Commit | Line | Data |
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12a91e9d 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> | |
6c5f6d07 | 36 | #include <poll.h> |
12a91e9d 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> | |
6c5f6d07 JD |
51 | #include <babeltrace/endian.h> |
52 | #include <babeltrace/compat/memstream.h> | |
12a91e9d JD |
53 | /* |
54 | #include <formats/ctf/events-private.h> | |
d81179de | 55 | replaced with |
12a91e9d JD |
56 | */ |
57 | #include "network-live.h" | |
d81179de | 58 | #include "lttngtop.h" |
12a91e9d | 59 | |
3bac1a1f | 60 | #include "lttng-live-comm.h" |
0c445945 | 61 | #include "lttng-viewer-abi.h" |
12a91e9d | 62 | |
6c5f6d07 JD |
63 | #define ACTIVE_POLL_DELAY 100 /* ms */ |
64 | ||
12a91e9d JD |
65 | /* |
66 | * Memory allocation zeroed | |
67 | */ | |
68 | #define zmalloc(x) calloc(1, x) | |
69 | ||
70 | #ifndef max_t | |
71 | #define max_t(type, a, b) \ | |
72 | ((type) (a) > (type) (b) ? (type) (a) : (type) (b)) | |
73 | #endif | |
74 | ||
d81179de JD |
75 | static void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, |
76 | size_t index, int whence); | |
77 | static void add_traces(gpointer key, gpointer value, gpointer user_data); | |
78 | static int del_traces(gpointer key, gpointer value, gpointer user_data); | |
6c5f6d07 JD |
79 | static int get_new_metadata(struct lttng_live_ctx *ctx, |
80 | struct lttng_live_viewer_stream *viewer_stream, | |
81 | char **metadata_buf); | |
82 | ||
83 | static | |
84 | ssize_t lttng_live_recv(int fd, void *buf, size_t len) | |
85 | { | |
86 | ssize_t ret; | |
87 | size_t copied = 0, to_copy = len; | |
88 | ||
89 | do { | |
90 | ret = recv(fd, buf + copied, to_copy, 0); | |
91 | if (ret > 0) { | |
92 | assert(ret <= to_copy); | |
93 | copied += ret; | |
94 | to_copy -= ret; | |
95 | } | |
96 | } while ((ret > 0 && to_copy > 0) | |
97 | || (ret < 0 && errno == EINTR)); | |
98 | if (ret > 0) | |
99 | ret = copied; | |
100 | /* ret = 0 means orderly shutdown, ret < 0 is error. */ | |
101 | return ret; | |
102 | } | |
103 | ||
104 | static | |
105 | ssize_t lttng_live_send(int fd, const void *buf, size_t len) | |
106 | { | |
107 | ssize_t ret; | |
108 | ||
109 | do { | |
110 | ret = send(fd, buf, len, MSG_NOSIGNAL); | |
111 | } while (ret < 0 && errno == EINTR); | |
112 | return ret; | |
113 | } | |
d81179de JD |
114 | |
115 | int lttng_live_connect_viewer(struct lttng_live_ctx *ctx) | |
12a91e9d JD |
116 | { |
117 | struct hostent *host; | |
118 | struct sockaddr_in server_addr; | |
119 | int ret; | |
120 | ||
6c5f6d07 | 121 | if (lttng_live_should_quit()) { |
12a91e9d JD |
122 | ret = -1; |
123 | goto end; | |
124 | } | |
125 | ||
6c5f6d07 JD |
126 | host = gethostbyname(ctx->relay_hostname); |
127 | if (!host) { | |
128 | fprintf(stderr, "[error] Cannot lookup hostname %s\n", | |
129 | ctx->relay_hostname); | |
130 | goto error; | |
131 | } | |
132 | ||
12a91e9d JD |
133 | if ((ctx->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { |
134 | perror("Socket"); | |
6c5f6d07 | 135 | goto error; |
12a91e9d JD |
136 | } |
137 | ||
138 | server_addr.sin_family = AF_INET; | |
d81179de | 139 | server_addr.sin_port = htons(ctx->port); |
12a91e9d JD |
140 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); |
141 | bzero(&(server_addr.sin_zero), 8); | |
142 | ||
143 | if (connect(ctx->control_sock, (struct sockaddr *) &server_addr, | |
144 | sizeof(struct sockaddr)) == -1) { | |
145 | perror("Connect"); | |
6c5f6d07 | 146 | goto error; |
12a91e9d JD |
147 | } |
148 | ||
149 | ret = 0; | |
150 | ||
151 | end: | |
152 | return ret; | |
6c5f6d07 JD |
153 | |
154 | error: | |
155 | fprintf(stderr, "[error] Connection failed\n"); | |
156 | return -1; | |
12a91e9d JD |
157 | } |
158 | ||
159 | int lttng_live_establish_connection(struct lttng_live_ctx *ctx) | |
160 | { | |
161 | struct lttng_viewer_cmd cmd; | |
162 | struct lttng_viewer_connect connect; | |
163 | int ret; | |
164 | ssize_t ret_len; | |
165 | ||
6c5f6d07 JD |
166 | if (lttng_live_should_quit()) { |
167 | ret = -1; | |
168 | goto end; | |
169 | } | |
170 | ||
12a91e9d JD |
171 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); |
172 | cmd.data_size = sizeof(connect); | |
173 | cmd.cmd_version = 0; | |
174 | ||
175 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
176 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
177 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
178 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
179 | ||
6c5f6d07 | 180 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
12a91e9d | 181 | if (ret_len < 0) { |
74f97e7d | 182 | perror("[error] Error sending cmd"); |
12a91e9d JD |
183 | goto error; |
184 | } | |
185 | assert(ret_len == sizeof(cmd)); | |
186 | ||
6c5f6d07 | 187 | ret_len = lttng_live_send(ctx->control_sock, &connect, sizeof(connect)); |
12a91e9d | 188 | if (ret_len < 0) { |
74f97e7d | 189 | perror("[error] Error sending version"); |
12a91e9d JD |
190 | goto error; |
191 | } | |
192 | assert(ret_len == sizeof(connect)); | |
193 | ||
6c5f6d07 | 194 | ret_len = lttng_live_recv(ctx->control_sock, &connect, sizeof(connect)); |
74f97e7d JD |
195 | if (ret_len == 0) { |
196 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
197 | goto error; |
198 | } | |
12a91e9d | 199 | if (ret_len < 0) { |
74f97e7d | 200 | perror("[error] Error receiving version"); |
12a91e9d JD |
201 | goto error; |
202 | } | |
203 | assert(ret_len == sizeof(connect)); | |
204 | ||
205 | printf_verbose("Received viewer session ID : %" PRIu64 "\n", | |
206 | be64toh(connect.viewer_session_id)); | |
207 | printf_verbose("Relayd version : %u.%u\n", be32toh(connect.major), | |
208 | be32toh(connect.minor)); | |
209 | ||
6c5f6d07 JD |
210 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { |
211 | fprintf(stderr, "[error] Incompatible lttng-relayd protocol\n"); | |
212 | goto error; | |
213 | } | |
214 | /* Use the smallest protocol version implemented. */ | |
215 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
216 | ctx->minor = be32toh(connect.minor); | |
217 | } else { | |
218 | ctx->minor = LTTNG_LIVE_MINOR; | |
219 | } | |
220 | ctx->major = LTTNG_LIVE_MAJOR; | |
12a91e9d | 221 | ret = 0; |
6c5f6d07 JD |
222 | end: |
223 | return ret; | |
12a91e9d JD |
224 | |
225 | error: | |
6c5f6d07 JD |
226 | fprintf(stderr, "[error] Unable to establish connection\n"); |
227 | return -1; | |
12a91e9d JD |
228 | } |
229 | ||
d81179de JD |
230 | static |
231 | void free_session_list(GPtrArray *session_list) | |
232 | { | |
233 | int i; | |
234 | struct lttng_live_relay_session *relay_session; | |
235 | ||
236 | for (i = 0; i < session_list->len; i++) { | |
237 | relay_session = g_ptr_array_index(session_list, i); | |
238 | free(relay_session->name); | |
239 | free(relay_session->hostname); | |
240 | } | |
241 | g_ptr_array_free(session_list, TRUE); | |
242 | } | |
243 | ||
244 | static | |
245 | void print_session_list(GPtrArray *session_list, const char *path) | |
246 | { | |
247 | int i; | |
248 | struct lttng_live_relay_session *relay_session; | |
249 | ||
250 | for (i = 0; i < session_list->len; i++) { | |
251 | relay_session = g_ptr_array_index(session_list, i); | |
252 | fprintf(stdout, "%s/host/%s/%s (timer = %u, " | |
253 | "%u stream(s), %u client(s) connected)\n", | |
254 | path, relay_session->hostname, | |
255 | relay_session->name, relay_session->timer, | |
256 | relay_session->streams, relay_session->clients); | |
257 | } | |
258 | } | |
259 | ||
260 | static | |
261 | void update_session_list(GPtrArray *session_list, char *hostname, | |
262 | char *session_name, uint32_t streams, uint32_t clients, | |
263 | uint32_t timer) | |
264 | { | |
