[{"id":31821,"web_url":"https://patchwork.libcamera.org/comment/31821/","msgid":"<172937791125.2485972.13668807662029274712@ping.linuxembedded.co.uk>","date":"2024-10-19T22:45:11","subject":"Re: [PATCH 2/4] libcamera: Use disconnect signal in ipa proxy worker","submitter":{"id":4,"url":"https://patchwork.libcamera.org/api/people/4/","name":"Kieran Bingham","email":"kieran.bingham@ideasonboard.com"},"content":"Quoting Harvey Yang (2024-10-18 08:57:35)\n> Previously the worker might not receive the disconnect signal, and the\n> forked process might stay alive forever.\n> \n> This CL also helps DMA buf recycling, as the algo process might hold DMA\n> buf file descriptors.\n\nShould this just be part of the previous patch? Or is it somehow\ndistinct?\n\n> \n> Signed-off-by: Harvey Yang \n> Co-developed-by: Yudhistira Erlandinata \n> Signed-off-by: Yudhistira Erlandinata \n> ---\n> .../libcamera_templates/module_ipa_proxy_worker.cpp.tmpl | 5 +++++\n> 1 file changed, 5 insertions(+)\n> \n> diff --git a/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl b/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> index 1f990d3f9..68d68c4a5 100644\n> --- a/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> +++ b/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> @@ -60,6 +60,10 @@ public:\n> \n> ~{{proxy_worker_name}}() {}\n> \n> + void disconnected() {\n> + exit_ = true;\n> + }\n> +\n> void readyRead()\n> {\n> IPCUnixSocket::Payload _message;\n> @@ -131,6 +135,7 @@ public:\n> return EXIT_FAILURE;\n> }\n> socket_.readyRead.connect(this, &{{proxy_worker_name}}::readyRead);\n> + socket_.disconnected.connect(this, &{{proxy_worker_name}}::disconnected);\n> \n> ipa_ = dynamic_cast<{{interface_name}} *>(ipam->createInterface());\n> if (!ipa_) {\n> -- \n> 2.47.0.rc1.288.g06298d1525-goog\n>","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 8AE12C3304\n\tfor ;\n\tSat, 19 Oct 2024 22:45:16 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 388746538E;\n\tSun, 20 Oct 2024 00:45:16 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 4267F65382\n\tfor ;\n\tSun, 20 Oct 2024 00:45:14 +0200 (CEST)","from pendragon.ideasonboard.com\n\t(cpc89244-aztw30-2-0-cust6594.18-1.cable.virginm.net [86.31.185.195])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 9521C502;\n\tSun, 20 Oct 2024 00:43:29 +0200 (CEST)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"kDq6aFaR\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1729377809;\n\tbh=wk9f/K70paMmg+XZtuT8H9zQT17frriT/Q9Uv4oIlic=;\n\th=In-Reply-To:References:Subject:From:Cc:To:Date:From;\n\tb=kDq6aFaRh/mCsmWuACoOTzdAz4YiHJQ13t7P/L94gmJ738IgwFblyC56dVBIG6y3R\n\tu0NrOW09arYjhRikZBtss5xYSV2kawgAhJKXQQWqKK0WRAHegQD8pnUtKLv7cR/Cd6\n\tJWLyk6+hQi8WFY82MN1dldnpolIxxtokuK7fZJTQ=","Content-Type":"text/plain; charset=\"utf-8\"","MIME-Version":"1.0","Content-Transfer-Encoding":"quoted-printable","In-Reply-To":"<20241018075942.1150378-3-chenghaoyang@chromium.org>","References":"<20241018075942.1150378-1-chenghaoyang@chromium.org>\n\t<20241018075942.1150378-3-chenghaoyang@chromium.org>","Subject":"Re: [PATCH 2/4] libcamera: Use disconnect signal in ipa proxy worker","From":"Kieran Bingham ","Cc":"Harvey Yang ,\n\tYudhistira Erlandinata ","To":"Harvey Yang ,\n\tlibcamera-devel@lists.libcamera.org","Date":"Sat, 