close(readfd);
static double rc_compfunc(struct CompAdaptor *ca, struct DataBlock *src){	struct RealCompInstance *ci = (struct RealCompInstance *) ca->cptr;  char dummy;  int readfd;  ci->bytecount = 0;  readfd = forkPipeExecAndFeed(src, ci->cmd);  while (read(readfd, &dummy, 1) == 1) {    ci->bytecount += 1;  }//  printf("Got bytecount %f\n", (float) ci->bytecount);  return ci->bytecount * 8.0;}