Commit | Line | Data |
---|---|---|
4a744367 JD |
1 | /* |
2 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> | |
3 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
24 | #include <sys/socket.h> | |
25 | #include <sys/types.h> | |
26 | #include <netinet/in.h> | |
27 | #include <netdb.h> | |
28 | #include <stdio.h> | |
29 | #include <string.h> | |
30 | #include <stdlib.h> | |
31 | #include <unistd.h> | |
32 | #include <errno.h> | |
33 | #include <inttypes.h> | |
34 | #include <fcntl.h> | |
35 | #include <sys/mman.h> | |
85e2085e | 36 | #include <poll.h> |
4a744367 JD |
37 | |
38 | #include <babeltrace/ctf/ctf-index.h> | |
39 | ||
40 | #include <babeltrace/babeltrace.h> | |
41 | #include <babeltrace/ctf/events.h> | |
42 | #include <babeltrace/ctf/callbacks.h> | |
43 | #include <babeltrace/ctf/iterator.h> | |
44 | ||
45 | /* for packet_index */ | |
46 | #include <babeltrace/ctf/types.h> | |
47 | ||
48 | #include <babeltrace/ctf/metadata.h> | |
49 | #include <babeltrace/ctf-text/types.h> | |
50 | #include <babeltrace/ctf/events-internal.h> | |
51 | #include <formats/ctf/events-private.h> | |
52 | ||
62f11f74 | 53 | #include <babeltrace/endian.h> |
af701dc4 JD |
54 | #include <babeltrace/compat/memstream.h> |
55 | ||
c98627ca | 56 | #include "lttng-live.h" |
158eea6e | 57 | #include "lttng-viewer-abi.h" |
4a744367 | 58 | |
85e2085e MD |
59 | #define ACTIVE_POLL_DELAY 100 /* ms */ |
60 | ||
4a744367 JD |
61 | /* |
62 | * Memory allocation zeroed | |
63 | */ | |
64 | #define zmalloc(x) calloc(1, x) | |
65 | ||
66 | #ifndef max_t | |
67 | #define max_t(type, a, b) \ | |
68 | ((type) (a) > (type) (b) ? (type) (a) : (type) (b)) | |
69 | #endif | |
70 | ||
b5a1fa45 JD |
71 | static void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, |
72 | size_t index, int whence); | |
2acdc547 JD |
73 | static void add_traces(gpointer key, gpointer value, gpointer user_data); |
74 | static int del_traces(gpointer key, gpointer value, gpointer user_data); | |
9abca178 | 75 | static int get_new_metadata(struct lttng_live_ctx *ctx, |
af701dc4 JD |
76 | struct lttng_live_viewer_stream *viewer_stream, |
77 | char **metadata_buf); | |
2acdc547 | 78 | |
b7e8a8e1 MD |
79 | static |
80 | ssize_t lttng_live_recv(int fd, void *buf, size_t len) | |
81 | { | |
82 | ssize_t ret; | |
83 | size_t copied = 0, to_copy = len; | |
84 | ||
85 | do { | |
86 | ret = recv(fd, buf + copied, to_copy, 0); | |
87 | if (ret > 0) { | |
88 | assert(ret <= to_copy); | |
89 | copied += ret; | |
90 | to_copy -= ret; | |
91 | } | |
92 | } while ((ret > 0 && to_copy > 0) | |
93 | || (ret < 0 && errno == EINTR)); | |
94 | if (ret > 0) | |
95 | ret = copied; | |
96 | /* ret = 0 means orderly shutdown, ret < 0 is error. */ | |
97 | return ret; | |
98 | } | |
99 | ||
100 | static | |
101 | ssize_t lttng_live_send(int fd, const void *buf, size_t len) | |
102 | { | |
103 | ssize_t ret; | |
104 | ||
105 | do { | |
106 | ret = send(fd, buf, len, MSG_NOSIGNAL); | |
107 | } while (ret < 0 && errno == EINTR); | |
108 | return ret; | |
109 | } | |
110 | ||
b5a1fa45 | 111 | int lttng_live_connect_viewer(struct lttng_live_ctx *ctx) |
4a744367 JD |
112 | { |
113 | struct hostent *host; | |
114 | struct sockaddr_in server_addr; | |
115 | int ret; | |
116 | ||
8ace20bf | 117 | if (lttng_live_should_quit()) { |
4a744367 JD |
118 | ret = -1; |
119 | goto end; | |
120 | } | |
121 | ||
8ace20bf MD |
122 | host = gethostbyname(ctx->relay_hostname); |
123 | if (!host) { | |
124 | fprintf(stderr, "[error] Cannot lookup hostname %s\n", | |
125 | ctx->relay_hostname); | |
126 | goto error; | |
127 | } | |
128 | ||
4a744367 JD |
129 | if ((ctx->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { |
130 | perror("Socket"); | |
8ace20bf | 131 | goto error; |
4a744367 JD |
132 | } |
133 | ||
134 | server_addr.sin_family = AF_INET; | |
b5a1fa45 | 135 | server_addr.sin_port = htons(ctx->port); |
4a744367 JD |
136 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); |
137 | bzero(&(server_addr.sin_zero), 8); | |
138 | ||
139 | if (connect(ctx->control_sock, (struct sockaddr *) &server_addr, | |
140 | sizeof(struct sockaddr)) == -1) { | |
141 | perror("Connect"); | |
8ace20bf | 142 | goto error; |
4a744367 JD |
143 | } |
144 | ||
145 | ret = 0; | |
146 | ||
147 | end: | |
148 | return ret; | |
8ace20bf MD |
149 | |
150 | error: | |
151 | fprintf(stderr, "[error] Connection failed\n"); | |
152 | return -1; | |
4a744367 JD |
153 | } |
154 | ||
155 | int lttng_live_establish_connection(struct lttng_live_ctx *ctx) | |
156 | { | |
157 | struct lttng_viewer_cmd cmd; | |
158 | struct lttng_viewer_connect connect; | |
159 | int ret; | |
160 | ssize_t ret_len; | |
161 | ||
8ace20bf MD |
162 | if (lttng_live_should_quit()) { |
163 | ret = -1; | |
164 | goto end; | |
165 | } | |
166 | ||
4a744367 JD |
167 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); |
168 | cmd.data_size = sizeof(connect); | |
169 | cmd.cmd_version = 0; | |
170 | ||
0c3cd7e1 | 171 | connect.viewer_session_id = -1ULL; /* will be set on recv */ |
4a744367 JD |
172 | connect.major = htobe32(LTTNG_LIVE_MAJOR); |
173 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
174 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
175 | ||
b7e8a8e1 | 176 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 177 | if (ret_len < 0) { |
79620497 | 178 | perror("[error] Error sending cmd"); |
4a744367 JD |
179 | goto error; |
180 | } | |
181 | assert(ret_len == sizeof(cmd)); | |
182 | ||
b7e8a8e1 | 183 | ret_len = lttng_live_send(ctx->control_sock, &connect, sizeof(connect)); |
4a744367 | 184 | if (ret_len < 0) { |
79620497 | 185 | perror("[error] Error sending version"); |
4a744367 JD |
186 | goto error; |
187 | } | |
188 | assert(ret_len == sizeof(connect)); | |
189 | ||
b7e8a8e1 | 190 | ret_len = lttng_live_recv(ctx->control_sock, &connect, sizeof(connect)); |
f8612f31 MD |
191 | if (ret_len == 0) { |
192 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
193 | goto error; |
194 | } | |
4a744367 | 195 | if (ret_len < 0) { |
79620497 | 196 | perror("[error] Error receiving version"); |
4a744367 JD |
197 | goto error; |
198 | } | |
199 | assert(ret_len == sizeof(connect)); | |
200 | ||
201 | printf_verbose("Received viewer session ID : %" PRIu64 "\n", | |
202 | be64toh(connect.viewer_session_id)); | |
203 | printf_verbose("Relayd version : %u.%u\n", be32toh(connect.major), | |
204 | be32toh(connect.minor)); | |
4a744367 | 205 | ret = 0; |
8ace20bf MD |
206 | end: |
207 | return ret; | |
4a744367 JD |
208 | |
209 | error: | |
8ace20bf MD |
210 | fprintf(stderr, "[error] Unable to establish connection\n"); |
211 | return -1; | |
4a744367 JD |
212 | } |
213 | ||
b5a1fa45 JD |
214 | static |
215 | void free_session_list(GPtrArray *session_list) | |
216 | { | |
217 | int i; | |
218 | struct lttng_live_relay_session *relay_session; | |
219 | ||
220 | for (i = 0; i < session_list->len; i++) { | |
221 | relay_session = g_ptr_array_index(session_list, i); | |
222 | free(relay_session->name); | |
223 | free(relay_session->hostname); | |
224 | } | |
