Commit | Line | Data |
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c39c72ee | 1 | /* Copyright (C) 2009 Pierre-Marc Fournier |
1f8b0dff | 2 | * |
c39c72ee PMF |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
1f8b0dff | 7 | * |
c39c72ee | 8 | * This library is distributed in the hope that it will be useful, |
1f8b0dff | 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
c39c72ee PMF |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
1f8b0dff | 12 | * |
c39c72ee PMF |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
1f8b0dff PMF |
16 | */ |
17 | ||
3796af9b PMF |
18 | #define _GNU_SOURCE |
19 | ||
20 | #include <sys/types.h> | |
cd226f25 | 21 | #include <sys/stat.h> |
3796af9b | 22 | #include <sys/shm.h> |
688760ef PMF |
23 | #include <fcntl.h> |
24 | #include <unistd.h> | |
3a7b90de | 25 | #include <pthread.h> |
a3cdd4a7 | 26 | #include <signal.h> |
3796af9b PMF |
27 | |
28 | #include <stdlib.h> | |
29 | #include <stdio.h> | |
30 | #include <string.h> | |
a3cdd4a7 PMF |
31 | #include <errno.h> |
32 | #include <assert.h> | |
cd226f25 | 33 | #include <getopt.h> |
3796af9b | 34 | |
0b0cd937 | 35 | #include "ustd.h" |
3796af9b PMF |
36 | #include "localerr.h" |
37 | #include "ustcomm.h" | |
8bf5ab2d | 38 | #include "share.h" |
3796af9b | 39 | |
3a7b90de PMF |
40 | /* return value: 0 = subbuffer is finished, it won't produce data anymore |
41 | * 1 = got subbuffer successfully | |
42 | * <0 = error | |
43 | */ | |
3796af9b | 44 | |
8cefc145 PMF |
45 | #define GET_SUBBUF_OK 1 |
46 | #define GET_SUBBUF_DONE 0 | |
47 | #define GET_SUBBUF_DIED 2 | |
48 | ||
a3cdd4a7 PMF |
49 | #define PUT_SUBBUF_OK 1 |
50 | #define PUT_SUBBUF_DIED 0 | |
51 | #define PUT_SUBBUF_PUSHED 2 | |
52 | ||
c97d4437 | 53 | char *sock_path=NULL; |
cd226f25 PMF |
54 | char *trace_path=NULL; |
55 | ||
3158b808 PMF |
56 | /* Number of active buffers and the mutex to protect it. */ |
57 | int active_buffers = 0; | |
58 | pthread_mutex_t active_buffers_mutex = PTHREAD_MUTEX_INITIALIZER; | |
59 | /* Whether a request to end the program was received. */ | |
60 | sig_atomic_t terminate_req = 0; | |
61 | ||
a3cdd4a7 PMF |
62 | int test_sigpipe(void) |
63 | { | |
64 | sigset_t sigset; | |
65 | int result; | |
66 | ||
67 | result = sigemptyset(&sigset); | |
68 | if(result == -1) { | |
4d70f833 | 69 | PERROR("sigemptyset"); |
a3cdd4a7 PMF |
70 | return -1; |
71 | } | |
72 | result = sigaddset(&sigset, SIGPIPE); | |
73 | if(result == -1) { | |
4d70f833 | 74 | PERROR("sigaddset"); |
a3cdd4a7 PMF |
75 | return -1; |
76 | } | |
77 | ||
78 | result = sigtimedwait(&sigset, NULL, &(struct timespec){0,0}); | |
79 | if(result == -1 && errno == EAGAIN) { | |
80 | /* no signal received */ | |
81 | return 0; | |
82 | } | |
83 | else if(result == -1) { | |
4d70f833 | 84 | PERROR("sigtimedwait"); |
a3cdd4a7 PMF |
85 | return -1; |
86 | } | |
87 | else if(result == SIGPIPE) { | |
88 | /* received sigpipe */ | |
89 | return 1; | |
90 | } | |
91 | else { | |
92 | assert(0); | |
93 | } | |
94 | } | |
95 | ||
688760ef PMF |
96 | int get_subbuffer(struct buffer_info *buf) |
97 | { | |
ab805ccd PMF |
98 | char *send_msg=NULL; |
99 | char *received_msg=NULL; | |
100 | char *rep_code=NULL; | |
688760ef PMF |
101 | int retval; |
102 | int result; | |
103 | ||
104 | asprintf(&send_msg, "get_subbuffer %s", buf->name); | |
