Commit | Line | Data |
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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 | ||
af701dc4 JD |
53 | #include <babeltrace/compat/memstream.h> |
54 | ||
c98627ca | 55 | #include "lttng-live.h" |
158eea6e | 56 | #include "lttng-viewer-abi.h" |
4a744367 | 57 | |
85e2085e MD |
58 | #define ACTIVE_POLL_DELAY 100 /* ms */ |
59 | ||
4a744367 JD |
60 | /* |
61 | * Memory allocation zeroed | |
62 | */ | |
63 | #define zmalloc(x) calloc(1, x) | |
64 | ||
65 | #ifndef max_t | |
66 | #define max_t(type, a, b) \ | |
67 | ((type) (a) > (type) (b) ? (type) (a) : (type) (b)) | |
68 | #endif | |
69 | ||
b5a1fa45 JD |
70 | static void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, |
71 | size_t index, int whence); | |
2acdc547 JD |
72 | static void add_traces(gpointer key, gpointer value, gpointer user_data); |
73 | static int del_traces(gpointer key, gpointer value, gpointer user_data); | |
9abca178 | 74 | static int get_new_metadata(struct lttng_live_ctx *ctx, |
af701dc4 JD |
75 | struct lttng_live_viewer_stream *viewer_stream, |
76 | char **metadata_buf); | |
2acdc547 | 77 | |
b7e8a8e1 MD |
78 | static |
79 | ssize_t lttng_live_recv(int fd, void *buf, size_t len) | |
80 | { | |
81 | ssize_t ret; | |
82 | size_t copied = 0, to_copy = len; | |
83 | ||
84 | do { | |
85 | ret = recv(fd, buf + copied, to_copy, 0); | |
86 | if (ret > 0) { | |
87 | assert(ret <= to_copy); | |
88 | copied += ret; | |
89 | to_copy -= ret; | |
90 | } | |
91 | } while ((ret > 0 && to_copy > 0) | |
92 | || (ret < 0 && errno == EINTR)); | |
93 | if (ret > 0) | |
94 | ret = copied; | |
95 | /* ret = 0 means orderly shutdown, ret < 0 is error. */ | |
96 | return ret; | |
97 | } | |
98 | ||
99 | static | |
100 | ssize_t lttng_live_send(int fd, const void *buf, size_t len) | |
101 | { | |
102 | ssize_t ret; | |
103 | ||
104 | do { | |
105 | ret = send(fd, buf, len, MSG_NOSIGNAL); | |
106 | } while (ret < 0 && errno == EINTR); | |
107 | return ret; | |
108 | } | |
109 | ||
b5a1fa45 | 110 | int lttng_live_connect_viewer(struct lttng_live_ctx *ctx) |
4a744367 JD |
111 | { |
112 | struct hostent *host; | |
113 | struct sockaddr_in server_addr; | |
114 | int ret; | |
115 | ||
8ace20bf | 116 | if (lttng_live_should_quit()) { |
4a744367 JD |
117 | ret = -1; |
118 | goto end; | |
119 | } | |
120 | ||
8ace20bf MD |
121 | host = gethostbyname(ctx->relay_hostname); |
122 | if (!host) { | |
123 | fprintf(stderr, "[error] Cannot lookup hostname %s\n", | |
124 | ctx->relay_hostname); | |
125 | goto error; | |
126 | } | |
127 | ||
4a744367 JD |
128 | if ((ctx->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { |
129 | perror("Socket"); | |
8ace20bf | 130 | goto error; |
4a744367 JD |
131 | } |
132 | ||
133 | server_addr.sin_family = AF_INET; | |
b5a1fa45 | 134 | server_addr.sin_port = htons(ctx->port); |
4a744367 JD |
135 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); |
136 | bzero(&(server_addr.sin_zero), 8); | |
137 | ||
138 | if (connect(ctx->control_sock, (struct sockaddr *) &server_addr, | |
139 | sizeof(struct sockaddr)) == -1) { | |
140 | perror("Connect"); | |
8ace20bf | 141 | goto error; |
4a744367 JD |
142 | } |
143 | ||
144 | ret = 0; | |
145 | ||
146 | end: | |
147 | return ret; | |
8ace20bf MD |
148 | |
149 | error: | |
150 | fprintf(stderr, "[error] Connection failed\n"); | |
151 | return -1; | |
4a744367 JD |
152 | } |
153 | ||
154 | int lttng_live_establish_connection(struct lttng_live_ctx *ctx) | |
155 | { | |
156 | struct lttng_viewer_cmd cmd; | |
157 | struct lttng_viewer_connect connect; | |
158 | int ret; | |
159 | ssize_t ret_len; | |
160 | ||
8ace20bf MD |
161 | if (lttng_live_should_quit()) { |
162 | ret = -1; | |
163 | goto end; | |
164 | } | |
165 | ||
4a744367 JD |
166 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); |
167 | cmd.data_size = sizeof(connect); | |
168 | cmd.cmd_version = 0; | |
169 | ||
0c3cd7e1 | 170 | connect.viewer_session_id = -1ULL; /* will be set on recv */ |
4a744367 JD |
171 | connect.major = htobe32(LTTNG_LIVE_MAJOR); |
172 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
173 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
174 | ||
b7e8a8e1 | 175 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 176 | if (ret_len < 0) { |
79620497 | 177 | perror("[error] Error sending cmd"); |
4a744367 JD |
178 | goto error; |
179 | } | |
180 | assert(ret_len == sizeof(cmd)); | |
181 | ||
b7e8a8e1 | 182 | ret_len = lttng_live_send(ctx->control_sock, &connect, sizeof(connect)); |
4a744367 | 183 | if (ret_len < 0) { |
79620497 | 184 | perror("[error] Error sending version"); |
4a744367 JD |
185 | goto error; |
186 | } | |
187 | assert(ret_len == sizeof(connect)); | |
188 | ||
b7e8a8e1 | 189 | ret_len = lttng_live_recv(ctx->control_sock, &connect, sizeof(connect)); |
f8612f31 MD |
190 | if (ret_len == 0) { |
191 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
192 | goto error; |
193 | } | |
4a744367 | 194 | if (ret_len < 0) { |
79620497 | 195 | perror("[error] Error receiving version"); |
4a744367 JD |
196 | goto error; |
197 | } | |
198 | assert(ret_len == sizeof(connect)); | |
199 | ||
200 | printf_verbose("Received viewer session ID : %" PRIu64 "\n", | |
201 | be64toh(connect.viewer_session_id)); | |
202 | printf_verbose("Relayd version : %u.%u\n", be32toh(connect.major), | |
203 | be32toh(connect.minor)); | |
4a744367 | 204 | ret = 0; |
8ace20bf MD |
205 | end: |
206 | return ret; | |
4a744367 JD |
207 | |
208 | error: | |
8ace20bf MD |
209 | fprintf(stderr, "[error] Unable to establish connection\n"); |
210 | return -1; | |
4a744367 JD |
211 | } |
212 | ||
b5a1fa45 JD |
213 | static |
214 | void free_session_list(GPtrArray *session_list) | |
215 | { | |
216 | int i; | |
217 | struct lttng_live_relay_session *relay_session; | |
218 | ||
219 | for (i = 0; i < session_list->len; i++) { | |
220 | relay_session = g_ptr_array_index(session_list, i); | |
221 | free(relay_session->name); | |
222 | free(relay_session->hostname); | |
223 | } | |
224 | g_ptr_array_free(session_list, TRUE); | |
225 | } | |
226 | ||
227 | static | |
228 | void print_session_list(GPtrArray *session_list, const char *path) | |
229 | { | |
230 | int i; | |
231 | struct lttng_live_relay_session *relay_session; | |
232 | ||
233 | for (i = 0; i < session_list->len; i++) { | |
234 | relay_session = g_ptr_array_index(session_list, i); | |
235 | fprintf(stdout, "%s/host/%s/%s (timer = %u, " | |
236 | "%u stream(s), %u client(s) connected)\n", | |
237 | path, relay_session->hostname, | |
238 | relay_session->name, relay_session->timer, | |
239 | relay_session->streams, relay_session->clients); | |
240 | } | |
241 | } | |
242 | ||
243 | static | |
244 | void update_session_list(GPtrArray *session_list, char *hostname, | |
245 | char *session_name, uint32_t streams, uint32_t clients, | |
246 | uint32_t timer) | |
247 | { | |
248 | int i, found = 0; | |
249 | struct lttng_live_relay_session *relay_session; | |
250 | ||
251 | for (i = 0; i < session_list->len; i++) { | |
