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From: Emily Shaffer <emilyshaffer@google.com>
To: git@vger.kernel.org
Cc: Emily Shaffer <emilyshaffer@google.com>
Subject: [PATCH v7 11/17] run-command: allow stdin for run_processes_parallel
Date: Mon, 21 Dec 2020 16:02:14 -0800	[thread overview]
Message-ID: <20201222000220.1491091-12-emilyshaffer@google.com> (raw)
In-Reply-To: <20201222000220.1491091-1-emilyshaffer@google.com>

While it makes sense not to inherit stdin from the parent process to
avoid deadlocking, it's not necessary to completely ban stdin to
children. An informed user should be able to configure stdin safely. By
setting `some_child.process.no_stdin=1` before calling `get_next_task()`
we provide a reasonable default behavior but enable users to set up
stdin streaming for themselves during the callback.

`some_child.process.stdout_to_stderr`, however, remains unmodifiable by
`get_next_task()` - the rest of the run_processes_parallel() API depends
on child output in stderr.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
---
 run-command.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/run-command.c b/run-command.c
index ea4d0fb4b1..80c8c97bc1 100644
--- a/run-command.c
+++ b/run-command.c
@@ -1683,6 +1683,9 @@ static int pp_start_one(struct parallel_processes *pp)
 	if (i == pp->max_processes)
 		BUG("bookkeeping is hard");
 
+	/* disallow by default, but allow users to set up stdin if they wish */
+	pp->children[i].process.no_stdin = 1;
+
 	code = pp->get_next_task(&pp->children[i].process,
 				 &pp->children[i].err,
 				 pp->data,
@@ -1694,7 +1697,6 @@ static int pp_start_one(struct parallel_processes *pp)
 	}
 	pp->children[i].process.err = -1;
 	pp->children[i].process.stdout_to_stderr = 1;
-	pp->children[i].process.no_stdin = 1;
 
 	if (start_command(&pp->children[i].process)) {
 		code = pp->start_failure(&pp->children[i].err,
-- 
2.28.0.rc0.142.g3c755180ce-goog


  parent reply	other threads:[~2020-12-22  0:04 UTC|newest]

