = NULL; | |
396 | ||
397 | BT_ASSERT_PRE_NON_NULL(packet, "Packet"); | |
398 | clock_value = packet->end_cv_set.default_cv; | |
399 | if (!clock_value) { | |
400 | BT_LIB_LOGV("No default clock value: %![packet-]+a", packet); | |
401 | } | |
402 | ||
403 | return clock_value; | |
404 | } |