Bug 11751

Summary:	XRecordEnableContextAsync does not work with XCB
Product:	xorg	Reporter:	Brice Goglin <brice.goglin>
Component:	Lib/Xlib	Assignee:	Jamey Sharp <jamey>
Status:	RESOLVED FIXED	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium	CC:	xcb
Version:	7.2 (2007.02)
Hardware:	Other
OS:	All
URL:	http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=425969
Whiteboard:
i915 platform:		i915 features:

Description Brice Goglin 2007-07-28 03:10:04 UTC

Bug reported by Cedric Borgese on the Debian BTS 2 months ago. Here's a summary what has been said in this bug.

XRecordEnableContextAsync works well with libx11 1.1 built without XCB, but it does not with XCB. XRecordEnableContext works with both.

If you replace XRecordEnableContextAsync with XRecordEnableContext and remove
XRecordProcessReplies, it works, but the record is synchronous now and cannot be integrated in an interactive gui app.

It's not clear what XRecordEnableContextAsync and XRecordProcessReplies don't do correctly.

There's a example code available at
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=main.c;att=2;bug=425969

Build it with gcc main.c -lX11 -lXtst, run it and move the mouse. if it work, it should catch the mouse motion.

I am assigning to "library" by default aince I don't know XCB well enough to choose the right component.

Brice

Comment 1 Jamey Sharp 2007-11-04 12:20:12 UTC

On recent review, we've found that the implementation of process_responses in Xlib's src/xcb_io.c is incorrect. This bug is probably related, though we haven't done enough troubleshooting to confirm that yet.

Comment 2 Julien Cristau 2009-01-21 17:11:50 UTC

Adding QA contact.

Comment 3 Jamey Sharp 2009-10-09 10:37:13 UTC

As far as I can tell, this test app works now. I wouldn't be shocked if socket-handoff fixed it.

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