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79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* $Xorg: Synchro.c,v 1.4 2001/02/09 02:03:37 xorgcvs Exp $ */
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/*
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Copyright 1986, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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/* $XFree86: xc/lib/X11/Synchro.c,v 1.4 2003/11/17 22:20:08 dawes Exp $ */
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#include "Xlibint.h"
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static int _XSyncFunction(register Display *dpy)
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{
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XSync(dpy,0);
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return 0;
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}
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int (*XSynchronize(Display *dpy, int onoff))(Display *)
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{
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int (*temp)(Display *);
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int (*func)(Display *) = NULL;
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if (onoff)
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func = _XSyncFunction;
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LockDisplay(dpy);
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if (dpy->flags & XlibDisplayPrivSync) {
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temp = dpy->savedsynchandler;
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dpy->savedsynchandler = func;
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} else {
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temp = dpy->synchandler;
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dpy->synchandler = func;
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}
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UnlockDisplay(dpy);
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return (temp);
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}
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int (*XSetAfterFunction(
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Display *dpy,
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int (*func)(
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Display*
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)
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))(Display *)
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{
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int (*temp)(Display *);
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LockDisplay(dpy);
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if (dpy->flags & XlibDisplayPrivSync) {
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temp = dpy->savedsynchandler;
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dpy->savedsynchandler = func;
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} else {
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temp = dpy->synchandler;
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dpy->synchandler = func;
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}
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UnlockDisplay(dpy);
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return (temp);
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}
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