Commit | Line | Data |
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132159a5 JA |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
3 | #include <unistd.h> | |
4 | #include <limits.h> | |
5 | #include <errno.h> | |
6 | #include <fcntl.h> | |
7 | #include <sys/poll.h> | |
8 | #include <sys/types.h> | |
9 | #include <sys/stat.h> | |
10 | #include <sys/wait.h> | |
d05c4a03 | 11 | #include <sys/socket.h> |
132159a5 JA |
12 | #include <netinet/in.h> |
13 | #include <arpa/inet.h> | |
14 | #include <netdb.h> | |
9e22ecb0 | 15 | #include <signal.h> |
132159a5 JA |
16 | |
17 | #include "fio.h" | |
18 | #include "server.h" | |
19 | #include "crc/crc32.h" | |
b66570dc | 20 | #include "flist.h" |
132159a5 | 21 | |
b66570dc JA |
22 | struct fio_client { |
23 | struct flist_head list; | |
24 | struct sockaddr_in addr; | |
25 | char *hostname; | |
26 | int fd; | |
81179eec JA |
27 | |
28 | int state; | |
17dd1764 | 29 | int skip_newline; |
81179eec JA |
30 | |
31 | uint16_t argc; | |
32 | char **argv; | |
33 | }; | |
34 | ||
35 | enum { | |
5c2857f9 | 36 | Client_created = 0, |
81179eec JA |
37 | Client_connected = 1, |
38 | Client_started = 2, | |
39 | Client_stopped = 3, | |
5c2857f9 | 40 | Client_exited = 4, |
b66570dc JA |
41 | }; |
42 | ||
43 | static FLIST_HEAD(client_list); | |
b66570dc | 44 | |
e951bdc4 | 45 | static int handle_client(struct fio_client *client); |
0b8f30a5 | 46 | |
b66570dc JA |
47 | static struct fio_client *find_client_by_fd(int fd) |
48 | { | |
49 | struct fio_client *client; | |
50 | struct flist_head *entry; | |
51 | ||
52 | flist_for_each(entry, &client_list) { | |
53 | client = flist_entry(entry, struct fio_client, list); | |
54 | ||
55 | if (client->fd == fd) | |
56 | return client; | |
57 | } | |
58 | ||
59 | return NULL; | |
60 | } | |
61 | ||
62 | static struct fio_client *find_client_by_name(const char *name) | |
63 | { | |
64 | struct fio_client *client; | |
65 | struct flist_head *entry; | |
66 | ||
67 | flist_for_each(entry, &client_list) { | |
68 | client = flist_entry(entry, struct fio_client, list); | |
69 | ||
70 | if (!strcmp(name, client->hostname)) | |
71 | return client; | |
72 | } | |
73 | ||
74 | return NULL; | |
75 | } | |
76 | ||
77 | static void remove_client(struct fio_client *client) | |
78 | { | |
39e8e016 | 79 | dprint(FD_NET, "client: removed <%s>\n", client->hostname); |
b66570dc JA |
80 | flist_del(&client->list); |
81 | nr_clients--; | |
81179eec | 82 | |
b66570dc | 83 | free(client->hostname); |
81179eec JA |
84 | if (client->argv) |
85 | free(client->argv); | |
86 | ||
b66570dc JA |
87 | free(client); |
88 | } | |
132159a5 | 89 | |
7a4b8240 JA |
90 | static int __fio_client_add_cmd_option(struct fio_client *client, |
91 | const char *opt) | |
81179eec | 92 | { |
39e8e016 JA |
93 | int index; |
94 | ||
7a4b8240 JA |
95 | if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) { |
96 | log_err("fio: max cmd line number reached.\n"); | |
97 | log_err("fio: cmd line <%s> has been ignored.\n", opt); | |
98 | return 1; | |
99 | } | |
100 | ||
39e8e016 | 101 | index = client->argc++; |
81179eec | 102 | client->argv = realloc(client->argv, sizeof(char *) * client->argc); |
39e8e016 JA |
103 | client->argv[index] = strdup(opt); |
104 | dprint(FD_NET, "client: add cmd %d: %s\n", index, opt); | |
7a4b8240 | 105 | return 0; |
81179eec JA |
106 | } |
107 | ||
