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Get rid of uninitialized_var()
[fio.git] / client.c
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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>
11#include <sys/socket.h>
12#include <sys/un.h>
13#include <netinet/in.h>
14#include <arpa/inet.h>
15#include <netdb.h>
16#include <signal.h>
17
18#include "fio.h"
19#include "server.h"
20#include "flist.h"
21#include "hash.h"
22
23struct client_eta {
24 struct jobs_eta eta;
25 unsigned int pending;
26};
27
28struct fio_client {
29 struct flist_head list;
30 struct flist_head hash_list;
31 struct flist_head arg_list;
32 union {
33 struct sockaddr_in addr;
34 struct sockaddr_in6 addr6;
35 struct sockaddr_un addr_un;
36 };
37 char *hostname;
38 int port;
39 int fd;
40 unsigned int refs;
41
42 char *name;
43
44 int state;
45
46 int skip_newline;
47 int is_sock;
48 int disk_stats_shown;
49 unsigned int jobs;
50 int error;
51 int ipv6;
52 int sent_job;
53
54 struct flist_head eta_list;
55 struct client_eta *eta_in_flight;
56
57 struct flist_head cmd_list;
58
59 uint16_t argc;
60 char **argv;
61
62 char **ini_file;
63 unsigned int nr_ini_file;
64};
65
66static struct timeval eta_tv;
67
68enum {
69 Client_created = 0,
70 Client_connected = 1,
71 Client_started = 2,
72 Client_running = 3,
73 Client_stopped = 4,
74 Client_exited = 5,
75};
76
77static FLIST_HEAD(client_list);
78static FLIST_HEAD(eta_list);
79
80static FLIST_HEAD(arg_list);
81
82static struct thread_stat client_ts;
83static struct group_run_stats client_gs;
84static int sum_stat_clients;
85static int sum_stat_nr;
86
87#define FIO_CLIENT_HASH_BITS 7
88#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
89#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
90static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
91
92static int handle_client(struct fio_client *client);
93static void dec_jobs_eta(struct client_eta *eta);
94
95static void fio_client_add_hash(struct fio_client *client)
96{
97 int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
98
99 bucket &= FIO_CLIENT_HASH_MASK;
100 flist_add(&client->hash_list, &client_hash[bucket]);
101}
102
103static void fio_client_remove_hash(struct fio_client *client)
104{
105 if (!flist_empty(&client->hash_list))
106 flist_del_init(&client->hash_list);
107}
108
109static void fio_init fio_client_hash_init(void)
110{
111 int i;
112
113 for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
114 INIT_FLIST_HEAD(&client_hash[i]);
115}
116
117static struct fio_client *find_client_by_fd(int fd)
118{
119 int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
120 struct fio_client *client;
121 struct flist_head *entry;
122
123 flist_for_each(entry, &client_hash[bucket]) {
124 client = flist_entry(entry, struct fio_client, hash_list);
125
126 if (client->fd == fd) {
127 client->refs++;
128 return client;
129 }
130 }
131
132 return NULL;
133}
134
135static void remove_client(struct fio_client *client)
136{
137 assert(client->refs);
138
139 if (--client->refs)
140 return;
141
142 dprint(FD_NET, "client: removed <%s>\n", client->hostname);
143 flist_del(&client->list);
144
145 fio_client_remove_hash(client);
146
147 if (!flist_empty(&client->eta_list)) {
148 flist_del_init(&client->eta_list);
149 dec_jobs_eta(client->eta_in_flight);
150 }
151
152 free(client->hostname);
153 if (client->argv)
154 free(client->argv);
155 if (client->name)
156 free(client->name);
157 while (client->nr_ini_file)
158 free(client->ini_file[--client->nr_ini_file]);
