/* eventWait.c
 *
 * Call the eventWait system call implemented in the waitQ module.
 * Pass in the event id, which will be 1, 2, or 3. If I use any
 * other event Id, then the event won't be found.
 *
 * If the event is found, this task will sleep on the event until a
 * task issuing a signal on this event is invoked.
 *
 * Use the existing unused system calls.
 * eventWait       is sched_setaffinity 241
 * eventSig        is sched_getaffinity 242
 *
 */

/* Standard include files for syscall, see man syscall */
#include <sys/syscall.h>
#include <asm/unistd.h>
#include <stdio.h>               /* for printf */
#include <stdlib.h>              /* for atoi */

int main(int argc, char **argv)
{ int i,n,eventId;

  if (argc != 2)
  { printf("Usage: ./eventWait eventIdint\n");
    return -1;
  }

  printf("eventWait - calling my_syscall 241\n");

  for (i = 1; i < argc; i++)
  { eventId = atoi(argv[i]);
    if (!eventId)
    { printf("Invalid event Id: %d\n",eventId);
      return -1;
    }
    printf("eventWait %d\n", eventId);
    n = syscall(__NR_sched_setaffinity, eventId);
  }

  printf("eventWait - returned: %d\n",n);
  printf("eventWait - Done.\n");
  return 0;

}