252 | relay_session = g_ptr_array_index(session_list, i); | |
253 | if ((strncmp(relay_session->hostname, hostname, NAME_MAX) == 0) && | |
254 | strncmp(relay_session->name, | |
255 | session_name, NAME_MAX) == 0) { | |
256 | relay_session->streams += streams; | |
257 | if (relay_session->clients < clients) | |
258 | relay_session->clients = clients; | |
259 | found = 1; | |
260 | break; | |
261 | } | |
262 | } | |
263 | if (found) | |
264 | return; | |
265 | ||
266 | relay_session = g_new0(struct lttng_live_relay_session, 1); | |
267 | relay_session->hostname = strndup(hostname, NAME_MAX); | |
268 | relay_session->name = strndup(session_name, NAME_MAX); | |
269 | relay_session->clients = clients; | |
270 | relay_session->streams = streams; | |
271 | relay_session->timer = timer; | |
272 | g_ptr_array_add(session_list, relay_session); | |
273 | } | |
274 | ||
4a744367 JD |
275 | int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path) |
276 | { | |
277 | struct lttng_viewer_cmd cmd; | |
278 | struct lttng_viewer_list_sessions list; | |
279 | struct lttng_viewer_session lsession; | |
b5a1fa45 | 280 | int i, ret, sessions_count, print_list = 0; |
4a744367 | 281 | ssize_t ret_len; |
b5a1fa45 JD |
282 | uint64_t session_id; |
283 | GPtrArray *session_list = NULL; | |
284 | ||
8ace20bf MD |
285 | if (lttng_live_should_quit()) { |
286 | ret = -1; | |
287 | goto end; | |
288 | } | |
289 | ||
b5a1fa45 JD |
290 | if (strlen(ctx->session_name) == 0) { |
291 | print_list = 1; | |
292 | session_list = g_ptr_array_new(); | |
293 | } | |
4a744367 JD |
294 | |
295 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
296 | cmd.data_size = 0; | |
297 | cmd.cmd_version = 0; | |
298 | ||
b7e8a8e1 | 299 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 300 | if (ret_len < 0) { |
79620497 | 301 | perror("[error] Error sending cmd"); |
4a744367 JD |
302 | goto error; |
303 | } | |
304 | assert(ret_len == sizeof(cmd)); | |
305 | ||
b7e8a8e1 | 306 | ret_len = lttng_live_recv(ctx->control_sock, &list, sizeof(list)); |
f8612f31 MD |
307 | if (ret_len == 0) { |
308 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
309 | goto error; |
310 | } | |
4a744367 | 311 | if (ret_len < 0) { |
79620497 | 312 | perror("[error] Error receiving session list"); |
4a744367 JD |
313 | goto error; |
314 | } | |
315 | assert(ret_len == sizeof(list)); | |
316 | ||
317 | sessions_count = be32toh(list.sessions_count); | |
4a744367 | 318 | for (i = 0; i < sessions_count; i++) { |
b7e8a8e1 | 319 | ret_len = lttng_live_recv(ctx->control_sock, &lsession, sizeof(lsession)); |
f8612f31 MD |
320 | if (ret_len == 0) { |
321 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
322 | goto error; |
323 | } | |
4a744367 | 324 | if (ret_len < 0) { |
79620497 | 325 | perror("[error] Error receiving session"); |
4a744367 JD |
326 | goto error; |
327 | } | |
328 | assert(ret_len == sizeof(lsession)); | |
9ed31e53 MD |
329 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
330 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
b5a1fa45 JD |
331 | session_id = be64toh(lsession.id); |
332 | ||
333 | if (print_list) { | |
334 | update_session_list(session_list, | |
335 | lsession.hostname, | |
336 | lsession.session_name, | |
337 | be32toh(lsession.streams), | |
338 | be32toh(lsession.clients), | |
339 | be32toh(lsession.live_timer)); | |
340 | } else { | |
341 | if ((strncmp(lsession.session_name, ctx->session_name, | |
342 | NAME_MAX) == 0) && (strncmp(lsession.hostname, | |
343 | ctx->traced_hostname, NAME_MAX) == 0)) { | |
344 | printf_verbose("Reading from session %" PRIu64 "\n", | |
345 | session_id); | |
346 | g_array_append_val(ctx->session_ids, | |
347 | session_id); | |
348 | } | |
349 | } | |
350 | } | |
4a744367 | 351 | |
b5a1fa45 JD |
352 | if (print_list) { |
353 | print_session_list(session_list, path); | |
354 | free_session_list(session_list); | |
4a744367 | 355 | } |
4a744367 | 356 | ret = 0; |
8ace20bf MD |
357 | end: |
358 | return ret; | |
4a744367 JD |
359 | |
360 | error: | |
8ace20bf MD |
361 | fprintf(stderr, "[error] Unable to list sessions\n"); |
362 | return -1; | |
4a744367 JD |
363 | } |
364 | ||
365 | int lttng_live_ctf_trace_assign(struct lttng_live_viewer_stream *stream, | |
366 | uint64_t ctf_trace_id) | |
367 | { | |
368 | struct lttng_live_ctf_trace *trace; | |
369 | int ret = 0; | |
370 | ||
371 | trace = g_hash_table_lookup(stream->session->ctf_traces, | |
372 | (gpointer) ctf_trace_id); | |
373 | if (!trace) { | |
374 | trace = g_new0(struct lttng_live_ctf_trace, 1); | |
4a744367 JD |
375 | trace->ctf_trace_id = ctf_trace_id; |
376 | trace->streams = g_ptr_array_new(); | |
377 | g_hash_table_insert(stream->session->ctf_traces, | |
378 | (gpointer) ctf_trace_id, | |
379 | trace); | |
380 | } | |
381 | if (stream->metadata_flag) | |
382 | trace->metadata_stream = stream; | |
383 | ||
384 | stream->ctf_trace = trace; | |
385 | g_ptr_array_add(trace->streams, stream); | |
386 | ||
4a744367 JD |
387 | return ret; |
388 | } | |
389 | ||
af701dc4 JD |
390 | static |
391 | int open_metadata_fp_write(struct lttng_live_viewer_stream *stream, | |
392 | char **metadata_buf, size_t *size) | |
393 | { | |
394 | int ret = 0; | |
395 | ||
396 | stream->metadata_fp_write = | |
397 | babeltrace_open_memstream(metadata_buf, size); | |
398 | if (!stream->metadata_fp_write) { | |
399 | perror("Metadata open_memstream"); | |
400 | ret = -1; | |
401 | } | |
402 | ||
403 | return ret; | |
404 | } | |
405 | ||
4a744367 JD |
406 | int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id) |
407 | { | |
408 | struct lttng_viewer_cmd cmd; | |
409 | struct lttng_viewer_attach_session_request rq; | |
410 | struct lttng_viewer_attach_session_response rp; | |
411 | struct lttng_viewer_stream stream; | |
412 | int ret, i; | |
413 | ssize_t ret_len; | |
414 | ||
8ace20bf MD |
415 | if (lttng_live_should_quit()) { |
416 | ret = -1; | |
417 | goto end; | |
418 | } | |
419 | ||
4a744367 JD |
420 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
421 | cmd.data_size = sizeof(rq); | |
422 | cmd.cmd_version = 0; | |
423 | ||
424 | memset(&rq, 0, sizeof(rq)); | |
425 | rq.session_id = htobe64(id); | |
426 | // TODO: add cmd line parameter to select seek beginning | |
427 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
428 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
429 | ||
b7e8a8e1 | 430 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 431 | if (ret_len < 0) { |
79620497 | 432 | perror("[error] Error sending cmd"); |
4a744367 JD |
433 | goto error; |
434 | } | |
435 | assert(ret_len == sizeof(cmd)); | |
436 | ||
b7e8a8e1 | 437 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 438 | if (ret_len < 0) { |
79620497 | 439 | perror("[error] Error sending attach request"); |
4a744367 JD |
440 | goto error; |
441 | } | |
442 | assert(ret_len == sizeof(rq)); | |
443 | ||
b7e8a8e1 | 444 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
445 | if (ret_len == 0) { |
446 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