159 if (client->ini_file)
160 free(client->ini_file);
161
162 free(client);
163 nr_clients--;
164 sum_stat_clients--;
165}
166
167static void put_client(struct fio_client *client)
168{
169 remove_client(client);
170}
171
172static void __fio_client_add_cmd_option(struct fio_client *client,
173 const char *opt)
174{
175 int index;
176
177 index = client->argc++;
178 client->argv = realloc(client->argv, sizeof(char *) * client->argc);
179 client->argv[index] = strdup(opt);
180 dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
181}
182
183void fio_client_add_cmd_option(void *cookie, const char *opt)
184{
185 struct fio_client *client = cookie;
186 struct flist_head *entry;
187
188 if (!client || !opt)
189 return;
190
191 __fio_client_add_cmd_option(client, opt);
192
193 /*
194 * Duplicate arguments to shared client group
195 */
196 flist_for_each(entry, &arg_list) {
197 client = flist_entry(entry, struct fio_client, arg_list);
198
199 __fio_client_add_cmd_option(client, opt);
200 }
201}
202
203void fio_client_add_ini_file(void *cookie, const char *ini_file)
204{
205 struct fio_client *client = cookie;
206 size_t new_size;
207
208 dprint(FD_NET, "client <%s>: add ini %s\n", client->hostname, ini_file);
209
210 new_size = (client->nr_ini_file + 1) * sizeof(char *);
211 client->ini_file = realloc(client->ini_file, new_size);
212 client->ini_file[client->nr_ini_file] = strdup(ini_file);
213 client->nr_ini_file++;
214}
215
216int fio_client_add(const char *hostname, void **cookie)
217{
218 struct fio_client *existing = *cookie;
219 struct fio_client *client;
220
221 if (existing) {
222 /*
223 * We always add our "exec" name as the option, hence 1
224 * means empty.
225 */
226 if (existing->argc == 1)
227 flist_add_tail(&existing->arg_list, &arg_list);
228 else {
229 while (!flist_empty(&arg_list))
230 flist_del_init(arg_list.next);
231 }
232 }
233
234 client = malloc(sizeof(*client));
235 memset(client, 0, sizeof(*client));
236
237 INIT_FLIST_HEAD(&client->list);
238 INIT_FLIST_HEAD(&client->hash_list);
239 INIT_FLIST_HEAD(&client->arg_list);
240 INIT_FLIST_HEAD(&client->eta_list);
241 INIT_FLIST_HEAD(&client->cmd_list);
242
243 if (fio_server_parse_string(hostname, &client->hostname,
244 &client->is_sock, &client->port,
245 &client->addr.sin_addr,
246 &client->addr6.sin6_addr,
247 &client->ipv6))
248 return -1;
249
250 client->fd = -1;
251 client->refs = 1;
252
253 __fio_client_add_cmd_option(client, "fio");
254
255 flist_add(&client->list, &client_list);
256 nr_clients++;
257 dprint(FD_NET, "client: added <%s>\n", client->hostname);
258 *cookie = client;
259 return 0;
260}
261
262static int fio_client_connect_ip(struct fio_client *client)
263{
264 struct sockaddr *addr;
265 fio_socklen_t socklen;
266 int fd, domain;
267
268 if (client->ipv6) {
269 client->addr6.sin6_family = AF_INET6;
270 client->addr6.sin6_port = htons(client->port);
271 domain = AF_INET6;
272 addr = (struct sockaddr *) &client->addr6;
273 socklen = sizeof(client->addr6);
274 } else {
275 client->addr.sin_family = AF_INET;
276 client->addr.sin_port = htons(client->port);
277 domain = AF_INET;
278 addr = (struct sockaddr *) &client->addr;
279 socklen = sizeof(client->addr);
280 }
281
282 fd = socket(domain, SOCK_STREAM, 0);
283 if (fd < 0) {
284 log_err("fio: socket: %s\n", strerror(errno));
285 return -1;
286 }
287
288 if (connect(fd, addr, socklen) < 0) {
289 log_err("fio: connect: %s\n", strerror(errno));
290 log_err("fio: failed to connect to %s:%u\n", client->hostname,
291 client->port);
