display-mansync(7) GGI display-mansync(7)NAMEdisplay-mansync : sync mode emulation
SYNOPISdisplay-mansyncDESCRIPTION
Helper library for the implementation of SYNC mode on targets which are
inherently ASYNC (e.g. X) and require manual flushes of the frame‐
buffer.
A target wishing to use mansync should open mansync with _ggiAddDL() in
it's own GGIopen(). It must pass a pointer to a _ggi_opmansync struc‐
ture as the argument to _ggiAddDL(), and must define the following
macros:
MANSYNC_init(vis)MANSYNC_deinit(vis)MANSYNC_start(vis)MANSYNC_stop(vis)MANSYNC_ignore(vis)MANSYNC_cont(vis)
which is supposed to call the functions in _ggi_opmansync respectively.
Mansync provides the following functions:
int _GGI_mansync_init(vis);
int _GGI_mansync_deinit(vis);
Initialize/deinitialize mansync for given visual.
int _GGI_mansync_start(vis);
int _GGI_mansync_stop(vis);
Start/stop mansync handling. (process,thread,etc.)
You don't need to explicitly call these;
MANSYNC_SETFLAGS does it for you.
int _GGI_mansync_ignore(vis);
int _GGI_mansync_cont(vis);
Temporarily start/stop mansync, e.g. during mode set.
It is o.k. to use them even if mansync has not been started.
MANSYNC_SETFLAGS(vis,flags)
mansync management in ggiSetFlags().
(The above functions return 0 if successful, -1 if not.)
Please see display/X, display/aa or display/tile to see how mansync is
used. The functions should be transparent enough.
Important: You're responsible for locking your own visual, not
mansync!
ENVIRONMENT VARIABLES
GGI_MANSYNC_FPS
This variable specifies the framerate for targets emulating syn‐
chronous mode. The default is 20fps. If you are experiencing
problems with the X target over relatively slow remote connec‐
tions it might be due to connection overload. You might want to
try with a lower GGI_MANSYNC_FPS setting.
libggi-2.2.x 2004-06-05 display-mansync(7)