19 Oct 2024 23:45:11 +0100","Message-ID":"<172937791125.2485972.13668807662029274712@ping.linuxembedded.co.uk>","User-Agent":"alot/0.10","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}},{"id":31824,"web_url":"https://patchwork.libcamera.org/comment/31824/","msgid":"","date":"2024-10-20T04:35:57","subject":"Re: [PATCH 2/4] libcamera: Use disconnect signal in ipa proxy worker","submitter":{"id":117,"url":"https://patchwork.libcamera.org/api/people/117/","name":"Cheng-Hao Yang","email":"chenghaoyang@chromium.org"},"content":"Hi Kieran,\n\nOn Sun, Oct 20, 2024 at 6:45 AM Kieran Bingham\n wrote:\n>\n> Quoting Harvey Yang (2024-10-18 08:57:35)\n> > Previously the worker might not receive the disconnect signal, and the\n> > forked process might stay alive forever.\n> >\n> > This CL also helps DMA buf recycling, as the algo process might hold DMA\n> > buf file descriptors.\n>\n> Should this just be part of the previous patch? Or is it somehow\n> distinct?\n\nYes, I'm also fine with merging them. Will do in the next version.\n\nBR,\nHarvey\n\n>\n> >\n> > Signed-off-by: Harvey Yang \n> > Co-developed-by: Yudhistira Erlandinata \n> > Signed-off-by: Yudhistira Erlandinata \n> > ---\n> > .../libcamera_templates/module_ipa_proxy_worker.cpp.tmpl | 5 +++++\n> > 1 file changed, 5 insertions(+)\n> >\n> > diff --git a/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl b/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > index 1f990d3f9..68d68c4a5 100644\n> > --- a/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > +++ b/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > @@ -60,6 +60,10 @@ public:\n> >\n> > ~{{proxy_worker_name}}() {}\n> >\n> > + void disconnected() {\n> > + exit_ = true;\n> > + }\n> > +\n> > void readyRead()\n> > {\n> > IPCUnixSocket::Payload _message;\n> > @@ -131,6 +135,7 @@ public:\n> > return EXIT_FAILURE;\n> > }\n> > socket_.readyRead.connect(this, &{{proxy_worker_name}}::readyRead);\n> > + socket_.disconnected.connect(this, &{{proxy_worker_name}}::disconnected);\n> >\n> > ipa_ = dynamic_cast<{{interface_name}} *>(ipam->createInterface());\n> > if (!ipa_) {\n> > --\n> > 2.47.0.rc1.288.g06298d1525-goog\n> >","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 85B1AC3304\n\tfor ;\n\tSun, 20 Oct 2024 04:36:11 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 2F9F96538C;\n\tSun, 20 Oct 2024 06:36:11 +0200 (CEST)","from mail-lj1-x232.google.com (mail-lj1-x232.google.com\n\t[IPv6:2a00:1450:4864:20::232])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 3F63B603ED\n\tfor ;\n\tSun, 20 Oct 2024 06:36:09 +0200 (CEST)","by mail-lj1-x232.google.com with SMTP id\n\t38308e7fff4ca-2fb470a8b27so38826941fa.1\n\tfor ;\n\tSat, 19 Oct 2024 21:36:09 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}},{"id":31835,"web_url":"https://patchwork.libcamera.org/comment/31835/","msgid":"<20241020164854.GH7770@pendragon.ideasonboard.com>","date":"2024-10-20T16:48:54","subject":"Re: [PATCH 2/4] libcamera: Use disconnect signal in ipa proxy worker","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"content":"On Sun, Oct 20, 2024 at 12:35:57PM +0800, Cheng-Hao Yang wrote:\n> On Sun, Oct 20, 2024 at 6:45 AM Kieran Bingham wrote:\n> > Quoting Harvey Yang (2024-10-18 08:57:35)\n> > > Previously the worker might not receive the disconnect signal, and the\n> > > forked process might stay alive forever.