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120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/*
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Copyright (c) 2007-2010 iMatix Corporation
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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 <string.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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zmq_msg_t msg;
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void *watch;
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unsigned long elapsed;
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double latency;
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if (argc != 4) {
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printf ("usage: remote_lat <connect-to> <message-size> "
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"<roundtrip-count>\n");
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return 1;
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}
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connect_to = argv [1];
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message_size = atoi (argv [2]);
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roundtrip_count = atoi (argv [3]);
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ctx = zmq_init (1, 1, 0);
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if (!ctx) {
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printf ("error in zmq_init: %s\n", zmq_strerror (errno));
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return -1;
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}
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s = zmq_socket (ctx, ZMQ_REQ);
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if (!s) {
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printf ("error in zmq_socket: %s\n", zmq_strerror (errno));
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return -1;
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}
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rc = zmq_connect (s, connect_to);
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if (rc != 0) {
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printf ("error in zmq_connect: %s\n", zmq_strerror (errno));
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return -1;
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}
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rc = zmq_msg_init_size (&msg, message_size);
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if (rc != 0) {
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printf ("error in zmq_msg_init_size: %s\n", zmq_strerror (errno));
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return -1;
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}
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memset (zmq_msg_data (&msg), 0, message_size);
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watch = zmq_stopwatch_start ();
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for (i = 0; i != roundtrip_count; i++) {
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rc = zmq_send (s, &msg, 0);
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if (rc != 0) {
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printf ("error in zmq_send: %s\n", zmq_strerror (errno));
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return -1;
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}
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rc = zmq_recv (s, &msg, 0);
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if (rc != 0) {
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printf ("error in zmq_recv: %s\n", zmq_strerror (errno));
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return -1;
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}
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if (zmq_msg_size (&msg) != message_size) {
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printf ("message of incorrect size received\n");
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return -1;
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}
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}
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elapsed = zmq_stopwatch_stop (watch);
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rc = zmq_msg_close (&msg);
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if (rc != 0) {
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printf ("error in zmq_msg_close: %s\n", zmq_strerror (errno));
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return -1;
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}
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latency = (double) 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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rc = zmq_close (s);
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if (rc != 0) {
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printf ("error in zmq_close: %s\n", zmq_strerror (errno));
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return -1;
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}
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rc = zmq_term (ctx);
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if (rc != 0) {
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printf ("error in zmq_term: %s\n", zmq_strerror (errno));
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return -1;
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}
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return 0;
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}
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