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 | ||
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 | ||
43273943 JD |
535 | /* |
536 | * Ask the relay for new streams. | |
537 | * | |
538 | * Returns the number of new streams received or a negative value on error. | |
539 | */ | |
2acdc547 JD |
540 | static |
541 | int ask_new_streams(struct lttng_live_ctx *ctx) | |
542 | { | |
43273943 | 543 | int i, ret = 0, nb_streams = 0; |
2acdc547 JD |
544 | uint64_t id; |
545 | ||
546 | restart: | |
547 | for (i = 0; i < ctx->session_ids->len; i++) { | |
548 | id = g_array_index(ctx->session_ids, uint64_t, i); | |
549 | ret = lttng_live_get_new_streams(ctx, id); | |
43273943 | 550 | printf_verbose("Asking for new streams returns %d\n", ret); |
2acdc547 | 551 | if (ret < 0) { |
f28fb4b6 JG |
552 | if (lttng_live_should_quit()) { |
553 | goto end; | |
554 | } | |
2acdc547 JD |
555 | if (ret == -LTTNG_VIEWER_NEW_STREAMS_HUP) { |
556 | printf_verbose("Session %" PRIu64 " closed\n", | |
557 | id); | |
b5a1fa45 JD |
558 | /* |
559 | * The streams have already been closed during | |
560 | * the reading, so we only need to get rid of | |
561 | * the trace in our internal table of sessions. | |
562 | */ | |
2acdc547 JD |
563 | g_array_remove_index(ctx->session_ids, i); |
564 | /* | |
565 | * We can't continue iterating on the g_array | |
566 | * after a remove, we have to start again. | |
567 | */ | |
568 | goto restart; | |
569 | } else { | |
570 | ret = -1; | |
571 | goto end; | |
572 | } | |
43273943 JD |
573 | } else { |
574 | nb_streams += ret; | |
2acdc547 JD |
575 | } |
576 | } | |
43273943 | 577 | ret = nb_streams; |
2acdc547 JD |
578 | |
579 | end: | |
580 | return ret; | |
581 | } | |
582 | ||
50d207af JD |
583 | static |
584 | int append_metadata(struct lttng_live_ctx *ctx, | |
585 | struct lttng_live_viewer_stream *viewer_stream) | |
586 | { | |
587 | int ret; | |
588 | struct lttng_live_viewer_stream *metadata; | |
589 | char *metadata_buf = NULL; | |
590 | ||
591 | printf_verbose("get_next_index: new metadata needed\n"); | |
592 | ret = get_new_metadata(ctx, viewer_stream, &metadata_buf); | |
593 | if (ret < 0) { | |
594 | free(metadata_buf); | |
595 | goto error; | |
596 | } | |
597 | ||
598 | metadata = viewer_stream->ctf_trace->metadata_stream; | |
599 | metadata->ctf_trace->metadata_fp = | |
600 | babeltrace_fmemopen(metadata_buf, | |
601 | metadata->metadata_len, "rb"); | |
602 | if (!metadata->ctf_trace->metadata_fp) { | |
603 | perror("Metadata fmemopen"); | |
604 | free(metadata_buf); | |
605 | ret = -1; | |
606 | goto error; | |
607 | } | |
608 | ret = ctf_append_trace_metadata( | |
609 | viewer_stream->ctf_trace->handle->td, | |
610 | metadata->ctf_trace->metadata_fp); | |
251fc08c MD |
611 | /* We accept empty metadata packets */ |
612 | if (ret != 0 && ret != -ENOENT) { | |
50d207af JD |
613 | fprintf(stderr, "[error] Appending metadata\n"); |
614 | goto error; | |
615 | } | |
251fc08c | 616 | ret = 0; |
50d207af JD |
617 | |
618 | error: | |
619 | return ret; | |
620 | } | |
621 | ||
4a744367 JD |
622 | static |
623 | int get_data_packet(struct lttng_live_ctx *ctx, | |
624 | struct ctf_stream_pos *pos, | |
625 | struct lttng_live_viewer_stream *stream, uint64_t offset, | |
626 | uint64_t len) | |
627 | { | |
628 | struct lttng_viewer_cmd cmd; | |
629 | struct lttng_viewer_get_packet rq; | |
630 | struct lttng_viewer_trace_packet rp; | |
631 | ssize_t ret_len; | |
632 | int ret; | |
633 | ||
50d207af | 634 | retry: |
8ace20bf MD |
635 | if (lttng_live_should_quit()) { |
636 | ret = -1; | |
637 | goto end; | |
638 | } | |
4a744367 JD |
639 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); |
640 | cmd.data_size = sizeof(rq); | |
641 | cmd.cmd_version = 0; | |
642 | ||
643 | memset(&rq, 0, sizeof(rq)); | |
644 | rq.stream_id = htobe64(stream->id); | |
c1e8ac81 | 645 | rq.offset = htobe64(offset); |
4a744367 JD |
646 | rq.len = htobe32(len); |
647 | ||
b7e8a8e1 | 648 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 649 | if (ret_len < 0) { |
79620497 | 650 | perror("[error] Error sending cmd"); |
4a744367 JD |
651 | goto error; |
652 | } | |
653 | assert(ret_len == sizeof(cmd)); | |
654 | ||
b7e8a8e1 | 655 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 656 | if (ret_len < 0) { |
79620497 | 657 | perror("[error] Error sending get_data_packet request"); |
4a744367 JD |
658 | goto error; |
659 | } | |
660 | assert(ret_len == sizeof(rq)); | |
661 | ||
b7e8a8e1 | 662 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
663 | if (ret_len == 0) { |
664 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
665 | goto error; |
666 | } | |
4a744367 | 667 | if (ret_len < 0) { |
79620497 | 668 | perror("[error] Error receiving data response"); |
4a744367 JD |
669 | goto error; |
670 | } | |
57b9d843 JD |
671 | if (ret_len != sizeof(rp)) { |