225 | g_ptr_array_free(session_list, TRUE); | |
226 | } | |
227 | ||
228 | static | |
229 | void print_session_list(GPtrArray *session_list, const char *path) | |
230 | { | |
231 | int i; | |
232 | struct lttng_live_relay_session *relay_session; | |
233 | ||
234 | for (i = 0; i < session_list->len; i++) { | |
235 | relay_session = g_ptr_array_index(session_list, i); | |
236 | fprintf(stdout, "%s/host/%s/%s (timer = %u, " | |
237 | "%u stream(s), %u client(s) connected)\n", | |
238 | path, relay_session->hostname, | |
239 | relay_session->name, relay_session->timer, | |
240 | relay_session->streams, relay_session->clients); | |
241 | } | |
242 | } | |
243 | ||
244 | static | |
245 | void update_session_list(GPtrArray *session_list, char *hostname, | |
246 | char *session_name, uint32_t streams, uint32_t clients, | |
247 | uint32_t timer) | |
248 | { | |
249 | int i, found = 0; | |
250 | struct lttng_live_relay_session *relay_session; | |
251 | ||
252 | for (i = 0; i < session_list->len; i++) { | |
253 | relay_session = g_ptr_array_index(session_list, i); | |
254 | if ((strncmp(relay_session->hostname, hostname, NAME_MAX) == 0) && | |
255 | strncmp(relay_session->name, | |
256 | session_name, NAME_MAX) == 0) { | |
257 | relay_session->streams += streams; | |
258 | if (relay_session->clients < clients) | |
259 | relay_session->clients = clients; | |
260 | found = 1; | |
261 | break; | |
262 | } | |
263 | } | |
264 | if (found) | |
265 | return; | |
266 | ||
267 | relay_session = g_new0(struct lttng_live_relay_session, 1); | |
268 | relay_session->hostname = strndup(hostname, NAME_MAX); | |
269 | relay_session->name = strndup(session_name, NAME_MAX); | |
270 | relay_session->clients = clients; | |
271 | relay_session->streams = streams; | |
272 | relay_session->timer = timer; | |
273 | g_ptr_array_add(session_list, relay_session); | |
274 | } | |
275 | ||
4a744367 JD |
276 | int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path) |
277 | { | |
278 | struct lttng_viewer_cmd cmd; | |
279 | struct lttng_viewer_list_sessions list; | |
280 | struct lttng_viewer_session lsession; | |
b5a1fa45 | 281 | int i, ret, sessions_count, print_list = 0; |
4a744367 | 282 | ssize_t ret_len; |
b5a1fa45 JD |
283 | uint64_t session_id; |
284 | GPtrArray *session_list = NULL; | |
285 | ||
8ace20bf MD |
286 | if (lttng_live_should_quit()) { |
287 | ret = -1; | |
288 | goto end; | |
289 | } | |
290 | ||
b5a1fa45 JD |
291 | if (strlen(ctx->session_name) == 0) { |
292 | print_list = 1; | |
293 | session_list = g_ptr_array_new(); | |
294 | } | |
4a744367 JD |
295 | |
296 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
297 | cmd.data_size = 0; | |
298 | cmd.cmd_version = 0; | |
299 | ||
b7e8a8e1 | 300 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 301 | if (ret_len < 0) { |
79620497 | 302 | perror("[error] Error sending cmd"); |
4a744367 JD |
303 | goto error; |
304 | } | |
305 | assert(ret_len == sizeof(cmd)); | |
306 | ||
b7e8a8e1 | 307 | ret_len = lttng_live_recv(ctx->control_sock, &list, sizeof(list)); |
f8612f31 MD |
308 | if (ret_len == 0) { |
309 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
310 | goto error; |
311 | } | |
4a744367 | 312 | if (ret_len < 0) { |
79620497 | 313 | perror("[error] Error receiving session list"); |
4a744367 JD |
314 | goto error; |
315 | } | |
316 | assert(ret_len == sizeof(list)); | |
317 | ||
318 | sessions_count = be32toh(list.sessions_count); | |
4a744367 | 319 | for (i = 0; i < sessions_count; i++) { |
b7e8a8e1 | 320 | ret_len = lttng_live_recv(ctx->control_sock, &lsession, sizeof(lsession)); |
f8612f31 MD |
321 | if (ret_len == 0) { |
322 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
323 | goto error; |
324 | } | |
4a744367 | 325 | if (ret_len < 0) { |
79620497 | 326 | perror("[error] Error receiving session"); |
4a744367 JD |
327 | goto error; |
328 | } | |
329 | assert(ret_len == sizeof(lsession)); | |
9ed31e53 MD |
330 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
331 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
b5a1fa45 JD |
332 | session_id = be64toh(lsession.id); |
333 | ||
334 | if (print_list) { | |
335 | update_session_list(session_list, | |
336 | lsession.hostname, | |
337 | lsession.session_name, | |
338 | be32toh(lsession.streams), | |
339 | be32toh(lsession.clients), | |
340 | be32toh(lsession.live_timer)); | |
341 | } else { | |
342 | if ((strncmp(lsession.session_name, ctx->session_name, | |
343 | NAME_MAX) == 0) && (strncmp(lsession.hostname, | |
344 | ctx->traced_hostname, NAME_MAX) == 0)) { | |
345 | printf_verbose("Reading from session %" PRIu64 "\n", | |
346 | session_id); | |
347 | g_array_append_val(ctx->session_ids, | |
348 | session_id); | |
349 | } | |
350 | } | |
351 | } | |
4a744367 | 352 | |
b5a1fa45 JD |
353 | if (print_list) { |
354 | print_session_list(session_list, path); | |
355 | free_session_list(session_list); | |
4a744367 | 356 | } |
4a744367 | 357 | ret = 0; |
8ace20bf MD |
358 | end: |
359 | return ret; | |
4a744367 JD |
360 | |
361 | error: | |
8ace20bf MD |
362 | fprintf(stderr, "[error] Unable to list sessions\n"); |
363 | return -1; | |
4a744367 JD |
364 | } |
365 | ||
366 | int lttng_live_ctf_trace_assign(struct lttng_live_viewer_stream *stream, | |
367 | uint64_t ctf_trace_id) | |
368 | { | |
369 | struct lttng_live_ctf_trace *trace; | |
370 | int ret = 0; | |
371 | ||
372 | trace = g_hash_table_lookup(stream->session->ctf_traces, | |
373 | (gpointer) ctf_trace_id); | |
374 | if (!trace) { | |
375 | trace = g_new0(struct lttng_live_ctf_trace, 1); | |
4a744367 JD |
376 | trace->ctf_trace_id = ctf_trace_id; |
377 | trace->streams = g_ptr_array_new(); | |
378 | g_hash_table_insert(stream->session->ctf_traces, | |
379 | (gpointer) ctf_trace_id, | |
380 | trace); | |
381 | } | |
382 | if (stream->metadata_flag) | |
383 | trace->metadata_stream = stream; | |
384 | ||
385 | stream->ctf_trace = trace; | |
386 | g_ptr_array_add(trace->streams, stream); | |
387 | ||
4a744367 JD |
388 | return ret; |
389 | } | |
390 | ||
af701dc4 JD |
391 | static |
392 | int open_metadata_fp_write(struct lttng_live_viewer_stream *stream, | |
393 | char **metadata_buf, size_t *size) | |
394 | { | |
395 | int ret = 0; | |
396 | ||
397 | stream->metadata_fp_write = | |
398 | babeltrace_open_memstream(metadata_buf, size); | |
399 | if (!stream->metadata_fp_write) { | |
400 | perror("Metadata open_memstream"); | |
401 | ret = -1; | |
402 | } | |
403 | ||
404 | return ret; | |
405 | } | |
406 | ||
4a744367 JD |
407 | int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id) |
408 | { | |
409 | struct lttng_viewer_cmd cmd; | |
410 | struct lttng_viewer_attach_session_request rq; | |
411 | struct lttng_viewer_attach_session_response rp; | |
412 | struct lttng_viewer_stream stream; | |
413 | int ret, i; | |
414 | ssize_t ret_len; | |
415 | ||
8ace20bf MD |
416 | if (lttng_live_should_quit()) { |
417 | ret = -1; | |
418 | goto end; | |
419 | } | |
420 | ||
4a744367 JD |
421 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
422 | cmd.data_size = sizeof(rq); | |