265 | int i, found = 0; | |
266 | struct lttng_live_relay_session *relay_session; | |
267 | ||
268 | for (i = 0; i < session_list->len; i++) { | |
269 | relay_session = g_ptr_array_index(session_list, i); | |
270 | if ((strncmp(relay_session->hostname, hostname, NAME_MAX) == 0) && | |
271 | strncmp(relay_session->name, | |
272 | session_name, NAME_MAX) == 0) { | |
273 | relay_session->streams += streams; | |
274 | if (relay_session->clients < clients) | |
275 | relay_session->clients = clients; | |
276 | found = 1; | |
277 | break; | |
278 | } | |
279 | } | |
280 | if (found) | |
281 | return; | |
282 | ||
283 | relay_session = g_new0(struct lttng_live_relay_session, 1); | |
284 | relay_session->hostname = strndup(hostname, NAME_MAX); | |
285 | relay_session->name = strndup(session_name, NAME_MAX); | |
286 | relay_session->clients = clients; | |
287 | relay_session->streams = streams; | |
288 | relay_session->timer = timer; | |
289 | g_ptr_array_add(session_list, relay_session); | |
290 | } | |
291 | ||
12a91e9d JD |
292 | int lttng_live_list_sessions(struct lttng_live_ctx *ctx, const char *path) |
293 | { | |
294 | struct lttng_viewer_cmd cmd; | |
295 | struct lttng_viewer_list_sessions list; | |
296 | struct lttng_viewer_session lsession; | |
d81179de | 297 | int i, ret, sessions_count, print_list = 0; |
12a91e9d | 298 | ssize_t ret_len; |
d81179de JD |
299 | uint64_t session_id; |
300 | GPtrArray *session_list = NULL; | |
301 | ||
6c5f6d07 JD |
302 | if (lttng_live_should_quit()) { |
303 | ret = -1; | |
304 | goto end; | |
305 | } | |
306 | ||
d81179de JD |
307 | if (strlen(ctx->session_name) == 0) { |
308 | print_list = 1; | |
309 | session_list = g_ptr_array_new(); | |
310 | } | |
12a91e9d JD |
311 | |
312 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
313 | cmd.data_size = 0; | |
314 | cmd.cmd_version = 0; | |
315 | ||
6c5f6d07 | 316 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
12a91e9d | 317 | if (ret_len < 0) { |
74f97e7d | 318 | perror("[error] Error sending cmd"); |
12a91e9d JD |
319 | goto error; |
320 | } | |
321 | assert(ret_len == sizeof(cmd)); | |
322 | ||
6c5f6d07 | 323 | ret_len = lttng_live_recv(ctx->control_sock, &list, sizeof(list)); |
74f97e7d JD |
324 | if (ret_len == 0) { |
325 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
326 | goto error; |
327 | } | |
12a91e9d | 328 | if (ret_len < 0) { |
74f97e7d | 329 | perror("[error] Error receiving session list"); |
12a91e9d JD |
330 | goto error; |
331 | } | |
332 | assert(ret_len == sizeof(list)); | |
333 | ||
334 | sessions_count = be32toh(list.sessions_count); | |
12a91e9d | 335 | for (i = 0; i < sessions_count; i++) { |
6c5f6d07 | 336 | ret_len = lttng_live_recv(ctx->control_sock, &lsession, sizeof(lsession)); |
74f97e7d JD |
337 | if (ret_len == 0) { |
338 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
339 | goto error; |
340 | } | |
12a91e9d | 341 | if (ret_len < 0) { |
74f97e7d | 342 | perror("[error] Error receiving session"); |
12a91e9d JD |
343 | goto error; |
344 | } | |
345 | assert(ret_len == sizeof(lsession)); | |
346 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; | |
347 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
d81179de JD |
348 | session_id = be64toh(lsession.id); |
349 | ||
350 | if (print_list) { | |
351 | update_session_list(session_list, | |
352 | lsession.hostname, | |
353 | lsession.session_name, | |
354 | be32toh(lsession.streams), | |
355 | be32toh(lsession.clients), | |
356 | be32toh(lsession.live_timer)); | |
357 | } else { | |
358 | if ((strncmp(lsession.session_name, ctx->session_name, | |
359 | NAME_MAX) == 0) && (strncmp(lsession.hostname, | |
360 | ctx->traced_hostname, NAME_MAX) == 0)) { | |
361 | printf_verbose("Reading from session %" PRIu64 "\n", | |
362 | session_id); | |
363 | g_array_append_val(ctx->session_ids, | |
364 | session_id); | |
365 | } | |
366 | } | |
367 | } | |
12a91e9d | 368 | |
d81179de JD |
369 | if (print_list) { |
370 | print_session_list(session_list, path); | |
371 | free_session_list(session_list); | |
12a91e9d | 372 | } |
12a91e9d | 373 | ret = 0; |
6c5f6d07 JD |
374 | end: |
375 | return ret; | |
12a91e9d JD |
376 | |
377 | error: | |
6c5f6d07 JD |
378 | fprintf(stderr, "[error] Unable to list sessions\n"); |
379 | return -1; | |
12a91e9d JD |
380 | } |
381 | ||
382 | int lttng_live_ctf_trace_assign(struct lttng_live_viewer_stream *stream, | |
383 | uint64_t ctf_trace_id) | |
384 | { | |
385 | struct lttng_live_ctf_trace *trace; | |
386 | int ret = 0; | |
387 | ||
388 | trace = g_hash_table_lookup(stream->session->ctf_traces, | |
389 | (gpointer) ctf_trace_id); | |
390 | if (!trace) { | |
391 | trace = g_new0(struct lttng_live_ctf_trace, 1); | |
392 | trace->ctf_trace_id = ctf_trace_id; | |
393 | trace->streams = g_ptr_array_new(); | |
394 | g_hash_table_insert(stream->session->ctf_traces, | |
395 | (gpointer) ctf_trace_id, | |
396 | trace); | |
397 | } | |
398 | if (stream->metadata_flag) | |
399 | trace->metadata_stream = stream; | |
400 | ||
401 | stream->ctf_trace = trace; | |
402 | g_ptr_array_add(trace->streams, stream); | |
403 | ||
404 | return ret; | |
405 | } | |
406 | ||
6c5f6d07 JD |
407 | static |
408 | int open_metadata_fp_write(struct lttng_live_viewer_stream *stream, | |
409 | char **metadata_buf, size_t *size) | |
410 | { | |
411 | int ret = 0; | |
412 | ||
413 | stream->metadata_fp_write = | |
414 | babeltrace_open_memstream(metadata_buf, size); | |
415 | if (!stream->metadata_fp_write) { | |
416 | perror("Metadata open_memstream"); | |
417 | ret = -1; | |
418 | } | |
419 | ||
420 | return ret; | |
421 | } | |
422 | ||
12a91e9d JD |
423 | int lttng_live_attach_session(struct lttng_live_ctx *ctx, uint64_t id) |
424 | { | |
425 | struct lttng_viewer_cmd cmd; | |
426 | struct lttng_viewer_attach_session_request rq; | |
427 | struct lttng_viewer_attach_session_response rp; | |
428 | struct lttng_viewer_stream stream; | |
429 | int ret, i; | |
430 | ssize_t ret_len; | |
431 | ||
6c5f6d07 JD |
432 | if (lttng_live_should_quit()) { |
433 | ret = -1; | |
434 | goto end; | |
435 | } | |
436 | ||
12a91e9d JD |
437 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
438 | cmd.data_size = sizeof(rq); | |
439 | cmd.cmd_version = 0; | |
440 | ||
441 | memset(&rq, 0, sizeof(rq)); | |
442 | rq.session_id = htobe64(id); | |
443 | // TODO: add cmd line parameter to select seek beginning | |
6c5f6d07 | 444 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); |
68446c24 | 445 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); |
12a91e9d | 446 | |
6c5f6d07 | 447 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
12a91e9d | 448 | if (ret_len < 0) { |
74f97e7d | 449 | perror("[error] Error sending cmd"); |
12a91e9d JD |
450 | goto error; |
451 | } | |
452 | assert(ret_len == sizeof(cmd)); | |
453 | ||
6c5f6d07 | 454 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
12a91e9d | 455 | if (ret_len < 0) { |
74f97e7d | 456 | perror("[error] Error sending attach request"); |
12a91e9d JD |
457 | goto error; |
458 | } | |
459 | assert(ret_len == sizeof(rq)); | |
460 | ||
6c5f6d07 | 461 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
74f97e7d JD |
462 | if (ret_len == 0) { |
463 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
464 | goto error; |
465 | } | |
12a91e9d | 466 | if (ret_len < 0) { |
74f97e7d | 467 | perror("[error] Error receiving attach response"); |
12a91e9d JD |
468 | goto error; |
469 | } | |
470 | assert(ret_len == sizeof(rp)); | |
471 | ||
472 | switch(be32toh(rp.status)) { | |
473 | case LTTNG_VIEWER_ATTACH_OK: | |
474 | break; | |
475 | case LTTNG_VIEWER_ATTACH_UNK: | |
476 | ret = -LTTNG_VIEWER_ATTACH_UNK; | |
477 | goto end; | |