447 | goto error; |
448 | } | |
4a744367 | 449 | if (ret_len < 0) { |
79620497 | 450 | perror("[error] Error receiving attach response"); |
4a744367 JD |
451 | goto error; |
452 | } | |
453 | assert(ret_len == sizeof(rp)); | |
454 | ||
455 | switch(be32toh(rp.status)) { | |
456 | case LTTNG_VIEWER_ATTACH_OK: | |
457 | break; | |
458 | case LTTNG_VIEWER_ATTACH_UNK: | |
459 | ret = -LTTNG_VIEWER_ATTACH_UNK; | |
460 | goto end; | |
461 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
79620497 | 462 | fprintf(stderr, "[error] There is already a viewer attached to this session\n"); |
8ace20bf | 463 | goto error; |
4a744367 JD |
464 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: |
465 | fprintf(stderr, "[error] Not a live session\n"); | |
8ace20bf | 466 | goto error; |
4a744367 JD |
467 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: |
468 | fprintf(stderr, "[error] Wrong seek parameter\n"); | |
8ace20bf | 469 | goto error; |
4a744367 JD |
470 | default: |
471 | fprintf(stderr, "[error] Unknown attach return code %u\n", | |
472 | be32toh(rp.status)); | |
8ace20bf | 473 | goto error; |
4a744367 JD |
474 | } |
475 | if (be32toh(rp.status) != LTTNG_VIEWER_ATTACH_OK) { | |
8ace20bf | 476 | goto error; |
4a744367 JD |
477 | } |
478 | ||
2acdc547 | 479 | ctx->session->stream_count += be32toh(rp.streams_count); |
4a744367 JD |
480 | /* |
481 | * When the session is created but not started, we do an active wait | |
482 | * until it starts. It allows the viewer to start processing the trace | |
483 | * as soon as the session starts. | |
484 | */ | |
485 | if (ctx->session->stream_count == 0) { | |
486 | ret = 0; | |
487 | goto end; | |
488 | } | |
489 | printf_verbose("Waiting for %" PRIu64 " streams:\n", | |
490 | ctx->session->stream_count); | |
491 | ctx->session->streams = g_new0(struct lttng_live_viewer_stream, | |
492 | ctx->session->stream_count); | |
4a744367 | 493 | for (i = 0; i < be32toh(rp.streams_count); i++) { |
b7e8a8e1 | 494 | ret_len = lttng_live_recv(ctx->control_sock, &stream, sizeof(stream)); |
f8612f31 MD |
495 | if (ret_len == 0) { |
496 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
497 | goto error; |
498 | } | |
4a744367 | 499 | if (ret_len < 0) { |
79620497 | 500 | perror("[error] Error receiving stream"); |
4a744367 JD |
501 | goto error; |
502 | } | |
503 | assert(ret_len == sizeof(stream)); | |
9ed31e53 MD |
504 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
505 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
4a744367 JD |
506 | |
507 | printf_verbose(" stream %" PRIu64 " : %s/%s\n", | |
508 | be64toh(stream.id), stream.path_name, | |
509 | stream.channel_name); | |
510 | ctx->session->streams[i].id = be64toh(stream.id); | |
511 | ctx->session->streams[i].session = ctx->session; | |
512 | ||
513 | ctx->session->streams[i].first_read = 1; | |
514 | ctx->session->streams[i].mmap_size = 0; | |
515 | ||
516 | if (be32toh(stream.metadata_flag)) { | |
4a744367 | 517 | ctx->session->streams[i].metadata_flag = 1; |
4a744367 JD |
518 | } |
519 | ret = lttng_live_ctf_trace_assign(&ctx->session->streams[i], | |
520 | be64toh(stream.ctf_trace_id)); | |
521 | if (ret < 0) { | |
522 | goto error; | |
523 | } | |
524 | ||
525 | } | |
526 | ret = 0; | |
4a744367 | 527 | end: |
4a744367 | 528 | return ret; |
8ace20bf MD |
529 | |
530 | error: | |
531 | return -1; | |
4a744367 JD |
532 | } |
533 | ||
73b2b0d1 JD |
534 | /* |
535 | * Ask the relay for new streams. | |
536 | * | |
537 | * Returns the number of new streams received or a negative value on error. | |
538 | */ | |
2acdc547 JD |
539 | static |
540 | int ask_new_streams(struct lttng_live_ctx *ctx) | |
541 | { | |
73b2b0d1 | 542 | int i, ret = 0, nb_streams = 0; |
2acdc547 JD |
543 | uint64_t id; |
544 | ||
545 | restart: | |
546 | for (i = 0; i < ctx->session_ids->len; i++) { | |
547 | id = g_array_index(ctx->session_ids, uint64_t, i); | |
548 | ret = lttng_live_get_new_streams(ctx, id); | |
73b2b0d1 | 549 | printf_verbose("Asking for new streams returns %d\n", ret); |
2acdc547 | 550 | if (ret < 0) { |
e29395a8 JG |
551 | if (lttng_live_should_quit()) { |
552 | goto end; | |
553 | } | |
2acdc547 JD |
554 | if (ret == -LTTNG_VIEWER_NEW_STREAMS_HUP) { |
555 | printf_verbose("Session %" PRIu64 " closed\n", | |
556 | id); | |
b5a1fa45 JD |
557 | /* |
558 | * The streams have already been closed during | |
559 | * the reading, so we only need to get rid of | |
560 | * the trace in our internal table of sessions. | |
561 | */ | |
2acdc547 JD |
562 | g_array_remove_index(ctx->session_ids, i); |
563 | /* | |
564 | * We can't continue iterating on the g_array | |
565 | * after a remove, we have to start again. | |
566 | */ | |
567 | goto restart; | |
568 | } else { | |
569 | ret = -1; | |
570 | goto end; | |
571 | } | |
73b2b0d1 JD |
572 | } else { |
573 | nb_streams += ret; | |
2acdc547 JD |
574 | } |
575 | } | |
73b2b0d1 | 576 | ret = nb_streams; |
2acdc547 JD |
577 | |
578 | end: | |
579 | return ret; | |
580 | } | |
581 | ||
50d207af JD |
582 | static |
583 | int append_metadata(struct lttng_live_ctx *ctx, | |
584 | struct lttng_live_viewer_stream *viewer_stream) | |
585 | { | |
586 | int ret; | |
587 | struct lttng_live_viewer_stream *metadata; | |
588 | char *metadata_buf = NULL; | |
589 | ||
590 | printf_verbose("get_next_index: new metadata needed\n"); | |
591 | ret = get_new_metadata(ctx, viewer_stream, &metadata_buf); | |
592 | if (ret < 0) { | |
593 | free(metadata_buf); | |
594 | goto error; | |
595 | } | |
596 | ||
597 | metadata = viewer_stream->ctf_trace->metadata_stream; | |
598 | metadata->ctf_trace->metadata_fp = | |
599 | babeltrace_fmemopen(metadata_buf, | |
600 | metadata->metadata_len, "rb"); | |
601 | if (!metadata->ctf_trace->metadata_fp) { | |
602 | perror("Metadata fmemopen"); | |
603 | free(metadata_buf); | |
604 | ret = -1; | |
605 | goto error; | |
606 | } | |
607 | ret = ctf_append_trace_metadata( | |
608 | viewer_stream->ctf_trace->handle->td, | |
609 | metadata->ctf_trace->metadata_fp); | |
251fc08c MD |
610 | /* We accept empty metadata packets */ |
611 | if (ret != 0 && ret != -ENOENT) { | |
50d207af JD |
612 | fprintf(stderr, "[error] Appending metadata\n"); |
613 | goto error; | |
614 | } | |
251fc08c | 615 | ret = 0; |
50d207af JD |
616 | |
617 | error: | |
618 | return ret; | |
619 | } | |
620 | ||
4a744367 JD |
621 | static |
622 | int get_data_packet(struct lttng_live_ctx *ctx, | |
623 | struct ctf_stream_pos *pos, | |
624 | struct lttng_live_viewer_stream *stream, uint64_t offset, | |
625 | uint64_t len) | |
626 | { | |
627 | struct lttng_viewer_cmd cmd; | |
628 | struct lttng_viewer_get_packet rq; | |
629 | struct lttng_viewer_trace_packet rp; | |
630 | ssize_t ret_len; | |
631 | int ret; | |
632 | ||
50d207af | 633 | retry: |
8ace20bf MD |
634 | if (lttng_live_should_quit()) { |
635 | ret = -1; | |
636 | goto end; | |
637 | } | |
4a744367 JD |
638 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); |
639 | cmd.data_size = sizeof(rq); | |
640 | cmd.cmd_version = 0; | |