423 | cmd.cmd_version = 0; | |
424 | ||
425 | memset(&rq, 0, sizeof(rq)); | |
426 | rq.session_id = htobe64(id); | |
427 | // TODO: add cmd line parameter to select seek beginning | |
428 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
429 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
430 | ||
b7e8a8e1 | 431 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 432 | if (ret_len < 0) { |
79620497 | 433 | perror("[error] Error sending cmd"); |
4a744367 JD |
434 | goto error; |
435 | } | |
436 | assert(ret_len == sizeof(cmd)); | |
437 | ||
b7e8a8e1 | 438 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 439 | if (ret_len < 0) { |
79620497 | 440 | perror("[error] Error sending attach request"); |
4a744367 JD |
441 | goto error; |
442 | } | |
443 | assert(ret_len == sizeof(rq)); | |
444 | ||
b7e8a8e1 | 445 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
446 | if (ret_len == 0) { |
447 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
448 | goto error; |
449 | } | |
4a744367 | 450 | if (ret_len < 0) { |
79620497 | 451 | perror("[error] Error receiving attach response"); |
4a744367 JD |
452 | goto error; |
453 | } | |
454 | assert(ret_len == sizeof(rp)); | |
455 | ||
456 | switch(be32toh(rp.status)) { | |
457 | case LTTNG_VIEWER_ATTACH_OK: | |
458 | break; | |
459 | case LTTNG_VIEWER_ATTACH_UNK: | |
460 | ret = -LTTNG_VIEWER_ATTACH_UNK; | |
461 | goto end; | |
462 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
79620497 | 463 | fprintf(stderr, "[error] There is already a viewer attached to this session\n"); |
8ace20bf | 464 | goto error; |
4a744367 JD |
465 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: |
466 | fprintf(stderr, "[error] Not a live session\n"); | |
8ace20bf | 467 | goto error; |
4a744367 JD |
468 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: |
469 | fprintf(stderr, "[error] Wrong seek parameter\n"); | |
8ace20bf | 470 | goto error; |
4a744367 JD |
471 | default: |
472 | fprintf(stderr, "[error] Unknown attach return code %u\n", | |
473 | be32toh(rp.status)); | |
8ace20bf | 474 | goto error; |
4a744367 JD |
475 | } |
476 | if (be32toh(rp.status) != LTTNG_VIEWER_ATTACH_OK) { | |
8ace20bf | 477 | goto error; |
4a744367 JD |
478 | } |
479 | ||
2acdc547 | 480 | ctx->session->stream_count += be32toh(rp.streams_count); |
4a744367 JD |
481 | /* |
482 | * When the session is created but not started, we do an active wait | |
483 | * until it starts. It allows the viewer to start processing the trace | |
484 | * as soon as the session starts. | |
485 | */ | |
486 | if (ctx->session->stream_count == 0) { | |
487 | ret = 0; | |
488 | goto end; | |
489 | } | |
490 | printf_verbose("Waiting for %" PRIu64 " streams:\n", | |
491 | ctx->session->stream_count); | |
492 | ctx->session->streams = g_new0(struct lttng_live_viewer_stream, | |
493 | ctx->session->stream_count); | |
4a744367 | 494 | for (i = 0; i < be32toh(rp.streams_count); i++) { |
b7e8a8e1 | 495 | ret_len = lttng_live_recv(ctx->control_sock, &stream, sizeof(stream)); |
f8612f31 MD |
496 | if (ret_len == 0) { |
497 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
498 | goto error; |
499 | } | |
4a744367 | 500 | if (ret_len < 0) { |
79620497 | 501 | perror("[error] Error receiving stream"); |
4a744367 JD |
502 | goto error; |
503 | } | |
504 | assert(ret_len == sizeof(stream)); | |
9ed31e53 MD |
505 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
506 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
4a744367 JD |
507 | |
508 | printf_verbose(" stream %" PRIu64 " : %s/%s\n", | |
509 | be64toh(stream.id), stream.path_name, | |
510 | stream.channel_name); | |
511 | ctx->session->streams[i].id = be64toh(stream.id); | |
512 | ctx->session->streams[i].session = ctx->session; | |
513 | ||
514 | ctx->session->streams[i].first_read = 1; | |
515 | ctx->session->streams[i].mmap_size = 0; | |
516 | ||
517 | if (be32toh(stream.metadata_flag)) { | |
4a744367 | 518 | ctx->session->streams[i].metadata_flag = 1; |
4a744367 JD |
519 | } |
520 | ret = lttng_live_ctf_trace_assign(&ctx->session->streams[i], | |
521 | be64toh(stream.ctf_trace_id)); | |
522 | if (ret < 0) { | |
523 | goto error; | |
524 | } | |
525 | ||
526 | } | |
527 | ret = 0; | |
4a744367 | 528 | end: |
4a744367 | 529 | return ret; |
8ace20bf MD |
530 | |
531 | error: | |
532 | return -1; | |
4a744367 JD |
533 | } |
534 | ||
2acdc547 JD |
535 | static |
536 | int ask_new_streams(struct lttng_live_ctx *ctx) | |
537 | { | |
538 | int i, ret = 0; | |
539 | uint64_t id; | |
540 | ||
541 | restart: | |
542 | for (i = 0; i < ctx->session_ids->len; i++) { | |
543 | id = g_array_index(ctx->session_ids, uint64_t, i); | |
544 | ret = lttng_live_get_new_streams(ctx, id); | |
545 | printf_verbose("Asking for new streams returns %d\n", | |
546 | ret); | |
547 | if (ret < 0) { | |
f28fb4b6 JG |
548 | if (lttng_live_should_quit()) { |
549 | goto end; | |
550 | } | |
2acdc547 JD |
551 | if (ret == -LTTNG_VIEWER_NEW_STREAMS_HUP) { |
552 | printf_verbose("Session %" PRIu64 " closed\n", | |
553 | id); | |
b5a1fa45 JD |
554 | /* |
555 | * The streams have already been closed during | |
556 | * the reading, so we only need to get rid of | |
557 | * the trace in our internal table of sessions. | |
558 | */ | |
2acdc547 JD |
559 | g_array_remove_index(ctx->session_ids, i); |
560 | /* | |
561 | * We can't continue iterating on the g_array | |
562 | * after a remove, we have to start again. | |
563 | */ | |
564 | goto restart; | |
565 | } else { | |
566 | ret = -1; | |
567 | goto end; | |
568 | } | |
569 | } | |
570 | } | |
571 | ||
572 | end: | |
573 | return ret; | |
574 | } | |
575 | ||
50d207af JD |
576 | static |
577 | int append_metadata(struct lttng_live_ctx *ctx, | |
578 | struct lttng_live_viewer_stream *viewer_stream) | |
579 | { | |
580 | int ret; | |
581 | struct lttng_live_viewer_stream *metadata; | |
582 | char *metadata_buf = NULL; | |
583 | ||
584 | printf_verbose("get_next_index: new metadata needed\n"); | |
585 | ret = get_new_metadata(ctx, viewer_stream, &metadata_buf); | |
586 | if (ret < 0) { | |
587 | free(metadata_buf); | |
588 | goto error; | |
589 | } | |
590 | ||
591 | metadata = viewer_stream->ctf_trace->metadata_stream; | |
592 | metadata->ctf_trace->metadata_fp = | |
593 | babeltrace_fmemopen(metadata_buf, | |
594 | metadata->metadata_len, "rb"); | |
595 | if (!metadata->ctf_trace->metadata_fp) { | |
596 | perror("Metadata fmemopen"); | |
597 | free(metadata_buf); | |
598 | ret = -1; | |
599 | goto error; | |
600 | } | |
601 | ret = ctf_append_trace_metadata( | |
602 | viewer_stream->ctf_trace->handle->td, | |
603 | metadata->ctf_trace->metadata_fp); | |
251fc08c MD |
604 | /* We accept empty metadata packets */ |
605 | if (ret != 0 && ret != -ENOENT) { | |
50d207af JD |
606 | fprintf(stderr, "[error] Appending metadata\n"); |
607 | goto error; | |
608 | } | |
251fc08c | 609 | ret = 0; |
50d207af JD |
610 | |
611 | error: | |
612 | return ret; | |
613 | } | |
614 | ||
4a744367 JD |
615 | static |
616 | int get_data_packet(struct lttng_live_ctx *ctx, | |