478 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
74f97e7d | 479 | fprintf(stderr, "[error] There is already a viewer attached to this session\n"); |
6c5f6d07 | 480 | goto error; |
12a91e9d JD |
481 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: |
482 | fprintf(stderr, "[error] Not a live session\n"); | |
6c5f6d07 | 483 | goto error; |
12a91e9d JD |
484 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: |
485 | fprintf(stderr, "[error] Wrong seek parameter\n"); | |
6c5f6d07 | 486 | goto error; |
12a91e9d JD |
487 | default: |
488 | fprintf(stderr, "[error] Unknown attach return code %u\n", | |
489 | be32toh(rp.status)); | |
6c5f6d07 | 490 | goto error; |
12a91e9d JD |
491 | } |
492 | if (be32toh(rp.status) != LTTNG_VIEWER_ATTACH_OK) { | |
6c5f6d07 | 493 | goto error; |
12a91e9d JD |
494 | } |
495 | ||
d81179de | 496 | ctx->session->stream_count += be32toh(rp.streams_count); |
12a91e9d JD |
497 | /* |
498 | * When the session is created but not started, we do an active wait | |
499 | * until it starts. It allows the viewer to start processing the trace | |
500 | * as soon as the session starts. | |
501 | */ | |
502 | if (ctx->session->stream_count == 0) { | |
503 | ret = 0; | |
504 | goto end; | |
505 | } | |
6c5f6d07 JD |
506 | printf_verbose("Waiting for %" PRIu64 " streams:\n", |
507 | ctx->session->stream_count); | |
12a91e9d JD |
508 | ctx->session->streams = g_new0(struct lttng_live_viewer_stream, |
509 | ctx->session->stream_count); | |
510 | for (i = 0; i < be32toh(rp.streams_count); i++) { | |
6c5f6d07 | 511 | ret_len = lttng_live_recv(ctx->control_sock, &stream, sizeof(stream)); |
74f97e7d JD |
512 | if (ret_len == 0) { |
513 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
514 | goto error; |
515 | } | |
12a91e9d | 516 | if (ret_len < 0) { |
74f97e7d | 517 | perror("[error] Error receiving stream"); |
12a91e9d JD |
518 | goto error; |
519 | } | |
520 | assert(ret_len == sizeof(stream)); | |
521 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
522 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
523 | ||
524 | printf_verbose(" stream %" PRIu64 " : %s/%s\n", | |
525 | be64toh(stream.id), stream.path_name, | |
526 | stream.channel_name); | |
527 | ctx->session->streams[i].id = be64toh(stream.id); | |
528 | ctx->session->streams[i].session = ctx->session; | |
529 | ||
12a91e9d | 530 | ctx->session->streams[i].mmap_size = 0; |
6c5f6d07 | 531 | ctx->session->streams[i].ctf_stream_id = -1ULL; |
12a91e9d JD |
532 | |
533 | if (be32toh(stream.metadata_flag)) { | |
12a91e9d | 534 | ctx->session->streams[i].metadata_flag = 1; |
12a91e9d JD |
535 | } |
536 | ret = lttng_live_ctf_trace_assign(&ctx->session->streams[i], | |
537 | be64toh(stream.ctf_trace_id)); | |
538 | if (ret < 0) { | |
539 | goto error; | |
540 | } | |
541 | ||
542 | } | |
543 | ret = 0; | |
12a91e9d | 544 | end: |
12a91e9d | 545 | return ret; |
6c5f6d07 JD |
546 | |
547 | error: | |
548 | return -1; | |
12a91e9d JD |
549 | } |
550 | ||
6c5f6d07 JD |
551 | /* |
552 | * Ask the relay for new streams. | |
553 | * | |
554 | * Returns the number of new streams received or a negative value on error. | |
555 | */ | |
d81179de JD |
556 | static |
557 | int ask_new_streams(struct lttng_live_ctx *ctx) | |
558 | { | |
6c5f6d07 | 559 | int i, ret = 0, nb_streams = 0; |
d81179de JD |
560 | uint64_t id; |
561 | ||
562 | restart: | |
563 | for (i = 0; i < ctx->session_ids->len; i++) { | |
564 | id = g_array_index(ctx->session_ids, uint64_t, i); | |
565 | ret = lttng_live_get_new_streams(ctx, id); | |
6c5f6d07 | 566 | printf_verbose("Asking for new streams returns %d\n", ret); |
d81179de | 567 | if (ret < 0) { |
6c5f6d07 JD |
568 | if (lttng_live_should_quit()) { |
569 | goto end; | |
570 | } | |
d81179de JD |
571 | if (ret == -LTTNG_VIEWER_NEW_STREAMS_HUP) { |
572 | printf_verbose("Session %" PRIu64 " closed\n", | |
573 | id); | |
574 | /* | |
575 | * The streams have already been closed during | |
576 | * the reading, so we only need to get rid of | |
577 | * the trace in our internal table of sessions. | |
578 | */ | |
579 | g_array_remove_index(ctx->session_ids, i); | |
580 | /* | |
581 | * We can't continue iterating on the g_array | |
582 | * after a remove, we have to start again. | |
583 | */ | |
584 | goto restart; | |
585 | } else { | |
586 | ret = -1; | |
587 | goto end; | |
588 | } | |
6c5f6d07 JD |
589 | } else { |
590 | nb_streams += ret; | |
d81179de JD |
591 | } |
592 | } | |
6c5f6d07 | 593 | ret = nb_streams; |
d81179de JD |
594 | |
595 | end: | |
596 | return ret; | |
597 | } | |
598 | ||
6c5f6d07 JD |
599 | static |
600 | int append_metadata(struct lttng_live_ctx *ctx, | |
601 | struct lttng_live_viewer_stream *viewer_stream) | |
602 | { | |
603 | int ret; | |
604 | struct lttng_live_viewer_stream *metadata; | |
605 | char *metadata_buf = NULL; | |
606 | ||
607 | printf_verbose("get_next_index: new metadata needed\n"); | |
608 | ret = get_new_metadata(ctx, viewer_stream, &metadata_buf); | |
609 | if (ret < 0) { | |
610 | free(metadata_buf); | |
611 | goto error; | |
612 | } | |
613 | ||
614 | metadata = viewer_stream->ctf_trace->metadata_stream; | |
615 | metadata->ctf_trace->metadata_fp = | |
616 | babeltrace_fmemopen(metadata_buf, | |
617 | metadata->metadata_len, "rb"); | |
618 | if (!metadata->ctf_trace->metadata_fp) { | |
619 | perror("Metadata fmemopen"); | |
620 | free(metadata_buf); | |
621 | ret = -1; | |
622 | goto error; | |
623 | } | |
624 | ret = ctf_append_trace_metadata( | |
625 | viewer_stream->ctf_trace->handle->td, | |
626 | metadata->ctf_trace->metadata_fp); | |
627 | /* We accept empty metadata packets */ | |
628 | if (ret != 0 && ret != -ENOENT) { | |
629 | fprintf(stderr, "[error] Appending metadata\n"); | |
630 | goto error; | |
631 | } | |
632 | ret = 0; | |
633 | ||
634 | error: | |
635 | return ret; | |
636 | } | |
637 | ||
12a91e9d JD |
638 | static |
639 | int get_data_packet(struct lttng_live_ctx *ctx, | |
640 | struct ctf_stream_pos *pos, | |
641 | struct lttng_live_viewer_stream *stream, uint64_t offset, | |
642 | uint64_t len) | |
643 | { | |
644 | struct lttng_viewer_cmd cmd; | |
645 | struct lttng_viewer_get_packet rq; | |
646 | struct lttng_viewer_trace_packet rp; | |
647 | ssize_t ret_len; | |
648 | int ret; | |
649 | ||
6c5f6d07 JD |
650 | retry: |
651 | if (lttng_live_should_quit()) { | |
652 | ret = -1; | |
653 | goto end; | |
654 | } | |
12a91e9d JD |
655 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); |
656 | cmd.data_size = sizeof(rq); | |
657 | cmd.cmd_version = 0; | |
658 | ||
659 | memset(&rq, 0, sizeof(rq)); | |
660 | rq.stream_id = htobe64(stream->id); | |
6c5f6d07 | 661 | rq.offset = htobe64(offset); |
12a91e9d JD |
662 | rq.len = htobe32(len); |
663 | ||
6c5f6d07 | 664 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
12a91e9d | 665 | if (ret_len < 0) { |
74f97e7d | 666 | perror("[error] Error sending cmd"); |
12a91e9d JD |
667 | goto error; |
668 | } | |
669 | assert(ret_len == sizeof(cmd)); | |
670 | ||
6c5f6d07 | 671 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
12a91e9d | 672 | if (ret_len < 0) { |
74f97e7d | 673 | perror("[error] Error sending get_data_packet request"); |
12a91e9d JD |
674 | goto error; |
675 | } | |
676 | assert(ret_len == sizeof(rq)); | |
677 | ||
6c5f6d07 | 678 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
74f97e7d JD |
679 | if (ret_len == 0) { |
680 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
681 | goto error; |
682 | } | |
12a91e9d | 683 | if (ret_len < 0) { |
74f97e7d | 684 | perror("[error] Error receiving data response"); |
12a91e9d JD |
685 | goto error; |
686 | } | |
687 | if (ret_len != sizeof(rp)) { | |
