hammer.c

/*
 * The MIT License (MIT)
 *
 * Original work Copyright (c) 2015 Frank Quinn (http://fquinner.github.io)
 * Modified work Copyright (c) 2020 Bill Torpey (http://btorpey.github.io)
 * and assigned to NYFIX, a division of Itiviti Group AB
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include <stdio.h>
#include <zmq.h>
#include <sys/time.h>
#include <stdint.h>
#include <unistd.h>

int main()
{
   char buffer [223];
   buffer[0] = 'A';
   buffer[1] = '\0';
   uint64_t* seq = (uint64_t*)(buffer + 2);
   uint32_t* s = (uint32_t*)(seq + 1);
   uint32_t* us = (uint32_t*)(s + 1);
   int i = 0;
   int j = 0;
   int hwm = 0;
   void* zmqSocketPublisher  = zmq_socket(zmq_ctx_new(), ZMQ_PUB);
   zmq_setsockopt(zmqSocketPublisher, ZMQ_SNDHWM, &hwm, sizeof(int));
   struct timeval tv;
   zmq_bind(zmqSocketPublisher, "tcp://*:5556");
   *seq = 0;
   while (1) {
      (*seq)++;
      gettimeofday(&tv, NULL);
      *s = (uint32_t)tv.tv_sec;
      *us = (uint32_t)tv.tv_usec;

      int i = zmq_send(zmqSocketPublisher, buffer, sizeof(buffer), 0);
      int e = errno;
      if (i == -1) {
         printf("ERROR FOUND: %d\n", e);
      }
      //for (j = 0; j < 1000000; j++);
   }
}