641 | ||
642 | memset(&rq, 0, sizeof(rq)); | |
643 | rq.stream_id = htobe64(stream->id); | |
c1e8ac81 | 644 | rq.offset = htobe64(offset); |
4a744367 JD |
645 | rq.len = htobe32(len); |
646 | ||
b7e8a8e1 | 647 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 648 | if (ret_len < 0) { |
79620497 | 649 | perror("[error] Error sending cmd"); |
4a744367 JD |
650 | goto error; |
651 | } | |
652 | assert(ret_len == sizeof(cmd)); | |
653 | ||
b7e8a8e1 | 654 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 655 | if (ret_len < 0) { |
79620497 | 656 | perror("[error] Error sending get_data_packet request"); |
4a744367 JD |
657 | goto error; |
658 | } | |
659 | assert(ret_len == sizeof(rq)); | |
660 | ||
b7e8a8e1 | 661 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
662 | if (ret_len == 0) { |
663 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
664 | goto error; |
665 | } | |
4a744367 | 666 | if (ret_len < 0) { |
79620497 | 667 | perror("[error] Error receiving data response"); |
4a744367 JD |
668 | goto error; |
669 | } | |
57b9d843 JD |
670 | if (ret_len != sizeof(rp)) { |
671 | fprintf(stderr, "[error] get_data_packet: expected %" PRId64 | |
a5e4b11e MD |
672 | ", received %" PRId64 "\n", sizeof(rp), |
673 | ret_len); | |
57b9d843 JD |
674 | goto error; |
675 | } | |
4a744367 JD |
676 | |
677 | rp.flags = be32toh(rp.flags); | |
678 | ||
679 | switch (be32toh(rp.status)) { | |
680 | case LTTNG_VIEWER_GET_PACKET_OK: | |
681 | len = be32toh(rp.len); | |
682 | printf_verbose("get_data_packet: Ok, packet size : %" PRIu64 | |
683 | "\n", len); | |
684 | break; | |
685 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
8ace20bf | 686 | /* Unimplemented by relay daemon */ |
4a744367 | 687 | printf_verbose("get_data_packet: retry\n"); |
8ace20bf | 688 | goto error; |
4a744367 JD |
689 | case LTTNG_VIEWER_GET_PACKET_ERR: |
690 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
691 | printf_verbose("get_data_packet: new metadata needed\n"); | |
50d207af JD |
692 | ret = append_metadata(ctx, stream); |
693 | if (ret) | |
694 | goto error; | |
4a744367 | 695 | } |
2acdc547 | 696 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { |
f312b3aa | 697 | printf_verbose("get_data_packet: new streams needed\n"); |
2acdc547 JD |
698 | ret = ask_new_streams(ctx); |
699 | if (ret < 0) | |
700 | goto error; | |
73b2b0d1 JD |
701 | else if (ret > 0) |
702 | g_hash_table_foreach(ctx->session->ctf_traces, | |
703 | add_traces, ctx->bt_ctx); | |
2acdc547 | 704 | } |
f312b3aa MD |
705 | if (rp.flags & (LTTNG_VIEWER_FLAG_NEW_METADATA |
706 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
707 | goto retry; | |
708 | } | |
4a744367 | 709 | fprintf(stderr, "[error] get_data_packet: error\n"); |
8ace20bf | 710 | goto error; |
4a744367 JD |
711 | case LTTNG_VIEWER_GET_PACKET_EOF: |
712 | ret = -2; | |
8ace20bf | 713 | goto end; |
4a744367 JD |
714 | default: |
715 | printf_verbose("get_data_packet: unknown\n"); | |
8ace20bf | 716 | goto error; |
4a744367 JD |
717 | } |
718 | ||
65ae9a82 | 719 | if (len == 0) { |
96943040 | 720 | goto error; |
4a744367 JD |
721 | } |
722 | ||
723 | if (len > stream->mmap_size) { | |
724 | uint64_t new_size; | |
725 | ||
726 | new_size = max_t(uint64_t, len, stream->mmap_size << 1); | |
727 | if (pos->base_mma) { | |
728 | /* unmap old base */ | |
729 | ret = munmap_align(pos->base_mma); | |
730 | if (ret) { | |
79620497 | 731 | perror("[error] Unable to unmap old base"); |
4a744367 JD |
732 | goto error; |
733 | } | |
734 | pos->base_mma = NULL; | |
735 | } | |
736 | pos->base_mma = mmap_align(new_size, | |
737 | PROT_READ | PROT_WRITE, | |
738 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
739 | if (pos->base_mma == MAP_FAILED) { | |
79620497 | 740 | perror("[error] mmap error"); |
4a744367 | 741 | pos->base_mma = NULL; |
4a744367 JD |
742 | goto error; |
743 | } | |
744 | ||
745 | stream->mmap_size = new_size; | |
746 | printf_verbose("Expanding stream mmap size to %" PRIu64 " bytes\n", | |
747 | stream->mmap_size); | |
748 | } | |
749 | ||
b7e8a8e1 MD |
750 | ret_len = lttng_live_recv(ctx->control_sock, |
751 | mmap_align_addr(pos->base_mma), len); | |
f8612f31 MD |
752 | if (ret_len == 0) { |
753 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
754 | goto error; |
755 | } | |
4a744367 | 756 | if (ret_len < 0) { |
79620497 | 757 | perror("[error] Error receiving trace packet"); |
4a744367 JD |
758 | goto error; |
759 | } | |
760 | assert(ret_len == len); | |
f312b3aa | 761 | ret = 0; |
4a744367 | 762 | end: |
4a744367 | 763 | return ret; |
8ace20bf MD |
764 | |
765 | error: | |
766 | return -1; | |
4a744367 JD |
767 | } |
768 | ||
4a744367 | 769 | static |
9abca178 JD |
770 | int get_one_metadata_packet(struct lttng_live_ctx *ctx, |
771 | struct lttng_live_viewer_stream *metadata_stream) | |
4a744367 JD |
772 | { |
773 | uint64_t len = 0; | |
774 | int ret; | |
775 | struct lttng_viewer_cmd cmd; | |
776 | struct lttng_viewer_get_metadata rq; | |
777 | struct lttng_viewer_metadata_packet rp; | |
4a744367 JD |
778 | char *data = NULL; |
779 | ssize_t ret_len; | |
780 | ||
8ace20bf MD |
781 | if (lttng_live_should_quit()) { |
782 | ret = -1; | |
783 | goto end; | |
784 | } | |
785 | ||
9abca178 | 786 | rq.stream_id = htobe64(metadata_stream->id); |
4a744367 JD |
787 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); |
788 | cmd.data_size = sizeof(rq); | |
789 | cmd.cmd_version = 0; | |
790 | ||
b7e8a8e1 | 791 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 792 | if (ret_len < 0) { |
79620497 | 793 | perror("[error] Error sending cmd"); |
4a744367 JD |
794 | goto error; |
795 | } | |
796 | assert(ret_len == sizeof(cmd)); | |
797 | ||
b7e8a8e1 | 798 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 799 | if (ret_len < 0) { |
79620497 | 800 | perror("[error] Error sending get_metadata request"); |
4a744367 JD |
801 | goto error; |
802 | } | |
803 | assert(ret_len == sizeof(rq)); | |
804 | ||
b7e8a8e1 | 805 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
806 | if (ret_len == 0) { |
807 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
808 | goto error; |
809 | } | |
4a744367 | 810 | if (ret_len < 0) { |
79620497 | 811 | perror("[error] Error receiving metadata response"); |
4a744367 JD |
812 | goto error; |
813 | } | |
814 | assert(ret_len == sizeof(rp)); | |
815 | ||
816 | switch (be32toh(rp.status)) { | |
817 | case LTTNG_VIEWER_METADATA_OK: | |
818 | printf_verbose("get_metadata : OK\n"); | |
819 | break; | |
820 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
821 | printf_verbose("get_metadata : NO NEW\n"); | |
9abca178 | 822 | ret = 0; |
4a744367 JD |
823 | goto end; |
824 | case LTTNG_VIEWER_METADATA_ERR: | |
825 | printf_verbose("get_metadata : ERR\n"); | |
8ace20bf | 826 | goto error; |
4a744367 JD |
827 | default: |
828 | printf_verbose("get_metadata : UNKNOWN\n"); | |
8ace20bf | 829 | goto error; |
4a744367 JD |
830 | } |
831 | ||
832 | len = be64toh(rp.len); | |
833 | printf_verbose("Writing %" PRIu64" bytes to metadata\n", len); | |