292 close(fd);
293 return -1;
294 }
295
296 return fd;
297}
298
299static int fio_client_connect_sock(struct fio_client *client)
300{
301 struct sockaddr_un *addr = &client->addr_un;
302 fio_socklen_t len;
303 int fd;
304
305 memset(addr, 0, sizeof(*addr));
306 addr->sun_family = AF_UNIX;
307 strcpy(addr->sun_path, client->hostname);
308
309 fd = socket(AF_UNIX, SOCK_STREAM, 0);
310 if (fd < 0) {
311 log_err("fio: socket: %s\n", strerror(errno));
312 return -1;
313 }
314
315 len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
316 if (connect(fd, (struct sockaddr *) addr, len) < 0) {
317 log_err("fio: connect; %s\n", strerror(errno));
318 close(fd);
319 return -1;
320 }
321
322 return fd;
323}
324
325static int fio_client_connect(struct fio_client *client)
326{
327 int fd;
328
329 dprint(FD_NET, "client: connect to host %s\n", client->hostname);
330
331 if (client->is_sock)
332 fd = fio_client_connect_sock(client);
333 else
334 fd = fio_client_connect_ip(client);
335
336 dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
337
338 if (fd < 0)
339 return 1;
340
341 client->fd = fd;
342 fio_client_add_hash(client);
343 client->state = Client_connected;
344 return 0;
345}
346
347void fio_clients_terminate(void)
348{
349 struct flist_head *entry;
350 struct fio_client *client;
351
352 dprint(FD_NET, "client: terminate clients\n");
353
354 flist_for_each(entry, &client_list) {
355 client = flist_entry(entry, struct fio_client, list);
356
357 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0, NULL);
358 }
359}
360
361static void sig_int(int sig)
362{
363 dprint(FD_NET, "client: got signal %d\n", sig);
364 fio_clients_terminate();
365}
366
367static void sig_show_status(int sig)
368{
369 show_running_run_stats();
370}
371
372static void client_signal_handler(void)
373{
374 struct sigaction act;
375
376 memset(&act, 0, sizeof(act));
377 act.sa_handler = sig_int;
378 act.sa_flags = SA_RESTART;
379 sigaction(SIGINT, &act, NULL);
380
381 memset(&act, 0, sizeof(act));
382 act.sa_handler = sig_int;
383 act.sa_flags = SA_RESTART;
384 sigaction(SIGTERM, &act, NULL);
385
386/* Windows uses SIGBREAK as a quit signal from other applications */
387#ifdef WIN32
388 memset(&act, 0, sizeof(act));
389 act.sa_handler = sig_int;
390 act.sa_flags = SA_RESTART;
391 sigaction(SIGBREAK, &act, NULL);
392#endif
393
394 memset(&act, 0, sizeof(act));
395 act.sa_handler = sig_show_status;
396 act.sa_flags = SA_RESTART;
397 sigaction(SIGUSR1, &act, NULL);
398}
399
400static void probe_client(struct fio_client *client)
401{
402 dprint(FD_NET, "client: send probe\n");
403
404 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0, &client->cmd_list);
405}
406
407static int send_client_cmd_line(struct fio_client *client)
408{
409 struct cmd_single_line_pdu *cslp;
410 struct cmd_line_pdu *clp;
411 unsigned long offset;
412 unsigned int *lens;
413 void *pdu;
414 size_t mem;
415 int i, ret;
416
417 dprint(FD_NET, "client: send cmdline %d\n", client->argc);
418
419 lens = malloc(client->argc * sizeof(unsigned int));
420
421 /*
422 * Find out how much mem we need
423 */
424 for (i = 0, mem = 0; i < client->argc; i++) {
425 lens[i] = strlen(client->argv[i]) + 1;
426 mem += lens[i];
427 }
428
429 /*
430 * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
431 */
432 mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
433
434 pdu = malloc(mem);
435 clp = pdu;
436 offset = sizeof(*clp);
437
438 for (i = 0; i < client->argc; i++) {
439 uint16_t arg_len = lens[i];
440
441 cslp = pdu + offset;
