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/*
Copyright (c) 2007-2010 iMatix Corporation
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the Lesser GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Lesser GNU General Public License for more details.
You should have received a copy of the Lesser GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "../include/zmq.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "helpers.h"
int main (int argc, char *argv [])
{
const char *connect_to;
int roundtrip_count;
size_t message_size;
void *ctx;
void *s;
int rc;
int i;
zmq_msg_t msg;
void *watch;
unsigned long elapsed;
double latency;
if (argc != 4) {
printf ("usage: remote_lat <connect-to> <message-size> "
"<roundtrip-count>\n");
return 1;
}
connect_to = argv [1];
message_size = atoi (argv [2]);
roundtrip_count = atoi (argv [3]);
ctx = zmq_init (1);
if (!ctx) {
printf ("error in zmq_init: %s\n", zmq_strerror (errno));
return -1;
}
s = zmq_socket (ctx, ZMQ_REQ);
if (!s) {
printf ("error in zmq_socket: %s\n", zmq_strerror (errno));
return -1;
}
rc = zmq_connect (s, connect_to);
if (rc != 0) {
printf ("error in zmq_connect: %s\n", zmq_strerror (errno));
return -1;
}
rc = zmq_msg_init_size (&msg, message_size);
if (rc != 0) {
printf ("error in zmq_msg_init_size: %s\n", zmq_strerror (errno));
return -1;
}
memset (zmq_msg_data (&msg), 0, message_size);
watch = stopwatch_start ();
for (i = 0; i != roundtrip_count; i++) {
rc = zmq_send (s, &msg, 0);
if (rc != 0) {
printf ("error in zmq_send: %s\n", zmq_strerror (errno));
return -1;
}
rc = zmq_recv (s, &msg, 0);
if (rc != 0) {
printf ("error in zmq_recv: %s\n", zmq_strerror (errno));
return -1;
}
if (zmq_msg_size (&msg) != message_size) {
printf ("message of incorrect size received\n");
return -1;
}
}
elapsed = stopwatch_stop (watch);
rc = zmq_msg_close (&msg);
if (rc != 0) {
printf ("error in zmq_msg_close: %s\n", zmq_strerror (errno));
return -1;
}
latency = (double) elapsed / (roundtrip_count * 2);
printf ("message size: %d [B]\n", (int) message_size);
printf ("roundtrip count: %d\n", (int) roundtrip_count);
printf ("average latency: %.3f [us]\n", (double) latency);
rc = zmq_close (s);
if (rc != 0) {
printf ("error in zmq_close: %s\n", zmq_strerror (errno));
return -1;
}
rc = zmq_term (ctx);
if (rc != 0) {
printf ("error in zmq_term: %s\n", zmq_strerror (errno));
return -1;
}
return 0;
}
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