3bb56863 | 105 | result = ustcomm_send_request(&buf->conn, send_msg, &received_msg); |
a3cdd4a7 PMF |
106 | if(test_sigpipe()) { |
107 | WARN("process %d destroyed before we could connect to it", buf->pid); | |
ab805ccd PMF |
108 | retval = GET_SUBBUF_DONE; |
109 | goto end; | |
a3cdd4a7 PMF |
110 | } |
111 | else if(result < 0) { | |
3bb56863 | 112 | ERR("get_subbuffer: ustcomm_send_request failed"); |
ab805ccd PMF |
113 | retval = -1; |
114 | goto end; | |
688760ef | 115 | } |
688760ef PMF |
116 | |
117 | result = sscanf(received_msg, "%as %ld", &rep_code, &buf->consumed_old); | |
3a7b90de | 118 | if(result != 2 && result != 1) { |
688760ef | 119 | ERR("unable to parse response to get_subbuffer"); |
ab805ccd PMF |
120 | retval = -1; |
121 | goto end_rep; | |
688760ef | 122 | } |
3a7b90de PMF |
123 | |
124 | DBG("received msg is %s", received_msg); | |
688760ef PMF |
125 | |
126 | if(!strcmp(rep_code, "OK")) { | |
127 | DBG("got subbuffer %s", buf->name); | |
8cefc145 | 128 | retval = GET_SUBBUF_OK; |
688760ef | 129 | } |
3a7b90de | 130 | else if(nth_token_is(received_msg, "END", 0) == 1) { |
ab805ccd PMF |
131 | retval = GET_SUBBUF_DONE; |
132 | goto end_rep; | |
3a7b90de | 133 | } |
688760ef | 134 | else { |
3a7b90de PMF |
135 | DBG("error getting subbuffer %s", buf->name); |
136 | retval = -1; | |
688760ef PMF |
137 | } |
138 | ||
3a7b90de | 139 | /* FIMXE: free correctly the stuff */ |
ab805ccd PMF |
140 | end_rep: |
141 | if(rep_code) | |
142 | free(rep_code); | |
143 | end: | |
144 | if(send_msg) | |
145 | free(send_msg); | |
146 | if(received_msg) | |
147 | free(received_msg); | |
148 | ||
688760ef PMF |
149 | return retval; |
150 | } | |
151 | ||
152 | int put_subbuffer(struct buffer_info *buf) | |
153 | { | |
ab805ccd PMF |
154 | char *send_msg=NULL; |
155 | char *received_msg=NULL; | |
156 | char *rep_code=NULL; | |
688760ef PMF |
157 | int retval; |
158 | int result; | |
159 | ||
160 | asprintf(&send_msg, "put_subbuffer %s %ld", buf->name, buf->consumed_old); | |
3bb56863 | 161 | result = ustcomm_send_request(&buf->conn, send_msg, &received_msg); |
ab805ccd PMF |
162 | if(result < 0 && errno == ECONNRESET) { |
163 | retval = PUT_SUBBUF_DIED; | |
164 | goto end; | |
165 | } | |
688760ef PMF |
166 | if(result < 0) { |
167 | ERR("put_subbuffer: send_message failed"); | |
ab805ccd PMF |
168 | retval = -1; |
169 | goto end; | |
688760ef | 170 | } |
688760ef PMF |
171 | |
172 | result = sscanf(received_msg, "%as", &rep_code); | |
173 | if(result != 1) { | |
174 | ERR("unable to parse response to put_subbuffer"); | |
ab805ccd PMF |
175 | retval = -1; |
176 | goto end_rep; | |
688760ef | 177 | } |
688760ef PMF |
178 | |
179 | if(!strcmp(rep_code, "OK")) { | |
180 | DBG("subbuffer put %s", buf->name); | |
a3cdd4a7 | 181 | retval = PUT_SUBBUF_OK; |
688760ef PMF |
182 | } |
183 | else { | |
a3cdd4a7 | 184 | DBG("put_subbuffer: received error, we were pushed"); |
ab805ccd PMF |
185 | retval = PUT_SUBBUF_PUSHED; |
186 | goto end_rep; | |
688760ef PMF |
187 | } |
188 | ||
ab805ccd PMF |
189 | end_rep: |
190 | if(rep_code) | |
191 | free(rep_code); | |
192 | ||
193 | end: | |
194 | if(send_msg) | |
195 | free(send_msg); | |
196 | if(received_msg) | |
197 | free(received_msg); | |
198 | ||
688760ef PMF |
199 | return retval; |
200 | } | |
201 | ||
3158b808 PMF |
202 | void decrement_active_buffers(void *arg) |
203 | { | |
