From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Beller Subject: [PATCH 7/8] submodule update: expose parallelism to the user Date: Mon, 14 Dec 2015 14:54:24 -0800 Message-ID: <1450133665-3783-8-git-send-email-sbeller@google.com> References: <1450133665-3783-1-git-send-email-sbeller@google.com> Cc: peff@peff.net, jrnieder@gmail.com, johannes.schindelin@gmail.com, Jens.Lehmann@web.de, ericsunshine@gmail.com, j6t@kdbg.org To: sbeller@google.com, git@vger.kernel.org, gitster@pobox.com X-From: git-owner@vger.kernel.org Mon Dec 14 23:55:53 2015 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1a8c21-0001bd-GR for gcvg-git-2@plane.gmane.org; Mon, 14 Dec 2015 23:55:49 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932649AbbLNWzl (ORCPT ); Mon, 14 Dec 2015 17:55:41 -0500 Received: from mail-pa0-f54.google.com ([209.85.220.54]:36226 "EHLO mail-pa0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932567AbbLNWzG (ORCPT ); Mon, 14 Dec 2015 17:55:06 -0500 Received: by pacdm15 with SMTP id dm15so110985034pac.3 for ; Mon, 14 Dec 2015 14:55:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=MQkVb+15lo6j6VBqMLthfHFOnMdSJuRJvZd3+srh8z8=; b=Mur+8ojk84RnR/vBCAN5WegsQv24Z/Tzn6DH/iLRZWxvxR8y7XxP/shkk6ztbFayr6 jRjWxdHnxiA/YcyENuvq0iCSGzLN4P0iGHowkKBDLjHW5OW/R1QQIc7YMCYq+cGzazus 8Ld4V7OagqBdqSVvpMznzYZNXIxuTA5Fx/SMTdTv91wdc3m3xk5Qwk+IYwxfiogQePa1 4KPCQ/NAHnWLUHdc4zc0/GQrOJ+DiThRuR/SGkdkvXjnsukUaD+mEw8aLhSTwNq9H09/ +/4mNMier4/zWFjv90CVFB+iwSPzAZHlAk6wbD6b7duChuQcFkM44gC1EBsYCOvARWcl pS5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=MQkVb+15lo6j6VBqMLthfHFOnMdSJuRJvZd3+srh8z8=; b=jtxGcrsQ9D46fpB6iNdp9aQIuOueI82M075dkkjrhm52rcFfKcnsPIHzFyX+osOQ5i KZ/DlPuU/5qhwAIF9nSHhGbx8Vj2nQYnDcVnMe2Ryx8Xv7TIviwxMrZ+2FMcT0ffMwmn 2OnpAmPzuy1QWnUWcrNQFROE9ADncNJ3AdS1ZTTeLG4ZakdnijeqXgXqGfGNZ4zi9quU 2NTfZgZGeiVuxzBDy75jh4BCIhgyaFKc2B/wsH9DiYmdS33eDKRTxLwaeZMBKeLzjtxj 4DVlpZwntUEIAh6tqW0HGWjQ/2uiI19EYdEovGi9neKKuQbue38p+Sr+uSxqvm58CAUv ppcQ== X-Gm-Message-State: ALoCoQkqihRDYXjANP1J2ggv/T2jBtyYWOZ+/+9AGqTtmBCuCNiM4jMoQBompqk4pINBSZQgP40cclqwJpAKvydyp/nUoZlPBg== X-Received: by 10.66.180.48 with SMTP id dl16mr48979132pac.39.1450133706046; Mon, 14 Dec 2015 14:55:06 -0800 (PST) Received: from localhost ([2620:0:1000:5b00:e502:49aa:9791:cefa]) by smtp.gmail.com with ESMTPSA id rz10sm45041103pac.29.2015.12.14.14.55.05 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Mon, 14 Dec 2015 14:55:05 -0800 (PST) X-Mailer: git-send-email 2.6.4.443.ge094245.dirty In-Reply-To: <1450133665-3783-1-git-send-email-sbeller@google.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Expose possible parallelism either via the "--jobs" CLI parameter or the "submodule.fetchJobs" setting. By having the variable initialized to -1, we make sure 0 can be passed into the parallel processing machine, which will then pick as many parallel workers as there are CPUs. Signed-off-by: Stefan Beller --- Documentation/git-submodule.txt | 7 ++++++- builtin/submodule--helper.c | 18 ++++++++++++++---- git-submodule.sh | 9 +++++++++ t/t7406-submodule-update.sh | 12 ++++++++++++ 4 files changed, 41 insertions(+), 5 deletions(-) diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt index 1572f05..13adebf 100644 --- a/Documentation/git-submodule.txt +++ b/Documentation/git-submodule.txt @@ -16,7 +16,7 @@ SYNOPSIS 'git submodule' [--quiet] deinit [-f|--force] [--] ... 