442 strcpy((char *) cslp->text, client->argv[i]);
443 cslp->len = cpu_to_le16(arg_len);
444 offset += sizeof(*cslp) + arg_len;
445 }
446
447 free(lens);
448 clp->lines = cpu_to_le16(client->argc);
449 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, 0);
450 free(pdu);
451 return ret;
452}
453
454int fio_clients_connect(void)
455{
456 struct fio_client *client;
457 struct flist_head *entry, *tmp;
458 int ret;
459
460#ifdef WIN32
461 WSADATA wsd;
462 WSAStartup(MAKEWORD(2,2), &wsd);
463#endif
464
465 dprint(FD_NET, "client: connect all\n");
466
467 client_signal_handler();
468
469 flist_for_each_safe(entry, tmp, &client_list) {
470 client = flist_entry(entry, struct fio_client, list);
471
472 ret = fio_client_connect(client);
473 if (ret) {
474 remove_client(client);
475 continue;
476 }
477
478 probe_client(client);
479
480 if (client->argc > 1)
481 send_client_cmd_line(client);
482 }
483
484 return !nr_clients;
485}
486
487/*
488 * Send file contents to server backend. We could use sendfile(), but to remain
489 * more portable lets just read/write the darn thing.
490 */
491static int fio_client_send_ini(struct fio_client *client, const char *filename)
492{
493 struct stat sb;
494 char *p, *buf;
495 off_t len;
496 int fd, ret;
497
498 dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
499
500 fd = open(filename, O_RDONLY);
501 if (fd < 0) {
502 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
503 return 1;
504 }
505
506 if (fstat(fd, &sb) < 0) {
507 log_err("fio: job file stat: %s\n", strerror(errno));
508 close(fd);
509 return 1;
510 }
511
512 buf = malloc(sb.st_size);
513
514 len = sb.st_size;
515 p = buf;
516 do {
517 ret = read(fd, p, len);
518 if (ret > 0) {
519 len -= ret;
520 if (!len)
521 break;
522 p += ret;
523 continue;
524 } else if (!ret)
525 break;
526 else if (errno == EAGAIN || errno == EINTR)
527 continue;
528 } while (1);
529
530 if (len) {
531 log_err("fio: failed reading job file %s\n", filename);
532 close(fd);
533 free(buf);
534 return 1;
535 }
536
537 client->sent_job = 1;
538 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size, 0);
539 free(buf);
540 close(fd);
541 return ret;
542}
543
544int fio_clients_send_ini(const char *filename)
545{
546 struct fio_client *client;
547 struct flist_head *entry, *tmp;
548
549 flist_for_each_safe(entry, tmp, &client_list) {
550 client = flist_entry(entry, struct fio_client, list);
551
552 if (client->nr_ini_file) {
553 int i;
554
555 for (i = 0; i < client->nr_ini_file; i++) {
556 const char *ini = client->ini_file[i];
557
558 if (fio_client_send_ini(client, ini)) {
559 remove_client(client);
560 break;
561 }
562 }
563 } else if (!filename || fio_client_send_ini(client, filename))
564 remove_client(client);
565
566 client->sent_job = 1;
567 }
568
569 return !nr_clients;
570}
571
572static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
573{
574 dst->max_val = le64_to_cpu(src->max_val);
575 dst->min_val = le64_to_cpu(src->min_val);
576 dst->samples = le64_to_cpu(src->samples);
577
578 /*
579 * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
580 */
581 dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
582 dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
583}
584
585static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
586{
587 int i, j;
588
589 dst->error = le32_to_cpu(src->error);
590 dst->groupid = le32_to_cpu(src->groupid);
591 dst->pid = le32_to_cpu(src->pid);
592 dst->members = le32_to_cpu(src->members);
593
594 for (i = 0; i < 2; i++) {