617 | struct ctf_stream_pos *pos, | |
618 | struct lttng_live_viewer_stream *stream, uint64_t offset, | |
619 | uint64_t len) | |
620 | { | |
621 | struct lttng_viewer_cmd cmd; | |
622 | struct lttng_viewer_get_packet rq; | |
623 | struct lttng_viewer_trace_packet rp; | |
624 | ssize_t ret_len; | |
625 | int ret; | |
626 | ||
50d207af | 627 | retry: |
8ace20bf MD |
628 | if (lttng_live_should_quit()) { |
629 | ret = -1; | |
630 | goto end; | |
631 | } | |
4a744367 JD |
632 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); |
633 | cmd.data_size = sizeof(rq); | |
634 | cmd.cmd_version = 0; | |
635 | ||
636 | memset(&rq, 0, sizeof(rq)); | |
637 | rq.stream_id = htobe64(stream->id); | |
c1e8ac81 | 638 | rq.offset = htobe64(offset); |
4a744367 JD |
639 | rq.len = htobe32(len); |
640 | ||
b7e8a8e1 | 641 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 642 | if (ret_len < 0) { |
79620497 | 643 | perror("[error] Error sending cmd"); |
4a744367 JD |
644 | goto error; |
645 | } | |
646 | assert(ret_len == sizeof(cmd)); | |
647 | ||
b7e8a8e1 | 648 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 649 | if (ret_len < 0) { |
79620497 | 650 | perror("[error] Error sending get_data_packet request"); |
4a744367 JD |
651 | goto error; |
652 | } | |
653 | assert(ret_len == sizeof(rq)); | |
654 | ||
b7e8a8e1 | 655 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
656 | if (ret_len == 0) { |
657 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
658 | goto error; |
659 | } | |
4a744367 | 660 | if (ret_len < 0) { |
79620497 | 661 | perror("[error] Error receiving data response"); |
4a744367 JD |
662 | goto error; |
663 | } | |
57b9d843 JD |
664 | if (ret_len != sizeof(rp)) { |
665 | fprintf(stderr, "[error] get_data_packet: expected %" PRId64 | |
a5e4b11e MD |
666 | ", received %" PRId64 "\n", sizeof(rp), |
667 | ret_len); | |
57b9d843 JD |
668 | goto error; |
669 | } | |
4a744367 JD |
670 | |
671 | rp.flags = be32toh(rp.flags); | |
672 | ||
673 | switch (be32toh(rp.status)) { | |
674 | case LTTNG_VIEWER_GET_PACKET_OK: | |
675 | len = be32toh(rp.len); | |
676 | printf_verbose("get_data_packet: Ok, packet size : %" PRIu64 | |
677 | "\n", len); | |
678 | break; | |
679 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
8ace20bf | 680 | /* Unimplemented by relay daemon */ |
4a744367 | 681 | printf_verbose("get_data_packet: retry\n"); |
8ace20bf | 682 | goto error; |
4a744367 JD |
683 | case LTTNG_VIEWER_GET_PACKET_ERR: |
684 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
685 | printf_verbose("get_data_packet: new metadata needed\n"); | |
50d207af JD |
686 | ret = append_metadata(ctx, stream); |
687 | if (ret) | |
688 | goto error; | |
4a744367 | 689 | } |
2acdc547 | 690 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { |
f312b3aa | 691 | printf_verbose("get_data_packet: new streams needed\n"); |
2acdc547 JD |
692 | ret = ask_new_streams(ctx); |
693 | if (ret < 0) | |
694 | goto error; | |
4d4bf6eb MD |
695 | g_hash_table_foreach(ctx->session->ctf_traces, |
696 | add_traces, ctx->bt_ctx); | |
2acdc547 | 697 | } |
f312b3aa MD |
698 | if (rp.flags & (LTTNG_VIEWER_FLAG_NEW_METADATA |
699 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
700 | goto retry; | |
701 | } | |
4a744367 | 702 | fprintf(stderr, "[error] get_data_packet: error\n"); |
8ace20bf | 703 | goto error; |
4a744367 JD |
704 | case LTTNG_VIEWER_GET_PACKET_EOF: |
705 | ret = -2; | |
8ace20bf | 706 | goto end; |
4a744367 JD |
707 | default: |
708 | printf_verbose("get_data_packet: unknown\n"); | |
8ace20bf | 709 | goto error; |
4a744367 JD |
710 | } |
711 | ||
65ae9a82 | 712 | if (len == 0) { |
96943040 | 713 | goto error; |
4a744367 JD |
714 | } |
715 | ||
716 | if (len > stream->mmap_size) { | |
717 | uint64_t new_size; | |
718 | ||
719 | new_size = max_t(uint64_t, len, stream->mmap_size << 1); | |
720 | if (pos->base_mma) { | |
721 | /* unmap old base */ | |
722 | ret = munmap_align(pos->base_mma); | |
723 | if (ret) { | |
79620497 | 724 | perror("[error] Unable to unmap old base"); |
4a744367 JD |
725 | goto error; |
726 | } | |
727 | pos->base_mma = NULL; | |
728 | } | |
729 | pos->base_mma = mmap_align(new_size, | |
730 | PROT_READ | PROT_WRITE, | |
731 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
732 | if (pos->base_mma == MAP_FAILED) { | |
79620497 | 733 | perror("[error] mmap error"); |
4a744367 | 734 | pos->base_mma = NULL; |
4a744367 JD |
735 | goto error; |
736 | } | |
737 | ||
738 | stream->mmap_size = new_size; | |
739 | printf_verbose("Expanding stream mmap size to %" PRIu64 " bytes\n", | |
740 | stream->mmap_size); | |
741 | } | |
742 | ||
b7e8a8e1 MD |
743 | ret_len = lttng_live_recv(ctx->control_sock, |
744 | mmap_align_addr(pos->base_mma), len); | |
f8612f31 MD |
745 | if (ret_len == 0) { |
746 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
747 | goto error; |
748 | } | |
4a744367 | 749 | if (ret_len < 0) { |
79620497 | 750 | perror("[error] Error receiving trace packet"); |
4a744367 JD |
751 | goto error; |
752 | } | |
753 | assert(ret_len == len); | |
f312b3aa | 754 | ret = 0; |
4a744367 | 755 | end: |
4a744367 | 756 | return ret; |
8ace20bf MD |
757 | |
758 | error: | |
759 | return -1; | |
4a744367 JD |
760 | } |
761 | ||
4a744367 | 762 | static |
9abca178 JD |
763 | int get_one_metadata_packet(struct lttng_live_ctx *ctx, |
764 | struct lttng_live_viewer_stream *metadata_stream) | |
4a744367 JD |
765 | { |
766 | uint64_t len = 0; | |
767 | int ret; | |
768 | struct lttng_viewer_cmd cmd; | |
769 | struct lttng_viewer_get_metadata rq; | |
770 | struct lttng_viewer_metadata_packet rp; | |
4a744367 JD |
771 | char *data = NULL; |
772 | ssize_t ret_len; | |
773 | ||
8ace20bf MD |
774 | if (lttng_live_should_quit()) { |
775 | ret = -1; | |
776 | goto end; | |
777 | } | |
778 | ||
9abca178 | 779 | rq.stream_id = htobe64(metadata_stream->id); |
4a744367 JD |
780 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); |
781 | cmd.data_size = sizeof(rq); | |
782 | cmd.cmd_version = 0; | |
783 | ||
b7e8a8e1 | 784 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 785 | if (ret_len < 0) { |
79620497 | 786 | perror("[error] Error sending cmd"); |
4a744367 JD |
787 | goto error; |
788 | } | |
789 | assert(ret_len == sizeof(cmd)); | |
790 | ||
b7e8a8e1 | 791 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 792 | if (ret_len < 0) { |
79620497 | 793 | perror("[error] Error sending get_metadata request"); |
4a744367 JD |
794 | goto error; |
795 | } | |
796 | assert(ret_len == sizeof(rq)); | |
797 | ||
b7e8a8e1 | 798 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
799 | if (ret_len == 0) { |
800 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
801 | goto error; |
802 | } | |
4a744367 | 803 | if (ret_len < 0) { |
79620497 | 804 | perror("[error] Error receiving metadata response"); |
4a744367 JD |
805 | goto error; |
806 | } | |
807 | assert(ret_len == sizeof(rp)); | |
808 | ||
809 | switch (be32toh(rp.status)) { | |
810 | case LTTNG_VIEWER_METADATA_OK: | |
811 | printf_verbose("get_metadata : OK\n"); | |
812 | break; | |