688 | fprintf(stderr, "[error] get_data_packet: expected %" PRId64 | |
6c5f6d07 JD |
689 | ", received %" PRId64 "\n", sizeof(rp), |
690 | ret_len); | |
12a91e9d JD |
691 | goto error; |
692 | } | |
693 | ||
694 | rp.flags = be32toh(rp.flags); | |
695 | ||
696 | switch (be32toh(rp.status)) { | |
697 | case LTTNG_VIEWER_GET_PACKET_OK: | |
698 | len = be32toh(rp.len); | |
699 | printf_verbose("get_data_packet: Ok, packet size : %" PRIu64 | |
700 | "\n", len); | |
701 | break; | |
702 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
6c5f6d07 | 703 | /* Unimplemented by relay daemon */ |
12a91e9d | 704 | printf_verbose("get_data_packet: retry\n"); |
6c5f6d07 | 705 | goto error; |
12a91e9d JD |
706 | case LTTNG_VIEWER_GET_PACKET_ERR: |
707 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
708 | printf_verbose("get_data_packet: new metadata needed\n"); | |
6c5f6d07 JD |
709 | ret = append_metadata(ctx, stream); |
710 | if (ret) | |
711 | goto error; | |
12a91e9d | 712 | } |
d81179de | 713 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { |
8fe4d0cf | 714 | printf_verbose("get_data_packet: new streams needed\n"); |
d81179de JD |
715 | ret = ask_new_streams(ctx); |
716 | if (ret < 0) | |
717 | goto error; | |
6c5f6d07 JD |
718 | else if (ret > 0) |
719 | g_hash_table_foreach(ctx->session->ctf_traces, | |
720 | add_traces, ctx->bt_ctx); | |
721 | } | |
722 | if (rp.flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
723 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
724 | goto retry; | |
d81179de | 725 | } |
12a91e9d | 726 | fprintf(stderr, "[error] get_data_packet: error\n"); |
6c5f6d07 | 727 | goto error; |
12a91e9d JD |
728 | case LTTNG_VIEWER_GET_PACKET_EOF: |
729 | ret = -2; | |
6c5f6d07 | 730 | goto end; |
12a91e9d JD |
731 | default: |
732 | printf_verbose("get_data_packet: unknown\n"); | |
6c5f6d07 | 733 | goto error; |
12a91e9d JD |
734 | } |
735 | ||
6c5f6d07 JD |
736 | if (len == 0) { |
737 | goto error; | |
12a91e9d JD |
738 | } |
739 | ||
740 | if (len > stream->mmap_size) { | |
741 | uint64_t new_size; | |
742 | ||
743 | new_size = max_t(uint64_t, len, stream->mmap_size << 1); | |
744 | if (pos->base_mma) { | |
745 | /* unmap old base */ | |
746 | ret = munmap_align(pos->base_mma); | |
747 | if (ret) { | |
74f97e7d | 748 | perror("[error] Unable to unmap old base"); |
12a91e9d JD |
749 | goto error; |
750 | } | |
751 | pos->base_mma = NULL; | |
752 | } | |
753 | pos->base_mma = mmap_align(new_size, | |
754 | PROT_READ | PROT_WRITE, | |
755 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); | |
756 | if (pos->base_mma == MAP_FAILED) { | |
74f97e7d | 757 | perror("[error] mmap error"); |
12a91e9d | 758 | pos->base_mma = NULL; |
12a91e9d JD |
759 | goto error; |
760 | } | |
761 | ||
762 | stream->mmap_size = new_size; | |
763 | printf_verbose("Expanding stream mmap size to %" PRIu64 " bytes\n", | |
764 | stream->mmap_size); | |
765 | } | |
766 | ||
6c5f6d07 JD |
767 | ret_len = lttng_live_recv(ctx->control_sock, |
768 | mmap_align_addr(pos->base_mma), len); | |
74f97e7d JD |
769 | if (ret_len == 0) { |
770 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
771 | goto error; |
772 | } | |
12a91e9d | 773 | if (ret_len < 0) { |
74f97e7d | 774 | perror("[error] Error receiving trace packet"); |
12a91e9d JD |
775 | goto error; |
776 | } | |
777 | assert(ret_len == len); | |
6c5f6d07 | 778 | ret = 0; |
12a91e9d | 779 | end: |
12a91e9d | 780 | return ret; |
6c5f6d07 JD |
781 | |
782 | error: | |
783 | return -1; | |
12a91e9d JD |
784 | } |
785 | ||
12a91e9d | 786 | static |
6c5f6d07 JD |
787 | int get_one_metadata_packet(struct lttng_live_ctx *ctx, |
788 | struct lttng_live_viewer_stream *metadata_stream) | |
12a91e9d JD |
789 | { |
790 | uint64_t len = 0; | |
791 | int ret; | |
792 | struct lttng_viewer_cmd cmd; | |
793 | struct lttng_viewer_get_metadata rq; | |
794 | struct lttng_viewer_metadata_packet rp; | |
12a91e9d JD |
795 | char *data = NULL; |
796 | ssize_t ret_len; | |
797 | ||
6c5f6d07 JD |
798 | if (lttng_live_should_quit()) { |
799 | ret = -1; | |
800 | goto end; | |
801 | } | |
802 | ||
803 | rq.stream_id = htobe64(metadata_stream->id); | |
12a91e9d JD |
804 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); |
805 | cmd.data_size = sizeof(rq); | |
806 | cmd.cmd_version = 0; | |
807 | ||
6c5f6d07 | 808 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
12a91e9d | 809 | if (ret_len < 0) { |
74f97e7d | 810 | perror("[error] Error sending cmd"); |
12a91e9d JD |
811 | goto error; |
812 | } | |
813 | assert(ret_len == sizeof(cmd)); | |
814 | ||
6c5f6d07 | 815 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
12a91e9d | 816 | if (ret_len < 0) { |
74f97e7d | 817 | perror("[error] Error sending get_metadata request"); |
12a91e9d JD |
818 | goto error; |
819 | } | |
820 | assert(ret_len == sizeof(rq)); | |
821 | ||
6c5f6d07 | 822 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
74f97e7d JD |
823 | if (ret_len == 0) { |
824 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
825 | goto error; |
826 | } | |
12a91e9d | 827 | if (ret_len < 0) { |
74f97e7d | 828 | perror("[error] Error receiving metadata response"); |
12a91e9d JD |
829 | goto error; |
830 | } | |
831 | assert(ret_len == sizeof(rp)); | |
832 | ||
833 | switch (be32toh(rp.status)) { | |
834 | case LTTNG_VIEWER_METADATA_OK: | |
835 | printf_verbose("get_metadata : OK\n"); | |
836 | break; | |
837 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
838 | printf_verbose("get_metadata : NO NEW\n"); | |
6c5f6d07 | 839 | ret = 0; |
12a91e9d JD |
840 | goto end; |
841 | case LTTNG_VIEWER_METADATA_ERR: | |
842 | printf_verbose("get_metadata : ERR\n"); | |
6c5f6d07 | 843 | goto error; |
12a91e9d JD |
844 | default: |
845 | printf_verbose("get_metadata : UNKNOWN\n"); | |
6c5f6d07 | 846 | goto error; |
12a91e9d JD |
847 | } |
848 | ||
849 | len = be64toh(rp.len); | |
850 | printf_verbose("Writing %" PRIu64" bytes to metadata\n", len); | |
851 | if (len <= 0) { | |
6c5f6d07 | 852 | goto error; |
12a91e9d JD |
853 | } |
854 | ||
855 | data = zmalloc(len); | |
856 | if (!data) { | |
857 | perror("relay data zmalloc"); | |
12a91e9d JD |
858 | goto error; |
859 | } | |
6c5f6d07 | 860 | ret_len = lttng_live_recv(ctx->control_sock, data, len); |
74f97e7d JD |
861 | if (ret_len == 0) { |
862 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
6c5f6d07 | 863 | goto error_free_data; |
74f97e7d | 864 | } |
12a91e9d | 865 | if (ret_len < 0) { |
74f97e7d | 866 | perror("[error] Error receiving trace packet"); |
6c5f6d07 | 867 | goto error_free_data; |
12a91e9d JD |
868 | } |
869 | assert(ret_len == len); | |
870 | ||
871 | do { | |
6c5f6d07 JD |
872 | ret_len = fwrite(data, 1, len, |
873 | metadata_stream->metadata_fp_write); | |
12a91e9d JD |
874 | } while (ret_len < 0 && errno == EINTR); |
875 | if (ret_len < 0) { | |
6c5f6d07 JD |
876 | fprintf(stderr, "[error] Writing in the metadata fp\n"); |
877 | goto error_free_data; | |
12a91e9d JD |
878 | } |
879 | assert(ret_len == len); | |
6c5f6d07 JD |
880 | metadata_stream->metadata_len += len; |
881 | free(data); | |
882 | ret = len; | |
883 | end: | |
884 | return ret; | |
12a91e9d | 885 | |
6c5f6d07 | 886 | error_free_data: |
12a91e9d | 887 | free(data); |
6c5f6d07 JD |
888 | error: |
889 | return -1; | |
890 | } | |
891 | ||
892 | /* | |
893 | * Return 0 on success, a negative value on error. | |
894 | */ | |
895 | static | |
896 | int get_new_metadata(struct lttng_live_ctx *ctx, | |
897 | struct lttng_live_viewer_stream *viewer_stream, | |
898 | char **metadata_buf) | |
899 | { | |
900 | int ret = 0; | |
901 | struct lttng_live_viewer_stream *metadata_stream; | |
902 | size_t size, len_read = 0; | |