7a4b8240 | 108 | int fio_client_add_cmd_option(const char *hostname, const char *opt) |
81179eec JA |
109 | { |
110 | struct fio_client *client; | |
111 | ||
112 | if (!hostname || !opt) | |
7a4b8240 | 113 | return 0; |
81179eec JA |
114 | |
115 | client = find_client_by_name(hostname); | |
116 | if (!client) { | |
117 | log_err("fio: unknown client %s\n", hostname); | |
7a4b8240 | 118 | return 1; |
81179eec JA |
119 | } |
120 | ||
7a4b8240 | 121 | return __fio_client_add_cmd_option(client, opt); |
81179eec JA |
122 | } |
123 | ||
a37f69b7 | 124 | void fio_client_add(const char *hostname) |
132159a5 | 125 | { |
b66570dc | 126 | struct fio_client *client; |
132159a5 | 127 | |
39e8e016 | 128 | dprint(FD_NET, "client: added <%s>\n", hostname); |
b66570dc | 129 | client = malloc(sizeof(*client)); |
a37f69b7 | 130 | memset(client, 0, sizeof(*client)); |
81179eec | 131 | |
a37f69b7 JA |
132 | client->hostname = strdup(hostname); |
133 | client->fd = -1; | |
81179eec JA |
134 | |
135 | __fio_client_add_cmd_option(client, "fio"); | |
136 | ||
a37f69b7 JA |
137 | flist_add(&client->list, &client_list); |
138 | nr_clients++; | |
139 | } | |
140 | ||
141 | static int fio_client_connect(struct fio_client *client) | |
142 | { | |
143 | int fd; | |
132159a5 | 144 | |
39e8e016 | 145 | dprint(FD_NET, "client: connect to host %s\n", client->hostname); |
46c48f1f | 146 | |
b66570dc JA |
147 | memset(&client->addr, 0, sizeof(client->addr)); |
148 | client->addr.sin_family = AF_INET; | |
149 | client->addr.sin_port = htons(fio_net_port); | |
150 | ||
a37f69b7 | 151 | if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) { |
132159a5 JA |
152 | struct hostent *hent; |
153 | ||
a37f69b7 | 154 | hent = gethostbyname(client->hostname); |
132159a5 JA |
155 | if (!hent) { |
156 | log_err("fio: gethostbyname: %s\n", strerror(errno)); | |
e951bdc4 JA |
157 | log_err("fio: failed looking up hostname %s\n", |
158 | client->hostname); | |
132159a5 JA |
159 | return 1; |
160 | } | |
161 | ||
b66570dc | 162 | memcpy(&client->addr.sin_addr, hent->h_addr, 4); |
132159a5 JA |
163 | } |
164 | ||
165 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
166 | if (fd < 0) { | |
167 | log_err("fio: socket: %s\n", strerror(errno)); | |
168 | return 1; | |
169 | } | |
170 | ||
b66570dc | 171 | if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) { |
132159a5 | 172 | log_err("fio: connect: %s\n", strerror(errno)); |
cdf54d85 | 173 | log_err("fio: failed to connect to %s\n", client->hostname); |
132159a5 JA |
174 | return 1; |
175 | } | |
176 | ||
b66570dc | 177 | client->fd = fd; |
81179eec | 178 | client->state = Client_connected; |
132159a5 JA |
179 | return 0; |
180 | } | |
181 | ||
cc0df00a JA |
182 | void fio_clients_terminate(void) |
183 | { | |
184 | struct flist_head *entry; | |
185 | struct fio_client *client; | |
186 | ||
60efd14e JA |
187 | dprint(FD_NET, "client: terminate clients\n"); |
188 | ||
cc0df00a JA |
189 | flist_for_each(entry, &client_list) { |
190 | client = flist_entry(entry, struct fio_client, list); | |
191 | ||
192 | fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0); | |
193 | } | |
194 | } | |
195 | ||
196 | static void sig_int(int sig) | |
197 | { | |
60efd14e | 198 | dprint(FD_NET, "client: got sign %d\n", sig); |
cc0df00a JA |
199 | fio_clients_terminate(); |
200 | } | |
201 | ||
202 | static void client_signal_handler(void) | |