204 | pthread_mutex_lock(&active_buffers_mutex); | |
205 | active_buffers--; | |
206 | pthread_mutex_unlock(&active_buffers_mutex); | |
207 | } | |
208 | ||
3a7b90de PMF |
209 | void *consumer_thread(void *arg) |
210 | { | |
211 | struct buffer_info *buf = (struct buffer_info *) arg; | |
212 | int result; | |
213 | ||
3158b808 PMF |
214 | pthread_cleanup_push(decrement_active_buffers, NULL); |
215 | ||
3a7b90de | 216 | for(;;) { |
8cefc145 | 217 | /* get the subbuffer */ |
0b0cd937 PMF |
218 | result = get_subbuffer(buf); |
219 | if(result == -1) { | |
220 | ERR("error getting subbuffer"); | |
221 | continue; | |
3a7b90de | 222 | } |
0b0cd937 PMF |
223 | else if(result == GET_SUBBUF_DONE) { |
224 | /* this is done */ | |
225 | break; | |
226 | } | |
227 | else if(result == GET_SUBBUF_DIED) { | |
228 | finish_consuming_dead_subbuffer(buf); | |
229 | break; | |
3a7b90de PMF |
230 | } |
231 | ||
232 | /* write data to file */ | |
233 | result = patient_write(buf->file_fd, buf->mem + (buf->consumed_old & (buf->n_subbufs * buf->subbuf_size-1)), buf->subbuf_size); | |
234 | if(result == -1) { | |
235 | PERROR("write"); | |
236 | /* FIXME: maybe drop this trace */ | |
237 | } | |
238 | ||
8cefc145 | 239 | /* put the subbuffer */ |
0b0cd937 PMF |
240 | result = put_subbuffer(buf); |
241 | if(result == -1) { | |
a3cdd4a7 PMF |
242 | ERR("unknown error putting subbuffer (channel=%s)", buf->name); |
243 | break; | |
244 | } | |
245 | else if(result == PUT_SUBBUF_PUSHED) { | |
246 | ERR("Buffer overflow (channel=%s), reader pushed. This channel will not be usable passed this point.", buf->name); | |
0b0cd937 | 247 | break; |
3a7b90de | 248 | } |
a3cdd4a7 PMF |
249 | else if(result == PUT_SUBBUF_DIED) { |
250 | WARN("application died while putting subbuffer"); | |
251 | /* FIXME: probably need to skip the first subbuffer in finish_consuming_dead_subbuffer */ | |
252 | finish_consuming_dead_subbuffer(buf); | |
9f654956 | 253 | break; |
a3cdd4a7 PMF |
254 | } |
255 | else if(result == PUT_SUBBUF_OK) { | |
256 | } | |
3a7b90de PMF |
257 | } |
258 | ||
259 | DBG("thread for buffer %s is stopping", buf->name); | |
260 | ||
8cefc145 PMF |
261 | /* FIXME: destroy, unalloc... */ |
262 | ||
3158b808 PMF |
263 | pthread_cleanup_pop(1); |
264 | ||
3a7b90de PMF |
265 | return NULL; |
266 | } | |
267 | ||
72ebd39a PMF |
268 | int create_dir_if_needed(char *dir) |
269 | { | |
270 | int result; | |
271 | result = mkdir(dir, 0777); | |
272 | if(result == -1) { | |
273 | if(errno != EEXIST) { | |
4d70f833 | 274 | PERROR("mkdir"); |
72ebd39a PMF |
275 | return -1; |
276 | } | |
277 | } | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
cd226f25 PMF |
282 | int is_directory(const char *dir) |
283 | { | |
284 | int result; | |
285 | struct stat st; | |
286 | ||
287 | result = stat(dir, &st); | |
288 | if(result == -1) { | |
289 | PERROR("stat"); | |
290 | return 0; | |
291 | } | |
292 | ||
293 | if(!S_ISDIR(st.st_mode)) { | |
294 | return 0; | |
295 | } | |
296 | ||
297 | return 1; | |
298 | } | |
299 | ||
3a7b90de PMF |
300 | int add_buffer(pid_t pid, char *bufname) |
301 | { | |
302 | struct buffer_info *buf; | |
303 | char *send_msg; | |
304 | char *received_msg; | |
305 | int result; | |
306 | char *tmp; | |
307 | int fd; | |
308 | pthread_t thr; | |
a3cdd4a7 | 309 | struct shmid_ds shmds; |
3a7b90de PMF |
310 | |