\n> > >\n> > > This CL also helps DMA buf recycling, as the algo process might hold DMA\n> > > buf file descriptors.\n> >\n> > Should this just be part of the previous patch? Or is it somehow\n> > distinct?\n> \n> Yes, I'm also fine with merging them. Will do in the next version.\n\nPlease detail in the commit message both the expected behaviour on the\nlibcamera side and on the proxy worker side.\n\n> > > Signed-off-by: Harvey Yang \n> > > Co-developed-by: Yudhistira Erlandinata \n> > > Signed-off-by: Yudhistira Erlandinata \n> > > ---\n> > > .../libcamera_templates/module_ipa_proxy_worker.cpp.tmpl | 5 +++++\n> > > 1 file changed, 5 insertions(+)\n> > >\n> > > diff --git a/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl b/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > > index 1f990d3f9..68d68c4a5 100644\n> > > --- a/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > > +++ b/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > > @@ -60,6 +60,10 @@ public:\n> > >\n> > > ~{{proxy_worker_name}}() {}\n> > >\n> > > + void disconnected() {\n> > > + exit_ = true;\n> > > + }\n\n\tvoid disconnected()\n\t{\n\t\texit_ = true;\n\t}\n\n> > > +\n> > > void readyRead()\n> > > {\n> > > IPCUnixSocket::Payload _message;\n> > > @@ -131,6 +135,7 @@ public:\n> > > return EXIT_FAILURE;\n> > > }\n> > > socket_.readyRead.connect(this, &{{proxy_worker_name}}::readyRead);\n> > > + socket_.disconnected.connect(this, &{{proxy_worker_name}}::disconnected);\n> > >\n> > > ipa_ = dynamic_cast<{{interface_name}} *>(ipam->createInterface());\n> > > if (!ipa_) {","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 6563EC3306\n\tfor ;\n\tSun, 20 Oct 2024 16:49:03 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 293146538F;\n\tSun, 20 Oct 2024 18:49:02 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id A340A65379\n\tfor ;\n\tSun, 20 Oct 2024 18:49:00 +0200 (CEST)","from pendragon.ideasonboard.com (81-175-209-231.bb.dnainternet.fi\n\t[81.175.209.231])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 106B078E;\n\tSun, 20 Oct 2024 18:47:14 +0200 (CEST)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"Gs2HkVo8\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1729442835;\n\tbh=IDfEzPBvVVNVSbuA0UCg76XR703RUeGb8EKUiOQOTTw=;\n\th=Date:From:To:Cc:Subject:References:In-Reply-To:From;\n\tb=Gs2HkVo8RI/oti80OTHKuNhksZ6kcaPMVoxVjukFrEvLbN5BEy5GvwBqT6u4VMbZs\n\tWn0DE7lIKTIA5k/VYbJraCvwp1ISxKqqLgiP3HEIuy0GN5cqmCJkR/fZBHmuN9u511\n\tlsLZAVEBmUIQhjrS11C5H/xnys2L2o8EyOkfv7UI=","Date":"Sun, 20 Oct 2024 19:48:54 +0300","From":"Laurent Pinchart ","To":"Cheng-Hao Yang ","Cc":"Kieran Bingham ,\n\tlibcamera-devel@lists.libcamera.org,\n\tYudhistira Erlandinata ","Subject":"Re: [PATCH 2/4] libcamera: Use disconnect signal in ipa proxy worker","Message-ID":"<20241020164854.GH7770@pendragon.ideasonboard.com>","References":"<20241018075942.1150378-1-chenghaoyang@chromium.org>\n\t<20241018075942.1150378-3-chenghaoyang@chromium.org>\n\t<172937791125.2485972.13668807662029274712@ping.linuxembedded.co.uk>\n\t","MIME-Version":"1.0","Content-Type":"text/plain; charset=utf-8","Content-Disposition":"inline","Content-Transfer-Encoding":"8bit","In-Reply-To":"","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}},{"id":31885,"web_url":"https://patchwork.libcamera.org/comment/31885/","msgid":"","date":"2024-10-23T06:51:35","subject":"Re: [PATCH 2/4] libcamera: Use disconnect signal in ipa proxy worker","submitter":{"id":117,"url":"https://patchwork.libcamera.org/api/people/117/","name":"Cheng-Hao Yang","email":"chenghaoyang@chromium.org"},"content":"Hi Laurent,\n\nOn Mon, Oct 21, 2024 at 12:49 AM Laurent Pinchart\n wrote:\n>\n> On Sun, Oct 20, 2024 at 12:35:57PM +0800, Cheng-Hao Yang wrote:\n> > On Sun, Oct 20, 2024 at 6:45 AM Kieran Bingham wrote:\n> > > Quoting Harvey Yang (2024-10-18 08:57:35)\n> > > > Previously the worker might not receive the disconnect signal, and the\n> > > > forked process might stay alive forever.\n> > > >\n> > > > This CL also helps DMA buf recycling, as the algo process might hold DMA\n> > > > buf file descriptors.\n> > >\n> > > Should this just be part of the previous patch? Or is it somehow\n> > > distinct?\n> >\n> > Yes, I'm also fine with merging them. Will do in the next version.\n>\n> Please detail in the commit message both the expected behaviour on the\n> libcamera side and on the proxy worker side.\n\nUpdated.\n\n>\n> > > > Signed-off-by: Harvey Yang \n> > > > Co-developed-by: Yudhistira Erlandinata \n> > > > Signed-off-by: Yudhistira Erlandinata \n> > > > ---\n> > > > .../libcamera_templates/module_ipa_proxy_worker.cpp.tmpl | 5 +++++\n> > > > 1 file changed, 5 insertions(+)\n> > > >\n> > > > diff --git a/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl b/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > > > index 1f990d3f9..68d68c4a5 100644\n> > > > --- a/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > > > +++ b/utils/codegen/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl\n> > > > @@ -60,6 +60,10 @@ public:\n> > > >\n> > > > ~{{proxy_worker_name}}() {}\n> > > >\n> > > > + void disconnected() {\n> > > > + exit_ = true;\n> > > > + }\n>\n> void disconnected()\n> {\n> exit_ = true;\n> }\n>\n\nThanks, will be updated in the next version.\n\nBR,\nHarvey\n\n> > > > +\n> > > > void readyRead()\n> > > > {\n> > > > IPCUnixSocket::Payload _message;\n> > > > @@ -131,6 +135,7 @@ public:\n> > > > return EXIT_FAILURE;\n> > > > }\n> > > > socket_.readyRead.connect(this, &{{proxy_worker_name}}::readyRead);\n> > > > + socket_.disconnected.connect(this, &{{proxy_worker_name}}::disconnected);\n> > > >\n> > > > ipa_ = dynamic_cast<{{interface_name}} *>(ipam->createInterface());\n> > > > if (!ipa_) {\n>\n> --\n> Regards,\n>\n> Laurent Pinchart","headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 5DF19BD16B\n\tfor ;\n\tWed, 23 Oct 2024 06:51:50 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 4227265391;\n\tWed, 23 Oct 2024 08:51:49 +0200 (CEST)","from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com\n\t[IPv6:2a00:1450:4864:20::22e])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 72E3E618C1\n\tfor ;\n\tWed, 23 Oct 2024 08:51:47 +0200 (CEST)","by mail-lj1-x22e.google.com with SMTP id\n\t38308e7fff4ca-2fb5be4381dso65376461fa.2\n\tfor ;\n\tTue, 22 Oct 2024 23:51:47 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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