203 | { | |
204 | struct sigaction act; | |
205 | ||
206 | memset(&act, 0, sizeof(act)); | |
207 | act.sa_handler = sig_int; | |
208 | act.sa_flags = SA_RESTART; | |
209 | sigaction(SIGINT, &act, NULL); | |
210 | ||
211 | memset(&act, 0, sizeof(act)); | |
212 | act.sa_handler = sig_int; | |
213 | act.sa_flags = SA_RESTART; | |
214 | sigaction(SIGTERM, &act, NULL); | |
215 | } | |
216 | ||
0b8f30a5 JA |
217 | static void probe_client(struct fio_client *client) |
218 | { | |
60efd14e JA |
219 | dprint(FD_NET, "client: send probe\n"); |
220 | ||
0b8f30a5 | 221 | fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0); |
e951bdc4 | 222 | handle_client(client); |
0b8f30a5 JA |
223 | } |
224 | ||
81179eec JA |
225 | static int send_client_cmd_line(struct fio_client *client) |
226 | { | |
227 | struct cmd_line_pdu *pdu; | |
228 | int i, ret; | |
229 | ||
39e8e016 | 230 | dprint(FD_NET, "client: send cmdline %d\n", client->argc); |
60efd14e | 231 | |
81179eec JA |
232 | pdu = malloc(sizeof(*pdu)); |
233 | for (i = 0; i < client->argc; i++) | |
234 | strcpy((char *) pdu->argv[i], client->argv[i]); | |
235 | ||
236 | pdu->argc = cpu_to_le16(client->argc); | |
237 | ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu)); | |
238 | free(pdu); | |
239 | return ret; | |
240 | } | |
241 | ||
a37f69b7 JA |
242 | int fio_clients_connect(void) |
243 | { | |
244 | struct fio_client *client; | |
245 | struct flist_head *entry, *tmp; | |
246 | int ret; | |
247 | ||
60efd14e JA |
248 | dprint(FD_NET, "client: connect all\n"); |
249 | ||
cc0df00a JA |
250 | client_signal_handler(); |
251 | ||
a37f69b7 JA |
252 | flist_for_each_safe(entry, tmp, &client_list) { |
253 | client = flist_entry(entry, struct fio_client, list); | |
254 | ||
255 | ret = fio_client_connect(client); | |
0b8f30a5 | 256 | if (ret) { |
a37f69b7 | 257 | remove_client(client); |
0b8f30a5 JA |
258 | continue; |
259 | } | |
260 | ||
261 | probe_client(client); | |
81179eec JA |
262 | |
263 | if (client->argc > 1) | |
264 | send_client_cmd_line(client); | |
a37f69b7 JA |
265 | } |
266 | ||
267 | return !nr_clients; | |
268 | } | |
269 | ||
132159a5 JA |
270 | /* |
271 | * Send file contents to server backend. We could use sendfile(), but to remain | |
272 | * more portable lets just read/write the darn thing. | |
273 | */ | |
a37f69b7 | 274 | static int fio_client_send_ini(struct fio_client *client, const char *filename) |
132159a5 JA |
275 | { |
276 | struct stat sb; | |
277 | char *p, *buf; | |
278 | off_t len; | |
279 | int fd, ret; | |
280 | ||
46c48f1f JA |
281 | dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname); |
282 | ||
132159a5 JA |
283 | fd = open(filename, O_RDONLY); |
284 | if (fd < 0) { | |
e951bdc4 | 285 | log_err("fio: job file <%s> open: %s\n", filename, strerror(errno)); |
132159a5 JA |
286 | return 1; |
287 | } | |
288 | ||
289 | if (fstat(fd, &sb) < 0) { | |
290 | log_err("fio: job file stat: %s\n", strerror(errno)); | |
291 | return 1; | |
292 | } | |
293 | ||
294 | buf = malloc(sb.st_size); | |
295 | ||
296 | len = sb.st_size; | |
297 | p = buf; | |
298 | do { | |
299 | ret = read(fd, p, len); | |
300 | if (ret > 0) { | |
301 | len -= ret; | |
302 | if (!len) | |
303 | break; | |
304 | p += ret; | |
305 | continue; | |
306 | } else if (!ret) | |
307 | break; | |
308 | else if (errno == EAGAIN || errno == EINTR) | |
309 | continue; | |
310 | } while (1); | |
