From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Robert Pluim Newsgroups: gmane.emacs.bugs Subject: bug#40023: 26.3; Emacs crashes when creating process if many file handles are in use (e.g., when using ccls) Date: Thu, 19 Mar 2020 11:41:37 +0100 Message-ID: References: <865E1017-DFA9-495D-BCDA-70B46FE09A27@pirk.name> <83fteeamtd.fsf@gnu.org> <83d09hsj4k.fsf@gnu.org> <83a74lshc9.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="121761"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 40023@debbugs.gnu.org, holger@pirk.name To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Mar 19 11:42:15 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jEscw-000VYl-QL for geb-bug-gnu-emacs@m.gmane-mx.org; 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Thu, 19 Mar 2020 03:41:39 -0700 (PDT) Original-Received: from rpluim-mac ([2a01:e34:ecfc:a860:a5e4:a54d:af0e:151]) by smtp.gmail.com with ESMTPSA id a192sm2550976wme.5.2020.03.19.03.41.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Mar 2020 03:41:39 -0700 (PDT) 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: 209.51.188.43 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:177539 Archived-At: >>>>> On Thu, 12 Mar 2020 17:46:58 +0100, Robert Pluim s= aid: >>> If someone has an 'emacs -Q' testcase I can look at it. Soon we will >>> all be spending lots of time at home here :-( Eli> We could simply install the proposed workaround on the emacs-27 br= anch Eli> for now, I think. So I installed lsp-mode and ccls, added lsp to c-mode-hook, visited emacs/src/font.c and then said yes when it asked me if I wanted to watch all the files (there are ~6500). I then recompiled emacs using M-x compile, and saw no crash. This is with emacs-master. I checked with emacs-26 and saw no crash. I did look in *lsp-log*, and saw a bunch of messages saying: Failed to create a watch for File watching not possible, no file descriptor= left: 975: message (this is with 'ulimit -n 4096') so I think this is very much dependent on which language server you=CA=BCre using. Note also that it=CA=BCs watching directories, not files, I had to create a bunch of extra directories to get that message. I have: ccls --version ccls version 8.0.0 (tags/RELEASE_800/final) Robert