903 | ||
904 | metadata_stream = viewer_stream->ctf_trace->metadata_stream; | |
905 | if (!metadata_stream) { | |
906 | fprintf(stderr, "[error] No metadata stream\n"); | |
907 | ret = -1; | |
908 | goto error; | |
909 | } | |
910 | metadata_stream->metadata_len = 0; | |
911 | ret = open_metadata_fp_write(metadata_stream, metadata_buf, &size); | |
912 | if (ret < 0) { | |
913 | goto error; | |
914 | } | |
915 | ||
916 | do { | |
917 | /* | |
918 | * get_one_metadata_packet returns the number of bytes | |
919 | * received, 0 when we have received everything, a | |
920 | * negative value on error. | |
921 | */ | |
922 | ret = get_one_metadata_packet(ctx, metadata_stream); | |
923 | if (ret > 0) { | |
924 | len_read += ret; | |
925 | } | |
926 | if (!len_read) { | |
927 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); | |
928 | } | |
929 | } while (ret > 0 || !len_read); | |
930 | ||
931 | if (fclose(metadata_stream->metadata_fp_write)) | |
932 | perror("fclose"); | |
933 | metadata_stream->metadata_fp_write = NULL; | |
12a91e9d | 934 | |
12a91e9d JD |
935 | error: |
936 | return ret; | |
937 | } | |
938 | ||
6c5f6d07 JD |
939 | /* |
940 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
941 | */ | |
942 | static | |
943 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
944 | struct packet_index *pindex) | |
945 | { | |
946 | assert(lindex); | |
947 | assert(pindex); | |
948 | ||
949 | pindex->offset = be64toh(lindex->offset); | |
950 | pindex->packet_size = be64toh(lindex->packet_size); | |
951 | pindex->content_size = be64toh(lindex->content_size); | |
952 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
953 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
954 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
955 | } | |
956 | ||
12a91e9d JD |
957 | /* |
958 | * Get one index for a stream. | |
959 | * | |
960 | * Returns 0 on success or a negative value on error. | |
961 | */ | |
962 | static | |
963 | int get_next_index(struct lttng_live_ctx *ctx, | |
964 | struct lttng_live_viewer_stream *viewer_stream, | |
6c5f6d07 | 965 | struct packet_index *index, uint64_t *stream_id) |
12a91e9d JD |
966 | { |
967 | struct lttng_viewer_cmd cmd; | |
968 | struct lttng_viewer_get_next_index rq; | |
12a91e9d | 969 | int ret; |
12a91e9d | 970 | ssize_t ret_len; |
6c5f6d07 | 971 | struct lttng_viewer_index *rp = &viewer_stream->current_index; |
12a91e9d JD |
972 | |
973 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
974 | cmd.data_size = sizeof(rq); | |
975 | cmd.cmd_version = 0; | |
976 | ||
977 | memset(&rq, 0, sizeof(rq)); | |
978 | rq.stream_id = htobe64(viewer_stream->id); | |
979 | ||
980 | retry: | |
6c5f6d07 JD |
981 | if (lttng_live_should_quit()) { |
982 | ret = -1; | |
983 | goto end; | |
984 | } | |
985 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); | |
12a91e9d | 986 | if (ret_len < 0) { |
74f97e7d | 987 | perror("[error] Error sending cmd"); |
12a91e9d JD |
988 | goto error; |
989 | } | |
990 | assert(ret_len == sizeof(cmd)); | |
991 | ||
6c5f6d07 | 992 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
12a91e9d | 993 | if (ret_len < 0) { |
74f97e7d | 994 | perror("[error] Error sending get_next_index request"); |
12a91e9d JD |
995 | goto error; |
996 | } | |
997 | assert(ret_len == sizeof(rq)); | |
998 | ||
6c5f6d07 | 999 | ret_len = lttng_live_recv(ctx->control_sock, rp, sizeof(*rp)); |
74f97e7d JD |
1000 | if (ret_len == 0) { |
1001 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
1002 | goto error; |
1003 | } | |
12a91e9d | 1004 | if (ret_len < 0) { |
74f97e7d | 1005 | perror("[error] Error receiving index response"); |
12a91e9d JD |
1006 | goto error; |
1007 | } | |
6c5f6d07 | 1008 | assert(ret_len == sizeof(*rp)); |
12a91e9d | 1009 | |
6c5f6d07 | 1010 | rp->flags = be32toh(rp->flags); |
12a91e9d | 1011 | |
6c5f6d07 | 1012 | switch (be32toh(rp->status)) { |
12a91e9d JD |
1013 | case LTTNG_VIEWER_INDEX_INACTIVE: |
1014 | printf_verbose("get_next_index: inactive\n"); | |
1015 | memset(index, 0, sizeof(struct packet_index)); | |
6c5f6d07 JD |
1016 | index->ts_cycles.timestamp_end = be64toh(rp->timestamp_end); |
1017 | *stream_id = be64toh(rp->stream_id); | |
12a91e9d JD |
1018 | break; |
1019 | case LTTNG_VIEWER_INDEX_OK: | |
1020 | printf_verbose("get_next_index: Ok, need metadata update : %u\n", | |
6c5f6d07 JD |
1021 | rp->flags & LTTNG_VIEWER_FLAG_NEW_METADATA); |
1022 | lttng_index_to_packet_index(rp, index); | |
1023 | *stream_id = be64toh(rp->stream_id); | |
1024 | viewer_stream->data_pending = 1; | |
1025 | ||
1026 | if (rp->flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
1027 | ret = append_metadata(ctx, viewer_stream); | |
1028 | if (ret) | |
12a91e9d | 1029 | goto error; |
12a91e9d | 1030 | } |
6c5f6d07 JD |
1031 | if (rp->flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { |
1032 | printf_verbose("get_next_index: need new streams\n"); | |
d81179de JD |
1033 | ret = ask_new_streams(ctx); |
1034 | if (ret < 0) | |
1035 | goto error; | |
6c5f6d07 JD |
1036 | else if (ret > 0) |
1037 | g_hash_table_foreach(ctx->session->ctf_traces, | |
1038 | add_traces, ctx->bt_ctx); | |
d81179de | 1039 | } |
12a91e9d JD |
1040 | break; |
1041 | case LTTNG_VIEWER_INDEX_RETRY: | |
1042 | printf_verbose("get_next_index: retry\n"); | |
6c5f6d07 | 1043 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); |
12a91e9d JD |
1044 | goto retry; |
1045 | case LTTNG_VIEWER_INDEX_HUP: | |
1046 | printf_verbose("get_next_index: stream hung up\n"); | |
1047 | viewer_stream->id = -1ULL; | |
12a91e9d | 1048 | index->offset = EOF; |
d81179de | 1049 | ctx->session->stream_count--; |
12a91e9d JD |
1050 | break; |
1051 | case LTTNG_VIEWER_INDEX_ERR: | |
1052 | fprintf(stderr, "[error] get_next_index: error\n"); | |
12a91e9d JD |
1053 | goto error; |
1054 | default: | |
1055 | fprintf(stderr, "[error] get_next_index: unkwown value\n"); | |
12a91e9d JD |
1056 | goto error; |
1057 | } | |
12a91e9d | 1058 | ret = 0; |
6c5f6d07 JD |
1059 | end: |
1060 | return ret; | |
12a91e9d JD |
1061 | |
1062 | error: | |
6c5f6d07 JD |
1063 | return -1; |
1064 | } | |
1065 | ||
1066 | static | |
1067 | void read_packet_header(struct ctf_stream_pos *pos, | |
1068 | struct ctf_file_stream *file_stream) | |
1069 | { | |
1070 | int ret; | |
1071 | ||
1072 | /* update trace_packet_header and stream_packet_context */ | |
1073 | if (!(pos->prot & PROT_WRITE) && | |
1074 | file_stream->parent.trace_packet_header) { | |
1075 | /* Read packet header */ | |
1076 | ret = generic_rw(&pos->parent, | |
1077 | &file_stream->parent.trace_packet_header->p); | |
1078 | if (ret) { | |
1079 | pos->offset = EOF; | |
1080 | fprintf(stderr, "[error] trace packet " | |
1081 | "header read failed\n"); | |
1082 | goto end; | |
1083 | } | |
1084 | } | |
1085 | if (!(pos->prot & PROT_WRITE) && | |
1086 | file_stream->parent.stream_packet_context) { | |
1087 | /* Read packet context */ | |
1088 | ret = generic_rw(&pos->parent, | |
1089 | &file_stream->parent.stream_packet_context->p); | |
1090 | if (ret) { | |
1091 | pos->offset = EOF; | |
1092 | fprintf(stderr, "[error] stream packet " | |
1093 | "context read failed\n"); | |
1094 | goto end; | |
1095 | } | |
1096 | } | |
1097 | pos->data_offset = pos->offset; | |
1098 | ||
1099 | end: | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | /* | |
1104 | * Handle the seek parameters. | |
1105 | * Returns 0 if the packet_seek can continue, a positive value to | |
1106 | * cleanly exit the packet_seek, a negative value on error. | |
1107 | */ | |
1108 | static | |
1109 | int handle_seek_position(size_t index, int whence, | |
1110 | struct lttng_live_viewer_stream *viewer_stream, | |