595 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
596 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
597 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
598 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
599 }
600
601 dst->usr_time = le64_to_cpu(src->usr_time);
602 dst->sys_time = le64_to_cpu(src->sys_time);
603 dst->ctx = le64_to_cpu(src->ctx);
604 dst->minf = le64_to_cpu(src->minf);
605 dst->majf = le64_to_cpu(src->majf);
606 dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
607
608 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
609 fio_fp64_t *fps = &src->percentile_list[i];
610 fio_fp64_t *fpd = &dst->percentile_list[i];
611
612 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
613 }
614
615 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
616 dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
617 dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
618 dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
619 }
620
621 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
622 dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
623 dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
624 }
625
626 for (i = 0; i < 2; i++)
627 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
628 dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
629
630 for (i = 0; i < 3; i++) {
631 dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
632 dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
633 }
634
635 dst->total_submit = le64_to_cpu(src->total_submit);
636 dst->total_complete = le64_to_cpu(src->total_complete);
637
638 for (i = 0; i < 2; i++) {
639 dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
640 dst->runtime[i] = le64_to_cpu(src->runtime[i]);
641 }
642
643 dst->total_run_time = le64_to_cpu(src->total_run_time);
644 dst->continue_on_error = le16_to_cpu(src->continue_on_error);
645 dst->total_err_count = le64_to_cpu(src->total_err_count);
646 dst->first_error = le32_to_cpu(src->first_error);
647 dst->kb_base = le32_to_cpu(src->kb_base);
648}
649
650static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
651{
652 int i;
653
654 for (i = 0; i < 2; i++) {
655 dst->max_run[i] = le64_to_cpu(src->max_run[i]);
656 dst->min_run[i] = le64_to_cpu(src->min_run[i]);
657 dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
658 dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
659 dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
660 dst->agg[i] = le64_to_cpu(src->agg[i]);
661 }
662
663 dst->kb_base = le32_to_cpu(src->kb_base);
664 dst->groupid = le32_to_cpu(src->groupid);
665}
666
667static void handle_ts(struct fio_net_cmd *cmd)
668{
669 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
670
671 convert_ts(&p->ts, &p->ts);
672 convert_gs(&p->rs, &p->rs);
673
674 show_thread_status(&p->ts, &p->rs);
675
676 if (sum_stat_clients == 1)
677 return;
678
679 sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
680 sum_group_stats(&client_gs, &p->rs);
681
682 client_ts.members++;
683 client_ts.groupid = p->ts.groupid;
684
685 if (++sum_stat_nr == sum_stat_clients) {
686 strcpy(client_ts.name, "All clients");
687 show_thread_status(&client_ts, &client_gs);
688 }
689}
690
691static void handle_gs(struct fio_net_cmd *cmd)
692{
693 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
694
695 convert_gs(gs, gs);
696 show_group_stats(gs);
697}
698
699static void convert_agg(struct disk_util_agg *agg)
700{
701 int i;
702
703 for (i = 0; i < 2; i++) {
704 agg->ios[i] = le32_to_cpu(agg->ios[i]);
