From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.bugs Subject: bug#61667: 29.0.60; Failure to redisplay Date: Wed, 22 Feb 2023 18:24:43 +0200 Message-ID: References: <04d7cb31-684c-07c0-ee7b-503514fc1a85@yandex.ru> <87a617eanz.fsf@yahoo.com> <4306cb76-a44c-3101-e43c-fd64afae4a51@yandex.ru> <871qmje2ws.fsf@yahoo.com> <83edqjtbss.fsf@gnu.org> <4e5e2a46-9b07-206a-6774-9f98f34cbd14@yandex.ru> <83y1orrolh.fsf@gnu.org> <83sfeyswdw.fsf@gnu.org> <877cwactgv.fsf@yahoo.com> <83mt55sxli.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="27531"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.2 Cc: 61667@debbugs.gnu.org To: Eli Zaretskii , Po Lu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Feb 22 17:25:28 2023 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 1pUrvr-000710-N8 for geb-bug-gnu-emacs@m.gmane-mx.org; 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Wed, 22 Feb 2023 08:24:45 -0800 (PST) Content-Language: en-US In-Reply-To: <83mt55sxli.fsf@gnu.org> 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:256372 Archived-At: On 22/02/2023 14:17, Eli Zaretskii wrote: >> #ifdef HAVE_XDBE >> + fprintf (stderr, "XTframe_up_to_date: %d, %d\n", >> + buffer_flipping_blocked_p (), >> + FRAME_X_NEED_BUFFER_FLIP (f)); >> + >> if (!buffer_flipping_blocked_p () >> && FRAME_X_NEED_BUFFER_FLIP (f)) >> show_back_buffer (f); >> @@ -17736,6 +17740,8 @@ x_flush_dirty_back_buffer_on (struct frame *f) >> || !FRAME_X_NEED_BUFFER_FLIP (f)) >> return; >> >> + fprintf (stderr, "x_flush_dirty_back_buffer_on: called\n"); > Careful with printfs, since we know this problem goes away when there > are too many of them. Use fputs whenever you can, since fprintf can > be much more expensive. Indeed, I haven't managed to reproduce the problem even once when the printing patch is applied. I've also tried this one, with the same lack of success: diff --git a/src/xterm.c b/src/xterm.c index e981a36fa9c..7829ad6b0e8 100644 --- a/src/xterm.c +++ b/src/xterm.c @@ -7394,6 +7394,18 @@ XTframe_up_to_date (struct frame *f) FRAME_MOUSE_UPDATE (f); #ifdef HAVE_XDBE + fputs ("XTframe_up_to_date: ", stderr); + if (buffer_flipping_blocked_p ()) + fputs ("1", stderr); + else + fputs ("0", stderr); + fputs (", ", stderr); + if (FRAME_X_NEED_BUFFER_FLIP (f)) + fputs ("1", stderr); + else + fputs ("0", stderr); + fputs ("\n", stderr); + if (!buffer_flipping_blocked_p () && FRAME_X_NEED_BUFFER_FLIP (f)) show_back_buffer (f); @@ -17509,6 +17521,8 @@ x_flush_dirty_back_buffer_on (struct frame *f) || !FRAME_X_NEED_BUFFER_FLIP (f)) return; + fputs ("x_flush_dirty_back_buffer_on: called\n", stderr); + show_back_buffer (f); #endif }