834 | if (len <= 0) { | |
8ace20bf | 835 | goto error; |
4a744367 JD |
836 | } |
837 | ||
838 | data = zmalloc(len); | |
839 | if (!data) { | |
840 | perror("relay data zmalloc"); | |
4a744367 JD |
841 | goto error; |
842 | } | |
b7e8a8e1 | 843 | ret_len = lttng_live_recv(ctx->control_sock, data, len); |
f8612f31 MD |
844 | if (ret_len == 0) { |
845 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
8ace20bf | 846 | goto error_free_data; |
f8612f31 | 847 | } |
4a744367 | 848 | if (ret_len < 0) { |
79620497 | 849 | perror("[error] Error receiving trace packet"); |
8ace20bf | 850 | goto error_free_data; |
4a744367 JD |
851 | } |
852 | assert(ret_len == len); | |
853 | ||
854 | do { | |
af701dc4 JD |
855 | ret_len = fwrite(data, 1, len, |
856 | metadata_stream->metadata_fp_write); | |
4a744367 JD |
857 | } while (ret_len < 0 && errno == EINTR); |
858 | if (ret_len < 0) { | |
af701dc4 | 859 | fprintf(stderr, "[error] Writing in the metadata fp\n"); |
8ace20bf | 860 | goto error_free_data; |
4a744367 JD |
861 | } |
862 | assert(ret_len == len); | |
af701dc4 | 863 | metadata_stream->metadata_len += len; |
8ace20bf | 864 | free(data); |
9abca178 | 865 | ret = len; |
8ace20bf MD |
866 | end: |
867 | return ret; | |
4a744367 | 868 | |
8ace20bf | 869 | error_free_data: |
4a744367 | 870 | free(data); |
4a744367 | 871 | error: |
8ace20bf | 872 | return -1; |
4a744367 JD |
873 | } |
874 | ||
9abca178 JD |
875 | /* |
876 | * Return 0 on success, a negative value on error. | |
877 | */ | |
878 | static | |
879 | int get_new_metadata(struct lttng_live_ctx *ctx, | |
af701dc4 JD |
880 | struct lttng_live_viewer_stream *viewer_stream, |
881 | char **metadata_buf) | |
9abca178 JD |
882 | { |
883 | int ret = 0; | |
884 | struct lttng_live_viewer_stream *metadata_stream; | |
73b2b0d1 | 885 | size_t size, len_read = 0; |
9abca178 JD |
886 | |
887 | metadata_stream = viewer_stream->ctf_trace->metadata_stream; | |
50d207af JD |
888 | if (!metadata_stream) { |
889 | fprintf(stderr, "[error] No metadata stream\n"); | |
890 | ret = -1; | |
891 | goto error; | |
892 | } | |
af701dc4 JD |
893 | metadata_stream->metadata_len = 0; |
894 | ret = open_metadata_fp_write(metadata_stream, metadata_buf, &size); | |
895 | if (ret < 0) { | |
896 | goto error; | |
897 | } | |
9abca178 JD |
898 | |
899 | do { | |
900 | /* | |
901 | * get_one_metadata_packet returns the number of bytes | |
902 | * received, 0 when we have received everything, a | |
903 | * negative value on error. | |
904 | */ | |
905 | ret = get_one_metadata_packet(ctx, metadata_stream); | |
c111d5d7 MD |
906 | if (ret > 0) { |
907 | len_read += ret; | |
908 | } | |
85e2085e MD |
909 | if (!len_read) { |
910 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); | |
911 | } | |
c111d5d7 | 912 | } while (ret > 0 || !len_read); |
9abca178 | 913 | |
7def295f MD |
914 | if (fclose(metadata_stream->metadata_fp_write)) |
915 | perror("fclose"); | |
af701dc4 JD |
916 | metadata_stream->metadata_fp_write = NULL; |
917 | ||
918 | error: | |
9abca178 JD |
919 | return ret; |
920 | } | |
921 | ||
4a744367 JD |
922 | /* |
923 | * Get one index for a stream. | |
924 | * | |
925 | * Returns 0 on success or a negative value on error. | |
926 | */ | |
927 | static | |
928 | int get_next_index(struct lttng_live_ctx *ctx, | |
929 | struct lttng_live_viewer_stream *viewer_stream, | |
930 | struct packet_index *index) | |
931 | { | |
932 | struct lttng_viewer_cmd cmd; | |
933 | struct lttng_viewer_get_next_index rq; | |
934 | struct lttng_viewer_index rp; | |
935 | int ret; | |
4a744367 JD |
936 | ssize_t ret_len; |
937 | ||
938 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
939 | cmd.data_size = sizeof(rq); | |
940 | cmd.cmd_version = 0; | |
941 | ||
942 | memset(&rq, 0, sizeof(rq)); | |
943 | rq.stream_id = htobe64(viewer_stream->id); | |
944 | ||
945 | retry: | |
8ace20bf MD |
946 | if (lttng_live_should_quit()) { |
947 | ret = -1; | |
948 | goto end; | |
949 | } | |
b7e8a8e1 | 950 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 951 | if (ret_len < 0) { |
79620497 | 952 | perror("[error] Error sending cmd"); |
4a744367 JD |
953 | goto error; |
954 | } | |
955 | assert(ret_len == sizeof(cmd)); | |
956 | ||
b7e8a8e1 | 957 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 958 | if (ret_len < 0) { |
79620497 | 959 | perror("[error] Error sending get_next_index request"); |
4a744367 JD |
960 | goto error; |
961 | } | |
962 | assert(ret_len == sizeof(rq)); | |
963 | ||
b7e8a8e1 | 964 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
965 | if (ret_len == 0) { |
966 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
967 | goto error; |
968 | } | |
4a744367 | 969 | if (ret_len < 0) { |
79620497 | 970 | perror("[error] Error receiving index response"); |
4a744367 JD |
971 | goto error; |
972 | } | |
973 | assert(ret_len == sizeof(rp)); | |
974 | ||
975 | rp.flags = be32toh(rp.flags); | |
976 | ||
977 | switch (be32toh(rp.status)) { | |
978 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
979 | printf_verbose("get_next_index: inactive\n"); | |
980 | memset(index, 0, sizeof(struct packet_index)); | |
992e8cc0 | 981 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); |
4a744367 JD |
982 | break; |
983 | case LTTNG_VIEWER_INDEX_OK: | |
984 | printf_verbose("get_next_index: Ok, need metadata update : %u\n", | |
985 | rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA); | |
986 | index->offset = be64toh(rp.offset); | |
987 | index->packet_size = be64toh(rp.packet_size); | |
988 | index->content_size = be64toh(rp.content_size); | |
992e8cc0 MD |
989 | index->ts_cycles.timestamp_begin = be64toh(rp.timestamp_begin); |
990 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
4a744367 JD |
991 | index->events_discarded = be64toh(rp.events_discarded); |
992 | ||
993 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
50d207af JD |
994 | ret = append_metadata(ctx, viewer_stream); |
995 | if (ret) | |
4a744367 | 996 | goto error; |
4a744367 | 997 | } |
2acdc547 | 998 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { |
73b2b0d1 | 999 | printf_verbose("get_next_index: need new streams\n"); |
2acdc547 JD |
1000 | ret = ask_new_streams(ctx); |
1001 | if (ret < 0) | |
1002 | goto error; | |
73b2b0d1 JD |
1003 | else if (ret > 0) |
1004 | g_hash_table_foreach(ctx->session->ctf_traces, | |
1005 | add_traces, ctx->bt_ctx); | |
2acdc547 | 1006 | } |
4a744367 JD |
1007 | break; |
1008 | case LTTNG_VIEWER_INDEX_RETRY: | |
1009 | printf_verbose("get_next_index: retry\n"); | |
85e2085e | 1010 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); |
4a744367 JD |
1011 | goto retry; |
1012 | case LTTNG_VIEWER_INDEX_HUP: | |
1013 | printf_verbose("get_next_index: stream hung up\n"); | |
1014 | viewer_stream->id = -1ULL; | |
4a744367 | 1015 | index->offset = EOF; |
2acdc547 | 1016 | ctx->session->stream_count--; |
4a744367 JD |
1017 | break; |
1018 | case LTTNG_VIEWER_INDEX_ERR: | |
1019 | fprintf(stderr, "[error] get_next_index: error\n"); | |
4a744367 JD |