813 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
814 | printf_verbose("get_metadata : NO NEW\n"); | |
9abca178 | 815 | ret = 0; |
4a744367 JD |
816 | goto end; |
817 | case LTTNG_VIEWER_METADATA_ERR: | |
818 | printf_verbose("get_metadata : ERR\n"); | |
8ace20bf | 819 | goto error; |
4a744367 JD |
820 | default: |
821 | printf_verbose("get_metadata : UNKNOWN\n"); | |
8ace20bf | 822 | goto error; |
4a744367 JD |
823 | } |
824 | ||
825 | len = be64toh(rp.len); | |
826 | printf_verbose("Writing %" PRIu64" bytes to metadata\n", len); | |
827 | if (len <= 0) { | |
8ace20bf | 828 | goto error; |
4a744367 JD |
829 | } |
830 | ||
831 | data = zmalloc(len); | |
832 | if (!data) { | |
833 | perror("relay data zmalloc"); | |
4a744367 JD |
834 | goto error; |
835 | } | |
b7e8a8e1 | 836 | ret_len = lttng_live_recv(ctx->control_sock, data, len); |
f8612f31 MD |
837 | if (ret_len == 0) { |
838 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
8ace20bf | 839 | goto error_free_data; |
f8612f31 | 840 | } |
4a744367 | 841 | if (ret_len < 0) { |
79620497 | 842 | perror("[error] Error receiving trace packet"); |
8ace20bf | 843 | goto error_free_data; |
4a744367 JD |
844 | } |
845 | assert(ret_len == len); | |
846 | ||
847 | do { | |
af701dc4 JD |
848 | ret_len = fwrite(data, 1, len, |
849 | metadata_stream->metadata_fp_write); | |
4a744367 JD |
850 | } while (ret_len < 0 && errno == EINTR); |
851 | if (ret_len < 0) { | |
af701dc4 | 852 | fprintf(stderr, "[error] Writing in the metadata fp\n"); |
8ace20bf | 853 | goto error_free_data; |
4a744367 JD |
854 | } |
855 | assert(ret_len == len); | |
af701dc4 | 856 | metadata_stream->metadata_len += len; |
8ace20bf | 857 | free(data); |
9abca178 | 858 | ret = len; |
8ace20bf MD |
859 | end: |
860 | return ret; | |
4a744367 | 861 | |
8ace20bf | 862 | error_free_data: |
4a744367 | 863 | free(data); |
4a744367 | 864 | error: |
8ace20bf | 865 | return -1; |
4a744367 JD |
866 | } |
867 | ||
9abca178 JD |
868 | /* |
869 | * Return 0 on success, a negative value on error. | |
870 | */ | |
871 | static | |
872 | int get_new_metadata(struct lttng_live_ctx *ctx, | |
af701dc4 JD |
873 | struct lttng_live_viewer_stream *viewer_stream, |
874 | char **metadata_buf) | |
9abca178 JD |
875 | { |
876 | int ret = 0; | |
877 | struct lttng_live_viewer_stream *metadata_stream; | |
c111d5d7 | 878 | size_t size, len_read = 0;; |
9abca178 JD |
879 | |
880 | metadata_stream = viewer_stream->ctf_trace->metadata_stream; | |
50d207af JD |
881 | if (!metadata_stream) { |
882 | fprintf(stderr, "[error] No metadata stream\n"); | |
883 | ret = -1; | |
884 | goto error; | |
885 | } | |
af701dc4 JD |
886 | metadata_stream->metadata_len = 0; |
887 | ret = open_metadata_fp_write(metadata_stream, metadata_buf, &size); | |
888 | if (ret < 0) { | |
889 | goto error; | |
890 | } | |
9abca178 JD |
891 | |
892 | do { | |
893 | /* | |
894 | * get_one_metadata_packet returns the number of bytes | |
895 | * received, 0 when we have received everything, a | |
896 | * negative value on error. | |
897 | */ | |
898 | ret = get_one_metadata_packet(ctx, metadata_stream); | |
c111d5d7 MD |
899 | if (ret > 0) { |
900 | len_read += ret; | |
901 | } | |
85e2085e MD |
902 | if (!len_read) { |
903 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); | |
904 | } | |
c111d5d7 | 905 | } while (ret > 0 || !len_read); |
9abca178 | 906 | |
7def295f MD |
907 | if (fclose(metadata_stream->metadata_fp_write)) |
908 | perror("fclose"); | |
af701dc4 JD |
909 | metadata_stream->metadata_fp_write = NULL; |
910 | ||
911 | error: | |
9abca178 JD |
912 | return ret; |
913 | } | |
914 | ||
4a744367 JD |
915 | /* |
916 | * Get one index for a stream. | |
917 | * | |
918 | * Returns 0 on success or a negative value on error. | |
919 | */ | |
920 | static | |
921 | int get_next_index(struct lttng_live_ctx *ctx, | |
922 | struct lttng_live_viewer_stream *viewer_stream, | |
923 | struct packet_index *index) | |
924 | { | |
925 | struct lttng_viewer_cmd cmd; | |
926 | struct lttng_viewer_get_next_index rq; | |
927 | struct lttng_viewer_index rp; | |
928 | int ret; | |
4a744367 JD |
929 | ssize_t ret_len; |
930 | ||
931 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
932 | cmd.data_size = sizeof(rq); | |
933 | cmd.cmd_version = 0; | |
934 | ||
935 | memset(&rq, 0, sizeof(rq)); | |
936 | rq.stream_id = htobe64(viewer_stream->id); | |
937 | ||
938 | retry: | |
8ace20bf MD |
939 | if (lttng_live_should_quit()) { |
940 | ret = -1; | |
941 | goto end; | |
942 | } | |
b7e8a8e1 | 943 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 944 | if (ret_len < 0) { |
79620497 | 945 | perror("[error] Error sending cmd"); |
4a744367 JD |
946 | goto error; |
947 | } | |
948 | assert(ret_len == sizeof(cmd)); | |
949 | ||
b7e8a8e1 | 950 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 951 | if (ret_len < 0) { |
79620497 | 952 | perror("[error] Error sending get_next_index request"); |
4a744367 JD |
953 | goto error; |
954 | } | |
955 | assert(ret_len == sizeof(rq)); | |
956 | ||
b7e8a8e1 | 957 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
958 | if (ret_len == 0) { |
959 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
960 | goto error; |
961 | } | |
4a744367 | 962 | if (ret_len < 0) { |
79620497 | 963 | perror("[error] Error receiving index response"); |
4a744367 JD |
964 | goto error; |
965 | } | |
966 | assert(ret_len == sizeof(rp)); | |
967 | ||
968 | rp.flags = be32toh(rp.flags); | |
969 | ||
970 | switch (be32toh(rp.status)) { | |
971 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
972 | printf_verbose("get_next_index: inactive\n"); | |
973 | memset(index, 0, sizeof(struct packet_index)); | |
992e8cc0 | 974 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); |
4a744367 JD |
975 | break; |
976 | case LTTNG_VIEWER_INDEX_OK: | |
977 | printf_verbose("get_next_index: Ok, need metadata update : %u\n", | |
978 | rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA); | |
979 | index->offset = be64toh(rp.offset); | |
980 | index->packet_size = be64toh(rp.packet_size); | |
981 | index->content_size = be64toh(rp.content_size); | |
992e8cc0 MD |
982 | index->ts_cycles.timestamp_begin = be64toh(rp.timestamp_begin); |
983 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
4a744367 JD |
984 | index->events_discarded = be64toh(rp.events_discarded); |
985 | ||
986 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
50d207af JD |
987 | ret = append_metadata(ctx, viewer_stream); |
988 | if (ret) | |
4a744367 | 989 | goto error; |
4a744367 | 990 | } |
2acdc547 JD |
991 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { |
992 | ret = ask_new_streams(ctx); | |
993 | if (ret < 0) | |
994 | goto error; | |
4d4bf6eb MD |
995 | g_hash_table_foreach(ctx->session->ctf_traces, |
996 | add_traces, ctx->bt_ctx); | |
2acdc547 | 997 | } |
4a744367 JD |
998 | break; |
999 | case LTTNG_VIEWER_INDEX_RETRY: | |
1000 | printf_verbose("get_next_index: retry\n"); | |
85e2085e | 1001 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); |
4a744367 JD |
1002 | goto retry; |