1111 | struct ctf_stream_pos *pos, | |
1112 | struct ctf_file_stream *file_stream) | |
1113 | { | |
1114 | int ret; | |
1115 | ||
1116 | switch (whence) { | |
1117 | case SEEK_CUR: | |
1118 | ret = 0; | |
1119 | goto end; | |
1120 | case SEEK_SET: | |
1121 | /* | |
1122 | * We only allow to seek to 0. | |
1123 | */ | |
1124 | if (index != 0) { | |
1125 | fprintf(stderr, "[error] Arbitrary seek in lttng-live " | |
1126 | "trace not supported\n"); | |
1127 | pos->offset = EOF; | |
1128 | ret = -1; | |
1129 | goto end; | |
1130 | } | |
1131 | ||
1132 | ret = 0; | |
1133 | goto end; | |
1134 | ||
1135 | default: | |
1136 | fprintf(stderr, "[error] Invalid seek parameter\n"); | |
1137 | assert(0); | |
1138 | } | |
1139 | ||
1140 | end: | |
12a91e9d JD |
1141 | return ret; |
1142 | } | |
1143 | ||
d81179de | 1144 | static |
12a91e9d JD |
1145 | void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, size_t index, |
1146 | int whence) | |
1147 | { | |
1148 | struct ctf_stream_pos *pos; | |
1149 | struct ctf_file_stream *file_stream; | |
3bac1a1f | 1150 | struct packet_index *prev_index = NULL, *cur_index; |
12a91e9d JD |
1151 | struct lttng_live_viewer_stream *viewer_stream; |
1152 | struct lttng_live_session *session; | |
6c5f6d07 | 1153 | uint64_t stream_id = -1ULL; |
12a91e9d JD |
1154 | int ret; |
1155 | ||
12a91e9d JD |
1156 | pos = ctf_pos(stream_pos); |
1157 | file_stream = container_of(pos, struct ctf_file_stream, pos); | |
1158 | viewer_stream = (struct lttng_live_viewer_stream *) pos->priv; | |
1159 | session = viewer_stream->session; | |
1160 | ||
6c5f6d07 JD |
1161 | ret = handle_seek_position(index, whence, viewer_stream, pos, |
1162 | file_stream); | |
1163 | if (ret != 0) { | |
1164 | return; | |
1165 | } | |
1166 | ||
1167 | retry: | |
3bac1a1f JD |
1168 | switch (pos->packet_index->len) { |
1169 | case 0: | |
1170 | g_array_set_size(pos->packet_index, 1); | |
1171 | cur_index = &g_array_index(pos->packet_index, | |
1172 | struct packet_index, 0); | |
1173 | break; | |
1174 | case 1: | |
1175 | g_array_set_size(pos->packet_index, 2); | |
1176 | prev_index = &g_array_index(pos->packet_index, | |
1177 | struct packet_index, 0); | |
1178 | cur_index = &g_array_index(pos->packet_index, | |
1179 | struct packet_index, 1); | |
1180 | break; | |
1181 | case 2: | |
1182 | g_array_index(pos->packet_index, | |
1183 | struct packet_index, 0) = | |
1184 | g_array_index(pos->packet_index, | |
1185 | struct packet_index, 1); | |
1186 | prev_index = &g_array_index(pos->packet_index, | |
1187 | struct packet_index, 0); | |
1188 | cur_index = &g_array_index(pos->packet_index, | |
1189 | struct packet_index, 1); | |
1190 | break; | |
1191 | default: | |
1192 | abort(); | |
1193 | break; | |
1194 | } | |
1195 | ||
6c5f6d07 JD |
1196 | if (viewer_stream->data_pending) { |
1197 | lttng_index_to_packet_index(&viewer_stream->current_index, cur_index); | |
1198 | } else { | |
1199 | printf_verbose("get_next_index for stream %" PRIu64 "\n", viewer_stream->id); | |
1200 | ret = get_next_index(session->ctx, viewer_stream, cur_index, &stream_id); | |
1201 | if (ret < 0) { | |
1202 | pos->offset = EOF; | |
1203 | if (!lttng_live_should_quit()) { | |
1204 | fprintf(stderr, "[error] get_next_index failed\n"); | |
1205 | } | |
1206 | return; | |
1207 | } | |
1208 | printf_verbose("Index received : packet_size : %" PRIu64 | |
1209 | ", offset %" PRIu64 ", content_size %" PRIu64 | |
1210 | ", timestamp_end : %" PRIu64 "\n", | |
1211 | cur_index->packet_size, cur_index->offset, | |
1212 | cur_index->content_size, | |
1213 | cur_index->ts_cycles.timestamp_end); | |
1214 | ||
1215 | } | |
1216 | ||
1217 | /* | |
1218 | * On the first time we receive an index, the stream_id needs to | |
1219 | * be set for the stream in order to use it, we don't want any | |
1220 | * data at this stage. | |
1221 | */ | |
1222 | if (file_stream->parent.stream_id == -1ULL) { | |
1223 | /* | |
1224 | * Warning: with lttng-tools < 2.4.2, the beacon does not | |
1225 | * contain the real stream ID, it is memset to 0, so this | |
1226 | * might create a problem when a session has multiple | |
1227 | * channels. We can't detect it at this stage, lttng-tools | |
1228 | * has to be upgraded to fix this problem. | |
1229 | */ | |
1230 | printf_verbose("Assigning stream_id %" PRIu64 "\n", | |
1231 | stream_id); | |
1232 | file_stream->parent.stream_id = stream_id; | |
1233 | viewer_stream->ctf_stream_id = stream_id; | |
1234 | ||
12a91e9d JD |
1235 | return; |
1236 | } | |
1237 | ||
3bac1a1f JD |
1238 | pos->packet_size = cur_index->packet_size; |
1239 | pos->content_size = cur_index->content_size; | |
12a91e9d | 1240 | pos->mmap_base_offset = 0; |
3bac1a1f | 1241 | if (cur_index->offset == EOF) { |
12a91e9d JD |
1242 | pos->offset = EOF; |
1243 | } else { | |
1244 | pos->offset = 0; | |
1245 | } | |
1246 | ||
3bac1a1f | 1247 | if (cur_index->content_size == 0) { |
6c5f6d07 JD |
1248 | if (file_stream->parent.stream_class) { |
1249 | file_stream->parent.cycles_timestamp = | |
3bac1a1f | 1250 | cur_index->ts_cycles.timestamp_end; |
6c5f6d07 JD |
1251 | file_stream->parent.real_timestamp = ctf_get_real_timestamp( |
1252 | &file_stream->parent, | |
1253 | cur_index->ts_cycles.timestamp_end); | |
1254 | } | |
12a91e9d | 1255 | } else { |
6c5f6d07 JD |
1256 | if (file_stream->parent.stream_class) { |
1257 | /* Convert the timestamps and append to the real_index. */ | |
1258 | cur_index->ts_real.timestamp_begin = ctf_get_real_timestamp( | |
1259 | &file_stream->parent, | |
1260 | cur_index->ts_cycles.timestamp_begin); | |
1261 | cur_index->ts_real.timestamp_end = ctf_get_real_timestamp( | |
1262 | &file_stream->parent, | |
1263 | cur_index->ts_cycles.timestamp_end); | |
1264 | } | |
3bac1a1f JD |
1265 | |
1266 | ctf_update_current_packet_index(&file_stream->parent, | |
1267 | prev_index, cur_index); | |
1268 | ||
1269 | file_stream->parent.cycles_timestamp = | |
1270 | cur_index->ts_cycles.timestamp_begin; | |
1271 | file_stream->parent.real_timestamp = | |
1272 | cur_index->ts_real.timestamp_begin; | |
12a91e9d JD |
1273 | } |
1274 | ||
1275 | if (pos->packet_size == 0 || pos->offset == EOF) { | |
1276 | goto end; | |
1277 | } | |
1278 | ||
1279 | printf_verbose("get_data_packet for stream %" PRIu64 "\n", | |
1280 | viewer_stream->id); | |
1281 | ret = get_data_packet(session->ctx, pos, viewer_stream, | |
6c5f6d07 | 1282 | cur_index->offset, |
3bac1a1f | 1283 | cur_index->packet_size / CHAR_BIT); |
12a91e9d JD |
1284 | if (ret == -2) { |
1285 | goto retry; | |
1286 | } else if (ret < 0) { | |
1287 | pos->offset = EOF; | |
6c5f6d07 JD |
1288 | if (!lttng_live_should_quit()) { |
1289 | fprintf(stderr, "[error] get_data_packet failed\n"); | |
1290 | } | |
12a91e9d JD |
1291 | return; |
1292 | } | |
6c5f6d07 | 1293 | viewer_stream->data_pending = 0; |
12a91e9d | 1294 | |
6c5f6d07 | 1295 | read_packet_header(pos, file_stream); |
12a91e9d JD |
1296 | |
1297 | end: | |
1298 | return; | |
1299 | } | |
1300 | ||
d81179de JD |
1301 | int lttng_live_create_viewer_session(struct lttng_live_ctx *ctx) |
1302 | { | |
1303 | struct lttng_viewer_cmd cmd; | |
1304 | struct lttng_viewer_create_session_response resp; | |
1305 | int ret; | |
1306 | ssize_t ret_len; | |
1307 | ||
6c5f6d07 JD |
1308 | if (lttng_live_should_quit()) { |
1309 | ret = -1; | |
1310 | goto end; | |
1311 | } | |
1312 | ||
d81179de JD |
1313 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); |
1314 | cmd.data_size = 0; | |
1315 | cmd.cmd_version = 0; | |
1316 | ||
6c5f6d07 | 1317 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
d81179de | 1318 | if (ret_len < 0) { |
74f97e7d | 1319 | perror("[error] Error sending cmd"); |
d81179de JD |
1320 | goto error; |