1020 | goto error; |
1021 | default: | |
1022 | fprintf(stderr, "[error] get_next_index: unkwown value\n"); | |
4a744367 JD |
1023 | goto error; |
1024 | } | |
4a744367 | 1025 | ret = 0; |
8ace20bf MD |
1026 | end: |
1027 | return ret; | |
4a744367 JD |
1028 | |
1029 | error: | |
8ace20bf | 1030 | return -1; |
4a744367 JD |
1031 | } |
1032 | ||
b5a1fa45 | 1033 | static |
4a744367 JD |
1034 | void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, size_t index, |
1035 | int whence) | |
1036 | { | |
1037 | struct ctf_stream_pos *pos; | |
1038 | struct ctf_file_stream *file_stream; | |
f1f52630 | 1039 | struct packet_index *prev_index = NULL, *cur_index; |
4a744367 JD |
1040 | struct lttng_live_viewer_stream *viewer_stream; |
1041 | struct lttng_live_session *session; | |
1042 | int ret; | |
1043 | ||
1044 | retry: | |
1045 | pos = ctf_pos(stream_pos); | |
1046 | file_stream = container_of(pos, struct ctf_file_stream, pos); | |
1047 | viewer_stream = (struct lttng_live_viewer_stream *) pos->priv; | |
1048 | session = viewer_stream->session; | |
1049 | ||
f1f52630 MD |
1050 | switch (pos->packet_index->len) { |
1051 | case 0: | |
1052 | g_array_set_size(pos->packet_index, 1); | |
1053 | cur_index = &g_array_index(pos->packet_index, | |
1054 | struct packet_index, 0); | |
1055 | break; | |
1056 | case 1: | |
1057 | g_array_set_size(pos->packet_index, 2); | |
1058 | prev_index = &g_array_index(pos->packet_index, | |
1059 | struct packet_index, 0); | |
1060 | cur_index = &g_array_index(pos->packet_index, | |
1061 | struct packet_index, 1); | |
1062 | break; | |
1063 | case 2: | |
1064 | g_array_index(pos->packet_index, | |
1065 | struct packet_index, 0) = | |
1066 | g_array_index(pos->packet_index, | |
1067 | struct packet_index, 1); | |
1068 | prev_index = &g_array_index(pos->packet_index, | |
1069 | struct packet_index, 0); | |
1070 | cur_index = &g_array_index(pos->packet_index, | |
1071 | struct packet_index, 1); | |
1072 | break; | |
1073 | default: | |
1074 | abort(); | |
1075 | break; | |
1076 | } | |
4a744367 | 1077 | printf_verbose("get_next_index for stream %" PRIu64 "\n", viewer_stream->id); |
f1f52630 | 1078 | ret = get_next_index(session->ctx, viewer_stream, cur_index); |
4a744367 JD |
1079 | if (ret < 0) { |
1080 | pos->offset = EOF; | |
e29395a8 JG |
1081 | if (!lttng_live_should_quit()) { |
1082 | fprintf(stderr, "[error] get_next_index failed\n"); | |
1083 | } | |
4a744367 JD |
1084 | return; |
1085 | } | |
1086 | ||
f1f52630 MD |
1087 | pos->packet_size = cur_index->packet_size; |
1088 | pos->content_size = cur_index->content_size; | |
4a744367 | 1089 | pos->mmap_base_offset = 0; |
f1f52630 | 1090 | if (cur_index->offset == EOF) { |
4a744367 JD |
1091 | pos->offset = EOF; |
1092 | } else { | |
1093 | pos->offset = 0; | |
1094 | } | |
1095 | ||
f1f52630 MD |
1096 | if (cur_index->content_size == 0) { |
1097 | file_stream->parent.cycles_timestamp = | |
1098 | cur_index->ts_cycles.timestamp_end; | |
4a744367 | 1099 | file_stream->parent.real_timestamp = ctf_get_real_timestamp( |
f1f52630 MD |
1100 | &file_stream->parent, |
1101 | cur_index->ts_cycles.timestamp_end); | |
4a744367 | 1102 | } else { |
f1f52630 MD |
1103 | /* Convert the timestamps and append to the real_index. */ |
1104 | cur_index->ts_real.timestamp_begin = ctf_get_real_timestamp( | |
1105 | &file_stream->parent, | |
1106 | cur_index->ts_cycles.timestamp_begin); | |
1107 | cur_index->ts_real.timestamp_end = ctf_get_real_timestamp( | |
1108 | &file_stream->parent, | |
1109 | cur_index->ts_cycles.timestamp_end); | |
1110 | ||
1111 | ctf_update_current_packet_index(&file_stream->parent, | |
1112 | prev_index, cur_index); | |
1113 | ||
1114 | file_stream->parent.cycles_timestamp = | |
1115 | cur_index->ts_cycles.timestamp_begin; | |
1116 | file_stream->parent.real_timestamp = | |
1117 | cur_index->ts_real.timestamp_begin; | |
4a744367 JD |
1118 | } |
1119 | ||
1120 | if (pos->packet_size == 0 || pos->offset == EOF) { | |
1121 | goto end; | |
1122 | } | |
1123 | ||
1124 | printf_verbose("get_data_packet for stream %" PRIu64 "\n", | |
1125 | viewer_stream->id); | |
1126 | ret = get_data_packet(session->ctx, pos, viewer_stream, | |
c1e8ac81 | 1127 | cur_index->offset, |
f1f52630 | 1128 | cur_index->packet_size / CHAR_BIT); |
4a744367 JD |
1129 | if (ret == -2) { |
1130 | goto retry; | |
1131 | } else if (ret < 0) { | |
1132 | pos->offset = EOF; | |
e29395a8 JG |
1133 | if (!lttng_live_should_quit()) { |
1134 | fprintf(stderr, "[error] get_data_packet failed\n"); | |
1135 | } | |
4a744367 JD |
1136 | return; |
1137 | } | |
1138 | ||
1139 | printf_verbose("Index received : packet_size : %" PRIu64 | |
1140 | ", offset %" PRIu64 ", content_size %" PRIu64 | |
1141 | ", timestamp_end : %" PRIu64 "\n", | |
f1f52630 MD |
1142 | cur_index->packet_size, cur_index->offset, |
1143 | cur_index->content_size, | |
1144 | cur_index->ts_cycles.timestamp_end); | |
4a744367 JD |
1145 | |
1146 | /* update trace_packet_header and stream_packet_context */ | |
1147 | if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) { | |
1148 | /* Read packet header */ | |
1149 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); | |
1150 | if (ret) { | |
1151 | pos->offset = EOF; | |
1152 | fprintf(stderr, "[error] trace packet header read failed\n"); | |
1153 | goto end; | |
1154 | } | |
1155 | } | |
1156 | if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) { | |
1157 | /* Read packet context */ | |
1158 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); | |
1159 | if (ret) { | |
1160 | pos->offset = EOF; | |
1161 | fprintf(stderr, "[error] stream packet context read failed\n"); | |
1162 | goto end; | |
1163 | } | |
1164 | } | |
1165 | pos->data_offset = pos->offset; | |
1166 | ||
1167 | end: | |
1168 | return; | |
1169 | } | |
1170 | ||
2acdc547 JD |
1171 | int lttng_live_create_viewer_session(struct lttng_live_ctx *ctx) |
1172 | { | |
1173 | struct lttng_viewer_cmd cmd; | |
1174 | struct lttng_viewer_create_session_response resp; | |
1175 | int ret; | |
1176 | ssize_t ret_len; | |
1177 | ||
8ace20bf MD |
1178 | if (lttng_live_should_quit()) { |
1179 | ret = -1; | |
1180 | goto end; | |
1181 | } | |
1182 | ||
2acdc547 JD |
1183 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); |
1184 | cmd.data_size = 0; | |
1185 | cmd.cmd_version = 0; | |
1186 | ||
b7e8a8e1 | 1187 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
2acdc547 | 1188 | if (ret_len < 0) { |
79620497 | 1189 | perror("[error] Error sending cmd"); |
2acdc547 JD |
1190 | goto error; |
1191 | } | |
1192 | assert(ret_len == sizeof(cmd)); | |
1193 | ||
b7e8a8e1 | 1194 | ret_len = lttng_live_recv(ctx->control_sock, &resp, sizeof(resp)); |
f8612f31 MD |
1195 | if (ret_len == 0) { |
1196 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1197 | goto error; |
1198 | } | |
2acdc547 | 1199 | if (ret_len < 0) { |
79620497 | 1200 | perror("[error] Error receiving create session reply"); |
2acdc547 JD |
1201 | goto error; |
1202 | } | |
1203 | assert(ret_len == sizeof(resp)); | |
1204 | ||
