blob: 83cb57ea033ecd039a1c1331b27178d1a77bd9cc [file] [log] [blame]
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/poll.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <signal.h>
#include "fio.h"
#include "server.h"
#include "flist.h"
#include "hash.h"
struct client_eta {
unsigned int pending;
struct jobs_eta eta;
};
struct fio_client {
struct flist_head list;
struct flist_head hash_list;
struct flist_head arg_list;
union {
struct sockaddr_in addr;
struct sockaddr_in6 addr6;
struct sockaddr_un addr_un;
};
char *hostname;
int port;
int fd;
unsigned int refs;
char *name;
int state;
int skip_newline;
int is_sock;
int disk_stats_shown;
unsigned int jobs;
unsigned int nr_stat;
int error;
int ipv6;
int sent_job;
int did_stat;
struct flist_head eta_list;
struct client_eta *eta_in_flight;
struct flist_head cmd_list;
uint16_t argc;
char **argv;
char **ini_file;
unsigned int nr_ini_file;
};
static struct timeval eta_tv;
enum {
Client_created = 0,
Client_connected = 1,
Client_started = 2,
Client_running = 3,
Client_stopped = 4,
Client_exited = 5,
};
static FLIST_HEAD(client_list);
static FLIST_HEAD(eta_list);
static FLIST_HEAD(arg_list);
static struct thread_stat client_ts;
static struct group_run_stats client_gs;
static int sum_stat_clients = 0;
static int sum_stat_nr;
static int do_output_all_clients;
#define FIO_CLIENT_HASH_BITS 7
#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
static int handle_client(struct fio_client *client);
static void dec_jobs_eta(struct client_eta *eta);
static void fio_client_add_hash(struct fio_client *client)
{
int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
bucket &= FIO_CLIENT_HASH_MASK;
flist_add(&client->hash_list, &client_hash[bucket]);
}
static void fio_client_remove_hash(struct fio_client *client)
{
if (!flist_empty(&client->hash_list))
flist_del_init(&client->hash_list);
}
static void fio_init fio_client_hash_init(void)
{
int i;
for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
INIT_FLIST_HEAD(&client_hash[i]);
}
static struct fio_client *find_client_by_fd(int fd)
{
int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
struct fio_client *client;
struct flist_head *entry;
flist_for_each(entry, &client_hash[bucket]) {
client = flist_entry(entry, struct fio_client, hash_list);
if (client->fd == fd) {
client->refs++;
return client;
}
}
return NULL;
}
static void remove_client(struct fio_client *client)
{
assert(client->refs);
if (--client->refs)
return;
dprint(FD_NET, "client: removed <%s>\n", client->hostname);
flist_del(&client->list);
fio_client_remove_hash(client);
if (!flist_empty(&client->eta_list)) {
flist_del_init(&client->eta_list);
dec_jobs_eta(client->eta_in_flight);
}
free(client->hostname);
if (client->argv)
free(client->argv);
if (client->name)
free(client->name);
while (client->nr_ini_file)
free(client->ini_file[--client->nr_ini_file]);
if (client->ini_file)
free(client->ini_file);
if (!client->did_stat)
sum_stat_clients -= client->nr_stat;
free(client);
nr_clients--;
}
static void put_client(struct fio_client *client)
{
remove_client(client);
}
static void __fio_client_add_cmd_option(struct fio_client *client,
const char *opt)
{
int index;
index = client->argc++;
client->argv = realloc(client->argv, sizeof(char *) * client->argc);
client->argv[index] = strdup(opt);
dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
}
void fio_client_add_cmd_option(void *cookie, const char *opt)
{
struct fio_client *client = cookie;
struct flist_head *entry;
if (!client || !opt)
return;
__fio_client_add_cmd_option(client, opt);
/*
* Duplicate arguments to shared client group
*/
flist_for_each(entry, &arg_list) {
client = flist_entry(entry, struct fio_client, arg_list);
__fio_client_add_cmd_option(client, opt);
}
}
void fio_client_add_ini_file(void *cookie, const char *ini_file)
{
struct fio_client *client = cookie;
size_t new_size;
dprint(FD_NET, "client <%s>: add ini %s\n", client->hostname, ini_file);
new_size = (client->nr_ini_file + 1) * sizeof(char *);
client->ini_file = realloc(client->ini_file, new_size);
client->ini_file[client->nr_ini_file] = strdup(ini_file);
client->nr_ini_file++;
}
int fio_client_add(const char *hostname, void **cookie)
{
struct fio_client *existing = *cookie;
struct fio_client *client;
if (existing) {
/*
* We always add our "exec" name as the option, hence 1
* means empty.