1321 | } | |
1322 | assert(ret_len == sizeof(cmd)); | |
1323 | ||
6c5f6d07 | 1324 | ret_len = lttng_live_recv(ctx->control_sock, &resp, sizeof(resp)); |
74f97e7d JD |
1325 | if (ret_len == 0) { |
1326 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
1327 | goto error; |
1328 | } | |
d81179de | 1329 | if (ret_len < 0) { |
74f97e7d | 1330 | perror("[error] Error receiving create session reply"); |
d81179de JD |
1331 | goto error; |
1332 | } | |
1333 | assert(ret_len == sizeof(resp)); | |
1334 | ||
1335 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
1336 | fprintf(stderr, "[error] Error creating viewer session\n"); | |
d81179de JD |
1337 | goto error; |
1338 | } | |
1339 | ret = 0; | |
6c5f6d07 JD |
1340 | end: |
1341 | return ret; | |
d81179de JD |
1342 | |
1343 | error: | |
6c5f6d07 | 1344 | return -1; |
d81179de JD |
1345 | } |
1346 | ||
1347 | static | |
1348 | int del_traces(gpointer key, gpointer value, gpointer user_data) | |
12a91e9d JD |
1349 | { |
1350 | struct bt_context *bt_ctx = user_data; | |
1351 | struct lttng_live_ctf_trace *trace = value; | |
1352 | int ret; | |
1353 | ||
1354 | ret = bt_context_remove_trace(bt_ctx, trace->trace_id); | |
1355 | if (ret < 0) | |
1356 | fprintf(stderr, "[error] removing trace from context\n"); | |
1357 | ||
1358 | /* remove the key/value pair from the HT. */ | |
1359 | return 1; | |
1360 | } | |
1361 | ||
d81179de JD |
1362 | static |
1363 | void add_traces(gpointer key, gpointer value, gpointer user_data) | |
12a91e9d | 1364 | { |
6c5f6d07 | 1365 | int i, ret; |
12a91e9d JD |
1366 | struct bt_context *bt_ctx = user_data; |
1367 | struct lttng_live_ctf_trace *trace = value; | |
1368 | struct lttng_live_viewer_stream *stream; | |
1369 | struct bt_mmap_stream *new_mmap_stream; | |
1370 | struct bt_mmap_stream_list mmap_list; | |
1371 | struct lttng_live_ctx *ctx = NULL; | |
6c5f6d07 JD |
1372 | struct bt_trace_descriptor *td; |
1373 | struct bt_trace_handle *handle; | |
12a91e9d | 1374 | |
d81179de JD |
1375 | /* |
1376 | * We don't know how many streams we will receive for a trace, so | |
1377 | * once we are done receiving the traces, we add all the traces | |
1378 | * received to the bt_context. | |
1379 | * We can receive streams during the attach command or the | |
1380 | * get_new_streams, so we have to make sure not to add multiple | |
1381 | * times the same traces. | |
1382 | * If a trace is already in the context, we just skip this function. | |
1383 | */ | |
1384 | if (trace->in_use) | |
1385 | return; | |
1386 | ||
12a91e9d JD |
1387 | BT_INIT_LIST_HEAD(&mmap_list.head); |
1388 | ||
1389 | for (i = 0; i < trace->streams->len; i++) { | |
1390 | stream = g_ptr_array_index(trace->streams, i); | |
1391 | ctx = stream->session->ctx; | |
1392 | ||
1393 | if (!stream->metadata_flag) { | |
1394 | new_mmap_stream = zmalloc(sizeof(struct bt_mmap_stream)); | |
1395 | new_mmap_stream->priv = (void *) stream; | |
1396 | new_mmap_stream->fd = -1; | |
1397 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); | |
1398 | } else { | |
6c5f6d07 JD |
1399 | char *metadata_buf = NULL; |
1400 | ||
12a91e9d | 1401 | /* Get all possible metadata before starting */ |
6c5f6d07 JD |
1402 | ret = get_new_metadata(ctx, stream, &metadata_buf); |
1403 | if (ret) { | |
1404 | free(metadata_buf); | |
1405 | goto end_free; | |
1406 | } | |
1407 | if (!stream->metadata_len) { | |
1408 | fprintf(stderr, "[error] empty metadata\n"); | |
1409 | ret = -1; | |
1410 | free(metadata_buf); | |
1411 | goto end_free; | |
1412 | } | |
1413 | ||
1414 | trace->metadata_fp = babeltrace_fmemopen(metadata_buf, | |
1415 | stream->metadata_len, "rb"); | |
1416 | if (!trace->metadata_fp) { | |
1417 | perror("Metadata fmemopen2"); | |
1418 | ret = -1; | |
1419 | free(metadata_buf); | |
1420 | goto end_free; | |
1421 | } | |
12a91e9d JD |
1422 | } |
1423 | } | |
1424 | ||
1425 | if (!trace->metadata_fp) { | |
1426 | fprintf(stderr, "[error] No metadata stream opened\n"); | |
1427 | goto end_free; | |
1428 | } | |
1429 | ||
1430 | ret = bt_context_add_trace(bt_ctx, NULL, "ctf", | |
1431 | ctf_live_packet_seek, &mmap_list, trace->metadata_fp); | |
1432 | if (ret < 0) { | |
1433 | fprintf(stderr, "[error] Error adding trace\n"); | |
1434 | goto end_free; | |
1435 | } | |
6c5f6d07 | 1436 | trace->metadata_stream->metadata_len = 0; |
d81179de | 1437 | |
6c5f6d07 JD |
1438 | handle = (struct bt_trace_handle *) g_hash_table_lookup( |
1439 | bt_ctx->trace_handles, | |
1440 | (gpointer) (unsigned long) ret); | |
1441 | td = handle->td; | |
1442 | trace->handle = handle; | |
d81179de | 1443 | if (bt_ctx->current_iterator) { |
d81179de JD |
1444 | bt_iter_add_trace(bt_ctx->current_iterator, td); |
1445 | } | |
1446 | ||
12a91e9d | 1447 | trace->trace_id = ret; |
d81179de | 1448 | trace->in_use = 1; |
12a91e9d JD |
1449 | |
1450 | goto end; | |
1451 | ||
1452 | end_free: | |
1453 | bt_context_put(bt_ctx); | |
1454 | end: | |
1455 | return; | |
1456 | } | |
1457 | ||
6c5f6d07 JD |
1458 | /* |
1459 | * Request new streams for a session. | |
1460 | * Returns the number of streams received or a negative value on error. | |
1461 | */ | |
d81179de | 1462 | int lttng_live_get_new_streams(struct lttng_live_ctx *ctx, uint64_t id) |
12a91e9d | 1463 | { |
d81179de JD |
1464 | struct lttng_viewer_cmd cmd; |
1465 | struct lttng_viewer_new_streams_request rq; | |
1466 | struct lttng_viewer_new_streams_response rp; | |
1467 | struct lttng_viewer_stream stream; | |
6c5f6d07 | 1468 | int ret, i, nb_streams = 0; |
d81179de JD |
1469 | ssize_t ret_len; |
1470 | uint32_t stream_count; | |
12a91e9d | 1471 | |
6c5f6d07 JD |
1472 | if (lttng_live_should_quit()) { |
1473 | ret = -1; | |
1474 | goto end; | |
1475 | } | |
1476 | ||
d81179de JD |
1477 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); |
1478 | cmd.data_size = sizeof(rq); | |
1479 | cmd.cmd_version = 0; | |
1480 | ||
1481 | memset(&rq, 0, sizeof(rq)); | |
1482 | rq.session_id = htobe64(id); | |
1483 | ||
6c5f6d07 | 1484 | ret_len = lttng_live_send(ctx->control_sock, &cmd, sizeof(cmd)); |
d81179de | 1485 | if (ret_len < 0) { |
74f97e7d | 1486 | perror("[error] Error sending cmd"); |
d81179de JD |
1487 | goto error; |
1488 | } | |
1489 | assert(ret_len == sizeof(cmd)); | |
1490 | ||
6c5f6d07 | 1491 | ret_len = lttng_live_send(ctx->control_sock, &rq, sizeof(rq)); |
d81179de | 1492 | if (ret_len < 0) { |
74f97e7d | 1493 | perror("[error] Error sending get_new_streams request"); |
d81179de JD |
1494 | goto error; |
1495 | } | |
1496 | assert(ret_len == sizeof(rq)); | |
1497 | ||
6c5f6d07 | 1498 | ret_len = lttng_live_recv(ctx->control_sock, &rp, sizeof(rp)); |
74f97e7d JD |
1499 | if (ret_len == 0) { |
1500 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
1501 | goto error; |
1502 | } | |
d81179de | 1503 | if (ret_len < 0) { |
74f97e7d | 1504 | perror("[error] Error receiving get_new_streams response"); |
d81179de JD |
1505 | goto error; |
1506 | } | |
1507 | assert(ret_len == sizeof(rp)); | |
1508 | ||
1509 | switch(be32toh(rp.status)) { | |
1510 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1511 | break; | |
1512 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1513 | ret = 0; | |
1514 | goto end; | |
1515 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1516 | ret = -LTTNG_VIEWER_NEW_STREAMS_HUP; | |
1517 | goto end; | |
1518 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
1519 | fprintf(stderr, "[error] get_new_streams error\n"); | |
6c5f6d07 | 1520 | goto error; |
d81179de JD |
1521 | default: |
1522 | fprintf(stderr, "[error] Unknown return code %u\n", | |
1523 | be32toh(rp.status)); | |
6c5f6d07 | 1524 | goto error; |
12a91e9d JD |
1525 | } |
1526 | ||