1003 | case LTTNG_VIEWER_INDEX_HUP: | |
1004 | printf_verbose("get_next_index: stream hung up\n"); | |
1005 | viewer_stream->id = -1ULL; | |
4a744367 | 1006 | index->offset = EOF; |
2acdc547 | 1007 | ctx->session->stream_count--; |
4a744367 JD |
1008 | break; |
1009 | case LTTNG_VIEWER_INDEX_ERR: | |
1010 | fprintf(stderr, "[error] get_next_index: error\n"); | |
4a744367 JD |
1011 | goto error; |
1012 | default: | |
1013 | fprintf(stderr, "[error] get_next_index: unkwown value\n"); | |
4a744367 JD |
1014 | goto error; |
1015 | } | |
4a744367 | 1016 | ret = 0; |
8ace20bf MD |
1017 | end: |
1018 | return ret; | |
4a744367 JD |
1019 | |
1020 | error: | |
8ace20bf | 1021 | return -1; |
4a744367 JD |
1022 | } |
1023 | ||
b5a1fa45 | 1024 | static |
4a744367 JD |
1025 | void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, size_t index, |
1026 | int whence) | |
1027 | { | |
1028 | struct ctf_stream_pos *pos; | |
1029 | struct ctf_file_stream *file_stream; | |
f1f52630 | 1030 | struct packet_index *prev_index = NULL, *cur_index; |
4a744367 JD |
1031 | struct lttng_live_viewer_stream *viewer_stream; |
1032 | struct lttng_live_session *session; | |
1033 | int ret; | |
1034 | ||
1035 | retry: | |
1036 | pos = ctf_pos(stream_pos); | |
1037 | file_stream = container_of(pos, struct ctf_file_stream, pos); | |
1038 | viewer_stream = (struct lttng_live_viewer_stream *) pos->priv; | |
1039 | session = viewer_stream->session; | |
1040 | ||
f1f52630 MD |
1041 | switch (pos->packet_index->len) { |
1042 | case 0: | |
1043 | g_array_set_size(pos->packet_index, 1); | |
1044 | cur_index = &g_array_index(pos->packet_index, | |
1045 | struct packet_index, 0); | |
1046 | break; | |
1047 | case 1: | |
1048 | g_array_set_size(pos->packet_index, 2); | |
1049 | prev_index = &g_array_index(pos->packet_index, | |
1050 | struct packet_index, 0); | |
1051 | cur_index = &g_array_index(pos->packet_index, | |
1052 | struct packet_index, 1); | |
1053 | break; | |
1054 | case 2: | |
1055 | g_array_index(pos->packet_index, | |
1056 | struct packet_index, 0) = | |
1057 | g_array_index(pos->packet_index, | |
1058 | struct packet_index, 1); | |
1059 | prev_index = &g_array_index(pos->packet_index, | |
1060 | struct packet_index, 0); | |
1061 | cur_index = &g_array_index(pos->packet_index, | |
1062 | struct packet_index, 1); | |
1063 | break; | |
1064 | default: | |
1065 | abort(); | |
1066 | break; | |
1067 | } | |
4a744367 | 1068 | printf_verbose("get_next_index for stream %" PRIu64 "\n", viewer_stream->id); |
f1f52630 | 1069 | ret = get_next_index(session->ctx, viewer_stream, cur_index); |
4a744367 JD |
1070 | if (ret < 0) { |
1071 | pos->offset = EOF; | |
f28fb4b6 JG |
1072 | if (!lttng_live_should_quit()) { |
1073 | fprintf(stderr, "[error] get_next_index failed\n"); | |
1074 | } | |
4a744367 JD |
1075 | return; |
1076 | } | |
1077 | ||
f1f52630 MD |
1078 | pos->packet_size = cur_index->packet_size; |
1079 | pos->content_size = cur_index->content_size; | |
4a744367 | 1080 | pos->mmap_base_offset = 0; |
f1f52630 | 1081 | if (cur_index->offset == EOF) { |
4a744367 JD |
1082 | pos->offset = EOF; |
1083 | } else { | |
1084 | pos->offset = 0; | |
1085 | } | |
1086 | ||
f1f52630 MD |
1087 | if (cur_index->content_size == 0) { |
1088 | file_stream->parent.cycles_timestamp = | |
1089 | cur_index->ts_cycles.timestamp_end; | |
4a744367 | 1090 | file_stream->parent.real_timestamp = ctf_get_real_timestamp( |
f1f52630 MD |
1091 | &file_stream->parent, |
1092 | cur_index->ts_cycles.timestamp_end); | |
4a744367 | 1093 | } else { |
f1f52630 MD |
1094 | /* Convert the timestamps and append to the real_index. */ |
1095 | cur_index->ts_real.timestamp_begin = ctf_get_real_timestamp( | |
1096 | &file_stream->parent, | |
1097 | cur_index->ts_cycles.timestamp_begin); | |
1098 | cur_index->ts_real.timestamp_end = ctf_get_real_timestamp( | |
1099 | &file_stream->parent, | |
1100 | cur_index->ts_cycles.timestamp_end); | |
1101 | ||
1102 | ctf_update_current_packet_index(&file_stream->parent, | |
1103 | prev_index, cur_index); | |
1104 | ||
1105 | file_stream->parent.cycles_timestamp = | |
1106 | cur_index->ts_cycles.timestamp_begin; | |
1107 | file_stream->parent.real_timestamp = | |
1108 | cur_index->ts_real.timestamp_begin; | |
4a744367 JD |
1109 | } |
1110 | ||
1111 | if (pos->packet_size == 0 || pos->offset == EOF) { | |
1112 | goto end; | |
1113 | } | |
1114 | ||
1115 | printf_verbose("get_data_packet for stream %" PRIu64 "\n", | |
1116 | viewer_stream->id); | |
1117 | ret = get_data_packet(session->ctx, pos, viewer_stream, | |
c1e8ac81 | 1118 | cur_index->offset, |
f1f52630 | 1119 | cur_index->packet_size / CHAR_BIT); |
4a744367 JD |
1120 | if (ret == -2) { |
1121 | goto retry; | |
1122 | } else if (ret < 0) { | |
1123 | pos->offset = EOF; | |
f28fb4b6 JG |
1124 | if (!lttng_live_should_quit()) { |
1125 | fprintf(stderr, "[error] get_data_packet failed\n"); | |
1126 | } | |
4a744367 JD |
1127 | return; |
1128 | } | |
1129 | ||
1130 | printf_verbose("Index received : packet_size : %" PRIu64 | |
1131 | ", offset %" PRIu64 ", content_size %" PRIu64 | |
1132 | ", timestamp_end : %" PRIu64 "\n", | |
f1f52630 MD |
1133 | cur_index->packet_size, cur_index->offset, |
1134 | cur_index->content_size, | |
1135 | cur_index->ts_cycles.timestamp_end); | |
4a744367 JD |
1136 | |
1137 | /* update trace_packet_header and stream_packet_context */ | |
1138 | if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) { | |
1139 | /* Read packet header */ | |
1140 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); | |
1141 | if (ret) { | |
1142 | pos->offset = EOF; | |
1143 | fprintf(stderr, "[error] trace packet header read failed\n"); | |
1144 | goto end; | |
1145 | } | |
1146 | } | |
1147 | if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) { | |
1148 | /* Read packet context */ | |
1149 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); | |
1150 | if (ret) { | |
1151 | pos->offset = EOF; | |
1152 | fprintf(stderr, "[error] stream packet context read failed\n"); | |
1153 | goto end; | |
1154 | } | |
1155 | } | |
1156 | pos->data_offset = pos->offset; | |
1157 | ||
1158 | end: | |
1159 | return; | |
1160 | } | |
1161 | ||
2acdc547 JD |
1162 | int lttng_live_create_viewer_session(struct lttng_live_ctx *ctx) |
1163 | { | |
1164 | struct lttng_viewer_cmd cmd; | |
1165 | struct lttng_viewer_create_session_response resp; | |
1166 | int ret; | |
1167 | ssize_t ret_len; | |
1168 | ||
8ace20bf MD |
1169 | if (lttng_live_should_quit()) { |
1170 | ret = -1; | |
1171 | goto end; | |
1172 | } | |
1173 | ||
2acdc547 JD |
1174 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); |
1175 | cmd.data_size = 0; | |
1176 | cmd.cmd_version = 0; | |
1177 | ||
b7e8a8e1 | 1178 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
2acdc547 | 1179 | if (ret_len < 0) { |
79620497 | 1180 | perror("[error] Error sending cmd"); |
2acdc547 JD |
1181 | goto error; |
1182 | } | |
1183 | assert(ret_len == sizeof(cmd)); | |
1184 | ||
b7e8a8e1 | 1185 | ret_len = lttng_live_recv(ctx->control_sock, &resp, sizeof(resp)); |
f8612f31 MD |