311 | buf = (struct buffer_info *) malloc(sizeof(struct buffer_info)); | |
312 | if(buf == NULL) { | |
313 | ERR("add_buffer: insufficient memory"); | |
314 | return -1; | |
315 | } | |
316 | ||
317 | buf->name = bufname; | |
318 | buf->pid = pid; | |
319 | ||
4e2a8808 PMF |
320 | /* connect to app */ |
321 | result = ustcomm_connect_app(buf->pid, &buf->conn); | |
322 | if(result) { | |
a3cdd4a7 | 323 | WARN("unable to connect to process, it probably died before we were able to connect"); |
4e2a8808 PMF |
324 | return -1; |
325 | } | |
326 | ||
ed1317e7 PMF |
327 | /* get pidunique */ |
328 | asprintf(&send_msg, "get_pidunique"); | |
329 | result = ustcomm_send_request(&buf->conn, send_msg, &received_msg); | |
330 | free(send_msg); | |
331 | if(result == -1) { | |
332 | ERR("problem in ustcomm_send_request(get_pidunique)"); | |
333 | return -1; | |
334 | } | |
335 | ||
336 | result = sscanf(received_msg, "%lld", &buf->pidunique); | |
337 | if(result != 1) { | |
338 | ERR("unable to parse response to get_pidunique"); | |
339 | return -1; | |
340 | } | |
341 | free(received_msg); | |
342 | DBG("got pidunique %lld", buf->pidunique); | |
343 | ||
3a7b90de PMF |
344 | /* get shmid */ |
345 | asprintf(&send_msg, "get_shmid %s", buf->name); | |
a3cdd4a7 | 346 | result = ustcomm_send_request(&buf->conn, send_msg, &received_msg); |
3a7b90de | 347 | free(send_msg); |
a3cdd4a7 PMF |
348 | if(result == -1) { |
349 | ERR("problem in ustcomm_send_request(get_shmid)"); | |
350 | return -1; | |
351 | } | |
3a7b90de | 352 | |
8cefc145 PMF |
353 | result = sscanf(received_msg, "%d %d", &buf->shmid, &buf->bufstruct_shmid); |
354 | if(result != 2) { | |
3a7b90de PMF |
355 | ERR("unable to parse response to get_shmid"); |
356 | return -1; | |
357 | } | |
358 | free(received_msg); | |
8cefc145 | 359 | DBG("got shmids %d %d", buf->shmid, buf->bufstruct_shmid); |
3a7b90de PMF |
360 | |
361 | /* get n_subbufs */ | |
362 | asprintf(&send_msg, "get_n_subbufs %s", buf->name); | |
a3cdd4a7 | 363 | result = ustcomm_send_request(&buf->conn, send_msg, &received_msg); |
3a7b90de | 364 | free(send_msg); |
a3cdd4a7 PMF |
365 | if(result == -1) { |
366 | ERR("problem in ustcomm_send_request(g_n_subbufs)"); | |
367 | return -1; | |
368 | } | |
3a7b90de PMF |
369 | |
370 | result = sscanf(received_msg, "%d", &buf->n_subbufs); | |
371 | if(result != 1) { | |
372 | ERR("unable to parse response to get_n_subbufs"); | |
373 | return -1; | |
374 | } | |
375 | free(received_msg); | |
376 | DBG("got n_subbufs %d", buf->n_subbufs); | |
377 | ||
378 | /* get subbuf size */ | |
379 | asprintf(&send_msg, "get_subbuf_size %s", buf->name); | |
4e2a8808 | 380 | ustcomm_send_request(&buf->conn, send_msg, &received_msg); |
3a7b90de PMF |
381 | free(send_msg); |
382 | ||
383 | result = sscanf(received_msg, "%d", &buf->subbuf_size); | |
384 | if(result != 1) { | |
385 | ERR("unable to parse response to get_subbuf_size"); | |
386 | return -1; | |
387 | } | |
388 | free(received_msg); | |
389 | DBG("got subbuf_size %d", buf->subbuf_size); | |
390 | ||
391 | /* attach memory */ | |
392 | buf->mem = shmat(buf->shmid, NULL, 0); | |
393 | if(buf->mem == (void *) 0) { | |
4d70f833 | 394 | PERROR("shmat"); |
3a7b90de PMF |
395 | return -1; |
396 | } | |
8cefc145 PMF |
397 | DBG("successfully attached buffer memory"); |
398 | ||
399 | buf->bufstruct_mem = shmat(buf->bufstruct_shmid, NULL, 0); | |