*/
if (existing->argc == 1)
flist_add_tail(&existing->arg_list, &arg_list);
else {
while (!flist_empty(&arg_list))
flist_del_init(arg_list.next);
}
}
client = malloc(sizeof(*client));
memset(client, 0, sizeof(*client));
INIT_FLIST_HEAD(&client->list);
INIT_FLIST_HEAD(&client->hash_list);
INIT_FLIST_HEAD(&client->arg_list);
INIT_FLIST_HEAD(&client->eta_list);
INIT_FLIST_HEAD(&client->cmd_list);
if (fio_server_parse_string(hostname, &client->hostname,
&client->is_sock, &client->port,
&client->addr.sin_addr,
&client->addr6.sin6_addr,
&client->ipv6))
return -1;
client->fd = -1;
client->refs = 1;
__fio_client_add_cmd_option(client, "fio");
flist_add(&client->list, &client_list);
nr_clients++;
dprint(FD_NET, "client: added <%s>\n", client->hostname);
*cookie = client;
return 0;
}
static int fio_client_connect_ip(struct fio_client *client)
{
struct sockaddr *addr;
socklen_t socklen;
int fd, domain;
if (client->ipv6) {
client->addr6.sin6_family = AF_INET6;
client->addr6.sin6_port = htons(client->port);
domain = AF_INET6;
addr = (struct sockaddr *) &client->addr6;
socklen = sizeof(client->addr6);
} else {
client->addr.sin_family = AF_INET;
client->addr.sin_port = htons(client->port);
domain = AF_INET;
addr = (struct sockaddr *) &client->addr;
socklen = sizeof(client->addr);
}
fd = socket(domain, SOCK_STREAM, 0);
if (fd < 0) {
log_err("fio: socket: %s\n", strerror(errno));
return -1;
}
if (connect(fd, addr, socklen) < 0) {
log_err("fio: connect: %s\n", strerror(errno));
log_err("fio: failed to connect to %s:%u\n", client->hostname,
client->port);
close(fd);
return -1;
}
return fd;
}
static int fio_client_connect_sock(struct fio_client *client)
{
struct sockaddr_un *addr = &client->addr_un;
socklen_t len;
int fd;
memset(addr, 0, sizeof(*addr));
addr->sun_family = AF_UNIX;
strcpy(addr->sun_path, client->hostname);
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0) {
log_err("fio: socket: %s\n", strerror(errno));
return -1;
}
len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
if (connect(fd, (struct sockaddr *) addr, len) < 0) {
log_err("fio: connect; %s\n", strerror(errno));
close(fd);
return -1;
}
return fd;
}
static int fio_client_connect(struct fio_client *client)
{
int fd;
dprint(FD_NET, "client: connect to host %s\n", client->hostname);
if (client->is_sock)
fd = fio_client_connect_sock(client);
else
fd = fio_client_connect_ip(client);
dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
if (fd < 0)
return 1;
client->fd = fd;
fio_client_add_hash(client);
client->state = Client_connected;
return 0;
}
void fio_clients_terminate(void)
{
struct flist_head *entry;
struct fio_client *client;
dprint(FD_NET, "client: terminate clients\n");
flist_for_each(entry, &client_list) {
client = flist_entry(entry, struct fio_client, list);
fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0, NULL);
}
}
static void sig_int(int sig)
{
dprint(FD_NET, "client: got signal %d\n", sig);
fio_clients_terminate();
}
static void sig_show_status(int sig)
{
show_running_run_stats();
}
static void client_signal_handler(void)
{
struct sigaction act;
memset(&act, 0, sizeof(act));
act.sa_handler = sig_int;
act.sa_flags = SA_RESTART;
sigaction(SIGINT, &act, NULL);
memset(&act, 0, sizeof(act));
act.sa_handler = sig_int;
act.sa_flags = SA_RESTART;
sigaction(SIGTERM, &act, NULL);
/* Windows uses SIGBREAK as a quit signal from other applications */
#ifdef WIN32
memset(&act, 0, sizeof(act));
act.sa_handler = sig_int;
act.sa_flags = SA_RESTART;
sigaction(SIGBREAK, &act, NULL);
#endif
memset(&act, 0, sizeof(act));
act.sa_handler = sig_show_status;
act.sa_flags = SA_RESTART;
sigaction(SIGUSR1, &act, NULL);
}
static void probe_client(struct fio_client *client)
{
dprint(FD_NET, "client: send probe\n");
fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0, &client->cmd_list);
}
static int send_client_cmd_line(struct fio_client *client)
{
struct cmd_single_line_pdu *cslp;
struct cmd_line_pdu *clp;
unsigned long offset;
unsigned int *lens;
void *pdu;
size_t mem;
int i, ret;
dprint(FD_NET, "client: send cmdline %d\n", client->argc);
lens = malloc(client->argc * sizeof(unsigned int));
/*
* Find out how much mem we need
*/
for (i = 0, mem = 0; i < client->argc; i++) {
lens[i] = strlen(client->argv[i]) + 1;
mem += lens[i];
}
/*
* We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
*/
mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
pdu = malloc(mem);
clp = pdu;
offset = sizeof(*clp);
for (i = 0; i < client->argc; i++) {
uint16_t arg_len = lens[i];
cslp = pdu + offset;
strcpy((char *) cslp->text, client->argv[i]);
cslp->len = cpu_to_le16(arg_len);
offset += sizeof(*cslp) + arg_len;
}
free(lens);
clp->lines = cpu_to_le16(client->argc);
ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, 0);
free(pdu);
return ret;
}
int fio_clients_connect(void)
{
struct fio_client *client;
struct flist_head *entry, *tmp;
int ret;
#ifdef WIN32
WSADATA wsd;
WSAStartup(MAKEWORD(2,2), &wsd);
#endif
dprint(FD_NET, "client: connect all\n");
client_signal_handler();
flist_for_each_safe(entry, tmp, &client_list) {
client = flist_entry(entry, struct fio_client, list);
ret = fio_client_connect(client);
if (ret) {
remove_client(client);
continue;
}
probe_client(client);
if (client->argc > 1)
send_client_cmd_line(client);
}
return !nr_clients;
}
/*
* Send file contents to server backend. We could use sendfile(), but to remain
* more portable lets just read/write the darn thing.
*/
static int fio_client_send_ini(struct fio_client *client, const char *filename)
{
struct stat sb;
char *p, *buf;
off_t len;
int fd, ret;
dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
fd = open(filename, O_RDONLY);
if (fd < 0) {
log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
return 1;
}
if (fstat(fd, &sb) < 0) {
log_err("fio: job file stat: %s\n", strerror(errno));
close(fd);
return 1;
}
buf = malloc(sb.st_size);
len = sb.st_size;
p = buf;
do {
ret = read(fd, p, len);
if (ret > 0) {
len -= ret;
if (!len)
break;
p += ret;
continue;
} else if (!ret)
break;
else if (errno == EAGAIN || errno == EINTR)
continue;
} while (1);
if (len) {
log_err("fio: failed reading job file %s\n", filename);
close(fd);
free(buf);
return 1;
}
client->sent_job = 1;
ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size, 0);
free(buf);
close(fd);
return ret;
}
int fio_clients_send_ini(const char *filename)
{
struct fio_client *client;
struct flist_head *entry, *tmp;
flist_for_each_safe(entry, tmp, &client_list) {
client = flist_entry(entry, struct fio_client, list);
if (client->nr_ini_file) {
int i;
for (i = 0; i < client->nr_ini_file; i++) {
const char *ini = client->ini_file[i];
if (fio_client_send_ini(client, ini)) {
remove_client(client);
break;
}
}
} else if (!filename || fio_client_send_ini(client, filename))
remove_client(client);
client->sent_job = 1;
}
return !nr_clients;
}
static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
{
dst->max_val = le64_to_cpu(src->max_val);
dst->min_val = le64_to_cpu(src->min_val);
dst->samples = le64_to_cpu(src->samples);
/*
* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
*/
dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
}
static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
{
int i, j;
dst->error = le32_to_cpu(src->error);
dst->groupid = le32_to_cpu(src->groupid);
dst->pid = le32_to_cpu(src->pid);
dst->members = le32_to_cpu(src->members);
for (i = 0; i < 2; i++) {
convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
}
