From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2042 invoked by alias); 18 Sep 2012 14:37:48 -0000 Received: (qmail 2005 invoked by uid 22791); 18 Sep 2012 14:37:44 -0000 X-SWARE-Spam-Status: No, hits=-3.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED X-Spam-Check-By: sourceware.org Received: from localhost (HELO sourceware.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 18 Sep 2012 14:37:27 +0000 From: "triegel at redhat dot com" To: glibc-bugs@sources.redhat.com Subject: [Bug nptl/14417] EAGAIN handling in pthread_cond_wait make pulseaudio hang Date: Tue, 18 Sep 2012 14:37:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: nptl X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: triegel at redhat dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: 2.17 X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: glibc-bugs-owner@sourceware.org X-SW-Source: 2012-09/txt/msg00155.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=14417 Torvald Riegel changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |triegel at redhat dot com --- Comment #7 from Torvald Riegel 2012-09-18 14:37:24 UTC --- (In reply to comment #6) > I would hesitate to try fixing this without also looking at and possibly fixing > bug #12875. The whole sequence number wakeup thing for condition variables is > fundamentally broken in NPTL and needs to be fixed. How so? You seem to see issues that go beyond bug #12875 (which I don't see as being a bug currently). If so, please link to them here. > Basically the issue is that > the current code is over-engineered to avoid spurious wakeups, but in the > process it suppresses some non-spurious wakeups... I'm not aware of any lost wake-ups for non-PI cond vars. If you have provided an alternative implementation proposal in the past, could you link to it when making such comments please? If you haven't but have a proposal now, please link to it here or post to glibc-alpha. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.