Parallel task sink in C

// Task sink
// Binds PULL socket to tcp://localhost:5558
// Collects results from workers via that socket

#include "zhelpers.h"

int main (void)
{
// Prepare our context and socket
void *context = zmq_ctx_new ();
void *receiver = zmq_socket (context, ZMQ_PULL);
zmq_bind (receiver, "tcp://*:5558");

// Wait for start of batch
char *string = s_recv (receiver);
free (string);

// Start our clock now
int64_t start_time = s_clock ();

// Process 100 confirmations
int task_nbr;
for (task_nbr = 0; task_nbr < 100; task_nbr++) {
char *string = s_recv (receiver);
free (string);
if ((task_nbr / 10) * 10 == task_nbr)
printf (":");
else
printf (".");
fflush (stdout);
}
// Calculate and report duration of batch
printf ("Total elapsed time: %d msec\n",
(int) (s_clock () - start_time));

zmq_close (receiver);
zmq_ctx_destroy (context);
return 0;
}