1 files changed, 96 insertions, 0 deletions
diff --git a/src/Synchro.c b/src/Synchro.c
new file mode 100644
index 00000000..9e9d50ad
--- /dev/null
+++ b/src/Synchro.c
@@ -0,0 +1,96 @@
+/* $Xorg: Synchro.c,v 1.4 2001/02/09 02:03:37 xorgcvs Exp $ */
+/*
+
+Copyright 1986, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+
+#include "Xlibint.h"
+
+
+int _XSyncFunction(dpy)
+register Display *dpy;
+{
+	XSync(dpy,0);
+	return 0;
+}
+
+#if NeedFunctionPrototypes
+int (*XSynchronize(Display *dpy, int onoff))()
+#else
+int (*XSynchronize(dpy,onoff))()
+     register Display *dpy;
+     int onoff;
+#endif
+{
+        int (*temp)();
+	int (*func)() = NULL;
+
+	if (onoff)
+	    func = _XSyncFunction;
+
+	LockDisplay(dpy);
+	if (dpy->flags & XlibDisplayPrivSync) {
+	    temp = dpy->savedsynchandler;
+	    dpy->savedsynchandler = func;
+	} else {
+	    temp = dpy->synchandler;
+	    dpy->synchandler = func;
+	}
+	UnlockDisplay(dpy);
+	return (temp);
+}
+
+#if NeedFunctionPrototypes
+int (*XSetAfterFunction(
+     Display *dpy,
+     int (*func)(
+#if NeedNestedPrototypes
+		 Display*
+#endif
+		 )
+))()
+#else
+int (*XSetAfterFunction(dpy,func))()
+     register Display *dpy;
+     int (*func)(
+#if NeedNestedPrototypes
+		 Display*
+#endif
+		 );
+#endif
+{
+        int (*temp)();
+
+	LockDisplay(dpy);
+	if (dpy->flags & XlibDisplayPrivSync) {
+	    temp = dpy->savedsynchandler;
+	    dpy->savedsynchandler = func;
+	} else {
+	    temp = dpy->synchandler;
+	    dpy->synchandler = func;
+	}
+	UnlockDisplay(dpy);
+	return (temp);
+}
+