311 | ||
0b8f30a5 JA |
312 | if (len) { |
313 | log_err("fio: failed reading job file %s\n", filename); | |
314 | return 1; | |
315 | } | |
316 | ||
81179eec | 317 | ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size); |
132159a5 JA |
318 | free(buf); |
319 | return ret; | |
320 | } | |
37db14fe | 321 | |
a37f69b7 JA |
322 | int fio_clients_send_ini(const char *filename) |
323 | { | |
324 | struct fio_client *client; | |
325 | struct flist_head *entry, *tmp; | |
326 | ||
327 | flist_for_each_safe(entry, tmp, &client_list) { | |
328 | client = flist_entry(entry, struct fio_client, list); | |
329 | ||
330 | if (fio_client_send_ini(client, filename)) | |
331 | remove_client(client); | |
332 | } | |
333 | ||
334 | return !nr_clients; | |
335 | } | |
336 | ||
a64e88da JA |
337 | static void convert_io_stat(struct io_stat *dst, struct io_stat *src) |
338 | { | |
339 | dst->max_val = le64_to_cpu(src->max_val); | |
340 | dst->min_val = le64_to_cpu(src->min_val); | |
341 | dst->samples = le64_to_cpu(src->samples); | |
802ad4a8 JA |
342 | |
343 | /* | |
344 | * Floats arrive as IEEE 754 encoded uint64_t, convert back to double | |
345 | */ | |
346 | dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i)); | |
347 | dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i)); | |
a64e88da JA |
348 | } |
349 | ||
350 | static void convert_ts(struct thread_stat *dst, struct thread_stat *src) | |
351 | { | |
352 | int i, j; | |
353 | ||
354 | dst->error = le32_to_cpu(src->error); | |
355 | dst->groupid = le32_to_cpu(src->groupid); | |
356 | dst->pid = le32_to_cpu(src->pid); | |
357 | dst->members = le32_to_cpu(src->members); | |
358 | ||
359 | for (i = 0; i < 2; i++) { | |
360 | convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]); | |
361 | convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]); | |
362 | convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]); | |
363 | convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]); | |
364 | } | |
365 | ||
366 | dst->usr_time = le64_to_cpu(src->usr_time); | |
367 | dst->sys_time = le64_to_cpu(src->sys_time); | |
368 | dst->ctx = le64_to_cpu(src->ctx); | |
369 | dst->minf = le64_to_cpu(src->minf); | |
370 | dst->majf = le64_to_cpu(src->majf); | |
371 | dst->clat_percentiles = le64_to_cpu(src->clat_percentiles); | |
802ad4a8 JA |
372 | |
373 | for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) { | |
374 | fio_fp64_t *fps = &src->percentile_list[i]; | |
375 | fio_fp64_t *fpd = &dst->percentile_list[i]; | |
376 | ||
377 | fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i)); | |
378 | } | |
a64e88da JA |
379 | |
380 | for (i = 0; i < FIO_IO_U_MAP_NR; i++) { | |
381 | dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]); | |
382 | dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]); | |
383 | dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]); | |
384 | } | |
385 | ||
386 | for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) { | |
387 | dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]); | |
388 | dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]); | |
389 | } | |
390 | ||
391 | for (i = 0; i < 2; i++) | |
392 | for (j = 0; j < FIO_IO_U_PLAT_NR; j++) | |
393 | dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]); | |
394 | ||
395 | for (i = 0; i < 3; i++) { | |
396 | dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]); | |
