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/*
Copyright (c) 2007-2009 FastMQ Inc.
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 <zmq.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <sys/time.h>
int main (int argc, char *argv [])
{
const char *connect_to;
int roundtrip_count;
int message_size;
void *ctx;
void *s;
int rc;
int i;
struct zmq_msg_t msg;
struct timeval start;
struct timeval end;
double elapsed;
double latency;
if (argc != 4) {
printf ("usage: remote_lat <connect-to> <roundtrip-count> "
"<message-size>\n");
return 1;
}
connect_to = argv [1];
roundtrip_count = atoi (argv [2]);
message_size = atoi (argv [3]);
ctx = zmq_init (1, 1);
assert (ctx);
s = zmq_socket (ctx, ZMQ_REQ);
assert (s);
rc = zmq_connect (s, connect_to);
assert (rc == 0);
rc = gettimeofday (&start, NULL);
assert (rc == 0);
for (i = 0; i != roundtrip_count; i++) {
rc = zmq_msg_init_size (&msg, message_size);
assert (rc == 0);
rc = zmq_send (s, &msg, 0);
assert (rc == 0);
rc = zmq_recv (s, &msg, 0);
assert (rc == 0);
assert (zmq_msg_size (&msg) == message_size);
rc = zmq_msg_close (&msg);
assert (rc == 0);
}
rc = gettimeofday (&end, NULL);
assert (rc == 0);
end.tv_sec -= start.tv_sec;
start.tv_sec = 0;
elapsed = (end.tv_sec * 1000000 + end.tv_usec) -
(start.tv_sec * 1000000 + start.tv_usec);
latency = 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);
return 0;
}
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