'git submodule' [--quiet] update [--init] [--remote] [-N|--no-fetch] [-f|--force] [--rebase|--merge] [--reference ] - [--depth ] [--recursive] [--] [...] + [--depth ] [--recursive] [--jobs ] [--] [...] 'git submodule' [--quiet] summary [--cached|--files] [(-n|--summary-limit) ] [commit] [--] [...] 'git submodule' [--quiet] foreach [--recursive] @@ -377,6 +377,11 @@ for linkgit:git-clone[1]'s `--reference` and `--shared` options carefully. clone with a history truncated to the specified number of revisions. See linkgit:git-clone[1] +-j :: +--jobs :: + This option is only valid for the update command. + Clone new submodules in parallel with as many jobs. + Defaults to the `submodule.fetchJobs` option. ...:: Paths to submodule(s). When specified this will restrict the command diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c index 9441f20..8002187 100644 --- a/builtin/submodule--helper.c +++ b/builtin/submodule--helper.c @@ -426,6 +426,7 @@ static int update_clone_task_finished(int result, static int update_clone(int argc, const char **argv, const char *prefix) { + int max_jobs = -1; struct string_list_item *item; struct submodule_update_clone pp = SUBMODULE_UPDATE_CLONE_INIT; @@ -446,6 +447,8 @@ static int update_clone(int argc, const char **argv, const char *prefix) OPT_STRING(0, "depth", &pp.depth, "", N_("Create a shallow clone truncated to the " "specified number of revisions")), + OPT_INTEGER('j', "jobs", &max_jobs, + N_("parallel jobs")), OPT__QUIET(&pp.quiet, N_("do't print cloning progress")), OPT_END() }; @@ -467,10 +470,17 @@ static int update_clone(int argc, const char **argv, const char *prefix) gitmodules_config(); /* Overlay the parsed .gitmodules file with .git/config */ git_config(git_submodule_config, NULL); - run_processes_parallel(1, update_clone_get_next_task, - update_clone_start_failure, - update_clone_task_finished, - &pp); + + if (max_jobs < 0) + max_jobs = config_parallel_submodules(); + if (max_jobs < 0) + max_jobs = 1; + + run_processes_parallel(max_jobs, + update_clone_get_next_task, + update_clone_start_failure, + update_clone_task_finished, + &pp); if (pp.print_unmatched) { printf("#unmatched\n"); diff --git a/git-submodule.sh b/git-submodule.sh index 9f554fb..10c5af9 100755 --- a/git-submodule.sh +++ b/git-submodule.sh @@ -645,6 +645,14 @@ cmd_update() --depth=*) depth=$1 ;; + -j|--jobs) + case "$2" in '') usage ;; esac + jobs="--jobs=$2" + shift + ;; + --jobs=*) + jobs=$1 + ;; --) shift break @@ -670,6 +678,7 @@ cmd_update() ${update:+--update "$update"} \ ${reference:+--reference "$reference"} \ ${depth:+--depth "$depth"} \ + ${jobs:+$jobs} \ "$@" | { err= while read mode sha1 stage just_cloned sm_path diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh index dda3929..7fd5142 100755 --- a/t/t7406-submodule-update.sh +++ b/t/t7406-submodule-update.sh @@ -774,4 +774,16 @@ test_expect_success 'submodule update --recursive drops module name before recur test_i18ngrep "Submodule path .deeper/submodule/subsubmodule.: checked out" actual ) ' + +test_expect_success 'submodule update can be run in parallel' ' + (cd super2 && + GIT_TRACE=$(pwd)/trace.out git submodule update --jobs 7 && + grep "7 tasks" trace.out && + git config submodule.fetchJobs 8 && + GIT_TRACE=$(pwd)/trace.out git submodule update && + grep "8 tasks" trace.out && + GIT_TRACE=$(pwd)/trace.out git submodule update --jobs 9 && + grep "9 tasks" trace.out + ) +' test_done -- 2.6.4.443.ge094245.dirty