400 | if(buf->bufstruct_mem == (void *) 0) { | |
4d70f833 | 401 | PERROR("shmat"); |
8cefc145 PMF |
402 | return -1; |
403 | } | |
404 | DBG("successfully attached buffer bufstruct memory"); | |
3a7b90de | 405 | |
a3cdd4a7 PMF |
406 | /* obtain info on the memory segment */ |
407 | result = shmctl(buf->shmid, IPC_STAT, &shmds); | |
408 | if(result == -1) { | |
4d70f833 | 409 | PERROR("shmctl"); |
a3cdd4a7 PMF |
410 | return -1; |
411 | } | |
412 | buf->memlen = shmds.shm_segsz; | |
413 | ||
3a7b90de | 414 | /* open file for output */ |
cd226f25 PMF |
415 | if(!trace_path) { |
416 | /* Only create the directory if using the default path, because | |
417 | * of the risk of typo when using trace path override. We don't | |
418 | * want to risk creating plenty of useless directories in that case. | |
419 | */ | |
420 | result = create_dir_if_needed(USTD_DEFAULT_TRACE_PATH); | |
421 | if(result == -1) { | |
422 | ERR("could not create directory %s", USTD_DEFAULT_TRACE_PATH); | |
423 | return -1; | |
424 | } | |
425 | ||
426 | trace_path = USTD_DEFAULT_TRACE_PATH; | |
72ebd39a PMF |
427 | } |
428 | ||
ed1317e7 | 429 | asprintf(&tmp, "%s/%u_%lld", trace_path, buf->pid, buf->pidunique); |
72ebd39a PMF |
430 | result = create_dir_if_needed(tmp); |
431 | if(result == -1) { | |
432 | ERR("could not create directory %s", tmp); | |
433 | free(tmp); | |
434 | return -1; | |
435 | } | |
436 | free(tmp); | |
437 | ||
ed1317e7 PMF |
438 | asprintf(&tmp, "%s/%u_%lld/%s_0", trace_path, buf->pid, buf->pidunique, buf->name); |
439 | result = fd = open(tmp, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 00600); | |
3a7b90de PMF |
440 | if(result == -1) { |
441 | PERROR("open"); | |
6cb88bc0 | 442 | ERR("failed opening trace file %s", tmp); |
3a7b90de PMF |
443 | return -1; |
444 | } | |
445 | buf->file_fd = fd; | |
446 | free(tmp); | |
447 | ||
3158b808 PMF |
448 | pthread_mutex_lock(&active_buffers_mutex); |
449 | active_buffers++; | |
450 | pthread_mutex_unlock(&active_buffers_mutex); | |
451 | ||
3a7b90de PMF |
452 | pthread_create(&thr, NULL, consumer_thread, buf); |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
cd226f25 PMF |
457 | void usage(void) |
458 | { | |
459 | fprintf(stderr, "Usage:\nustd OPTIONS\n\nOptions:\n" | |
460 | "\t-h\t\tDisplay this usage.\n" | |
461 | "\t-o DIR\t\tSpecify the directory where to output the traces.\n" | |
462 | "\t-s PATH\t\tSpecify the path to use for the daemon socket.\n"); | |
463 | } | |
464 | ||
465 | int parse_args(int argc, char **argv) | |
466 | { | |
467 | int c; | |
468 | ||
469 | while (1) { | |
470 | int option_index = 0; | |
471 | static struct option long_options[] = { | |
472 | {"help", 0, 0, 'h'}, | |
473 | {"version", 0, 0, 'V'}, | |
474 | {0, 0, 0, 0} | |
475 | }; | |
476 | ||
477 | c = getopt_long(argc, argv, "hs:o:", long_options, &option_index); | |
478 | if (c == -1) | |
479 | break; | |
480 | ||
481 | switch (c) { | |
482 | case 0: | |
483 | printf("option %s", long_options[option_index].name); | |
484 | if (optarg) | |
485 | printf(" with arg %s", optarg); | |
486 | printf("\n"); | |
487 | break; | |
488 | case 's': | |
489 | sock_path = optarg; | |
490 | break; | |
491 | case 'o': | |
492 | trace_path = optarg; | |
493 | if(!is_directory(trace_path)) { | |
494 | ERR("Not a valid directory. (%s)", trace_path); | |