dst->usr_time = le64_to_cpu(src->usr_time);
dst->sys_time = le64_to_cpu(src->sys_time);
dst->ctx = le64_to_cpu(src->ctx);
dst->minf = le64_to_cpu(src->minf);
dst->majf = le64_to_cpu(src->majf);
dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
fio_fp64_t *fps = &src->percentile_list[i];
fio_fp64_t *fpd = &dst->percentile_list[i];
fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
}
for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
}
for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
}
for (i = 0; i < 2; i++)
for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
for (i = 0; i < 3; i++) {
dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
}
dst->total_submit = le64_to_cpu(src->total_submit);
dst->total_complete = le64_to_cpu(src->total_complete);
for (i = 0; i < 2; i++) {
dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
dst->runtime[i] = le64_to_cpu(src->runtime[i]);
}
dst->total_run_time = le64_to_cpu(src->total_run_time);
dst->continue_on_error = le16_to_cpu(src->continue_on_error);
dst->total_err_count = le64_to_cpu(src->total_err_count);
dst->first_error = le32_to_cpu(src->first_error);
dst->kb_base = le32_to_cpu(src->kb_base);
}
static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
{
int i;
for (i = 0; i < 2; i++) {
dst->max_run[i] = le64_to_cpu(src->max_run[i]);
dst->min_run[i] = le64_to_cpu(src->min_run[i]);
dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
dst->agg[i] = le64_to_cpu(src->agg[i]);
}
dst->kb_base = le32_to_cpu(src->kb_base);
dst->groupid = le32_to_cpu(src->groupid);
}
static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd)
{
struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
convert_ts(&p->ts, &p->ts);
convert_gs(&p->rs, &p->rs);
show_thread_status(&p->ts, &p->rs);
client->did_stat = 1;
if (!do_output_all_clients)
return;
sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
sum_group_stats(&client_gs, &p->rs);
client_ts.members++;
client_ts.groupid = p->ts.groupid;
if (++sum_stat_nr == sum_stat_clients) {
strcpy(client_ts.name, "All clients");
show_thread_status(&client_ts, &client_gs);
}
}
static void handle_gs(struct fio_net_cmd *cmd)
{
struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
convert_gs(gs, gs);
show_group_stats(gs);
}
static void convert_agg(struct disk_util_agg *agg)
{
int i;
for (i = 0; i < 2; i++) {
agg->ios[i] = le32_to_cpu(agg->ios[i]);
agg->merges[i] = le32_to_cpu(agg->merges[i]);
agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
agg->ticks[i] = le32_to_cpu(agg->ticks[i]);
}
agg->io_ticks = le32_to_cpu(agg->io_ticks);
agg->time_in_queue = le32_to_cpu(agg->time_in_queue);
agg->slavecount = le32_to_cpu(agg->slavecount);
agg->max_util.u.f = fio_uint64_to_double(__le64_to_cpu(agg->max_util.u.i));
}
static void convert_dus(struct disk_util_stat *dus)
{
int i;
for (i = 0; i < 2; i++) {
dus->ios[i] = le32_to_cpu(dus->ios[i]);
dus->merges[i] = le32_to_cpu(dus->merges[i]);
dus->sectors[i] = le64_to_cpu(dus->sectors[i]);
dus->ticks[i] = le32_to_cpu(dus->ticks[i]);
}
dus->io_ticks = le32_to_cpu(dus->io_ticks);
dus->time_in_queue = le32_to_cpu(dus->time_in_queue);
dus->msec = le64_to_cpu(dus->msec);
}
static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
{
struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
convert_dus(&du->dus);
convert_agg(&du->agg);
if (!client->disk_stats_shown) {
client->disk_stats_shown = 1;
log_info("\nDisk stats (read/write):\n");
}
print_disk_util(&du->dus, &du->agg, output_format == FIO_OUTPUT_TERSE);
}
static void convert_jobs_eta(struct jobs_eta *je)
{
int i;
je->nr_running = le32_to_cpu(je->nr_running);
je->nr_ramp = le32_to_cpu(je->nr_ramp);
je->nr_pending = le32_to_cpu(je->nr_pending);
je->files_open = le32_to_cpu(je->files_open);