93eee04a | 397 | dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]); |
a64e88da JA |
398 | } |
399 | ||
400 | dst->total_submit = le64_to_cpu(src->total_submit); | |
401 | dst->total_complete = le64_to_cpu(src->total_complete); | |
402 | ||
403 | for (i = 0; i < 2; i++) { | |
404 | dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]); | |
405 | dst->runtime[i] = le64_to_cpu(src->runtime[i]); | |
406 | } | |
407 | ||
408 | dst->total_run_time = le64_to_cpu(src->total_run_time); | |
409 | dst->continue_on_error = le16_to_cpu(src->continue_on_error); | |
410 | dst->total_err_count = le64_to_cpu(src->total_err_count); | |
ddcc0b69 JA |
411 | dst->first_error = le32_to_cpu(src->first_error); |
412 | dst->kb_base = le32_to_cpu(src->kb_base); | |
a64e88da JA |
413 | } |
414 | ||
415 | static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src) | |
416 | { | |
417 | int i; | |
418 | ||
419 | for (i = 0; i < 2; i++) { | |
420 | dst->max_run[i] = le64_to_cpu(src->max_run[i]); | |
421 | dst->min_run[i] = le64_to_cpu(src->min_run[i]); | |
422 | dst->max_bw[i] = le64_to_cpu(src->max_bw[i]); | |
423 | dst->min_bw[i] = le64_to_cpu(src->min_bw[i]); | |
424 | dst->io_kb[i] = le64_to_cpu(src->io_kb[i]); | |
425 | dst->agg[i] = le64_to_cpu(src->agg[i]); | |
426 | } | |
427 | ||
428 | dst->kb_base = le32_to_cpu(src->kb_base); | |
429 | dst->groupid = le32_to_cpu(src->groupid); | |
430 | } | |
431 | ||
432 | static void handle_ts(struct fio_net_cmd *cmd) | |
433 | { | |
434 | struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload; | |
435 | ||
436 | convert_ts(&p->ts, &p->ts); | |
437 | convert_gs(&p->rs, &p->rs); | |
438 | ||
439 | show_thread_status(&p->ts, &p->rs); | |
440 | } | |
441 | ||
442 | static void handle_gs(struct fio_net_cmd *cmd) | |
443 | { | |
444 | struct group_run_stats *gs = (struct group_run_stats *) cmd->payload; | |
445 | ||
446 | convert_gs(gs, gs); | |
447 | show_group_stats(gs); | |
448 | } | |
449 | ||
cf451d1e JA |
450 | static void handle_eta(struct fio_net_cmd *cmd) |
451 | { | |
452 | struct jobs_eta *je = (struct jobs_eta *) cmd->payload; | |
453 | int i; | |
454 | ||
455 | je->nr_running = le32_to_cpu(je->nr_running); | |
456 | je->nr_ramp = le32_to_cpu(je->nr_ramp); | |
457 | je->nr_pending = le32_to_cpu(je->nr_pending); | |
458 | je->files_open = le32_to_cpu(je->files_open); | |
459 | je->m_rate = le32_to_cpu(je->m_rate); | |
460 | je->t_rate = le32_to_cpu(je->t_rate); | |
461 | je->m_iops = le32_to_cpu(je->m_iops); | |
462 | je->t_iops = le32_to_cpu(je->t_iops); | |
463 | ||
464 | for (i = 0; i < 2; i++) { | |
465 | je->rate[i] = le32_to_cpu(je->rate[i]); | |
466 | je->iops[i] = le32_to_cpu(je->iops[i]); | |
467 | } | |
468 | ||
469 | je->elapsed_sec = le32_to_cpu(je->nr_running); | |
470 | je->eta_sec = le64_to_cpu(je->eta_sec); | |
471 | ||
472 | display_thread_status(je); | |
473 | } | |
474 | ||
2e03b4b2 JA |
475 | static void handle_probe(struct fio_net_cmd *cmd) |
476 | { | |
477 | struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload; | |
478 | ||
6eb24791 JA |
479 | log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n", |
480 | probe->hostname, probe->bigendian, probe->fio_major, | |
481 | probe->fio_minor, probe->fio_patch); | |
2e03b4b2 JA |
482 | } |
483 | ||
e951bdc4 | 484 | static int handle_client(struct fio_client *client) |
37db14fe JA |