672 | fprintf(stderr, "[error] get_data_packet: expected %" PRId64 | |
a5e4b11e MD |
673 | ", received %" PRId64 "\n", sizeof(rp), |
674 | ret_len); | |
57b9d843 JD |
675 | goto error; |
676 | } | |
4a744367 JD |
677 | |
678 | rp.flags = be32toh(rp.flags); | |
679 | ||
680 | switch (be32toh(rp.status)) { | |
681 | case LTTNG_VIEWER_GET_PACKET_OK: | |
682 | len = be32toh(rp.len); | |
683 | printf_verbose("get_data_packet: Ok, packet size : %" PRIu64 | |
684 | "\n", len); | |
685 | break; | |
686 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
8ace20bf | 687 | /* Unimplemented by relay daemon */ |
4a744367 | 688 | printf_verbose("get_data_packet: retry\n"); |
8ace20bf | 689 | goto error; |
4a744367 JD |
690 | case LTTNG_VIEWER_GET_PACKET_ERR: |
691 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
692 | printf_verbose("get_data_packet: new metadata needed\n"); | |
50d207af JD |
693 | ret = append_metadata(ctx, stream); |
694 | if (ret) | |
695 | goto error; | |
4a744367 | 696 | } |
2acdc547 | 697 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { |
f312b3aa | 698 | printf_verbose("get_data_packet: new streams needed\n"); |
2acdc547 JD |
699 | ret = ask_new_streams(ctx); |
700 | if (ret < 0) | |
701 | goto error; | |
43273943 JD |
702 | else if (ret > 0) |
703 | g_hash_table_foreach(ctx->session->ctf_traces, | |
704 | add_traces, ctx->bt_ctx); | |
2acdc547 | 705 | } |
f312b3aa MD |
706 | if (rp.flags & (LTTNG_VIEWER_FLAG_NEW_METADATA |
707 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
708 | goto retry; | |
709 | } | |
4a744367 | 710 | fprintf(stderr, "[error] get_data_packet: error\n"); |
8ace20bf | 711 | goto error; |
4a744367 JD |
712 | case LTTNG_VIEWER_GET_PACKET_EOF: |
713 | ret = -2; | |
8ace20bf | 714 | goto end; |
4a744367 JD |
715 | default: |
716 | printf_verbose("get_data_packet: unknown\n"); | |
8ace20bf | 717 | goto error; |
4a744367 JD |
718 | } |
719 | ||
65ae9a82 | 720 | if (len == 0) { |
96943040 | 721 | goto error; |
4a744367 JD |
722 | } |
723 | ||
724 | if (len > stream->mmap_size) { | |
725 | uint64_t new_size; | |
726 | ||
727 | new_size = max_t(uint64_t, len, stream->mmap_size << 1); | |
728 | if (pos->base_mma) { | |
729 | /* unmap old base */ | |
730 | ret = munmap_align(pos->base_mma); | |
731 | if (ret) { | |
79620497 | 732 | perror("[error] Unable to unmap old base"); |
4a744367 JD |
733 | goto error; |
734 | } | |
735 | pos->base_mma = NULL; | |
736 | } | |
737 | pos->base_mma = mmap_align(new_size, | |
738 | PROT_READ | PROT_WRITE, | |
739 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
740 | if (pos->base_mma == MAP_FAILED) { | |
79620497 | 741 | perror("[error] mmap error"); |
4a744367 | 742 | pos->base_mma = NULL; |
4a744367 JD |
743 | goto error; |
744 | } | |
745 | ||
746 | stream->mmap_size = new_size; | |
747 | printf_verbose("Expanding stream mmap size to %" PRIu64 " bytes\n", | |
748 | stream->mmap_size); | |
749 | } | |
750 | ||
b7e8a8e1 MD |
751 | ret_len = lttng_live_recv(ctx->control_sock, |
752 | mmap_align_addr(pos->base_mma), len); | |
f8612f31 MD |
753 | if (ret_len == 0) { |
754 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
755 | goto error; |
756 | } | |
4a744367 | 757 | if (ret_len < 0) { |
79620497 | 758 | perror("[error] Error receiving trace packet"); |
4a744367 JD |
759 | goto error; |
760 | } | |
761 | assert(ret_len == len); | |
f312b3aa | 762 | ret = 0; |
4a744367 | 763 | end: |
4a744367 | 764 | return ret; |
8ace20bf MD |
765 | |
766 | error: | |
767 | return -1; | |
4a744367 JD |
768 | } |
769 | ||
4a744367 | 770 | static |
9abca178 JD |
771 | int get_one_metadata_packet(struct lttng_live_ctx *ctx, |
772 | struct lttng_live_viewer_stream *metadata_stream) | |
4a744367 JD |
773 | { |
774 | uint64_t len = 0; | |
775 | int ret; | |
776 | struct lttng_viewer_cmd cmd; | |
777 | struct lttng_viewer_get_metadata rq; | |
778 | struct lttng_viewer_metadata_packet rp; | |
4a744367 JD |
779 | char *data = NULL; |
780 | ssize_t ret_len; | |
781 | ||
8ace20bf MD |
782 | if (lttng_live_should_quit()) { |
783 | ret = -1; | |
784 | goto end; | |
785 | } | |
786 | ||
9abca178 | 787 | rq.stream_id = htobe64(metadata_stream->id); |
4a744367 JD |
788 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); |
789 | cmd.data_size = sizeof(rq); | |
790 | cmd.cmd_version = 0; | |
791 | ||
b7e8a8e1 | 792 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 793 | if (ret_len < 0) { |
79620497 | 794 | perror("[error] Error sending cmd"); |
4a744367 JD |
795 | goto error; |
796 | } | |
797 | assert(ret_len == sizeof(cmd)); | |
798 | ||
b7e8a8e1 | 799 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 800 | if (ret_len < 0) { |
79620497 | 801 | perror("[error] Error sending get_metadata request"); |
4a744367 JD |
802 | goto error; |
803 | } | |
804 | assert(ret_len == sizeof(rq)); | |
