From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Beller Subject: [PATCHv4 07/14] fetch_populated_submodules: use new parallel job processing Date: Tue, 22 Sep 2015 18:45:25 -0700 Message-ID: <1442972732-12118-8-git-send-email-sbeller@google.com> References: <1442972732-12118-1-git-send-email-sbeller@google.com> Cc: ramsay@ramsayjones.plus.com, jacob.keller@gmail.com, peff@peff.net, gitster@pobox.com, jrnieder@gmail.com, johannes.schindelin@gmail.com, Jens.Lehmann@web.de, vlovich@gmail.com, sunshine@sunshineco.com, Stefan Beller To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Wed Sep 23 03:46:08 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 1ZeZ8J-0007Dx-KW for gcvg-git-2@plane.gmane.org; Wed, 23 Sep 2015 03:46:08 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760002AbbIWBpy (ORCPT ); Tue, 22 Sep 2015 21:45:54 -0400 Received: from mail-pa0-f54.google.com ([209.85.220.54]:32799 "EHLO mail-pa0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752217AbbIWBpp (ORCPT ); Tue, 22 Sep 2015 21:45:45 -0400 Received: by pacex6 with SMTP id ex6so25232908pac.0 for ; Tue, 22 Sep 2015 18:45:45 -0700 (PDT) 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=PEJIF7SqKj6mjxfodivKe3jfV883xII4abEqNvJfKLE=; b=OSNTZWlZ17jzdXViHgTjbXRkVgGCm0x02PEEZipNDfLTY5mDqAhbX7HP297LTs+ETA xs9qgF6K/sBdQDkZ/XEJliRYLgaitNavEam31pWfEnxCTcq06SRfUyEJVCV0q3yYk9dk OfpF06dqi+wMHvc/mLRBHbIx68tMVWdPXhVewxA4533F9t898CMBARQ9D7uLHtPhze2s 40jmyDBBs6khPBt65nJwQJJxC39fWpI4D0bX1eA5zhaxA+/iANx7D94jl0cYWwk7GmGe CfEp5d7EjRhJogPQFOPCWK0Rk8Dk9jDNIrd9XiK78Log4JqJ+0y/d4WBMfkJMQLoKO0P e38w== 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=PEJIF7SqKj6mjxfodivKe3jfV883xII4abEqNvJfKLE=; b=W6enNy9wNg5J2fi/lwcZvQGH51aYCCne2zXfxnNfcDrZKa4riv4KRyPOFJLC7GPq/4 y+qDA7kYgv1HYeqQHX+OcQSha91AmsjblmRtUfW8nrrhWj/kVjdpW9b74SxXSTHsaaUK JTybiVIceq/nJPm/VSMSXiWzdwHfUcpy82PcF62/wZWxIcshSnwuvgGcP9EIb/3HlZFg 0R6lpGh+mQ8CPOGBI71Vjiwu56vJH4GXDw+VU7xCjJa2SfQb44i7MCT8xBC6XfIuGVY3 LH+sZvoTY9diqXJHek3hr4TQ+3DQAe6S+2sPRpO++hCOTuedbEqVYIr7e55yQvQFJMIG PYmA== X-Gm-Message-State: ALoCoQk359bkdVHd00gflVm7n7di4weG2OyliMw6m2QYWP0SGRwrsZrgH/f3mVKvbWqqBO/oQED/ X-Received: by 10.66.139.231 with SMTP id rb7mr34317806pab.5.1442972745128; Tue, 22 Sep 2015 18:45:45 -0700 (PDT) Received: from localhost ([2620:0:1000:5b00:c149:8175:4df1:ed3a]) by smtp.gmail.com with ESMTPSA id c16sm4599022pbu.37.2015.09.22.18.45.44 (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Tue, 22 Sep 2015 18:45:44 -0700 (PDT) X-Mailer: git-send-email 2.5.0.272.ga84127c.dirty In-Reply-To: <1442972732-12118-1-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: In a later patch we enable parallel processing of submodules, this only adds the possibility for it. So this change should not change any user facing behavior. Signed-off-by: Stefan Beller --- submodule.c | 119 +++++++++++++++++++++++++++++++++++++++++++----------------- 1 file changed, 85 insertions(+), 34 deletions(-) diff --git a/submodule.c b/submodule.c index 1d64e57..d7c7a6e 100644 --- a/submodule.c +++ b/submodule.c @@ -12,6 +12,7 @@ #include "sha1-array.h" #include "argv-array.h" #include "blob.h" +#include "thread-utils.h" static int config_fetch_recurse_submodules = RECURSE_SUBMODULES_ON_DEMAND; static struct string_list changed_submodule_paths; @@ -615,37 +616,82 @@ static void calculate_changed_submodule_paths(void) initialized_fetch_ref_tips = 0; } +struct submodule_parallel_fetch { + int count; + struct argv_array args; + const char *work_tree; + const char *prefix; + int command_line_option; + int quiet; + int result; +}; +#define SPF_INIT {0, ARGV_ARRAY_INIT, NULL, NULL, 0, 0, 0} + +int get_next_submodule(void *data, struct child_process *cp, + struct strbuf *err); + +void handle_submodule_fetch_start_err(void *data, struct child_process *cp, struct strbuf *err) +{ + struct submodule_parallel_fetch *spf = data; + spf->result = 1; +} + +void handle_submodule_fetch_finish( void *data, struct child_process *cp, int retvalue) +{ + struct submodule_parallel_fetch *spf = data; + + if (retvalue) + spf->result = 1; +} + int fetch_populated_submodules(const struct argv_array *options, const char *prefix, int command_line_option, int quiet) { - int