void gn_vm_loop(void)
{
fd_set rfds;
struct timeval tv;
int res;
int nfd, devfd;
int i, n;
char buf[256], *d;
devfd = device_getfd(sm);
nfd = (PtyRDFD > devfd) ? PtyRDFD + 1 : devfd + 1;
while (!GTerminateThread) {
if (CommandMode && gn_atem_initialised && queue.n > 0) {
d = queue.buf + queue.head;
queue.head = (queue.head + 1) % sizeof(queue.buf);
queue.n--;
gn_atem_incoming_data_handle(d, 1);
continue;
}
FD_ZERO(&rfds);
FD_SET(devfd, &rfds);
if ( queue.n < sizeof(queue.buf) ) {
FD_SET(PtyRDFD, &rfds);
}
tv.tv_sec = 0;
tv.tv_usec = 500000;
res = select(nfd, &rfds, NULL, NULL, &tv);
switch (res) {
case 0: /* Timeout */
continue;
case -1:
perror("gn_vm_loop - select");
exit (-1);
default:
break;
}
if (FD_ISSET(PtyRDFD, &rfds)) {
n = sizeof(queue.buf) - queue.n < sizeof(buf) ?
sizeof(queue.buf) - queue.n :
sizeof(buf);
if ( (n = read(PtyRDFD, buf, n)) <= 0 ) gn_vm_terminate();
for (i = 0; i < n; i++) {
queue.buf[queue.tail++] = buf[i];
queue.tail %= sizeof(queue.buf);
queue.n++;
}
}
if (FD_ISSET(devfd, &rfds)) gn_sm_loop(1, sm);
}
}
/* cleanup function registered by atexit() and called at exit() */
static void busterminate(void)
{
gn_vm_terminate();
gn_device_unlock(lockfile);
gn_lib_library_free();
}