805 | ||
b7e8a8e1 | 806 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
807 | if (ret_len == 0) { |
808 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
809 | goto error; |
810 | } | |
4a744367 | 811 | if (ret_len < 0) { |
79620497 | 812 | perror("[error] Error receiving metadata response"); |
4a744367 JD |
813 | goto error; |
814 | } | |
815 | assert(ret_len == sizeof(rp)); | |
816 | ||
817 | switch (be32toh(rp.status)) { | |
818 | case LTTNG_VIEWER_METADATA_OK: | |
819 | printf_verbose("get_metadata : OK\n"); | |
820 | break; | |
821 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
822 | printf_verbose("get_metadata : NO NEW\n"); | |
9abca178 | 823 | ret = 0; |
4a744367 JD |
824 | goto end; |
825 | case LTTNG_VIEWER_METADATA_ERR: | |
826 | printf_verbose("get_metadata : ERR\n"); | |
8ace20bf | 827 | goto error; |
4a744367 JD |
828 | default: |
829 | printf_verbose("get_metadata : UNKNOWN\n"); | |
8ace20bf | 830 | goto error; |
4a744367 JD |
831 | } |
832 | ||
833 | len = be64toh(rp.len); | |
834 | printf_verbose("Writing %" PRIu64" bytes to metadata\n", len); | |
835 | if (len <= 0) { | |
8ace20bf | 836 | goto error; |
4a744367 JD |
837 | } |
838 | ||
839 | data = zmalloc(len); | |
840 | if (!data) { | |
841 | perror("relay data zmalloc"); | |
4a744367 JD |
842 | goto error; |
843 | } | |
b7e8a8e1 | 844 | ret_len = lttng_live_recv(ctx->control_sock, data, len); |
f8612f31 MD |
845 | if (ret_len == 0) { |
846 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
8ace20bf | 847 | goto error_free_data; |
f8612f31 | 848 | } |
4a744367 | 849 | if (ret_len < 0) { |
79620497 | 850 | perror("[error] Error receiving trace packet"); |
8ace20bf | 851 | goto error_free_data; |
4a744367 JD |
852 | } |
853 | assert(ret_len == len); | |
854 | ||
855 | do { | |
af701dc4 JD |
856 | ret_len = fwrite(data, 1, len, |
857 | metadata_stream->metadata_fp_write); | |
4a744367 JD |
858 | } while (ret_len < 0 && errno == EINTR); |
859 | if (ret_len < 0) { | |
af701dc4 | 860 | fprintf(stderr, "[error] Writing in the metadata fp\n"); |
8ace20bf | 861 | goto error_free_data; |
4a744367 JD |
862 | } |
863 | assert(ret_len == len); | |
af701dc4 | 864 | metadata_stream->metadata_len += len; |
8ace20bf | 865 | free(data); |
9abca178 | 866 | ret = len; |
8ace20bf MD |
867 | end: |
868 | return ret; | |
4a744367 | 869 | |
8ace20bf | 870 | error_free_data: |
4a744367 | 871 | free(data); |
4a744367 | 872 | error: |
8ace20bf | 873 | return -1; |
4a744367 JD |
874 | } |
875 | ||
9abca178 JD |
876 | /* |
877 | * Return 0 on success, a negative value on error. | |
878 | */ | |
879 | static | |
880 | int get_new_metadata(struct lttng_live_ctx *ctx, | |
af701dc4 JD |
881 | struct lttng_live_viewer_stream *viewer_stream, |
882 | char **metadata_buf) | |
9abca178 JD |
883 | { |
884 | int ret = 0; | |
885 | struct lttng_live_viewer_stream *metadata_stream; | |
43273943 | 886 | size_t size, len_read = 0; |
9abca178 JD |
887 | |
888 | metadata_stream = viewer_stream->ctf_trace->metadata_stream; | |
50d207af JD |
889 | if (!metadata_stream) { |
890 | fprintf(stderr, "[error] No metadata stream\n"); | |
891 | ret = -1; | |
892 | goto error; | |
893 | } | |
af701dc4 JD |
894 | metadata_stream->metadata_len = 0; |
895 | ret = open_metadata_fp_write(metadata_stream, metadata_buf, &size); | |
896 | if (ret < 0) { | |
897 | goto error; | |
898 | } | |
9abca178 JD |
899 | |
900 | do { | |
901 | /* | |
902 | * get_one_metadata_packet returns the number of bytes | |
903 | * received, 0 when we have received everything, a | |
904 | * negative value on error. | |
905 | */ | |
906 | ret = get_one_metadata_packet(ctx, metadata_stream); | |
c111d5d7 MD |
907 | if (ret > 0) { |
908 | len_read += ret; | |
909 | } | |
85e2085e MD |
910 | if (!len_read) { |
911 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); | |
912 | } | |
c111d5d7 | 913 | } while (ret > 0 || !len_read); |
9abca178 | 914 | |
7def295f MD |
915 | if (fclose(metadata_stream->metadata_fp_write)) |
916 | perror("fclose"); | |
af701dc4 JD |
917 | metadata_stream->metadata_fp_write = NULL; |
918 | ||
919 | error: | |
9abca178 JD |
920 | return ret; |
921 | } | |
922 | ||
4a744367 JD |
923 | /* |
924 | * Get one index for a stream. | |
925 | * | |
926 | * Returns 0 on success or a negative value on error. | |
927 | */ | |
928 | static | |
929 | int get_next_index(struct lttng_live_ctx *ctx, | |
930 | struct lttng_live_viewer_stream *viewer_stream, | |
931 | struct packet_index *index) | |
932 | { | |
933 | struct lttng_viewer_cmd cmd; | |
934 | struct lttng_viewer_get_next_index rq; | |
935 | struct lttng_viewer_index rp; | |
936 | int ret; | |
4a744367 JD |
937 | ssize_t ret_len; |
938 | ||
939 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
940 | cmd.data_size = sizeof(rq); | |
941 | cmd.cmd_version = 0; | |
942 | ||
