From a0f1e75cdb8bfe7a8076cb3b5ffa4f2adcd6a093 Mon Sep 17 00:00:00 2001 From: Adrien Bustany Date: Thu, 19 Jul 2012 21:43:19 +0300 Subject: [PATCH] [PATCH 0/2] Add flush/reopen methods to notmuch_database_t --- 1b/a75ea234bfec3516fdacf2e6551ffa96e472ba | 66 +++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 1b/a75ea234bfec3516fdacf2e6551ffa96e472ba diff --git a/1b/a75ea234bfec3516fdacf2e6551ffa96e472ba b/1b/a75ea234bfec3516fdacf2e6551ffa96e472ba new file mode 100644 index 000000000..72588324a --- /dev/null +++ b/1b/a75ea234bfec3516fdacf2e6551ffa96e472ba @@ -0,0 +1,66 @@ +Return-Path: +X-Original-To: notmuch@notmuchmail.org +Delivered-To: notmuch@notmuchmail.org +Received: from localhost (localhost [127.0.0.1]) + by olra.theworths.org (Postfix) with ESMTP id 8703B431FDA + for ; Thu, 19 Jul 2012 11:43:30 -0700 (PDT) +X-Virus-Scanned: Debian amavisd-new at olra.theworths.org +X-Spam-Flag: NO +X-Spam-Score: 0 +X-Spam-Level: +X-Spam-Status: No, score=0 tagged_above=-999 required=5 tests=[none] + autolearn=disabled +Received: from olra.theworths.org ([127.0.0.1]) + by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024) + with ESMTP id mpDBYcKwWOHV for ; + Thu, 19 Jul 2012 11:43:26 -0700 (PDT) +Received: from mail.bustany.org (bustany.org [176.31.244.208]) + by olra.theworths.org (Postfix) with ESMTP id B2E79431FAE + for ; Thu, 19 Jul 2012 11:43:26 -0700 (PDT) +Received: from localhost.localdomain (91-158-2-79.elisa-laajakaista.fi + [91.158.2.79]) + by mail.bustany.org (Postfix) with ESMTPSA id 964C7140090 + for ; Thu, 19 Jul 2012 20:45:55 +0200 (CEST) +From: Adrien Bustany +To: notmuch@notmuchmail.org +Subject: [PATCH 0/2] Add flush/reopen methods to notmuch_database_t +Date: Thu, 19 Jul 2012 21:43:19 +0300 +Message-Id: <1342723401-26103-1-git-send-email-adrien@bustany.org> +X-Mailer: git-send-email 1.7.7.6 +X-BeenThere: notmuch@notmuchmail.org +X-Mailman-Version: 2.1.13 +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: Thu, 19 Jul 2012 18:43:30 -0000 + +Xapian (and therefore Notmuch? I would not mind a confirmation here) is +thread safe as long as you don't share DB instances across threads. The +database backend supports one writer and several concurrent readers. +One possible model for multi threaded apps using Notmuch is to have one +thread with a writable notmuch_database_t, and various with read-only +notmuch_database_t instances. However, for the readers to see the +changes done by the writer, the writer needs to flush the changes to +disk, and the readers need to reopen the database. +Those two patches add two methods to notmuch_database_t for this +purpose (the signaling of the writer to the readers that they need to +reopen is left to the application). + +Adrien Bustany (2): + Add notmuch_database_flush method + Add notmuch_database_reopen method + + lib/database.cc | 35 +++++++++++++++++++++++++++++++++++ + lib/notmuch.h | 12 ++++++++++++ + 2 files changed, 47 insertions(+), 0 deletions(-) + +-- +1.7.7.6 + -- 2.26.2