485 | { |
486 | struct fio_net_cmd *cmd; | |
487 | ||
60efd14e JA |
488 | dprint(FD_NET, "client: handle %s\n", client->hostname); |
489 | ||
e951bdc4 JA |
490 | cmd = fio_net_recv_cmd(client->fd); |
491 | if (!cmd) | |
492 | return 0; | |
c2c94585 | 493 | |
e951bdc4 | 494 | dprint(FD_NET, "client: got cmd op %d from %s\n", |
c2c94585 | 495 | cmd->opcode, client->hostname); |
46c48f1f | 496 | |
e951bdc4 JA |
497 | switch (cmd->opcode) { |
498 | case FIO_NET_CMD_QUIT: | |
499 | remove_client(client); | |
500 | free(cmd); | |
501 | break; | |
502 | case FIO_NET_CMD_TEXT: { | |
503 | const char *buf = (const char *) cmd->payload; | |
504 | int fio_unused ret; | |
505 | ||
506 | if (!client->skip_newline) | |
507 | fprintf(f_out, "<%s> ", client->hostname); | |
508 | ret = fwrite(buf, cmd->pdu_len, 1, f_out); | |
509 | fflush(f_out); | |
510 | client->skip_newline = strchr(buf, '\n') == NULL; | |
511 | free(cmd); | |
512 | break; | |
37db14fe | 513 | } |
e951bdc4 JA |
514 | case FIO_NET_CMD_TS: |
515 | handle_ts(cmd); | |
516 | free(cmd); | |
517 | break; | |
518 | case FIO_NET_CMD_GS: | |
519 | handle_gs(cmd); | |
520 | free(cmd); | |
521 | break; | |
522 | case FIO_NET_CMD_ETA: | |
523 | handle_eta(cmd); | |
524 | free(cmd); | |
525 | break; | |
526 | case FIO_NET_CMD_PROBE: | |
527 | handle_probe(cmd); | |
528 | free(cmd); | |
529 | break; | |
530 | case FIO_NET_CMD_START: | |
531 | client->state = Client_started; | |
532 | free(cmd); | |
533 | break; | |
534 | case FIO_NET_CMD_STOP: | |
535 | client->state = Client_stopped; | |
536 | free(cmd); | |
537 | break; | |
538 | default: | |
539 | log_err("fio: unknown client op: %d\n", cmd->opcode); | |
540 | free(cmd); | |
541 | break; | |
37db14fe JA |
542 | } |
543 | ||
e951bdc4 | 544 | return 1; |
37db14fe | 545 | } |
b66570dc JA |
546 | |
547 | int fio_handle_clients(void) | |
548 | { | |
549 | struct fio_client *client; | |
550 | struct flist_head *entry; | |
551 | struct pollfd *pfds; | |
82a4be1b | 552 | int i, ret = 0; |
b66570dc JA |
553 | |
554 | pfds = malloc(nr_clients * sizeof(struct pollfd)); | |
555 | ||
82a4be1b JA |
556 | while (!exit_backend && nr_clients) { |
557 | i = 0; | |
558 | flist_for_each(entry, &client_list) { | |
559 | client = flist_entry(entry, struct fio_client, list); | |
b66570dc | 560 | |
82a4be1b JA |
561 | pfds[i].fd = client->fd; |
562 | pfds[i].events = POLLIN; | |
563 | i++; | |
564 | } | |
565 | ||
566 | assert(i == nr_clients); | |
b66570dc | 567 | |
5c2857f9 JA |
568 | do { |
569 | ret = poll(pfds, nr_clients, 100); | |
570 | if (ret < 0) { | |
571 | if (errno == EINTR) | |
572 | continue; | |
573 | log_err("fio: poll clients: %s\n", strerror(errno)); | |
574 | break; | |
575 | } else if (!ret) | |
b66570dc | 576 | continue; |
5c2857f9 | 577 | } while (ret <= 0); |
b66570dc JA |
578 | |
579 | for (i = 0; i < nr_clients; i++) { | |
580 | if (!(pfds[i].revents & POLLIN)) | |
581 | continue; | |
582 | ||
583 | client = find_client_by_fd(pfds[i].fd); | |
584 | if (!client) { | |
585 | log_err("fio: unknown client\n"); | |
586 | continue; | |
587 | } | |
e951bdc4 | 588 | if (!handle_client(client)) { |
28d3ab07 JA |
589 | log_info("client: host=%s disconnected\n", |
590 | client->hostname); | |
591 | remove_client(client); | |
592 | } | |
b66570dc JA |
593 | } |
594 | } | |
595 | ||
596 | free(pfds); | |
b66570dc JA |
597 | return 0; |
598 | } |