943 | memset(&rq, 0, sizeof(rq)); | |
944 | rq.stream_id = htobe64(viewer_stream->id); | |
945 | ||
946 | retry: | |
8ace20bf MD |
947 | if (lttng_live_should_quit()) { |
948 | ret = -1; | |
949 | goto end; | |
950 | } | |
b7e8a8e1 | 951 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
4a744367 | 952 | if (ret_len < 0) { |
79620497 | 953 | perror("[error] Error sending cmd"); |
4a744367 JD |
954 | goto error; |
955 | } | |
956 | assert(ret_len == sizeof(cmd)); | |
957 | ||
b7e8a8e1 | 958 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
4a744367 | 959 | if (ret_len < 0) { |
79620497 | 960 | perror("[error] Error sending get_next_index request"); |
4a744367 JD |
961 | goto error; |
962 | } | |
963 | assert(ret_len == sizeof(rq)); | |
964 | ||
b7e8a8e1 | 965 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
966 | if (ret_len == 0) { |
967 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
968 | goto error; |
969 | } | |
4a744367 | 970 | if (ret_len < 0) { |
79620497 | 971 | perror("[error] Error receiving index response"); |
4a744367 JD |
972 | goto error; |
973 | } | |
974 | assert(ret_len == sizeof(rp)); | |
975 | ||
976 | rp.flags = be32toh(rp.flags); | |
977 | ||
978 | switch (be32toh(rp.status)) { | |
979 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
980 | printf_verbose("get_next_index: inactive\n"); | |
981 | memset(index, 0, sizeof(struct packet_index)); | |
992e8cc0 | 982 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); |
4a744367 JD |
983 | break; |
984 | case LTTNG_VIEWER_INDEX_OK: | |
985 | printf_verbose("get_next_index: Ok, need metadata update : %u\n", | |
986 | rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA); | |
987 | index->offset = be64toh(rp.offset); | |
988 | index->packet_size = be64toh(rp.packet_size); | |
989 | index->content_size = be64toh(rp.content_size); | |
992e8cc0 MD |
990 | index->ts_cycles.timestamp_begin = be64toh(rp.timestamp_begin); |
991 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
4a744367 JD |
992 | index->events_discarded = be64toh(rp.events_discarded); |
993 | ||
994 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
50d207af JD |
995 | ret = append_metadata(ctx, viewer_stream); |
996 | if (ret) | |
4a744367 | 997 | goto error; |
4a744367 | 998 | } |
2acdc547 | 999 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { |
43273943 | 1000 | printf_verbose("get_next_index: need new streams\n"); |
2acdc547 JD |
1001 | ret = ask_new_streams(ctx); |
1002 | if (ret < 0) | |
1003 | goto error; | |
43273943 JD |
1004 | else if (ret > 0) |
1005 | g_hash_table_foreach(ctx->session->ctf_traces, | |
1006 | add_traces, ctx->bt_ctx); | |
2acdc547 | 1007 | } |
4a744367 JD |
1008 | break; |
1009 | case LTTNG_VIEWER_INDEX_RETRY: | |
1010 | printf_verbose("get_next_index: retry\n"); | |
85e2085e | 1011 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); |
4a744367 JD |
1012 | goto retry; |
1013 | case LTTNG_VIEWER_INDEX_HUP: | |
1014 | printf_verbose("get_next_index: stream hung up\n"); | |
1015 | viewer_stream->id = -1ULL; | |
4a744367 | 1016 | index->offset = EOF; |
2acdc547 | 1017 | ctx->session->stream_count--; |
4a744367 JD |
1018 | break; |
1019 | case LTTNG_VIEWER_INDEX_ERR: | |
1020 | fprintf(stderr, "[error] get_next_index: error\n"); | |
4a744367 JD |
1021 | goto error; |
1022 | default: | |
1023 | fprintf(stderr, "[error] get_next_index: unkwown value\n"); | |
4a744367 JD |
1024 | goto error; |
1025 | } | |
4a744367 | 1026 | ret = 0; |
8ace20bf MD |
1027 | end: |
1028 | return ret; | |
4a744367 JD |
1029 | |
1030 | error: | |
8ace20bf | 1031 | return -1; |
4a744367 JD |
1032 | } |
1033 | ||
b5a1fa45 | 1034 | static |
4a744367 JD |
1035 | void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, size_t index, |
1036 | int whence) | |
1037 | { | |
1038 | struct ctf_stream_pos *pos; | |
1039 | struct ctf_file_stream *file_stream; | |
f1f52630 | 1040 | struct packet_index *prev_index = NULL, *cur_index; |
4a744367 JD |
1041 | struct lttng_live_viewer_stream *viewer_stream; |
1042 | struct lttng_live_session *session; | |
1043 | int ret; | |
1044 | ||
1045 | retry: | |
1046 | pos = ctf_pos(stream_pos); | |
1047 | file_stream = container_of(pos, struct ctf_file_stream, pos); | |
1048 | viewer_stream = (struct lttng_live_viewer_stream *) pos->priv; | |
1049 | session = viewer_stream->session; | |
1050 | ||
f1f52630 MD |
1051 | switch (pos->packet_index->len) { |
1052 | case 0: | |
1053 | g_array_set_size(pos->packet_index, 1); | |
1054 | cur_index = &g_array_index(pos->packet_index, | |
1055 | struct packet_index, 0); | |
1056 | break; | |
1057 | case 1: | |
1058 | g_array_set_size(pos->packet_index, 2); | |
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 | case 2: | |
1065 | g_array_index(pos->packet_index, | |
1066 | struct packet_index, 0) = | |
1067 | g_array_index(pos->packet_index, | |
