static void fghSleepForEvents( void )
{
fg_time_t msec;
if( fghHavePendingWork( ) )
return;
msec = fghNextTimer( );
/* XXX Should use GLUT timers for joysticks... */
/* XXX Dumb; forces granularity to .01sec */
if( fgState.NumActiveJoysticks>0 && ( msec > 10 ) )
msec = 10;
fgPlatformSleepForEvents ( msec );
}
/*
* Does the magic required to relinquish the CPU until something interesting
* happens.
*/
static void fghSleepForEvents( void )
{
long msec;
if( fgState.IdleCallback || fghHavePendingRedisplays( ) )
return;
msec = fghNextTimer( );
/* XXX Use GLUT timers for joysticks... */
/* XXX Dumb; forces granularity to .01sec */
if( fghHaveJoystick( ) && ( msec > 10 ) )
msec = 10;
#if TARGET_HOST_UNIX_X11
/*
* Possibly due to aggressive use of XFlush() and friends,
* it is possible to have our socket drained but still have
* unprocessed events. (Or, this may just be normal with
* X, anyway?) We do non-trivial processing of X events
* after the event-reading loop, in any case, so we
* need to allow that we may have an empty socket but non-
* empty event queue.
*/
if( ! XPending( fgDisplay.Display ) )
{
fd_set fdset;
int err;
int socket;
struct timeval wait;
socket = ConnectionNumber( fgDisplay.Display );
FD_ZERO( &fdset );
FD_SET( socket, &fdset );
wait.tv_sec = msec / 1000;
wait.tv_usec = (msec % 1000) * 1000;
err = select( socket+1, &fdset, NULL, NULL, &wait );
//if( ( -1 == err ) && ( errno != EINTR ) )
// fgWarning ( "freeglut select() error: %d", errno );
}
#elif TARGET_HOST_WIN32 || TARGET_HOST_WINCE
MsgWaitForMultipleObjects( 0, NULL, FALSE, msec, QS_ALLEVENTS );
#endif
}
