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90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/*
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Copyright (c) 2007-2009 FastMQ Inc.
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the Lesser GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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Lesser GNU General Public License for more details.
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You should have received a copy of the Lesser GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <zmq.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <sys/time.h>
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int main (int argc, char *argv [])
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{
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const char *connect_to;
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int roundtrip_count;
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int message_size;
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void *ctx;
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void *s;
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int rc;
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int i;
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struct zmq_msg_t msg;
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struct timeval start;
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struct timeval end;
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double elapsed;
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double latency;
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if (argc != 4) {
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printf ("usage: remote_lat <connect-to> <roundtrip-count> "
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"<message-size>\n");
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return 1;
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}
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connect_to = argv [1];
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roundtrip_count = atoi (argv [2]);
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message_size = atoi (argv [3]);
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ctx = zmq_init (1, 1);
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assert (ctx);
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s = zmq_socket (ctx, ZMQ_REQ);
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assert (s);
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rc = zmq_connect (s, connect_to);
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assert (rc == 0);
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rc = gettimeofday (&start, NULL);
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assert (rc == 0);
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for (i = 0; i != roundtrip_count; i++) {
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rc = zmq_msg_init_size (&msg, message_size);
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assert (rc == 0);
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rc = zmq_send (s, &msg, 0);
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assert (rc == 0);
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rc = zmq_recv (s, &msg, 0);
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assert (rc == 0);
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assert (zmq_msg_size (&msg) == message_size);
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rc = zmq_msg_close (&msg);
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assert (rc == 0);
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}
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rc = gettimeofday (&end, NULL);
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assert (rc == 0);
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end.tv_sec -= start.tv_sec;
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start.tv_sec = 0;
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elapsed = (end.tv_sec * 1000000 + end.tv_usec) -
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(start.tv_sec * 1000000 + start.tv_usec);
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latency = elapsed / (roundtrip_count * 2);
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printf ("message size: %d [B]\n", (int) message_size);
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printf ("roundtrip count: %d\n", (int) roundtrip_count);
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printf ("average latency: %3f [us]\n", (double) latency);
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return 0;
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}
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