1068 | struct packet_index, 1); | |
1069 | prev_index = &g_array_index(pos->packet_index, | |
1070 | struct packet_index, 0); | |
1071 | cur_index = &g_array_index(pos->packet_index, | |
1072 | struct packet_index, 1); | |
1073 | break; | |
1074 | default: | |
1075 | abort(); | |
1076 | break; | |
1077 | } | |
4a744367 | 1078 | printf_verbose("get_next_index for stream %" PRIu64 "\n", viewer_stream->id); |
f1f52630 | 1079 | ret = get_next_index(session->ctx, viewer_stream, cur_index); |
4a744367 JD |
1080 | if (ret < 0) { |
1081 | pos->offset = EOF; | |
f28fb4b6 JG |
1082 | if (!lttng_live_should_quit()) { |
1083 | fprintf(stderr, "[error] get_next_index failed\n"); | |
1084 | } | |
4a744367 JD |
1085 | return; |
1086 | } | |
1087 | ||
f1f52630 MD |
1088 | pos->packet_size = cur_index->packet_size; |
1089 | pos->content_size = cur_index->content_size; | |
4a744367 | 1090 | pos->mmap_base_offset = 0; |
f1f52630 | 1091 | if (cur_index->offset == EOF) { |
4a744367 JD |
1092 | pos->offset = EOF; |
1093 | } else { | |
1094 | pos->offset = 0; | |
1095 | } | |
1096 | ||
f1f52630 MD |
1097 | if (cur_index->content_size == 0) { |
1098 | file_stream->parent.cycles_timestamp = | |
1099 | cur_index->ts_cycles.timestamp_end; | |
4a744367 | 1100 | file_stream->parent.real_timestamp = ctf_get_real_timestamp( |
f1f52630 MD |
1101 | &file_stream->parent, |
1102 | cur_index->ts_cycles.timestamp_end); | |
4a744367 | 1103 | } else { |
f1f52630 MD |
1104 | /* Convert the timestamps and append to the real_index. */ |
1105 | cur_index->ts_real.timestamp_begin = ctf_get_real_timestamp( | |
1106 | &file_stream->parent, | |
1107 | cur_index->ts_cycles.timestamp_begin); | |
1108 | cur_index->ts_real.timestamp_end = ctf_get_real_timestamp( | |
1109 | &file_stream->parent, | |
1110 | cur_index->ts_cycles.timestamp_end); | |
1111 | ||
1112 | ctf_update_current_packet_index(&file_stream->parent, | |
1113 | prev_index, cur_index); | |
1114 | ||
1115 | file_stream->parent.cycles_timestamp = | |
1116 | cur_index->ts_cycles.timestamp_begin; | |
1117 | file_stream->parent.real_timestamp = | |
1118 | cur_index->ts_real.timestamp_begin; | |
4a744367 JD |
1119 | } |
1120 | ||
1121 | if (pos->packet_size == 0 || pos->offset == EOF) { | |
1122 | goto end; | |
1123 | } | |
1124 | ||
1125 | printf_verbose("get_data_packet for stream %" PRIu64 "\n", | |
1126 | viewer_stream->id); | |
1127 | ret = get_data_packet(session->ctx, pos, viewer_stream, | |
c1e8ac81 | 1128 | cur_index->offset, |
f1f52630 | 1129 | cur_index->packet_size / CHAR_BIT); |
4a744367 JD |
1130 | if (ret == -2) { |
1131 | goto retry; | |
1132 | } else if (ret < 0) { | |
1133 | pos->offset = EOF; | |
f28fb4b6 JG |
1134 | if (!lttng_live_should_quit()) { |
1135 | fprintf(stderr, "[error] get_data_packet failed\n"); | |
1136 | } | |
4a744367 JD |
1137 | return; |
1138 | } | |
1139 | ||
1140 | printf_verbose("Index received : packet_size : %" PRIu64 | |
1141 | ", offset %" PRIu64 ", content_size %" PRIu64 | |
1142 | ", timestamp_end : %" PRIu64 "\n", | |
f1f52630 MD |
1143 | cur_index->packet_size, cur_index->offset, |
1144 | cur_index->content_size, | |
1145 | cur_index->ts_cycles.timestamp_end); | |
4a744367 JD |
1146 | |
1147 | /* update trace_packet_header and stream_packet_context */ | |
1148 | if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) { | |
1149 | /* Read packet header */ | |
1150 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); | |
1151 | if (ret) { | |
1152 | pos->offset = EOF; | |
1153 | fprintf(stderr, "[error] trace packet header read failed\n"); | |
1154 | goto end; | |
1155 | } | |
1156 | } | |
1157 | if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) { | |
1158 | /* Read packet context */ | |
1159 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); | |
1160 | if (ret) { | |
1161 | pos->offset = EOF; | |
1162 | fprintf(stderr, "[error] stream packet context read failed\n"); | |
1163 | goto end; | |
1164 | } | |
1165 | } | |
1166 | pos->data_offset = pos->offset; | |
1167 | ||
1168 | end: | |
1169 | return; | |
1170 | } | |
1171 | ||
2acdc547 JD |
1172 | int lttng_live_create_viewer_session(struct lttng_live_ctx *ctx) |
1173 | { | |
1174 | struct lttng_viewer_cmd cmd; | |
1175 | struct lttng_viewer_create_session_response resp; | |
1176 | int ret; | |
1177 | ssize_t ret_len; | |
1178 | ||
8ace20bf MD |
1179 | if (lttng_live_should_quit()) { |
1180 | ret = -1; | |
1181 | goto end; | |
1182 | } | |
1183 | ||
2acdc547 JD |
1184 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); |
1185 | cmd.data_size = 0; | |
1186 | cmd.cmd_version = 0; | |
1187 | ||
b7e8a8e1 | 1188 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
2acdc547 | 1189 | if (ret_len < 0) { |
79620497 | 1190 | perror("[error] Error sending cmd"); |
2acdc547 JD |
1191 | goto error; |
1192 | } | |
1193 | assert(ret_len == sizeof(cmd)); | |