d81179de JD |
1527 | stream_count = be32toh(rp.streams_count); |
1528 | ctx->session->stream_count += stream_count; | |
12a91e9d | 1529 | /* |
d81179de JD |
1530 | * When the session is created but not started, we do an active wait |
1531 | * until it starts. It allows the viewer to start processing the trace | |
1532 | * as soon as the session starts. | |
12a91e9d | 1533 | */ |
d81179de JD |
1534 | if (ctx->session->stream_count == 0) { |
1535 | ret = 0; | |
1536 | goto end; | |
1537 | } | |
1538 | printf_verbose("Waiting for %" PRIu64 " streams:\n", | |
1539 | ctx->session->stream_count); | |
1540 | ctx->session->streams = g_new0(struct lttng_live_viewer_stream, | |
1541 | ctx->session->stream_count); | |
1542 | for (i = 0; i < stream_count; i++) { | |
6c5f6d07 | 1543 | ret_len = lttng_live_recv(ctx->control_sock, &stream, sizeof(stream)); |
74f97e7d JD |
1544 | if (ret_len == 0) { |
1545 | fprintf(stderr, "[error] Remote side has closed connection\n"); | |
74f97e7d JD |
1546 | goto error; |
1547 | } | |
d81179de | 1548 | if (ret_len < 0) { |
74f97e7d | 1549 | perror("[error] Error receiving stream"); |
d81179de JD |
1550 | goto error; |
1551 | } | |
1552 | assert(ret_len == sizeof(stream)); | |
1553 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; | |
1554 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
1555 | ||
1556 | printf_verbose(" stream %" PRIu64 " : %s/%s\n", | |
1557 | be64toh(stream.id), stream.path_name, | |
1558 | stream.channel_name); | |
1559 | ctx->session->streams[i].id = be64toh(stream.id); | |
1560 | ctx->session->streams[i].session = ctx->session; | |
1561 | ||
d81179de | 1562 | ctx->session->streams[i].mmap_size = 0; |
6c5f6d07 | 1563 | ctx->session->streams[i].ctf_stream_id = -1ULL; |
d81179de JD |
1564 | |
1565 | if (be32toh(stream.metadata_flag)) { | |
d81179de | 1566 | ctx->session->streams[i].metadata_flag = 1; |
d81179de JD |
1567 | } |
1568 | ret = lttng_live_ctf_trace_assign(&ctx->session->streams[i], | |
1569 | be64toh(stream.ctf_trace_id)); | |
1570 | if (ret < 0) { | |
1571 | goto error; | |
1572 | } | |
6c5f6d07 | 1573 | nb_streams++; |
d81179de JD |
1574 | |
1575 | } | |
6c5f6d07 | 1576 | ret = nb_streams; |
d81179de | 1577 | end: |
d81179de | 1578 | return ret; |
6c5f6d07 JD |
1579 | |
1580 | error: | |
1581 | return -1; | |
d81179de | 1582 | } |
12a91e9d | 1583 | |
6c5f6d07 | 1584 | int lttng_live_read(struct lttng_live_ctx *ctx) |
d81179de JD |
1585 | { |
1586 | int ret, i; | |
1587 | #if 0 | |
1588 | struct bt_ctf_iter *iter; | |
1589 | const struct bt_ctf_event *event; | |
1590 | struct bt_iter_pos begin_pos; | |
1591 | struct bt_trace_descriptor *td_write; | |
1592 | struct bt_format *fmt_write; | |
1593 | struct ctf_text_stream_pos *sout; | |
1594 | #endif | |
1595 | uint64_t id; | |
12a91e9d | 1596 | |
d81179de JD |
1597 | ctx->bt_ctx = bt_context_create(); |
1598 | if (!ctx->bt_ctx) { | |
1599 | fprintf(stderr, "[error] bt_context_create allocation\n"); | |
1600 | goto end; | |
1601 | } | |
1602 | ||
1603 | #if 0 | |
1604 | fmt_write = bt_lookup_format(g_quark_from_static_string("text")); | |
1605 | if (!fmt_write) { | |
1606 | fprintf(stderr, "[error] ctf-text error\n"); | |
1607 | goto end; | |
1608 | } | |
1609 | ||
1610 | td_write = fmt_write->open_trace(NULL, O_RDWR, NULL, NULL); | |
1611 | if (!td_write) { | |
1612 | fprintf(stderr, "[error] Error opening output trace\n"); | |
1613 | goto end_free; | |
1614 | } | |
1615 | ||
1616 | sout = container_of(td_write, struct ctf_text_stream_pos, | |
1617 | trace_descriptor); | |
6c5f6d07 | 1618 | if (!sout->parent.event_cb) { |
d81179de | 1619 | goto end_free; |
6c5f6d07 | 1620 | } |
d81179de JD |
1621 | #endif |
1622 | ||
1623 | ret = lttng_live_create_viewer_session(ctx); | |
1624 | if (ret < 0) { | |
1625 | goto end_free; | |
1626 | } | |
1627 | ||
1628 | for (i = 0; i < ctx->session_ids->len; i++) { | |
1629 | id = g_array_index(ctx->session_ids, uint64_t, i); | |
1630 | printf_verbose("Attaching to session %lu\n", id); | |
1631 | ret = lttng_live_attach_session(ctx, id); | |
1632 | printf_verbose("Attaching session returns %d\n", ret); | |
1633 | if (ret < 0) { | |
1634 | if (ret == -LTTNG_VIEWER_ATTACH_UNK) { | |
1635 | fprintf(stderr, "[error] Unknown session ID\n"); | |
1636 | } | |
1637 | goto end_free; | |
1638 | } | |
1639 | } | |
1640 | ||
1641 | /* | |
1642 | * As long as the session is active, we try to get new streams. | |
1643 | */ | |
1644 | #if 0 | |
1645 | for (;;) { | |
1646 | int flags; | |
1647 | #endif | |
6c5f6d07 JD |
1648 | if (lttng_live_should_quit()) { |
1649 | ret = 0; | |
1650 | goto end_free; | |
1651 | } | |
d81179de JD |
1652 | |
1653 | while (!ctx->session->stream_count) { | |
6c5f6d07 JD |
1654 | if (lttng_live_should_quit() |
1655 | || ctx->session_ids->len == 0) { | |
1656 | ret = 0; | |
d81179de | 1657 | goto end_free; |
6c5f6d07 | 1658 | } |
d81179de | 1659 | ret = ask_new_streams(ctx); |
6c5f6d07 | 1660 | if (ret < 0) { |
d81179de | 1661 | goto end_free; |
6c5f6d07 JD |
1662 | } |
1663 | if (!ctx->session->stream_count) { | |
1664 | (void) poll(NULL, 0, ACTIVE_POLL_DELAY); | |
1665 | } | |
d81179de JD |
1666 | } |
1667 | ||
1668 | g_hash_table_foreach(ctx->session->ctf_traces, add_traces, | |
1669 | ctx->bt_ctx); | |
1670 | ||
1671 | #if 0 | |
1672 | begin_pos.type = BT_SEEK_BEGIN; | |
1673 | iter = bt_ctf_iter_create(ctx->bt_ctx, &begin_pos, NULL); | |
1674 | if (!iter) { | |
6c5f6d07 JD |
1675 | if (lttng_live_should_quit()) { |
1676 | ret = 0; | |
1677 | goto end; | |
1678 | } | |
d81179de JD |
1679 | fprintf(stderr, "[error] Iterator creation error\n"); |
1680 | goto end; | |
1681 | } | |
1682 | ||
1683 | for (;;) { | |
6c5f6d07 JD |
1684 | if (lttng_live_should_quit()) { |
1685 | ret = 0; | |
1686 | goto end_free; | |
1687 | } | |
d81179de JD |
1688 | event = bt_ctf_iter_read_event_flags(iter, &flags); |
1689 | if (!(flags & BT_ITER_FLAG_RETRY)) { | |
1690 | if (!event) { | |
1691 | /* End of trace */ | |
1692 | break; | |
1693 | } | |
1694 | ret = sout->parent.event_cb(&sout->parent, | |
1695 | event->parent->stream); | |
1696 | if (ret) { | |
1697 | fprintf(stderr, "[error] Writing " | |
1698 | "event failed.\n"); | |
1699 | goto end_free; | |
1700 | } | |
1701 | } | |
1702 | ret = bt_iter_next(bt_ctf_get_iter(iter)); | |
1703 | if (ret < 0) { | |
1704 | goto end_free; | |
1705 | } | |
1706 | } | |
1707 | bt_ctf_iter_destroy(iter); | |
1708 | #endif | |
1709 | ret = check_requirements(ctx->bt_ctx); | |
8fe4d0cf | 1710 | if (ret < 0 && !valid_trace) { |
12a91e9d JD |
1711 | fprintf(stderr, "[error] some mandatory contexts " |
1712 | "were missing, exiting.\n"); | |
1713 | goto end; | |
1714 | } | |
1715 | ||
1716 | if (!opt_textdump) { | |
ec016cb4 | 1717 | #ifdef HAVE_LIBNCURSES |
12a91e9d JD |
1718 | pthread_create(&display_thread, NULL, ncurses_display, |
1719 | (void *) NULL); | |
1720 | pthread_create(&timer_thread, NULL, refresh_thread, | |
1721 | (void *) NULL); | |
ec016cb4 JD |
1722 | #else |
1723 | printf("Ncurses support not compiled, please install " | |
1724 | "the missing dependencies and recompile\n"); | |
1725 | goto end_free; | |
1726 | #endif | |
12a91e9d | 1727 | } |
d81179de JD |
1728 | iter_trace(ctx->bt_ctx); |
1729 | g_hash_table_foreach_remove(ctx->session->ctf_traces, | |
1730 | del_traces, ctx->bt_ctx); | |
1731 | ctx->session->stream_count = 0; | |
1732 | #if 0 | |
1733 | } | |
1734 | #endif | |
12a91e9d JD |
1735 | |
1736 | end_free: | |
d81179de | 1737 | bt_context_put(ctx->bt_ctx); |
12a91e9d | 1738 | end: |
6c5f6d07 JD |
1739 | ret = 0; |
1740 | if (lttng_live_should_quit()) { | |
1741 | ret = 0; | |
1742 | } | |
1743 | return ret; | |
12a91e9d | 1744 | } |