#include "copyright.h"

/* $XConsortium: XSynchro.c,v 11.6 88/09/06 16:11:04 jim Exp $ */
/* Copyright    Massachusetts Institute of Technology    1986	 */

#include "Xlibint.h"


int
_XSyncFunction (dpy)
  register Display *dpy;
{
  XSync (dpy, 0);
}

int (*
     XSynchronize (dpy, onoff)) ()
  register Display *dpy;
  int onoff;
{
  int (*temp) ();

  LockDisplay (dpy);
  temp = dpy->synchandler;
  if (onoff)
    dpy->synchandler = _XSyncFunction;
  else
    dpy->synchandler = NULL;
  UnlockDisplay (dpy);
  return (temp);
}

int (*
     XSetAfterFunction (dpy, func)) ()
  register Display *dpy;
  int (*func) ();
{
  int (*temp) ();

  LockDisplay (dpy);
  temp = dpy->synchandler;
  dpy->synchandler = func;
  UnlockDisplay (dpy);
  return (temp);
}