From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#28544: 26.0.50; emacs will consume 100% cpu after gdb debugee exits Date: Sun, 16 Aug 2020 18:46:48 +0200 Message-ID: <87364mv8qv.fsf@gnus.org> References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="25386"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 28544@debbugs.gnu.org, "Charles A. Roelli" To: Sung Ho Kim Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Aug 16 18:47:23 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 1k7LoY-0006W1-No for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 16 Aug 2020 18:47:22 +0200 Original-Received: from localhost ([::1]:37922 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k7LoX-00029u-QH for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 16 Aug 2020 12:47:21 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39432) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k7LoE-00029g-TA for bug-gnu-emacs@gnu.org; Sun, 16 Aug 2020 12:47:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:46758) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k7LoE-00049i-BD for bug-gnu-emacs@gnu.org; Sun, 16 Aug 2020 12:47:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k7LoE-00072M-7d for bug-gnu-emacs@gnu.org; Sun, 16 Aug 2020 12:47:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 16 Aug 2020 16:47:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28544 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed Original-Received: via spool by 28544-submit@debbugs.gnu.org id=B28544.159759642127014 (code B ref 28544); Sun, 16 Aug 2020 16:47:02 +0000 Original-Received: (at 28544) by debbugs.gnu.org; 16 Aug 2020 16:47:01 +0000 Original-Received: from localhost ([127.0.0.1]:58304 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k7LoC-00071N-VJ for submit@debbugs.gnu.org; Sun, 16 Aug 2020 12:47:01 -0400 Original-Received: from quimby.gnus.org ([95.216.78.240]:39226) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k7LoA-0006vw-U3 for 28544@debbugs.gnu.org; Sun, 16 Aug 2020 12:46:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=KlTAtW5SUNWuvfdpLDiOwrHUolRLRtLQTbHPqUhDOh0=; b=O1z/B41wt8YQClf/693+g+9Hp9 VmCWM2fpJ56WqCLgijxkEOQwthlVWzk+LPVLXH5Zw6fDcyMQaF97lNCNDmrLBLVA1C3hj9iKSP0ty uAPHhxDcD4IMLz3S+VsVk1+VmhKSgHp6blIkLT+RtoDBpYqrwSxGGAYRITvF+yiWOrdU=; Original-Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k7Lo1-0003k8-Na; Sun, 16 Aug 2020 18:46:52 +0200 X-Now-Playing: Kate Bush's _This Woman's Work I_: "My Lagan Love" In-Reply-To: (Sung Ho Kim's message of "Wed, 20 Sep 2017 12:03:37 +0900") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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:185308 Archived-At: Sung Ho Kim writes: > after rebuilding with the aforementioned change, the 100% cpu usage > disappears. I have refrained from offering a patch because I am not > fully knowledgeable with the code and its possible side effects. Well, that's unfortunate, because without a patch it's difficult to interpret just what it is you're proposing. If I piece together the code correctly, you're saying the following patch fixes the problem on Macos? diff --git a/src/process.c b/src/process.c index 15634e4a8b..740891983e 100644 --- a/src/process.c +++ b/src/process.c @@ -5821,7 +5821,9 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, EIO, just continue, because the child process has exited and should clean itself up soon (e.g. when we get a SIGCHLD). */ - else if (nread == -1 && errno == EIO) + else if (nread == 0 && !NETCONN_P (proc) && !SERIALCONN_P (proc) + && !PIPECONN_P (proc)) +#ifdef DARWIN_OS { struct Lisp_Process *p = XPROCESS (proc); @@ -5838,6 +5840,9 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd, pset_status (p, Qfailed); } } +#else + ; +#endif #endif /* HAVE_PTYS */ /* If we can detect process termination, don't consider the process gone just because its pipe is closed. */ -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no