From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#22287: 25.1.50; Sudden jumping point in buffer Date: Mon, 04 Jan 2016 17:22:10 +0200 Message-ID: <83fuyd8j4t.fsf@gnu.org> References: <20160101111008.GA14391@scotty.home> <87y4c6nbte.fsf@engster.org> <20160103130742.GA11570@scotty.home> <87twmumzqm.fsf@engster.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1451921008 26374 80.91.229.3 (4 Jan 2016 15:23:28 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 4 Jan 2016 15:23:28 +0000 (UTC) Cc: stefan.hahn@s-hahn.de, 22287@debbugs.gnu.org To: David Engster Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Jan 04 16:23:18 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aG6yU-0006Sg-8G for geb-bug-gnu-emacs@m.gmane.org; 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Mon, 04 Jan 2016 10:22:06 -0500 In-reply-to: <87twmumzqm.fsf@engster.org> (message from David Engster on Sun, 03 Jan 2016 16:47:29 +0100) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:111190 Archived-At: > From: David Engster > Date: Sun, 03 Jan 2016 16:47:29 +0100 > Cc: 22287@debbugs.gnu.org > > > | *** handle atimers [540 times] > > | *** sem start: buffer intervals.c 49722 > > | *** sem: buffer intervals.c 49722 > > | *** input: rc=nil 49722 49722 > > | *** out: rc=nil 49722 49722 > > | *** sem: buffer intervals.c 49722 > > | *** input: rc=nil 49722 49722 > > | *** out: rc=nil 49722 49722 > > | *** sem: buffer intervals.c 49722 > > | *** input: rc=nil 49722 49722 > > | *** out: rc=nil 49722 49722 > > | *** sem: buffer intervals.c 49722 > > | *** input: rc=nil 49722 49722 > > | *** out: rc=nil 49722 49722 > > | *** sem: buffer intervals.c 49722 > > | *** input: rc=nil 49722 49722 > > | *** out: rc=nil 49722 49722 > > | *** sem: buffer intervals.c 49722 > > | *** input: rc=nil 49722 49722 > > | *** out: rc=nil 49722 49722 > > | *** handle atimers [10 times] > > That's interesting. Why do timers run here at all? These are _atimers_, not timers. An entirely different beast. See atimer.c. Grep the C sources for start_atimer and turn_on_atimers, to see which code uses atimers. One such place is the poll timer used to poll for user input (see keyboard.c), another is the hour-glass mouse pointer feature shown when Emacs is busy (see xdisp.c). We also turn them off while waiting for input in wait_reading_process_output (see process.c).