1205 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
1206 | fprintf(stderr, "[error] Error creating viewer session\n"); | |
2acdc547 JD |
1207 | goto error; |
1208 | } | |
1209 | ret = 0; | |
8ace20bf MD |
1210 | end: |
1211 | return ret; | |
2acdc547 JD |
1212 | |
1213 | error: | |
8ace20bf | 1214 | return -1; |
2acdc547 JD |
1215 | } |
1216 | ||
1217 | static | |
1218 | int del_traces(gpointer key, gpointer value, gpointer user_data) | |
4a744367 JD |
1219 | { |
1220 | struct bt_context *bt_ctx = user_data; | |
1221 | struct lttng_live_ctf_trace *trace = value; | |
1222 | int ret; | |
1223 | ||
1224 | ret = bt_context_remove_trace(bt_ctx, trace->trace_id); | |
1225 | if (ret < 0) | |
1226 | fprintf(stderr, "[error] removing trace from context\n"); | |
1227 | ||
1228 | /* remove the key/value pair from the HT. */ | |
1229 | return 1; | |
1230 | } | |
1231 | ||
2acdc547 JD |
1232 | static |
1233 | void add_traces(gpointer key, gpointer value, gpointer user_data) | |
4a744367 | 1234 | { |
9abca178 | 1235 | int i, ret; |
4a744367 JD |
1236 | struct bt_context *bt_ctx = user_data; |
1237 | struct lttng_live_ctf_trace *trace = value; | |
1238 | struct lttng_live_viewer_stream *stream; | |
1239 | struct bt_mmap_stream *new_mmap_stream; | |
1240 | struct bt_mmap_stream_list mmap_list; | |
1241 | struct lttng_live_ctx *ctx = NULL; | |
150595c4 JD |
1242 | struct bt_trace_descriptor *td; |
1243 | struct bt_trace_handle *handle; | |
4a744367 | 1244 | |
b5a1fa45 JD |
1245 | /* |
1246 | * We don't know how many streams we will receive for a trace, so | |
1247 | * once we are done receiving the traces, we add all the traces | |
1248 | * received to the bt_context. | |
1249 | * We can receive streams during the attach command or the | |
1250 | * get_new_streams, so we have to make sure not to add multiple | |
1251 | * times the same traces. | |
1252 | * If a trace is already in the context, we just skip this function. | |
1253 | */ | |
2acdc547 JD |
1254 | if (trace->in_use) |
1255 | return; | |
1256 | ||
4a744367 JD |
1257 | BT_INIT_LIST_HEAD(&mmap_list.head); |
1258 | ||
1259 | for (i = 0; i < trace->streams->len; i++) { | |
1260 | stream = g_ptr_array_index(trace->streams, i); | |
1261 | ctx = stream->session->ctx; | |
1262 | ||
1263 | if (!stream->metadata_flag) { | |
1264 | new_mmap_stream = zmalloc(sizeof(struct bt_mmap_stream)); | |
1265 | new_mmap_stream->priv = (void *) stream; | |
1266 | new_mmap_stream->fd = -1; | |
1267 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); | |
1268 | } else { | |
af701dc4 JD |
1269 | char *metadata_buf = NULL; |
1270 | ||
4a744367 | 1271 | /* Get all possible metadata before starting */ |
af701dc4 JD |
1272 | ret = get_new_metadata(ctx, stream, &metadata_buf); |
1273 | if (ret) { | |
1274 | free(metadata_buf); | |
1275 | goto end_free; | |
1276 | } | |
1277 | if (!stream->metadata_len) { | |
1278 | fprintf(stderr, "[error] empty metadata\n"); | |
1279 | ret = -1; | |
1280 | free(metadata_buf); | |
1281 | goto end_free; | |
1282 | } | |
1283 | ||
1284 | trace->metadata_fp = babeltrace_fmemopen(metadata_buf, | |
1285 | stream->metadata_len, "rb"); | |
1286 | if (!trace->metadata_fp) { | |
1287 | perror("Metadata fmemopen"); | |
1288 | ret = -1; | |
1289 | free(metadata_buf); | |
9abca178 | 1290 | goto end_free; |
af701dc4 | 1291 | } |
4a744367 JD |
1292 | } |
1293 | } | |
1294 | ||
1295 | if (!trace->metadata_fp) { | |
1296 | fprintf(stderr, "[error] No metadata stream opened\n"); | |
1297 | goto end_free; | |
1298 | } | |
1299 | ||
1300 | ret = bt_context_add_trace(bt_ctx, NULL, "ctf", | |
1301 | ctf_live_packet_seek, &mmap_list, trace->metadata_fp); | |
1302 | if (ret < 0) { | |
1303 | fprintf(stderr, "[error] Error adding trace\n"); | |
1304 | goto end_free; | |
1305 | } | |
af701dc4 JD |
1306 | trace->metadata_stream->metadata_len = 0; |
1307 | ||
150595c4 JD |
1308 | handle = (struct bt_trace_handle *) g_hash_table_lookup( |
1309 | bt_ctx->trace_handles, | |
1310 | (gpointer) (unsigned long) ret); | |
1311 | td = handle->td; | |
1312 | trace->handle = handle; | |
2acdc547 | 1313 | if (bt_ctx->current_iterator) { |
2acdc547 JD |
1314 | bt_iter_add_trace(bt_ctx->current_iterator, td); |
1315 | } | |
1316 | ||
4a744367 | 1317 | trace->trace_id = ret; |
2acdc547 | 1318 | trace->in_use = 1; |
4a744367 JD |
1319 | |
1320 | goto end; | |
1321 | ||
1322 | end_free: | |
1323 | bt_context_put(bt_ctx); | |
1324 | end: | |
1325 | return; | |
1326 | } | |
1327 | ||
73b2b0d1 JD |
1328 | /* |
1329 | * Request new streams for a session. | |
1330 | * Returns the number of streams received or a negative value on error. | |
1331 | */ | |
2acdc547 | 1332 | int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id) |
6192b988 JD |
1333 | { |
1334 | struct lttng_viewer_cmd cmd; | |
2acdc547 JD |
1335 | struct lttng_viewer_new_streams_request rq; |
1336 | struct lttng_viewer_new_streams_response rp; | |
1337 | struct lttng_viewer_stream stream; | |
73b2b0d1 | 1338 | int ret, i, nb_streams = 0; |
6192b988 | 1339 | ssize_t ret_len; |
b5a1fa45 | 1340 | uint32_t stream_count; |
6192b988 | 1341 | |
8ace20bf MD |
1342 | if (lttng_live_should_quit()) { |
1343 | ret = -1; | |
1344 | goto end; | |
1345 | } | |
1346 | ||
2acdc547 JD |
1347 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); |
1348 | cmd.data_size = sizeof(rq); | |
6192b988 JD |
1349 | cmd.cmd_version = 0; |
1350 | ||
2acdc547 JD |
1351 | memset(&rq, 0, sizeof(rq)); |
1352 | rq.session_id = htobe64(id); | |
1353 | ||
b7e8a8e1 | 1354 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
6192b988 | 1355 | if (ret_len < 0) { |
79620497 | 1356 | perror("[error] Error sending cmd"); |
6192b988 JD |
1357 | goto error; |
1358 | } | |
1359 | assert(ret_len == sizeof(cmd)); | |
1360 | ||
b7e8a8e1 | 1361 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
6192b988 | 1362 | if (ret_len < 0) { |
79620497 | 1363 | perror("[error] Error sending get_new_streams request"); |
6192b988 JD |
1364 | goto error; |
1365 | } | |
2acdc547 | 1366 | assert(ret_len == sizeof(rq)); |
6192b988 | 1367 | |
b7e8a8e1 | 1368 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
1369 | if (ret_len == 0) { |
1370 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1371 | goto error; |
1372 | } | |
2acdc547 | 1373 | if (ret_len < 0) { |
79620497 | 1374 | perror("[error] Error receiving get_new_streams response"); |
6192b988 JD |
1375 | goto error; |
1376 | } | |
2acdc547 JD |
1377 | assert(ret_len == sizeof(rp)); |
1378 | ||
1379 | switch(be32toh(rp.status)) { | |
1380 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1381 | break; | |
1382 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1383 | ret = 0; | |
1384 | goto end; | |
1385 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1386 | ret = -LTTNG_VIEWER_NEW_STREAMS_HUP; | |
1387 | goto end; | |
1388 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
1389 | fprintf(stderr, "[error] get_new_streams error\n"); | |
8ace20bf | 1390 | goto error; |
2acdc547 JD |
1391 | default: |
