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