int
XCloseDisplay (
register Display *dpy)
{
register _XExtension *ext;
register int i;
if (!(dpy->flags & XlibDisplayClosing))
{
dpy->flags |= XlibDisplayClosing;
for (i = 0; i < dpy->nscreens; i++) {
register Screen *sp = &dpy->screens[i];
XFreeGC (dpy, sp->default_gc);
}
if (dpy->cursor_font != None) {
XUnloadFont (dpy, dpy->cursor_font);
}
XSync(dpy, 1); /* throw away pending events, catch errors */
/* call out to any extensions interested */
for (ext = dpy->ext_procs; ext; ext = ext->next) {
if (ext->close_display)
(*ext->close_display)(dpy, &ext->codes);
}
/* if the closes generated more protocol, sync them up */
if (dpy->request != dpy->last_request_read)
XSync(dpy, 1);
}
_XDisconnectDisplay(dpy->trans_conn);
_XFreeDisplayStructure (dpy);
return 0;
}
static Boolean
display_exists_p (int number)
{
char buf[64];
void *conn;
char *fullname = NULL;
int idisplay, iscreen;
char *conn_auth_name, *conn_auth_data;
int conn_auth_namelen, conn_auth_datalen;
#ifdef USE_XTRANS_INTERNALS
extern void *_X11TransConnectDisplay ();
extern void _XDisconnectDisplay ();
#endif
/* Since connecting to the display waits for a few seconds if the
display doesn't exist, check for trivial non-existence - if the
socket in /tmp exists or not.. (note: if the socket exists, the
server may still not, so we need to try to connect in that case..) */
sprintf (buf, "/tmp/.X11-unix/X%d", number);
if (access (buf, F_OK) != 0)
return FALSE;
#ifdef USE_XTRANS_INTERNALS
/* This is a private function that we shouldn't really be calling,
but it's the best way to see if the server exists (without
needing to hold the necessary authentication to use it) */
sprintf (buf, ":%d", number);
conn = _X11TransConnectDisplay (buf, &fullname, &idisplay, &iscreen,
&conn_auth_name, &conn_auth_namelen,
&conn_auth_data, &conn_auth_datalen);
if (conn == NULL)
return FALSE;
_XDisconnectDisplay (conn);
#endif
return TRUE;
}