705 agg->merges[i] = le32_to_cpu(agg->merges[i]);
706 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
707 agg->ticks[i] = le32_to_cpu(agg->ticks[i]);
708 }
709
710 agg->io_ticks = le32_to_cpu(agg->io_ticks);
711 agg->time_in_queue = le32_to_cpu(agg->time_in_queue);
712 agg->slavecount = le32_to_cpu(agg->slavecount);
713 agg->max_util.u.f = fio_uint64_to_double(__le64_to_cpu(agg->max_util.u.i));
714}
715
716static void convert_dus(struct disk_util_stat *dus)
717{
718 int i;
719
720 for (i = 0; i < 2; i++) {
721 dus->ios[i] = le32_to_cpu(dus->ios[i]);
722 dus->merges[i] = le32_to_cpu(dus->merges[i]);
723 dus->sectors[i] = le64_to_cpu(dus->sectors[i]);
724 dus->ticks[i] = le32_to_cpu(dus->ticks[i]);
725 }
726
727 dus->io_ticks = le32_to_cpu(dus->io_ticks);
728 dus->time_in_queue = le32_to_cpu(dus->time_in_queue);
729 dus->msec = le64_to_cpu(dus->msec);
730}
731
732static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
733{
734 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
735
736 convert_dus(&du->dus);
737 convert_agg(&du->agg);
738
739 if (!client->disk_stats_shown) {
740 client->disk_stats_shown = 1;
741 log_info("\nDisk stats (read/write):\n");
742 }
743
744 print_disk_util(&du->dus, &du->agg, output_format == FIO_OUTPUT_TERSE);
745}
746
747static void convert_jobs_eta(struct jobs_eta *je)
748{
749 int i;
750
751 je->nr_running = le32_to_cpu(je->nr_running);
752 je->nr_ramp = le32_to_cpu(je->nr_ramp);
753 je->nr_pending = le32_to_cpu(je->nr_pending);
754 je->files_open = le32_to_cpu(je->files_open);
755 je->m_rate = le32_to_cpu(je->m_rate);
756 je->t_rate = le32_to_cpu(je->t_rate);
757 je->m_iops = le32_to_cpu(je->m_iops);
758 je->t_iops = le32_to_cpu(je->t_iops);
759
760 for (i = 0; i < 2; i++) {
761 je->rate[i] = le32_to_cpu(je->rate[i]);
762 je->iops[i] = le32_to_cpu(je->iops[i]);
763 }
764
765 je->elapsed_sec = le64_to_cpu(je->elapsed_sec);
766 je->eta_sec = le64_to_cpu(je->eta_sec);
767 je->is_pow2 = le32_to_cpu(je->is_pow2);
768}
769
770static void sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
771{
772 int i;
773
774 dst->nr_running += je->nr_running;
775 dst->nr_ramp += je->nr_ramp;
776 dst->nr_pending += je->nr_pending;
777 dst->files_open += je->files_open;
778 dst->m_rate += je->m_rate;
779 dst->t_rate += je->t_rate;
780 dst->m_iops += je->m_iops;
781 dst->t_iops += je->t_iops;
782
783 for (i = 0; i < 2; i++) {
784 dst->rate[i] += je->rate[i];
785 dst->iops[i] += je->iops[i];
786 }
787
788 dst->elapsed_sec += je->elapsed_sec;
789
790 if (je->eta_sec > dst->eta_sec)
791 dst->eta_sec = je->eta_sec;
792}
793
794static void dec_jobs_eta(struct client_eta *eta)
795{
796 if (!--eta->pending) {
797 display_thread_status(&eta->eta);
798 free(eta);
799 }
800}
801
802static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
803{
804 struct fio_net_int_cmd *icmd = NULL;
805 struct flist_head *entry;
806
807 flist_for_each(entry, &client->cmd_list) {
808 icmd = flist_entry(entry, struct fio_net_int_cmd, list);
809
810 if (cmd->tag == (uintptr_t) icmd)
811 break;
812
813 icmd = NULL;
814 }
815
816 if (!icmd) {
817 log_err("fio: client: unable to find matching tag\n");
818 return;
819 }
820
821 flist_del(&icmd->list);
822 cmd->tag = icmd->saved_tag;
823 free(icmd);
824}
825
826static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
827{
828 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
829 struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
830
831 dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
832
833 assert(client->eta_in_flight == eta);