1194 | ||
b7e8a8e1 | 1195 | ret_len = lttng_live_recv(ctx->control_sock, &resp, sizeof(resp)); |
f8612f31 MD |
1196 | if (ret_len == 0) { |
1197 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1198 | goto error; |
1199 | } | |
2acdc547 | 1200 | if (ret_len < 0) { |
79620497 | 1201 | perror("[error] Error receiving create session reply"); |
2acdc547 JD |
1202 | goto error; |
1203 | } | |
1204 | assert(ret_len == sizeof(resp)); | |
1205 | ||
1206 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
1207 | fprintf(stderr, "[error] Error creating viewer session\n"); | |
2acdc547 JD |
1208 | goto error; |
1209 | } | |
1210 | ret = 0; | |
8ace20bf MD |
1211 | end: |
1212 | return ret; | |
2acdc547 JD |
1213 | |
1214 | error: | |
8ace20bf | 1215 | return -1; |
2acdc547 JD |
1216 | } |
1217 | ||
1218 | static | |
1219 | int del_traces(gpointer key, gpointer value, gpointer user_data) | |
4a744367 JD |
1220 | { |
1221 | struct bt_context *bt_ctx = user_data; | |
1222 | struct lttng_live_ctf_trace *trace = value; | |
1223 | int ret; | |
1224 | ||
1225 | ret = bt_context_remove_trace(bt_ctx, trace->trace_id); | |
1226 | if (ret < 0) | |
1227 | fprintf(stderr, "[error] removing trace from context\n"); | |
1228 | ||
1229 | /* remove the key/value pair from the HT. */ | |
1230 | return 1; | |
1231 | } | |
1232 | ||
2acdc547 JD |
1233 | static |
1234 | void add_traces(gpointer key, gpointer value, gpointer user_data) | |
4a744367 | 1235 | { |
9abca178 | 1236 | int i, ret; |
4a744367 JD |
1237 | struct bt_context *bt_ctx = user_data; |
1238 | struct lttng_live_ctf_trace *trace = value; | |
1239 | struct lttng_live_viewer_stream *stream; | |
1240 | struct bt_mmap_stream *new_mmap_stream; | |
1241 | struct bt_mmap_stream_list mmap_list; | |
1242 | struct lttng_live_ctx *ctx = NULL; | |
150595c4 JD |
1243 | struct bt_trace_descriptor *td; |
1244 | struct bt_trace_handle *handle; | |
4a744367 | 1245 | |
b5a1fa45 JD |
1246 | /* |
1247 | * We don't know how many streams we will receive for a trace, so | |
1248 | * once we are done receiving the traces, we add all the traces | |
1249 | * received to the bt_context. | |
1250 | * We can receive streams during the attach command or the | |
1251 | * get_new_streams, so we have to make sure not to add multiple | |
1252 | * times the same traces. | |
1253 | * If a trace is already in the context, we just skip this function. | |
1254 | */ | |
2acdc547 JD |
1255 | if (trace->in_use) |
1256 | return; | |
1257 | ||
4a744367 JD |
1258 | BT_INIT_LIST_HEAD(&mmap_list.head); |
1259 | ||
1260 | for (i = 0; i < trace->streams->len; i++) { | |
1261 | stream = g_ptr_array_index(trace->streams, i); | |
1262 | ctx = stream->session->ctx; | |
1263 | ||
1264 | if (!stream->metadata_flag) { | |
1265 | new_mmap_stream = zmalloc(sizeof(struct bt_mmap_stream)); | |
1266 | new_mmap_stream->priv = (void *) stream; | |
1267 | new_mmap_stream->fd = -1; | |
1268 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); | |
1269 | } else { | |
af701dc4 JD |
1270 | char *metadata_buf = NULL; |
1271 | ||
4a744367 | 1272 | /* Get all possible metadata before starting */ |
af701dc4 JD |
1273 | ret = get_new_metadata(ctx, stream, &metadata_buf); |
1274 | if (ret) { | |
1275 | free(metadata_buf); | |
1276 | goto end_free; | |
1277 | } | |
1278 | if (!stream->metadata_len) { | |
1279 | fprintf(stderr, "[error] empty metadata\n"); | |
1280 | ret = -1; | |
1281 | free(metadata_buf); | |
1282 | goto end_free; | |
1283 | } | |
1284 | ||
1285 | trace->metadata_fp = babeltrace_fmemopen(metadata_buf, | |
1286 | stream->metadata_len, "rb"); | |
1287 | if (!trace->metadata_fp) { | |
1288 | perror("Metadata fmemopen"); | |
1289 | ret = -1; | |
1290 | free(metadata_buf); | |
9abca178 | 1291 | goto end_free; |
af701dc4 | 1292 | } |
4a744367 JD |
1293 | } |
1294 | } | |
1295 | ||
1296 | if (!trace->metadata_fp) { | |
1297 | fprintf(stderr, "[error] No metadata stream opened\n"); | |
1298 | goto end_free; | |
1299 | } | |
1300 | ||
1301 | ret = bt_context_add_trace(bt_ctx, NULL, "ctf", | |
1302 | ctf_live_packet_seek, &mmap_list, trace->metadata_fp); | |
1303 | if (ret < 0) { | |
1304 | fprintf(stderr, "[error] Error adding trace\n"); | |
1305 | goto end_free; | |
1306 | } | |
af701dc4 JD |
1307 | trace->metadata_stream->metadata_len = 0; |
1308 | ||
150595c4 JD |
1309 | handle = (struct bt_trace_handle *) g_hash_table_lookup( |
1310 | bt_ctx->trace_handles, | |
1311 | (gpointer) (unsigned long) ret); | |
1312 | td = handle->td; | |
1313 | trace->handle = handle; | |
2acdc547 | 1314 | if (bt_ctx->current_iterator) { |
2acdc547 JD |
1315 | bt_iter_add_trace(bt_ctx->current_iterator, td); |
1316 | } | |
1317 | ||
4a744367 | 1318 | trace->trace_id = ret; |
2acdc547 | 1319 | trace->in_use = 1; |
4a744367 JD |
1320 | |
1321 | goto end; | |
1322 | ||
1323 | end_free: | |