je->m_rate = le32_to_cpu(je->m_rate);
je->t_rate = le32_to_cpu(je->t_rate);
je->m_iops = le32_to_cpu(je->m_iops);
je->t_iops = le32_to_cpu(je->t_iops);
for (i = 0; i < 2; i++) {
je->rate[i] = le32_to_cpu(je->rate[i]);
je->iops[i] = le32_to_cpu(je->iops[i]);
}
je->elapsed_sec = le64_to_cpu(je->elapsed_sec);
je->eta_sec = le64_to_cpu(je->eta_sec);
je->is_pow2 = le32_to_cpu(je->is_pow2);
}
static void sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
{
int i;
dst->nr_running += je->nr_running;
dst->nr_ramp += je->nr_ramp;
dst->nr_pending += je->nr_pending;
dst->files_open += je->files_open;
dst->m_rate += je->m_rate;
dst->t_rate += je->t_rate;
dst->m_iops += je->m_iops;
dst->t_iops += je->t_iops;
for (i = 0; i < 2; i++) {
dst->rate[i] += je->rate[i];
dst->iops[i] += je->iops[i];
}
dst->elapsed_sec += je->elapsed_sec;
if (je->eta_sec > dst->eta_sec)
dst->eta_sec = je->eta_sec;
}
static void dec_jobs_eta(struct client_eta *eta)
{
if (!--eta->pending) {
display_thread_status(&eta->eta);
free(eta);
}
}
static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
{
struct fio_net_int_cmd *icmd = NULL;
struct flist_head *entry;
flist_for_each(entry, &client->cmd_list) {
icmd = flist_entry(entry, struct fio_net_int_cmd, list);
if (cmd->tag == (uintptr_t) icmd)
break;
icmd = NULL;
}
if (!icmd) {
log_err("fio: client: unable to find matching tag\n");
return;
}
flist_del(&icmd->list);
cmd->tag = icmd->saved_tag;
free(icmd);
}
static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
{
struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
assert(client->eta_in_flight == eta);
client->eta_in_flight = NULL;
flist_del_init(&client->eta_list);
convert_jobs_eta(je);
sum_jobs_eta(&eta->eta, je);
dec_jobs_eta(eta);
}
static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
{
struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
const char *os, *arch;
char bit[16];
os = fio_get_os_string(probe->os);
if (!os)
os = "unknown";
arch = fio_get_arch_string(probe->arch);
if (!arch)
os = "unknown";
sprintf(bit, "%d-bit", probe->bpp * 8);
log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s\n",
probe->hostname, probe->bigendian, bit, os, arch,
probe->fio_version);
if (!client->name)
client->name = strdup((char *) probe->hostname);
}
static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
{
struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
client->state = Client_started;
client->jobs = le32_to_cpu(pdu->jobs);
client->nr_stat = le32_to_cpu(pdu->stat_outputs);
if (sum_stat_clients > 1)
do_output_all_clients = 1;
sum_stat_clients += client->nr_stat;
}
static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
{
struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
client->state = Client_stopped;
client->error = le32_to_cpu(pdu->error);
if (client->error)
log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
}
static int handle_client(struct fio_client *client)
{
struct fio_net_cmd *cmd;
dprint(FD_NET, "client: handle %s\n", client->hostname);
cmd = fio_net_recv_cmd(client->fd);
if (!cmd)
return 0;
dprint(FD_NET, "client: got cmd op %s from %s\n",
fio_server_op(cmd->opcode), client->hostname);
switch (cmd->opcode) {
case FIO_NET_CMD_QUIT:
remove_client(client);
free(cmd);
break;
case FIO_NET_CMD_TEXT: {
const char *buf = (const char *) cmd->payload;
const char *name;
int fio_unused ret;
name = client->name ? client->name : client->hostname;
if (!client->skip_newline)
fprintf(f_out, "<%s> ", name);
ret = fwrite(buf, cmd->pdu_len, 1, f_out);
fflush(f_out);
client->skip_newline = strchr(buf, '\n') == NULL;
free(cmd);
break;
}
case FIO_NET_CMD_DU:
handle_du(client, cmd);
free(cmd);
break;
case FIO_NET_CMD_TS:
handle_ts(client, cmd);
free(cmd);
break;