1186 | if (ret_len == 0) { |
1187 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1188 | goto error; |
1189 | } | |
2acdc547 | 1190 | if (ret_len < 0) { |
79620497 | 1191 | perror("[error] Error receiving create session reply"); |
2acdc547 JD |
1192 | goto error; |
1193 | } | |
1194 | assert(ret_len == sizeof(resp)); | |
1195 | ||
1196 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
1197 | fprintf(stderr, "[error] Error creating viewer session\n"); | |
2acdc547 JD |
1198 | goto error; |
1199 | } | |
1200 | ret = 0; | |
8ace20bf MD |
1201 | end: |
1202 | return ret; | |
2acdc547 JD |
1203 | |
1204 | error: | |
8ace20bf | 1205 | return -1; |
2acdc547 JD |
1206 | } |
1207 | ||
1208 | static | |
1209 | int del_traces(gpointer key, gpointer value, gpointer user_data) | |
4a744367 JD |
1210 | { |
1211 | struct bt_context *bt_ctx = user_data; | |
1212 | struct lttng_live_ctf_trace *trace = value; | |
1213 | int ret; | |
1214 | ||
1215 | ret = bt_context_remove_trace(bt_ctx, trace->trace_id); | |
1216 | if (ret < 0) | |
1217 | fprintf(stderr, "[error] removing trace from context\n"); | |
1218 | ||
1219 | /* remove the key/value pair from the HT. */ | |
1220 | return 1; | |
1221 | } | |
1222 | ||
2acdc547 JD |
1223 | static |
1224 | void add_traces(gpointer key, gpointer value, gpointer user_data) | |
4a744367 | 1225 | { |
9abca178 | 1226 | int i, ret; |
4a744367 JD |
1227 | struct bt_context *bt_ctx = user_data; |
1228 | struct lttng_live_ctf_trace *trace = value; | |
1229 | struct lttng_live_viewer_stream *stream; | |
1230 | struct bt_mmap_stream *new_mmap_stream; | |
1231 | struct bt_mmap_stream_list mmap_list; | |
1232 | struct lttng_live_ctx *ctx = NULL; | |
150595c4 JD |
1233 | struct bt_trace_descriptor *td; |
1234 | struct bt_trace_handle *handle; | |
4a744367 | 1235 | |
b5a1fa45 JD |
1236 | /* |
1237 | * We don't know how many streams we will receive for a trace, so | |
1238 | * once we are done receiving the traces, we add all the traces | |
1239 | * received to the bt_context. | |
1240 | * We can receive streams during the attach command or the | |
1241 | * get_new_streams, so we have to make sure not to add multiple | |
1242 | * times the same traces. | |
1243 | * If a trace is already in the context, we just skip this function. | |
1244 | */ | |
2acdc547 JD |
1245 | if (trace->in_use) |
1246 | return; | |
1247 | ||
4a744367 JD |
1248 | BT_INIT_LIST_HEAD(&mmap_list.head); |
1249 | ||
1250 | for (i = 0; i < trace->streams->len; i++) { | |
1251 | stream = g_ptr_array_index(trace->streams, i); | |
1252 | ctx = stream->session->ctx; | |
1253 | ||
1254 | if (!stream->metadata_flag) { | |
1255 | new_mmap_stream = zmalloc(sizeof(struct bt_mmap_stream)); | |
1256 | new_mmap_stream->priv = (void *) stream; | |
1257 | new_mmap_stream->fd = -1; | |
1258 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); | |
1259 | } else { | |
af701dc4 JD |
1260 | char *metadata_buf = NULL; |
1261 | ||
4a744367 | 1262 | /* Get all possible metadata before starting */ |
af701dc4 JD |
1263 | ret = get_new_metadata(ctx, stream, &metadata_buf); |
1264 | if (ret) { | |
1265 | free(metadata_buf); | |
1266 | goto end_free; | |
1267 | } | |
1268 | if (!stream->metadata_len) { | |
1269 | fprintf(stderr, "[error] empty metadata\n"); | |
1270 | ret = -1; | |
1271 | free(metadata_buf); | |
1272 | goto end_free; | |
1273 | } | |
1274 | ||
1275 | trace->metadata_fp = babeltrace_fmemopen(metadata_buf, | |
1276 | stream->metadata_len, "rb"); | |
1277 | if (!trace->metadata_fp) { | |
1278 | perror("Metadata fmemopen"); | |
1279 | ret = -1; | |
1280 | free(metadata_buf); | |
9abca178 | 1281 | goto end_free; |
af701dc4 | 1282 | } |
4a744367 JD |
1283 | } |
1284 | } | |
1285 | ||
1286 | if (!trace->metadata_fp) { | |
1287 | fprintf(stderr, "[error] No metadata stream opened\n"); | |
1288 | goto end_free; | |
1289 | } | |
1290 | ||
1291 | ret = bt_context_add_trace(bt_ctx, NULL, "ctf", | |
1292 | ctf_live_packet_seek, &mmap_list, trace->metadata_fp); | |
1293 | if (ret < 0) { | |
1294 | fprintf(stderr, "[error] Error adding trace\n"); | |
1295 | goto end_free; | |
1296 | } | |
af701dc4 JD |
1297 | trace->metadata_stream->metadata_len = 0; |
1298 | ||
150595c4 JD |
1299 | handle = (struct bt_trace_handle *) g_hash_table_lookup( |
1300 | bt_ctx->trace_handles, | |
1301 | (gpointer) (unsigned long) ret); | |
1302 | td = handle->td; | |
1303 | trace->handle = handle; | |
2acdc547 | 1304 | if (bt_ctx->current_iterator) { |
2acdc547 JD |
1305 | bt_iter_add_trace(bt_ctx->current_iterator, td); |
1306 | } | |
1307 | ||
4a744367 | 1308 | trace->trace_id = ret; |
2acdc547 | 1309 | trace->in_use = 1; |
4a744367 JD |
1310 | |
1311 | goto end; | |
1312 | ||
1313 | end_free: | |
1314 | bt_context_put(bt_ctx); | |
1315 | end: | |
1316 | return; | |
1317 | } | |
1318 | ||
2acdc547 | 1319 | int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id) |
6192b988 JD |
1320 | { |
1321 | struct lttng_viewer_cmd cmd; | |
2acdc547 JD |
1322 | struct lttng_viewer_new_streams_request rq; |
1323 | struct lttng_viewer_new_streams_response rp; | |
1324 | struct lttng_viewer_stream stream; | |
1325 | int ret, i; | |
6192b988 | 1326 | ssize_t ret_len; |
b5a1fa45 | 1327 | uint32_t stream_count; |
6192b988 | 1328 | |
8ace20bf MD |
1329 | if (lttng_live_should_quit()) { |
1330 | ret = -1; | |
1331 | goto end; | |
1332 | } | |
1333 | ||
2acdc547 JD |
1334 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); |
1335 | cmd.data_size = sizeof(rq); | |
6192b988 JD |
1336 | cmd.cmd_version = 0; |
1337 | ||
2acdc547 JD |
1338 | memset(&rq, 0, sizeof(rq)); |
1339 | rq.session_id = htobe64(id); | |
1340 | ||
b7e8a8e1 | 1341 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
6192b988 | 1342 | if (ret_len < 0) { |
79620497 | 1343 | perror("[error] Error sending cmd"); |
6192b988 JD |
1344 | goto error; |
1345 | } | |
1346 | assert(ret_len == sizeof(cmd)); | |
1347 | ||
b7e8a8e1 | 1348 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
6192b988 | 1349 | if (ret_len < 0) { |
79620497 | 1350 | perror("[error] Error sending get_new_streams request"); |
6192b988 JD |
1351 | goto error; |
1352 | } | |
2acdc547 | 1353 | assert(ret_len == sizeof(rq)); |
6192b988 | 1354 | |
b7e8a8e1 | 1355 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
1356 | if (ret_len == 0) { |
1357 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1358 | goto error; |
1359 | } | |
2acdc547 | 1360 | if (ret_len < 0) { |
79620497 | 1361 | perror("[error] Error receiving get_new_streams response"); |
6192b988 JD |
1362 | goto error; |
1363 | } | |
2acdc547 JD |
1364 | assert(ret_len == sizeof(rp)); |
1365 | ||
1366 | switch(be32toh(rp.status)) { | |
1367 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1368 | break; | |
1369 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1370 | ret = 0; | |
1371 | goto end; | |
1372 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1373 | ret = -LTTNG_VIEWER_NEW_STREAMS_HUP; | |
1374 | goto end; | |
1375 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
1376 | fprintf(stderr, "[error] get_new_streams error\n"); | |