1324 | bt_context_put(bt_ctx); | |
1325 | end: | |
1326 | return; | |
1327 | } | |
1328 | ||
43273943 JD |
1329 | /* |
1330 | * Request new streams for a session. | |
1331 | * Returns the number of streams received or a negative value on error. | |
1332 | */ | |
2acdc547 | 1333 | int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id) |
6192b988 JD |
1334 | { |
1335 | struct lttng_viewer_cmd cmd; | |
2acdc547 JD |
1336 | struct lttng_viewer_new_streams_request rq; |
1337 | struct lttng_viewer_new_streams_response rp; | |
1338 | struct lttng_viewer_stream stream; | |
43273943 | 1339 | int ret, i, nb_streams = 0; |
6192b988 | 1340 | ssize_t ret_len; |
b5a1fa45 | 1341 | uint32_t stream_count; |
6192b988 | 1342 | |
8ace20bf MD |
1343 | if (lttng_live_should_quit()) { |
1344 | ret = -1; | |
1345 | goto end; | |
1346 | } | |
1347 | ||
2acdc547 JD |
1348 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); |
1349 | cmd.data_size = sizeof(rq); | |
6192b988 JD |
1350 | cmd.cmd_version = 0; |
1351 | ||
2acdc547 JD |
1352 | memset(&rq, 0, sizeof(rq)); |
1353 | rq.session_id = htobe64(id); | |
1354 | ||
b7e8a8e1 | 1355 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
6192b988 | 1356 | if (ret_len < 0) { |
79620497 | 1357 | perror("[error] Error sending cmd"); |
6192b988 JD |
1358 | goto error; |
1359 | } | |
1360 | assert(ret_len == sizeof(cmd)); | |
1361 | ||
b7e8a8e1 | 1362 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
6192b988 | 1363 | if (ret_len < 0) { |
79620497 | 1364 | perror("[error] Error sending get_new_streams request"); |
6192b988 JD |
1365 | goto error; |
1366 | } | |
2acdc547 | 1367 | assert(ret_len == sizeof(rq)); |
6192b988 | 1368 | |
b7e8a8e1 | 1369 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
f8612f31 MD |
1370 | if (ret_len == 0) { |
1371 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1372 | goto error; |
1373 | } | |
2acdc547 | 1374 | if (ret_len < 0) { |
79620497 | 1375 | perror("[error] Error receiving get_new_streams response"); |
6192b988 JD |
1376 | goto error; |
1377 | } | |
2acdc547 JD |
1378 | assert(ret_len == sizeof(rp)); |
1379 | ||
1380 | switch(be32toh(rp.status)) { | |
1381 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1382 | break; | |
1383 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1384 | ret = 0; | |
1385 | goto end; | |
1386 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1387 | ret = -LTTNG_VIEWER_NEW_STREAMS_HUP; | |
1388 | goto end; | |
1389 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
1390 | fprintf(stderr, "[error] get_new_streams error\n"); | |
8ace20bf | 1391 | goto error; |
2acdc547 JD |
1392 | default: |
1393 | fprintf(stderr, "[error] Unknown return code %u\n", | |
1394 | be32toh(rp.status)); | |
8ace20bf | 1395 | goto error; |
2acdc547 JD |
1396 | } |
1397 | ||
b5a1fa45 JD |
1398 | stream_count = be32toh(rp.streams_count); |
1399 | ctx->session->stream_count += stream_count; | |
2acdc547 JD |
1400 | /* |
1401 | * When the session is created but not started, we do an active wait | |
1402 | * until it starts. It allows the viewer to start processing the trace | |
1403 | * as soon as the session starts. | |
1404 | */ | |
1405 | if (ctx->session->stream_count == 0) { | |
1406 | ret = 0; | |
1407 | goto end; | |
1408 | } | |
1409 | printf_verbose("Waiting for %" PRIu64 " streams:\n", | |
1410 | ctx->session->stream_count); | |
1411 | ctx->session->streams = g_new0(struct lttng_live_viewer_stream, | |
1412 | ctx->session->stream_count); | |
b5a1fa45 | 1413 | for (i = 0; i < stream_count; i++) { |
b7e8a8e1 | 1414 | ret_len = lttng_live_recv(ctx->control_sock, &stream, sizeof(stream)); |
f8612f31 MD |
1415 | if (ret_len == 0) { |
1416 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
f8612f31 MD |
1417 | goto error; |
1418 | } | |
2acdc547 | 1419 | if (ret_len < 0) { |
79620497 | 1420 | perror("[error] Error receiving stream"); |
2acdc547 JD |
1421 | goto error; |
1422 | } | |
1423 | assert(ret_len == sizeof(stream)); | |
1424 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
1425 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
1426 | ||
1427 | printf_verbose(" stream %" PRIu64 " : %s/%s\n", | |
1428 | be64toh(stream.id), stream.path_name, | |
1429 | stream.channel_name); | |
1430 | ctx->session->streams[i].id = be64toh(stream.id); | |
1431 | ctx->session->streams[i].session = ctx->session; | |
1432 | ||
1433 | ctx->session->streams[i].first_read = 1; | |
1434 | ctx->session->streams[i].mmap_size = 0; | |
1435 | ||
1436 | if (be32toh(stream.metadata_flag)) { | |
2acdc547 | 1437 | ctx->session->streams[i].metadata_flag = 1; |
2acdc547 JD |
1438 | } |
1439 | ret = lttng_live_ctf_trace_assign(&ctx->session->streams[i], | |
1440 | be64toh(stream.ctf_trace_id)); | |
1441 | if (ret < 0) { | |
1442 | goto error; | |
1443 | } | |
43273943 | 1444 | nb_streams++; |