case FIO_NET_CMD_GS:
handle_gs(cmd);
free(cmd);
break;
case FIO_NET_CMD_ETA:
remove_reply_cmd(client, cmd);
handle_eta(client, cmd);
free(cmd);
break;
case FIO_NET_CMD_PROBE:
remove_reply_cmd(client, cmd);
handle_probe(client, cmd);
free(cmd);
break;
case FIO_NET_CMD_RUN:
client->state = Client_running;
free(cmd);
break;
case FIO_NET_CMD_START:
handle_start(client, cmd);
free(cmd);
break;
case FIO_NET_CMD_STOP:
handle_stop(client, cmd);
free(cmd);
break;
default:
log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
free(cmd);
break;
}
return 1;
}
static void request_client_etas(void)
{
struct fio_client *client;
struct flist_head *entry;
struct client_eta *eta;
int skipped = 0;
dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
eta = malloc(sizeof(*eta));
memset(&eta->eta, 0, sizeof(eta->eta));
eta->pending = nr_clients;
flist_for_each(entry, &client_list) {
client = flist_entry(entry, struct fio_client, list);
if (!flist_empty(&client->eta_list)) {
skipped++;
continue;
}
if (client->state != Client_running)
continue;
assert(!client->eta_in_flight);
flist_add_tail(&client->eta_list, &eta_list);
client->eta_in_flight = eta;
fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
(uintptr_t) eta, &client->cmd_list);
}
while (skipped--)
dec_jobs_eta(eta);
dprint(FD_NET, "client: requested eta tag %p\n", eta);
}
static int client_check_cmd_timeout(struct fio_client *client,
struct timeval *now)
{
struct fio_net_int_cmd *cmd;
struct flist_head *entry, *tmp;
int ret = 0;
flist_for_each_safe(entry, tmp, &client->cmd_list) {
cmd = flist_entry(entry, struct fio_net_int_cmd, list);
if (mtime_since(&cmd->tv, now) < FIO_NET_CLIENT_TIMEOUT)
continue;
log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
fio_server_op(cmd->cmd.opcode));
flist_del(&cmd->list);
free(cmd);
ret = 1;
}
return flist_empty(&client->cmd_list) && ret;
}
static int fio_client_timed_out(void)
{
struct fio_client *client;
struct flist_head *entry, *tmp;
struct timeval tv;
int ret = 0;
fio_gettime(&tv, NULL);
flist_for_each_safe(entry, tmp, &client_list) {
client = flist_entry(entry, struct fio_client, list);
if (flist_empty(&client->cmd_list))
continue;
if (!client_check_cmd_timeout(client, &tv))
continue;
log_err("fio: client %s timed out\n", client->hostname);
remove_client(client);
ret = 1;
}
return ret;
}
int fio_handle_clients(void)
{
struct pollfd *pfds;
int i, ret = 0, retval = 0;
fio_gettime(&eta_tv, NULL);
pfds = malloc(nr_clients * sizeof(struct pollfd));
init_thread_stat(&client_ts);
init_group_run_stat(&client_gs);
while (!exit_backend && nr_clients) {
struct flist_head *entry, *tmp;
struct fio_client *client;
i = 0;
flist_for_each_safe(entry, tmp, &client_list) {
client = flist_entry(entry, struct fio_client, list);
if (!client->sent_job &&
flist_empty(&client->cmd_list)) {
remove_client(client);
continue;
}
pfds[i].fd = client->fd;
pfds[i].events = POLLIN;
i++;
}
if (!nr_clients)
break;
assert(i == nr_clients);
do {
struct timeval tv;
fio_gettime(&tv, NULL);
if (mtime_since(&eta_tv, &tv) >= 900) {
request_client_etas();
memcpy(&eta_tv, &tv, sizeof(tv));
if (fio_client_timed_out())
break;
}
ret = poll(pfds, nr_clients, 100);
if (ret < 0) {
if (errno == EINTR)
continue;
log_err("fio: poll clients: %s\n", strerror(errno));
break;
} else if (!ret)
continue;
} while (ret <= 0);
for (i = 0; i < nr_clients; i++) {
if (!(pfds[i].revents & POLLIN))
continue;
client = find_client_by_fd(pfds[i].fd);
if (!client) {
log_err("fio: unknown client fd %d\n", pfds[i].fd);
continue;
}
if (!handle_client(client)) {
log_info("client: host=%s disconnected\n",
client->hostname);
remove_client(client);
retval = 1;
} else if (client->error)
retval = 1;
put_client(client);
}
}
free(pfds);
return retval;
}