i, result = 0; - struct child_process cp = CHILD_PROCESS_INIT; - struct argv_array argv = ARGV_ARRAY_INIT; - const char *work_tree = get_git_work_tree(); - if (!work_tree) + int i; + int max_parallel_jobs = 1; + struct submodule_parallel_fetch spf = SPF_INIT; + + spf.work_tree = get_git_work_tree(); + spf.command_line_option = command_line_option; + spf.quiet = quiet; + spf.prefix = prefix; + + if (!spf.work_tree) goto out; if (read_cache() < 0) die("index file corrupt"); - argv_array_push(&argv, "fetch"); + argv_array_push(&spf.args, "fetch"); for (i = 0; i < options->argc; i++) - argv_array_push(&argv, options->argv[i]); - argv_array_push(&argv, "--recurse-submodules-default"); + argv_array_push(&spf.args, options->argv[i]); + argv_array_push(&spf.args, "--recurse-submodules-default"); /* default value, "--submodule-prefix" and its value are added later */ - cp.env = local_repo_env; - cp.git_cmd = 1; - cp.no_stdin = 1; - calculate_changed_submodule_paths(); + run_processes_parallel(max_parallel_jobs, &spf, + get_next_submodule, + handle_submodule_fetch_start_err, + handle_submodule_fetch_finish); + + argv_array_clear(&spf.args); +out: + string_list_clear(&changed_submodule_paths, 1); + return spf.result; +} + +int get_next_submodule(void *data, struct child_process *cp, + struct strbuf *err) +{ + int ret = 0; + struct submodule_parallel_fetch *spf = data; - for (i = 0; i < active_nr; i++) { + for ( ; spf->count < active_nr; spf->count++) { struct strbuf submodule_path = STRBUF_INIT; struct strbuf submodule_git_dir = STRBUF_INIT; struct strbuf submodule_prefix = STRBUF_INIT; - const struct cache_entry *ce = active_cache[i]; + const struct cache_entry *ce = active_cache[spf->count]; const char *git_dir, *default_argv; const struct submodule *submodule; @@ -657,7 +703,7 @@ int fetch_populated_submodules(const struct argv_array *options, submodule = submodule_from_name(null_sha1, ce->name); default_argv = "yes"; - if (command_line_option == RECURSE_SUBMODULES_DEFAULT) { + if (spf->command_line_option == RECURSE_SUBMODULES_DEFAULT) { if (submodule && submodule->fetch_recurse != RECURSE_SUBMODULES_NONE) { @@ -680,40 +726,45 @@ int fetch_populated_submodules(const struct argv_array *options, default_argv = "on-demand"; } } - } else if (command_line_option == RECURSE_SUBMODULES_ON_DEMAND) { + } else if (spf->command_line_option == RECURSE_SUBMODULES_ON_DEMAND) { if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name)) continue; default_argv = "on-demand"; } - strbuf_addf(&submodule_path, "%s/%s", work_tree, ce->name); + strbuf_addf(&submodule_path, "%s/%s", spf->work_tree, ce->name); strbuf_addf(&submodule_git_dir, "%s/.git", submodule_path.buf); - strbuf_addf(&submodule_prefix, "%s%s/", prefix, ce->name); + strbuf_addf(&submodule_prefix, "%s%s/", spf->prefix, ce->name); git_dir = read_gitfile(submodule_git_dir.buf); if (!git_dir) git_dir = submodule_git_dir.buf; if (is_directory(git_dir)) { - if (!quiet) - fprintf(stderr, "Fetching submodule %s%s\n", prefix, ce->name); - cp.dir = submodule_path.buf; - argv_array_push(&argv, default_argv); - argv_array_push(&argv, "--submodule-prefix"); - argv_array_push(&argv, submodule_prefix.buf); - cp.argv = argv.argv; - if (run_command(&cp)) - result = 1; - argv_array_pop(&argv); - argv_array_pop(&argv); - argv_array_pop(&argv); + child_process_init(cp); + cp->dir = strbuf_detach(&submodule_path, NULL); + cp->env = local_repo_env; + cp->git_cmd = 1; + cp->no_stdin = 1; + cp->stdout_to_stderr = 1; + cp->err = -1; + if (!spf->quiet) + strbuf_addf(err, "Fetching submodule %s%s\n", + spf->prefix, ce->name); + argv_array_init(&cp->args); + argv_array_pushv(&cp->args, spf->args.argv); + argv_array_push(&cp->args, default_argv); + argv_array_push(&cp->args, "--submodule-prefix"); + argv_array_push(&cp->args, submodule_prefix.buf); + ret = 1; } strbuf_release(&submodule_path); strbuf_release(&submodule_git_dir); strbuf_release(&submodule_prefix); + if (ret) { + spf->count++; + return 1; + } } - argv_array_clear(&argv); -out: - string_list_clear(&changed_submodule_paths, 1); - return result; + return 0; } unsigned is_submodule_modified(const char *path, int ignore_untracked) -- 2.5.0.272.ga84127c.dirty