495 | return -1; | |
496 | } | |
497 | break; | |
498 | case 'h': | |
499 | usage(); | |
500 | exit(0); | |
501 | case 'V': | |
502 | printf("Version 0.0\n"); | |
503 | break; | |
504 | ||
505 | default: | |
506 | /* unknown option or other error; error is | |
507 | printed by getopt, just return */ | |
508 | return -1; | |
509 | } | |
510 | } | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
3158b808 PMF |
515 | void sigterm_handler(int sig) |
516 | { | |
517 | terminate_req = 1; | |
518 | } | |
519 | ||
3796af9b PMF |
520 | int main(int argc, char **argv) |
521 | { | |
522 | struct ustcomm_ustd ustd; | |
523 | int result; | |
a3cdd4a7 | 524 | sigset_t sigset; |
3158b808 PMF |
525 | struct sigaction sa; |
526 | ||
527 | result = sigemptyset(&sigset); | |
528 | if(result == -1) { | |
4d70f833 | 529 | PERROR("sigemptyset"); |
3158b808 PMF |
530 | return 1; |
531 | } | |
532 | sa.sa_handler = sigterm_handler; | |
533 | sa.sa_mask = sigset; | |
534 | sa.sa_flags = SA_RESTART; | |
535 | result = sigaction(SIGTERM, &sa, NULL); | |
536 | if(result == -1) { | |
537 | PERROR("sigaction"); | |
538 | return 1; | |
539 | } | |
3796af9b | 540 | |
cd226f25 PMF |
541 | result = parse_args(argc, argv); |
542 | if(result == -1) { | |
543 | exit(1); | |
544 | } | |
545 | ||
546 | result = ustcomm_init_ustd(&ustd, sock_path); | |
3796af9b PMF |
547 | if(result == -1) { |
548 | ERR("failed to initialize socket"); | |
549 | return 1; | |
550 | } | |
551 | ||
3158b808 | 552 | /* setup handler for SIGPIPE */ |
a3cdd4a7 PMF |
553 | result = sigemptyset(&sigset); |
554 | if(result == -1) { | |
4d70f833 | 555 | PERROR("sigemptyset"); |
a3cdd4a7 PMF |
556 | return 1; |
557 | } | |
558 | result = sigaddset(&sigset, SIGPIPE); | |
559 | if(result == -1) { | |
4d70f833 | 560 | PERROR("sigaddset"); |
a3cdd4a7 PMF |
561 | return 1; |
562 | } | |
563 | result = sigprocmask(SIG_BLOCK, &sigset, NULL); | |
564 | if(result == -1) { | |
4d70f833 | 565 | PERROR("sigprocmask"); |
a3cdd4a7 PMF |
566 | return 1; |
567 | } | |
568 | ||
688760ef | 569 | /* app loop */ |
3796af9b PMF |
570 | for(;;) { |
571 | char *recvbuf; | |
572 | ||
3a7b90de | 573 | /* check for requests on our public socket */ |
688760ef PMF |
574 | result = ustcomm_ustd_recv_message(&ustd, &recvbuf, NULL, 100); |
575 | if(result == -1) { | |
576 | ERR("error in ustcomm_ustd_recv_message"); | |
577 | continue; | |
578 | } | |
579 | if(result > 0) { | |
580 | if(!strncmp(recvbuf, "collect", 7)) { | |
581 | pid_t pid; | |
582 | char *bufname; | |
583 | int result; | |
3796af9b | 584 | |
688760ef PMF |
585 | result = sscanf(recvbuf, "%*s %d %50as", &pid, &bufname); |
586 | if(result != 2) { | |
587 | fprintf(stderr, "parsing error: %s\n", recvbuf); | |
588 | } | |
3796af9b | 589 | |
688760ef PMF |
590 | result = add_buffer(pid, bufname); |
591 | if(result < 0) { | |
592 | ERR("error in add_buffer"); | |
593 | continue; | |
594 | } | |
3796af9b PMF |
595 | } |
596 | ||
688760ef | 597 | free(recvbuf); |
3796af9b | 598 | } |
3158b808 PMF |
599 | |
600 | if(terminate_req) { | |
601 | pthread_mutex_lock(&active_buffers_mutex); | |
602 | if(active_buffers == 0) { | |
603 | pthread_mutex_unlock(&active_buffers_mutex); | |
604 | break; | |
605 | } | |
606 | pthread_mutex_unlock(&active_buffers_mutex); | |
607 | } | |
3796af9b PMF |
608 | } |
609 | ||
610 | return 0; | |
611 | } |