834
835 client->eta_in_flight = NULL;
836 flist_del_init(&client->eta_list);
837
838 convert_jobs_eta(je);
839 sum_jobs_eta(&eta->eta, je);
840 dec_jobs_eta(eta);
841}
842
843static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
844{
845 struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
846 const char *os, *arch;
847 char bit[16];
848
849 os = fio_get_os_string(probe->os);
850 if (!os)
851 os = "unknown";
852
853 arch = fio_get_arch_string(probe->arch);
854 if (!arch)
855 os = "unknown";
856
857 sprintf(bit, "%d-bit", probe->bpp * 8);
858
859 log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s\n",
860 probe->hostname, probe->bigendian, bit, os, arch,
861 probe->fio_version);
862
863 if (!client->name)
864 client->name = strdup((char *) probe->hostname);
865}
866
867static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
868{
869 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
870
871 client->state = Client_started;
872 client->jobs = le32_to_cpu(pdu->jobs);
873}
874
875static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
876{
877 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
878
879 client->state = Client_stopped;
880 client->error = le32_to_cpu(pdu->error);
881
882 if (client->error)
883 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
884}
885
886static int handle_client(struct fio_client *client)
887{
888 struct fio_net_cmd *cmd;
889
890 dprint(FD_NET, "client: handle %s\n", client->hostname);
891
892 cmd = fio_net_recv_cmd(client->fd);
893 if (!cmd)
894 return 0;
895
896 dprint(FD_NET, "client: got cmd op %s from %s\n",
897 fio_server_op(cmd->opcode), client->hostname);
898
899 switch (cmd->opcode) {
900 case FIO_NET_CMD_QUIT:
901 remove_client(client);
902 free(cmd);
903 break;
904 case FIO_NET_CMD_TEXT: {
905 const char *buf = (const char *) cmd->payload;
906 const char *name;
907 int fio_unused ret;
908
909 name = client->name ? client->name : client->hostname;
910
911 if (!client->skip_newline)
912 fprintf(f_out, "<%s> ", name);
913 ret = fwrite(buf, cmd->pdu_len, 1, f_out);
914 fflush(f_out);
915 client->skip_newline = strchr(buf, '\n') == NULL;
916 free(cmd);
917 break;
918 }
919 case FIO_NET_CMD_DU:
920 handle_du(client, cmd);
921 free(cmd);
922 break;
923 case FIO_NET_CMD_TS:
924 handle_ts(cmd);
925 free(cmd);
926 break;
927 case FIO_NET_CMD_GS:
928 handle_gs(cmd);
929 free(cmd);
930 break;
931 case FIO_NET_CMD_ETA:
932 remove_reply_cmd(client, cmd);
933 handle_eta(client, cmd);
934 free(cmd);
935 break;
936 case FIO_NET_CMD_PROBE:
937 remove_reply_cmd(client, cmd);
938 handle_probe(client, cmd);
939 free(cmd);
940 break;
941 case FIO_NET_CMD_RUN:
942 client->state = Client_running;
943 free(cmd);
944 break;
945 case FIO_NET_CMD_START:
946 handle_start(client, cmd);
947 free(cmd);
948 break;
949 case FIO_NET_CMD_STOP:
950 handle_stop(client, cmd);
951 free(cmd);
952 break;
953 default:
954 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
955 free(cmd);
956 break;
957 }
958
959 return 1;
960}
961
962static void request_client_etas(void)
963{
964 struct fio_client *client;
965 struct flist_head *entry;
966 struct client_eta *eta;
967 int skipped = 0;
968
969 dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
970
971 eta = malloc(sizeof(*eta));
972 memset(&eta->eta, 0, sizeof(eta->eta));
973 eta->pending = nr_clients;
974
975 flist_for_each(entry, &client_list) {
976 client = flist_entry(entry, struct fio_client, list);
977
978 if (!flist_empty(&client->eta_list)) {
979 skipped++;