1392 | fprintf(stderr, "[error] Unknown return code %u\n", | |
1393 | be32toh(rp.status)); | |
8ace20bf | 1394 | goto error; |
2acdc547 JD |
1395 | } |
1396 | ||
b5a1fa45 JD |
1397 | stream_count = be32toh(rp.streams_count); |
1398 | ctx->session->stream_count += stream_count; | |
2acdc547 JD |
1399 | /* |
1400 | * When the session is created but not started, we do an active wait | |
1401 | * until it starts. It allows the viewer to start processing the trace | |
1402 | * as soon as the session starts. | |
1403 | */ | |
1404 | if (ctx->session->stream_count == 0) { | |
1405 | ret = 0; | |
1406 | goto end; | |
1407 | } | |
1408 | printf_verbose("Waiting for %" PRIu64 " streams:\n", | |
1409 | ctx->session->stream_count); | |
1410 | ctx->session->streams = g_new0(struct lttng_live_viewer_stream, | |
1411 | ctx->session->stream_count); | |
b5a1fa45 | 1412 | for (i = 0; i < stream_count; i++) { |
b7e8a8e1 | 1413 | ret_len = lttng_live_recv(ctx->control_sock, &stream, sizeof(stream)); |
f8612f31 MD |
1414 | if (ret_len == 0) { |
1415 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1416 | goto error; |
1417 | } | |
2acdc547 | 1418 | if (ret_len < 0) { |
79620497 | 1419 | perror("[error] Error receiving stream"); |
2acdc547 JD |
1420 | goto error; |
1421 | } | |
1422 | assert(ret_len == sizeof(stream)); | |
1423 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
1424 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
1425 | ||
1426 | printf_verbose(" stream %" PRIu64 " : %s/%s\n", | |
1427 | be64toh(stream.id), stream.path_name, | |
1428 | stream.channel_name); | |
1429 | ctx->session->streams[i].id = be64toh(stream.id); | |
1430 | ctx->session->streams[i].session = ctx->session; | |
1431 | ||
1432 | ctx->session->streams[i].first_read = 1; | |
1433 | ctx->session->streams[i].mmap_size = 0; | |
1434 | ||
1435 | if (be32toh(stream.metadata_flag)) { | |
2acdc547 | 1436 | ctx->session->streams[i].metadata_flag = 1; |
2acdc547 JD |
1437 | } |
1438 | ret = lttng_live_ctf_trace_assign(&ctx->session->streams[i], | |
1439 | be64toh(stream.ctf_trace_id)); | |
1440 | if (ret < 0) { | |
1441 | goto error; | |
1442 | } | |
73b2b0d1 | 1443 | nb_streams++; |
2acdc547 JD |
1444 | |
1445 | } | |
73b2b0d1 | 1446 | ret = nb_streams; |
2acdc547 | 1447 | end: |
6192b988 | 1448 | return ret; |
8ace20bf MD |
1449 | |
1450 | error: | |
1451 | return -1; | |
6192b988 JD |
1452 | } |
1453 | ||
28756729 | 1454 | int lttng_live_read(struct lttng_live_ctx *ctx) |
4a744367 | 1455 | { |
28756729 JG |
1456 | int ret = -1; |
1457 | int i; | |
4a744367 JD |
1458 | struct bt_ctf_iter *iter; |
1459 | const struct bt_ctf_event *event; | |
1460 | struct bt_iter_pos begin_pos; | |
1461 | struct bt_trace_descriptor *td_write; | |
1462 | struct bt_format *fmt_write; | |
1463 | struct ctf_text_stream_pos *sout; | |
2acdc547 | 1464 | uint64_t id; |
4a744367 | 1465 | |
2acdc547 JD |
1466 | ctx->bt_ctx = bt_context_create(); |
1467 | if (!ctx->bt_ctx) { | |
4a744367 JD |
1468 | fprintf(stderr, "[error] bt_context_create allocation\n"); |
1469 | goto end; | |
1470 | } | |
1471 | ||
1472 | fmt_write = bt_lookup_format(g_quark_from_static_string("text")); | |
1473 | if (!fmt_write) { | |
1474 | fprintf(stderr, "[error] ctf-text error\n"); | |
1475 | goto end; | |
1476 | } | |
1477 | ||
1478 | td_write = fmt_write->open_trace(NULL, O_RDWR, NULL, NULL); | |
1479 | if (!td_write) { | |
1480 | fprintf(stderr, "[error] Error opening output trace\n"); | |
1481 | goto end_free; | |
1482 | } | |
1483 | ||
1484 | sout = container_of(td_write, struct ctf_text_stream_pos, | |
1485 | trace_descriptor); | |
85bb4663 | 1486 | if (!sout->parent.event_cb) { |
4a744367 | 1487 | goto end_free; |
85bb4663 | 1488 | } |
4a744367 | 1489 | |
6192b988 JD |
1490 | ret = lttng_live_create_viewer_session(ctx); |
1491 | if (ret < 0) { | |
1492 | goto end_free; | |
1493 | } | |
1494 | ||
2acdc547 JD |
1495 | for (i = 0; i < ctx->session_ids->len; i++) { |
1496 | id = g_array_index(ctx->session_ids, uint64_t, i); | |
1497 | printf_verbose("Attaching to session %lu\n", id); | |
1498 | ret = lttng_live_attach_session(ctx, id); | |
1499 | printf_verbose("Attaching session returns %d\n", ret); | |
1500 | if (ret < 0) { | |
1501 | if (ret == -LTTNG_VIEWER_ATTACH_UNK) { | |
1502 | fprintf(stderr, "[error] Unknown session ID\n"); | |
1503 | } | |
1504 | goto end_free; | |
1505 | } | |
1506 | } | |
1507 | ||
4a744367 | 1508 | /* |
2acdc547 | 1509 | * As long as the session is active, we try to get new streams. |
4a744367 | 1510 | */ |
2acdc547 | 1511 | for (;;) { |
4a744367 JD |
1512 | int flags; |
1513 | ||
8ace20bf | 1514 | if (lttng_live_should_quit()) { |
28756729 | 1515 | ret = 0; |
8ace20bf MD |
1516 | goto end_free; |
1517 | } | |
1518 | ||
2acdc547 | 1519 | while (!ctx->session->stream_count) { |
8ace20bf MD |
1520 | if (lttng_live_should_quit() |
1521 | || ctx->session_ids->len == 0) { | |
28756729 | 1522 | ret = 0; |
4a744367 | 1523 | goto end_free; |
85bb4663 | 1524 | } |
2acdc547 | 1525 | ret = ask_new_streams(ctx); |
85bb4663 | 1526 | if (ret < 0) { |
2acdc547 | 1527 | goto end_free; |
85bb4663 MD |
1528 | } |
1529 | if (!ctx->session->stream_count) { | |
85e2085e | 1530 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); |
85bb4663 | 1531 | } |
2acdc547 | 1532 | } |
4a744367 | 1533 | |
2acdc547 JD |
1534 | g_hash_table_foreach(ctx->session->ctf_traces, add_traces, |
1535 | ctx->bt_ctx); | |
4a744367 JD |
1536 | |
1537 | begin_pos.type = BT_SEEK_BEGIN; | |
2acdc547 | 1538 | iter = bt_ctf_iter_create(ctx->bt_ctx, &begin_pos, NULL); |
4a744367 | 1539 | if (!iter) { |
e29395a8 JG |
1540 | if (lttng_live_should_quit()) { |
1541 | ret = 0; | |
1542 | goto end; | |
1543 | } | |
4a744367 JD |
1544 | fprintf(stderr, "[error] Iterator creation error\n"); |
1545 | goto end; | |
1546 | } | |
1547 | for (;;) { | |
8ace20bf | 1548 | if (lttng_live_should_quit()) { |
28756729 | 1549 | ret = 0; |
8ace20bf MD |
1550 | goto end_free; |
1551 | } | |
4a744367 JD |
1552 | event = bt_ctf_iter_read_event_flags(iter, &flags); |
1553 | if (!(flags & BT_ITER_FLAG_RETRY)) { | |
1554 | if (!event) { | |
1555 | /* End of trace */ | |
1556 | break; | |
1557 | } | |
1558 | ret = sout->parent.event_cb(&sout->parent, | |
1559 | event->parent->stream); | |
1560 | if (ret) { | |
1561 | fprintf(stderr, "[error] Writing " | |
1562 | "event failed.\n"); | |
1563 | goto end_free; | |
1564 | } | |
1565 | } | |
1566 | ret = bt_iter_next(bt_ctf_get_iter(iter)); | |
1567 | if (ret < 0) { | |
1568 | goto end_free; | |
1569 | } | |
1570 | } | |
1571 | bt_ctf_iter_destroy(iter); | |
2acdc547 JD |
1572 | g_hash_table_foreach_remove(ctx->session->ctf_traces, |
1573 | del_traces, ctx->bt_ctx); | |
1574 | ctx->session->stream_count = 0; | |
1575 | } | |
4a744367 JD |
1576 | |
1577 | end_free: | |
2acdc547 | 1578 | bt_context_put(ctx->bt_ctx); |
4a744367 | 1579 | end: |
e29395a8 JG |
1580 | if (lttng_live_should_quit()) { |
1581 | ret = 0; | |
1582 | } | |
28756729 | 1583 | return ret; |
4a744367 | 1584 | } |