From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Beller Subject: [PATCHv7 7/8] submodule update: expose parallelism to the user Date: Mon, 11 Jan 2016 11:42:00 -0800 Message-ID: <1452541321-27810-8-git-send-email-sbeller@google.com> References: <1452541321-27810-1-git-send-email-sbeller@google.com> Cc: jrnieder@gmail.com, Jens.Lehmann@web.de To: sbeller@google.com, git@vger.kernel.org, gitster@pobox.com X-From: git-owner@vger.kernel.org Mon Jan 11 20:42:35 2016 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 1aIiMM-00057R-RR for gcvg-git-2@plane.gmane.org; Mon, 11 Jan 2016 20:42:35 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964845AbcAKTmc (ORCPT ); Mon, 11 Jan 2016 14:42:32 -0500 Received: from mail-pf0-f177.google.com ([209.85.192.177]:35273 "EHLO mail-pf0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964836AbcAKTmX (ORCPT ); Mon, 11 Jan 2016 14:42:23 -0500 Received: by mail-pf0-f177.google.com with SMTP id 65so49349806pff.2 for ; Mon, 11 Jan 2016 11:42:22 -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=KMQVe6leVtvD21bSisvwswo2OYfUZ73A6fTtP1woQys=; b=hYUCBj1D+hbd5cQaD4/E8M4eNUJGRgVMwFZsjYaq/MIMbxr8sdct8Pf4jDsYR+jr8H XNYsGzAWSQJUgqSTTA4uwZNHAjkEgiI9ueIi+U0NRNjYYrRxwC+cJ5MVj5m01iUAx6gH RiFAY/gh5AEvc4aJcM2Sq3fAEE9H431f4W0yvVxTx1oGMait2QS6Noab1vTl7Ez4lNXX Iw6dFYCdkQKKJo/VTM4GdcdJUhNLvzgxl6mxaWE2Dv7Sb6ikKH1/8bNMZ2S3yiJR8MeX Iwnme4fsg2z290Z1Xdi6zLxRc0qsZhjBqQ1/MOjM1MrlyeHeY6b1A+VyIBiyVLlRXyOA B+3g== 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=KMQVe6leVtvD21bSisvwswo2OYfUZ73A6fTtP1woQys=; b=YQRmuB1x7od5foCWR21c0WGNQPTQoIrxSCapuO7W5xumZsv+wLaWuOdhXGRr67HS9X gPxnrsbW4XnvVleOt3/X+Gf0II9snut+4VRN6xFTL/YULGm4fUuW9JXxjHetfOjJ/bjt xix+U/oHKkUAn0uJxROdLjjZMSW1bqBKSCyzruXH+/YHEMiwvEWoJfTW1we+OdZFADwQ ev/3tP7TOBLV5U6T5deYI1zvPrXUKAQLuGBf0V34JvIO5qVQrZI/aECyalpueZvaXdVe xH6GNI+b3Jwxa7N35rh4JTBbp0k4Rd3nTb4AxeyxTvDlp/9imi/qTzZRcHnOvFUjBIkX bzDw== X-Gm-Message-State: ALoCoQnFcjhcwdrBKpTB1GeZe/uiY/6oyJmKfyOH/TiBtn96vFSpxGfCNVG+edIFyOSJW94qIJ7wvrAeVIyw7kW18G1CRYcJIQ== X-Received: by 10.98.68.193 with SMTP id m62mr28452374pfi.153.1452541342508; Mon, 11 Jan 2016 11:42:22 -0800 (PST) Received: from localhost ([2620:0:1000:5b00:8d8c:9316:e7e7:6f4f]) by smtp.gmail.com with ESMTPSA id y18sm25070493pfi.84.2016.01.11.11.42.21 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Mon, 11 Jan 2016 11:42:21 -0800 (PST) X-Mailer: git-send-email 2.7.0.rc1.7.gf4541cb.dirty In-Reply-To: <1452541321-27810-1-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 -- 2.7.0.rc1.7.gf4541cb.dirty