2acdc547 JD |
1445 | |
1446 | } | |
43273943 | 1447 | ret = nb_streams; |
2acdc547 | 1448 | end: |
6192b988 | 1449 | return ret; |
8ace20bf MD |
1450 | |
1451 | error: | |
1452 | return -1; | |
6192b988 JD |
1453 | } |
1454 | ||
23285bf3 | 1455 | int lttng_live_read(struct lttng_live_ctx *ctx) |
4a744367 | 1456 | { |
23285bf3 JG |
1457 | int ret = -1; |
1458 | int i; | |
4a744367 JD |
1459 | struct bt_ctf_iter *iter; |
1460 | const struct bt_ctf_event *event; | |
1461 | struct bt_iter_pos begin_pos; | |
1462 | struct bt_trace_descriptor *td_write; | |
1463 | struct bt_format *fmt_write; | |
1464 | struct ctf_text_stream_pos *sout; | |
2acdc547 | 1465 | uint64_t id; |
4a744367 | 1466 | |
2acdc547 JD |
1467 | ctx->bt_ctx = bt_context_create(); |
1468 | if (!ctx->bt_ctx) { | |
4a744367 JD |
1469 | fprintf(stderr, "[error] bt_context_create allocation\n"); |
1470 | goto end; | |
1471 | } | |
1472 | ||
1473 | fmt_write = bt_lookup_format(g_quark_from_static_string("text")); | |
1474 | if (!fmt_write) { | |
1475 | fprintf(stderr, "[error] ctf-text error\n"); | |
1476 | goto end; | |
1477 | } | |
1478 | ||
1479 | td_write = fmt_write->open_trace(NULL, O_RDWR, NULL, NULL); | |
1480 | if (!td_write) { | |
1481 | fprintf(stderr, "[error] Error opening output trace\n"); | |
1482 | goto end_free; | |
1483 | } | |
1484 | ||
1485 | sout = container_of(td_write, struct ctf_text_stream_pos, | |
1486 | trace_descriptor); | |
85bb4663 | 1487 | if (!sout->parent.event_cb) { |
4a744367 | 1488 | goto end_free; |
85bb4663 | 1489 | } |
4a744367 | 1490 | |
6192b988 JD |
1491 | ret = lttng_live_create_viewer_session(ctx); |
1492 | if (ret < 0) { | |
1493 | goto end_free; | |
1494 | } | |
1495 | ||
2acdc547 JD |
1496 | for (i = 0; i < ctx->session_ids->len; i++) { |
1497 | id = g_array_index(ctx->session_ids, uint64_t, i); | |
1498 | printf_verbose("Attaching to session %lu\n", id); | |
1499 | ret = lttng_live_attach_session(ctx, id); | |
1500 | printf_verbose("Attaching session returns %d\n", ret); | |
1501 | if (ret < 0) { | |
1502 | if (ret == -LTTNG_VIEWER_ATTACH_UNK) { | |
1503 | fprintf(stderr, "[error] Unknown session ID\n"); | |
1504 | } | |
1505 | goto end_free; | |
1506 | } | |
1507 | } | |
1508 | ||
4a744367 | 1509 | /* |
2acdc547 | 1510 | * As long as the session is active, we try to get new streams. |
4a744367 | 1511 | */ |
2acdc547 | 1512 | for (;;) { |
4a744367 JD |
1513 | int flags; |
1514 | ||
8ace20bf | 1515 | if (lttng_live_should_quit()) { |
23285bf3 | 1516 | ret = 0; |
8ace20bf MD |
1517 | goto end_free; |
1518 | } | |
1519 | ||
2acdc547 | 1520 | while (!ctx->session->stream_count) { |
8ace20bf MD |
1521 | if (lttng_live_should_quit() |
1522 | || ctx->session_ids->len == 0) { | |
23285bf3 | 1523 | ret = 0; |
4a744367 | 1524 | goto end_free; |
85bb4663 | 1525 | } |
2acdc547 | 1526 | ret = ask_new_streams(ctx); |
85bb4663 | 1527 | if (ret < 0) { |
2acdc547 | 1528 | goto end_free; |
85bb4663 MD |
1529 | } |
1530 | if (!ctx->session->stream_count) { | |
85e2085e | 1531 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); |
85bb4663 | 1532 | } |
2acdc547 | 1533 | } |
4a744367 | 1534 | |
2acdc547 JD |
1535 | g_hash_table_foreach(ctx->session->ctf_traces, add_traces, |
1536 | ctx->bt_ctx); | |
4a744367 JD |
1537 | |
1538 | begin_pos.type = BT_SEEK_BEGIN; | |
2acdc547 | 1539 | iter = bt_ctf_iter_create(ctx->bt_ctx, &begin_pos, NULL); |
4a744367 | 1540 | if (!iter) { |
f28fb4b6 JG |
1541 | if (lttng_live_should_quit()) { |
1542 | ret = 0; | |
1543 | goto end; | |
1544 | } | |
4a744367 JD |
1545 | fprintf(stderr, "[error] Iterator creation error\n"); |
1546 | goto end; | |
1547 | } | |
1548 | for (;;) { | |
8ace20bf | 1549 | if (lttng_live_should_quit()) { |
23285bf3 | 1550 | ret = 0; |
8ace20bf MD |
1551 | goto end_free; |
1552 | } | |
4a744367 JD |
1553 | event = bt_ctf_iter_read_event_flags(iter, &flags); |
1554 | if (!(flags & BT_ITER_FLAG_RETRY)) { | |
1555 | if (!event) { | |
1556 | /* End of trace */ | |
1557 | break; | |
1558 | } | |
1559 | ret = sout->parent.event_cb(&sout->parent, | |
1560 | event->parent->stream); | |
1561 | if (ret) { | |
1562 | fprintf(stderr, "[error] Writing " | |
1563 | "event failed.\n"); | |
1564 | goto end_free; | |
1565 | } | |
1566 | } | |
1567 | ret = bt_iter_next(bt_ctf_get_iter(iter)); | |
1568 | if (ret < 0) { | |
1569 | goto end_free; | |
1570 | } | |
1571 | } | |
1572 | bt_ctf_iter_destroy(iter); | |
2acdc547 JD |
1573 | g_hash_table_foreach_remove(ctx->session->ctf_traces, |
1574 | del_traces, ctx->bt_ctx); | |
1575 | ctx->session->stream_count = 0; | |
1576 | } | |
4a744367 JD |
1577 | |
1578 | end_free: | |
2acdc547 | 1579 | bt_context_put(ctx->bt_ctx); |
4a744367 | 1580 | end: |
f28fb4b6 JG |
1581 | if (lttng_live_should_quit()) { |
1582 | ret = 0; | |
1583 | } | |
23285bf3 | 1584 | return ret; |
4a744367 | 1585 | } |