From: Eric J Date: Tue, 1 Mar 2016 18:34:40 +0000 (+0100) Subject: Re: Tcl bindings for notmuch X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=dfc1faef29896ecfc6193108334bc0032dbb805b;p=notmuch-archives.git Re: Tcl bindings for notmuch --- diff --git a/18/fa223e3a1e945d9bf64655cc8ef2503fe4403e b/18/fa223e3a1e945d9bf64655cc8ef2503fe4403e new file mode 100644 index 000000000..3700872e8 --- /dev/null +++ b/18/fa223e3a1e945d9bf64655cc8ef2503fe4403e @@ -0,0 +1,138 @@ +Return-Path: +X-Original-To: notmuch@notmuchmail.org +Delivered-To: notmuch@notmuchmail.org +Received: from localhost (localhost [127.0.0.1]) + by arlo.cworth.org (Postfix) with ESMTP id 7F1846DE103A + for ; Tue, 1 Mar 2016 10:35:38 -0800 (PST) +X-Virus-Scanned: Debian amavisd-new at cworth.org +X-Spam-Flag: NO +X-Spam-Score: 0.092 +X-Spam-Level: +X-Spam-Status: No, score=0.092 tagged_above=-999 required=5 tests=[AWL=0.002, + DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, + RCVD_IN_MSPIKE_H3=-0.01, + RCVD_IN_MSPIKE_WL=-0.01, T_DKIM_INVALID=0.01] autolearn=disabled +Received: from arlo.cworth.org ([127.0.0.1]) + by localhost (arlo.cworth.org [127.0.0.1]) (amavisd-new, port 10024) + with ESMTP id lcNpAVgW1xPx for ; + Tue, 1 Mar 2016 10:35:35 -0800 (PST) +Received: from mx1.solardns.com (mx1.solardns.com [109.73.127.119]) + by arlo.cworth.org (Postfix) with ESMTPS id 52F656DE00DF + for ; Tue, 1 Mar 2016 10:35:34 -0800 (PST) +Received: from [213.129.84.218] (helo=luna.solardns.com) + by mx1.solardns.com with esmtps (TLSv1.2:DHE-RSA-AES256-SHA:256) + (Exim 4.85) (envelope-from ) id 1aap8k-0007pL-W9 + for notmuch@notmuchmail.org; Tue, 01 Mar 2016 18:35:30 +0000 +DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deptj.eu; + s=default; h=Date:Message-ID:References:In-Reply-To:To:Subject:From; + bh=cX/TxD4F1eJXciRcUZem+xKwjBFSallgNy2EO8+pES4=; b=Ax6UCrWm/r6nlYcrXtvd/xJWUK + nr02lLQORD0o2sRLK2sLewblP2lBCAI9h6I30AvYo2sC0HCRx3TPM6mbPwamWMW6khar9lKvxkH3D + zf02bnJjxCPc+AlUiEClUsTX9F5711Zmlz6t67oiK/BvwwhNE0mLrmM5PyKpbFDIg39Y=; +Received: from [2.12.196.83] (port=51853 helo=bruno.deptj.eu) + by luna.solardns.com with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) + (Exim 4.86) (envelope-from ) id 1aap8k-000X9f-Ea + for notmuch@notmuchmail.org; Tue, 01 Mar 2016 18:35:22 +0000 +Received: from eric by bruno.deptj.eu with local (Exim 4.84) + (envelope-from ) id 1aap8j-000315-Np + for notmuch@notmuchmail.org; Tue, 01 Mar 2016 19:35:21 +0100 +From: Eric J +Subject: Re: Tcl bindings for notmuch +To: notmuch@notmuchmail.org +In-Reply-To: <0379758d60f150aa79777a12361b036358b8d949-NM@bruno.deptj.eu> +References: <0379758d60f150aa79777a12361b036358b8d949-NM@bruno.deptj.eu> +Message-ID: <49bd0126ca982aba70990f1e1526aaac384b620e-NM@bruno.deptj.eu> +Date: Tue, 01 Mar 2016 19:34:40 +0100 (CET) +X-AuthUser: deptjeu +X-Filter-ID: + s0sct1PQhAABKnZB5plbIZxxbsbMXbbOVqDrOlLQDPCKLoLP9dSDpksiPa3sfcfQiw3bi2TEXpBy + KOgMDJLxZ2gLr13hkJnqYlE8dI2PqoFC/lGsrXcsS0xY0J18f6o7xB66CWvXcfKDfXjTU++u62Tf + 3IaijxFCsl1Acjok/mtg3GKfo28I/znarUMoy/Q1ZuM7jUXIESohoO51xWmU8U0XxLGz4gGrl7np + YUMMsx7Zx6js8RMGZ+eyCM03IideZE/8G6RrW+hPYRmHOym9VEp4OmAp9SwcFw57ijAOXur1H/aA + warQpYDOYx/6JtUOKIpz/KyJk6xidDbrtJGeIvwS+mRNB2u5eXMTyiRDCl4blv/7/GYDGL6pBAPx + 3RhxuHrpSpJU4PQlqFj9797wgsGhIeDBws4kvu4hgViYIJSOH7FelTFEA57OugCjQqJvq5XDlSi1 + S/CAqp6x6giLUpAadaOpLL7vzAlHz9Vt0lJbH3q7FSJEAvmcpRDg+DcXMCx8qKfWo/2nfeswSb/v + XOidX4Ts4xdG+C13IyWeZaJClvAWyUAUCSYHhmge3quet8geXjZWRvaT/RbJ/nX/IFFm7SbdEzck + 901Ob2Iq9tC/Vh1lis0iI/S1HLwoHXf0 +X-Report-Abuse-To: spam@mx1.solardns.com +X-Filter-Fingerprint: + IFrWXGses7OKB5S5G8/dJdIz5bb8V0ykx8BnFBnunHBA3cTUQ1R++keuE7RDJ8Kg3RbMLUalw1oC + mj99/u+Poh38tEMU4IgC4sNz49qn3HHnhRv/ZJ3kEy8bfiAr+Fb/UpndEJ0YoaLytXXo8BMTaVt0 + ARHRi6XGuAluI1udprGClI6bm+u9ssQgM5AHe3Zacv4uJct5wtJvPpZ2dlBHCwDSxr3Vz+LJ/RhM + 2JZ0ECN5dnq47RWft7iCyM9+PbHelB4qP9S6mTzNwoPraFy6ieiDqMHb2a0eZvGOvr7RaxKWGCKO + us9nABr0Pk/4CplP +X-Originating-IP: 213.129.84.218 +X-SpamExperts-Domain: out.solardns.com +X-SpamExperts-Username: 213.129.84.218 +Authentication-Results: solardns.com; + auth=pass smtp.auth=213.129.84.218@out.solardns.com +X-SpamExperts-Outgoing-Class: unsure +X-SpamExperts-Outgoing-Evidence: Combined (0.53) +X-Recommended-Action: accept +X-BeenThere: notmuch@notmuchmail.org +X-Mailman-Version: 2.1.20 +Precedence: list +List-Id: "Use and development of the notmuch mail system." + +List-Unsubscribe: , + +List-Archive: +List-Post: +List-Help: +List-Subscribe: , + +X-List-Received-Date: Tue, 01 Mar 2016 18:35:38 -0000 + +On Sun, 14 Feb 2016 13:05:28 +0100 (CET), Eric J wrote: +> + +Resending with additional information: + +> I have been using notmuch for a while and I wanted to be able to use +> notmuch queries in some Tcl stuff I have been using for a rather longer +> while. I could have just called the notmuch CLI every time, but I thought +> "no, it's a library, there should be bindings". +> +> Bindings made me think of SWIG, which seems to have been tried for +> notmuch in the past but abandoned. However, with some time available... +> +> ... I can now, from Tcl, use the API functions from the library to +> create a database, close and open it, add messages, tag them, run queries +> and retrieve information about the results. I haven't tested every API +> function yet, but I will be able to go on with my own needs at least. It +> is only functions with pointer-to-pointer arguments that need special +> attention, and that is all in the SWIG interface file. You can see that at +> http://chiselapp.com/user/emj/repository/tclnotmuch/artifact/527aee944d?txt=1&ln=0 +> - its about 50 lines (plus some blanks). +> +> That's a Fossil repository, with a home page at +> http://chiselapp.com/user/emj/repository/tclnotmuch , if anyone wants +> to look further. I think it may benefit from more wrapping from the Tcl +> side, just for usability. +> +> BTW, I have no idea if or how the interface file would have to be changed +> for other languages. + +The bindings work, but for a use case where simultaneous database access +from different processes is needed (e.g. processing emails as they +arrive), lost updates are possible for the following Tcl versions: + +* 8.5.18 built with threads (not the default) +* 8.6.[1-4] built with threads (default) + +However, the following Tcl versions do not have this problem: + +* 8.5.18 built without threads (default) +* 8.5.19 built with or without threads +* 8.6.[1-4] built without threads (not the default) +* 8.6.5 built with or without threads + +Earlier 8.5.x are presumably the same as 8.5.18. + +The problems, where they exist, are due to a weird interaction between +Tcl's thread implementation and Xapian's locking mechanism. The Tcl fix +in 8.5.19/8.6.5 was made for reasons unrelated to Xapian locking, but +fixes it anyway. + +Eric +-- +ms fnd in a lbry