980 continue;
981 }
982 if (client->state != Client_running)
983 continue;
984
985 assert(!client->eta_in_flight);
986 flist_add_tail(&client->eta_list, &eta_list);
987 client->eta_in_flight = eta;
988 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
989 (uintptr_t) eta, &client->cmd_list);
990 }
991
992 while (skipped--)
993 dec_jobs_eta(eta);
994
995 dprint(FD_NET, "client: requested eta tag %p\n", eta);
996}
997
998static int client_check_cmd_timeout(struct fio_client *client,
999 struct timeval *now)
1000{
1001 struct fio_net_int_cmd *cmd;
1002 struct flist_head *entry, *tmp;
1003 int ret = 0;
1004
1005 flist_for_each_safe(entry, tmp, &client->cmd_list) {
1006 cmd = flist_entry(entry, struct fio_net_int_cmd, list);
1007
1008 if (mtime_since(&cmd->tv, now) < FIO_NET_CLIENT_TIMEOUT)
1009 continue;
1010
1011 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
1012 fio_server_op(cmd->cmd.opcode));
1013 flist_del(&cmd->list);
1014 free(cmd);
1015 ret = 1;
1016 }
1017
1018 return flist_empty(&client->cmd_list) && ret;
1019}
1020
1021static int fio_client_timed_out(void)
1022{
1023 struct fio_client *client;
1024 struct flist_head *entry, *tmp;
1025 struct timeval tv;
1026 int ret = 0;
1027
1028 gettimeofday(&tv, NULL);
1029
1030 flist_for_each_safe(entry, tmp, &client_list) {
1031 client = flist_entry(entry, struct fio_client, list);
1032
1033 if (flist_empty(&client->cmd_list))
1034 continue;
1035
1036 if (!client_check_cmd_timeout(client, &tv))
1037 continue;
1038
1039 log_err("fio: client %s timed out\n", client->hostname);
1040 remove_client(client);
1041 ret = 1;
1042 }
1043
1044 return ret;
1045}
1046
1047int fio_handle_clients(void)
1048{
1049 struct pollfd *pfds;
1050 int i, ret = 0, retval = 0;
1051
1052 gettimeofday(&eta_tv, NULL);
1053
1054 pfds = malloc(nr_clients * sizeof(struct pollfd));
1055
1056 sum_stat_clients = nr_clients;
1057 init_thread_stat(&client_ts);
1058 init_group_run_stat(&client_gs);
1059
1060 while (!exit_backend && nr_clients) {
1061 struct flist_head *entry, *tmp;
1062 struct fio_client *client;
1063
1064 i = 0;
1065 flist_for_each_safe(entry, tmp, &client_list) {
1066 client = flist_entry(entry, struct fio_client, list);
1067
1068 if (!client->sent_job &&
1069 flist_empty(&client->cmd_list)) {
1070 remove_client(client);
1071 continue;
1072 }
1073
1074 pfds[i].fd = client->fd;
1075 pfds[i].events = POLLIN;
1076 i++;
1077 }
1078
1079 if (!nr_clients)
1080 break;
1081
1082 assert(i == nr_clients);
1083
1084 do {
1085 struct timeval tv;
1086
1087 gettimeofday(&tv, NULL);
1088 if (mtime_since(&eta_tv, &tv) >= 900) {
1089 request_client_etas();
1090 memcpy(&eta_tv, &tv, sizeof(tv));
1091
1092 if (fio_client_timed_out())
1093 break;
1094 }
1095
1096 ret = poll(pfds, nr_clients, 100);
1097 if (ret < 0) {
1098 if (errno == EINTR)
1099 continue;
1100 log_err("fio: poll clients: %s\n", strerror(errno));
1101 break;
1102 } else if (!ret)
1103 continue;
1104 } while (ret <= 0);
1105
1106 for (i = 0; i < nr_clients; i++) {
1107 if (!(pfds[i].revents & POLLIN))
1108 continue;
1109
1110 client = find_client_by_fd(pfds[i].fd);
1111 if (!client) {
1112 log_err("fio: unknown client fd %d\n", pfds[i].fd);
1113 continue;
1114 }
1115 if (!handle_client(client)) {
1116 log_info("client: host=%s disconnected\n",
1117 client->hostname);
1118 remove_client(client);
1119 retval = 1;
1120 } else if (client->error)
1121 retval = 1;
1122 put_client(client);
1123 }
1124 }
1125
1126 free(pfds);
1127 return retval;
1128}
fio - Flexible IO Tester