8ace20bf | 1377 | goto error; |
2acdc547 JD |
1378 | default: |
1379 | fprintf(stderr, "[error] Unknown return code %u\n", | |
1380 | be32toh(rp.status)); | |
8ace20bf | 1381 | goto error; |
2acdc547 JD |
1382 | } |
1383 | ||
b5a1fa45 JD |
1384 | stream_count = be32toh(rp.streams_count); |
1385 | ctx->session->stream_count += stream_count; | |
2acdc547 JD |
1386 | /* |
1387 | * When the session is created but not started, we do an active wait | |
1388 | * until it starts. It allows the viewer to start processing the trace | |
1389 | * as soon as the session starts. | |
1390 | */ | |
1391 | if (ctx->session->stream_count == 0) { | |
1392 | ret = 0; | |
1393 | goto end; | |
1394 | } | |
1395 | printf_verbose("Waiting for %" PRIu64 " streams:\n", | |
1396 | ctx->session->stream_count); | |
1397 | ctx->session->streams = g_new0(struct lttng_live_viewer_stream, | |
1398 | ctx->session->stream_count); | |
b5a1fa45 | 1399 | for (i = 0; i < stream_count; i++) { |
b7e8a8e1 | 1400 | ret_len = lttng_live_recv(ctx->control_sock, &stream, sizeof(stream)); |
f8612f31 MD |
1401 | if (ret_len == 0) { |
1402 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1403 | goto error; |
1404 | } | |
2acdc547 | 1405 | if (ret_len < 0) { |
79620497 | 1406 | perror("[error] Error receiving stream"); |
2acdc547 JD |
1407 | goto error; |
1408 | } | |
1409 | assert(ret_len == sizeof(stream)); | |
1410 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
1411 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
1412 | ||
1413 | printf_verbose(" stream %" PRIu64 " : %s/%s\n", | |
1414 | be64toh(stream.id), stream.path_name, | |
1415 | stream.channel_name); | |
1416 | ctx->session->streams[i].id = be64toh(stream.id); | |
1417 | ctx->session->streams[i].session = ctx->session; | |
1418 | ||
1419 | ctx->session->streams[i].first_read = 1; | |
1420 | ctx->session->streams[i].mmap_size = 0; | |
1421 | ||
1422 | if (be32toh(stream.metadata_flag)) { | |
2acdc547 | 1423 | ctx->session->streams[i].metadata_flag = 1; |
2acdc547 JD |
1424 | } |
1425 | ret = lttng_live_ctf_trace_assign(&ctx->session->streams[i], | |
1426 | be64toh(stream.ctf_trace_id)); | |
1427 | if (ret < 0) { | |
1428 | goto error; | |
1429 | } | |
1430 | ||
1431 | } | |
6192b988 | 1432 | ret = 0; |
2acdc547 | 1433 | end: |
6192b988 | 1434 | return ret; |
8ace20bf MD |
1435 | |
1436 | error: | |
1437 | return -1; | |
6192b988 JD |
1438 | } |
1439 | ||
23285bf3 | 1440 | int lttng_live_read(struct lttng_live_ctx *ctx) |
4a744367 | 1441 | { |
23285bf3 JG |
1442 | int ret = -1; |
1443 | int i; | |
4a744367 JD |
1444 | struct bt_ctf_iter *iter; |
1445 | const struct bt_ctf_event *event; | |
1446 | struct bt_iter_pos begin_pos; | |
1447 | struct bt_trace_descriptor *td_write; | |
1448 | struct bt_format *fmt_write; | |
1449 | struct ctf_text_stream_pos *sout; | |
2acdc547 | 1450 | uint64_t id; |
4a744367 | 1451 | |
2acdc547 JD |
1452 | ctx->bt_ctx = bt_context_create(); |
1453 | if (!ctx->bt_ctx) { | |
4a744367 JD |
1454 | fprintf(stderr, "[error] bt_context_create allocation\n"); |
1455 | goto end; | |
1456 | } | |
1457 | ||
1458 | fmt_write = bt_lookup_format(g_quark_from_static_string("text")); | |
1459 | if (!fmt_write) { | |
1460 | fprintf(stderr, "[error] ctf-text error\n"); | |
1461 | goto end; | |
1462 | } | |
1463 | ||
1464 | td_write = fmt_write->open_trace(NULL, O_RDWR, NULL, NULL); | |
1465 | if (!td_write) { | |
1466 | fprintf(stderr, "[error] Error opening output trace\n"); | |
1467 | goto end_free; | |
1468 | } | |
1469 | ||
1470 | sout = container_of(td_write, struct ctf_text_stream_pos, | |
1471 | trace_descriptor); | |
85bb4663 | 1472 | if (!sout->parent.event_cb) { |
4a744367 | 1473 | goto end_free; |
85bb4663 | 1474 | } |
4a744367 | 1475 | |
6192b988 JD |
1476 | ret = lttng_live_create_viewer_session(ctx); |
1477 | if (ret < 0) { | |
1478 | goto end_free; | |
1479 | } | |
1480 | ||
2acdc547 JD |
1481 | for (i = 0; i < ctx->session_ids->len; i++) { |
1482 | id = g_array_index(ctx->session_ids, uint64_t, i); | |
1483 | printf_verbose("Attaching to session %lu\n", id); | |
1484 | ret = lttng_live_attach_session(ctx, id); | |
1485 | printf_verbose("Attaching session returns %d\n", ret); | |
1486 | if (ret < 0) { | |
1487 | if (ret == -LTTNG_VIEWER_ATTACH_UNK) { | |
1488 | fprintf(stderr, "[error] Unknown session ID\n"); | |
1489 | } | |
1490 | goto end_free; | |
1491 | } | |
1492 | } | |
1493 | ||
4a744367 | 1494 | /* |
2acdc547 | 1495 | * As long as the session is active, we try to get new streams. |
4a744367 | 1496 | */ |
2acdc547 | 1497 | for (;;) { |
4a744367 JD |
1498 | int flags; |
1499 | ||
8ace20bf | 1500 | if (lttng_live_should_quit()) { |
23285bf3 | 1501 | ret = 0; |
8ace20bf MD |
1502 | goto end_free; |
1503 | } | |
1504 | ||
2acdc547 | 1505 | while (!ctx->session->stream_count) { |
8ace20bf MD |
1506 | if (lttng_live_should_quit() |
1507 | || ctx->session_ids->len == 0) { | |
23285bf3 | 1508 | ret = 0; |
4a744367 | 1509 | goto end_free; |
85bb4663 | 1510 | } |
2acdc547 | 1511 | ret = ask_new_streams(ctx); |
85bb4663 | 1512 | if (ret < 0) { |
2acdc547 | 1513 | goto end_free; |
85bb4663 MD |
1514 | } |
1515 | if (!ctx->session->stream_count) { | |
85e2085e | 1516 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); |
85bb4663 | 1517 | } |
2acdc547 | 1518 | } |
4a744367 | 1519 | |
2acdc547 JD |
1520 | g_hash_table_foreach(ctx->session->ctf_traces, add_traces, |
1521 | ctx->bt_ctx); | |
4a744367 JD |
1522 | |
1523 | begin_pos.type = BT_SEEK_BEGIN; | |
2acdc547 | 1524 | iter = bt_ctf_iter_create(ctx->bt_ctx, &begin_pos, NULL); |
4a744367 | 1525 | if (!iter) { |
f28fb4b6 JG |
1526 | if (lttng_live_should_quit()) { |
1527 | ret = 0; | |
1528 | goto end; | |
1529 | } | |
4a744367 JD |
1530 | fprintf(stderr, "[error] Iterator creation error\n"); |
1531 | goto end; | |
1532 | } | |
1533 | for (;;) { | |
8ace20bf | 1534 | if (lttng_live_should_quit()) { |
23285bf3 | 1535 | ret = 0; |
8ace20bf MD |
1536 | goto end_free; |
1537 | } | |
4a744367 JD |
1538 | event = bt_ctf_iter_read_event_flags(iter, &flags); |
1539 | if (!(flags & BT_ITER_FLAG_RETRY)) { | |
1540 | if (!event) { | |
1541 | /* End of trace */ | |
1542 | break; | |
1543 | } | |
1544 | ret = sout->parent.event_cb(&sout->parent, | |
1545 | event->parent->stream); | |
1546 | if (ret) { | |
1547 | fprintf(stderr, "[error] Writing " | |
1548 | "event failed.\n"); | |
1549 | goto end_free; | |
1550 | } | |
1551 | } | |
1552 | ret = bt_iter_next(bt_ctf_get_iter(iter)); | |
1553 | if (ret < 0) { | |
1554 | goto end_free; | |
1555 | } | |
1556 | } | |
1557 | bt_ctf_iter_destroy(iter); | |
2acdc547 JD |
1558 | g_hash_table_foreach_remove(ctx->session->ctf_traces, |
1559 | del_traces, ctx->bt_ctx); | |
1560 | ctx->session->stream_count = 0; | |
1561 | } | |
4a744367 JD |
1562 | |
1563 | end_free: | |
2acdc547 | 1564 | bt_context_put(ctx->bt_ctx); |
4a744367 | 1565 | end: |
f28fb4b6 JG |
1566 | if (lttng_live_should_quit()) { |
1567 | ret = 0; | |
1568 | } | |
23285bf3 | 1569 | return ret; |
4a744367 | 1570 | } |