Thread overview: 170+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-21 18:54 [PATCH v2 0/4] propose config-based hooks Emily Shaffer
2020-05-21 18:54 ` [PATCH v2 1/4] doc: propose hooks managed by the config Emily Shaffer
2020-05-22 10:13   ` Phillip Wood
2020-06-09 20:26     ` Emily Shaffer
2020-05-21 18:54 ` [PATCH v2 2/4] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-05-21 18:54 ` [PATCH v2 3/4] hook: add list command Emily Shaffer
2020-05-22 10:27   ` Phillip Wood
2020-06-09 21:49     ` Emily Shaffer
2020-08-17 13:36       ` Phillip Wood
2020-05-24 23:00   ` Johannes Schindelin
2020-05-27 23:37     ` Emily Shaffer
2020-05-21 18:54 ` [PATCH v2 4/4] hook: add --porcelain to " Emily Shaffer
2020-05-24 23:00   ` Johannes Schindelin
2020-05-25  0:29     ` Johannes Schindelin
2020-07-28 22:24 ` [PATCH v3 0/6] propose config-based hooks Emily Shaffer
2020-07-28 22:24   ` [PATCH v3 1/6] doc: propose hooks managed by the config Emily Shaffer
2020-07-28 22:24   ` [PATCH v3 2/6] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-07-28 22:24   ` [PATCH v3 3/6] hook: add list command Emily Shaffer
2020-07-28 22:24   ` [PATCH v3 4/6] hook: add --porcelain to " Emily Shaffer
2020-07-28 22:24   ` [RFC PATCH v3 5/6] parse-options: parse into argv_array Emily Shaffer
2020-07-29 19:33     ` Junio C Hamano
2020-07-30 23:41       ` Junio C Hamano
2020-07-28 22:24   ` [RFC PATCH v3 6/6] hook: add 'run' subcommand Emily Shaffer
2020-09-09  0:49   ` [PATCH v4 0/9] propose config-based hooks Emily Shaffer
2020-09-09  0:49     ` [PATCH v4 1/9] doc: propose hooks managed by the config Emily Shaffer
2020-09-23 22:59       ` Jonathan Tan
2020-09-24 21:54         ` Emily Shaffer
2020-10-07  9:23       ` Ævar Arnfjörð Bjarmason
2020-10-22  0:58         ` Emily Shaffer
2020-10-23 19:10           ` Ævar Arnfjörð Bjarmason
2020-10-29 15:38             ` Emily Shaffer
2020-10-29 20:04               ` Ævar Arnfjörð Bjarmason
2020-09-09  0:49     ` [PATCH v4 2/9] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-10-05 23:24       ` Jonathan Nieder
2020-10-06 19:06         ` Emily Shaffer
2020-09-09  0:49     ` [PATCH v4 3/9] hook: add list command Emily Shaffer
2020-09-11 13:27       ` Phillip Wood
2020-09-11 16:51         ` Emily Shaffer
2020-09-23 23:04       ` Jonathan Tan
2020-10-06 20:46         ` Emily Shaffer
2020-09-27 19:23       ` Martin Ågren
2020-10-06 20:20         ` Emily Shaffer
2020-10-05 23:27       ` Jonathan Nieder
2020-09-09  0:49     ` [PATCH v4 4/9] hook: add --porcelain to " Emily Shaffer
2020-09-28 19:29       ` Josh Steadmon
2020-09-09  0:49     ` [PATCH v4 5/9] parse-options: parse into strvec Emily Shaffer
2020-10-05 23:30       ` Jonathan Nieder
2020-10-06  4:49         ` Junio C Hamano
2020-09-09  0:49     ` [PATCH v4 6/9] hook: add 'run' subcommand Emily Shaffer
2020-09-11 13:30       ` Phillip Wood
2020-09-28 19:29       ` Josh Steadmon
2020-10-05 23:39       ` Jonathan Nieder
2020-10-06 22:57         ` Emily Shaffer
2020-09-09  0:49     ` [PATCH v4 7/9] hook: replace run-command.h:find_hook Emily Shaffer
2020-09-09 20:32       ` Junio C Hamano
2020-09-10 19:08         ` Emily Shaffer
2020-09-23 23:20       ` Jonathan Tan
2020-10-05 23:42       ` Jonathan Nieder
2020-09-09  0:49     ` [PATCH v4 8/9] commit: use config-based hooks Emily Shaffer
2020-09-10 13:50       ` Phillip Wood
2020-09-10 22:21         ` Junio C Hamano
2020-09-23 23:47       ` Jonathan Tan
2020-10-05 21:27         ` Emily Shaffer
2020-10-05 23:48           ` Jonathan Nieder
2020-10-06 19:08             ` Emily Shaffer
2020-09-09  0:49     ` [PATCH v4 9/9] run_commit_hook: take strvec instead of varargs Emily Shaffer
2020-09-10 14:16       ` Phillip Wood
2020-09-11 13:20         ` Phillip Wood
2020-09-09 21:04     ` [PATCH v4 0/9] propose config-based hooks Junio C Hamano
2020-10-14 23:24     ` [PATCH v5 0/8] propose config-based hooks (part I) Emily Shaffer
2020-10-14 23:24       ` [PATCH v5 1/8] doc: propose hooks managed by the config Emily Shaffer
2020-10-15 16:31         ` Ævar Arnfjörð Bjarmason
2020-10-16 17:29           ` Junio C Hamano
2020-10-21 23:37           ` Emily Shaffer
2020-10-14 23:24       ` [PATCH v5 2/8] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-10-14 23:24       ` [PATCH v5 3/8] hook: add list command Emily Shaffer
2020-10-14 23:24       ` [PATCH v5 4/8] hook: include hookdir hook in list Emily Shaffer
2020-10-14 23:24       ` [PATCH v5 5/8] hook: implement hookcmd.<name>.skip Emily Shaffer
2020-10-14 23:24       ` [PATCH v5 6/8] parse-options: parse into strvec Emily Shaffer
2020-10-14 23:24       ` [PATCH v5 7/8] hook: add 'run' subcommand Emily Shaffer
2020-10-14 23:24       ` [PATCH v5 8/8] hook: replace find_hook() with hook_exists() Emily Shaffer
2020-12-05  1:45       ` [PATCH v6 00/17] propose config-based hooks (part I) Emily Shaffer
2020-12-05  1:45         ` [PATCH 01/17] doc: propose hooks managed by the config Emily Shaffer
2020-12-05  1:45         ` [PATCH 02/17] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-12-05  1:45         ` [PATCH 03/17] hook: add list command Emily Shaffer
2020-12-05  1:45         ` [PATCH 04/17] hook: include hookdir hook in list Emily Shaffer
2020-12-05  1:45         ` [PATCH 05/17] hook: respect hook.runHookDir Emily Shaffer
2020-12-05  1:45         ` [PATCH 06/17] hook: implement hookcmd.<name>.skip Emily Shaffer
2020-12-05  1:45         ` [PATCH 07/17] parse-options: parse into strvec Emily Shaffer
2020-12-05  1:45         ` [PATCH 08/17] hook: add 'run' subcommand Emily Shaffer
2020-12-11 10:15           ` Phillip Wood
2020-12-15 21:41             ` Emily Shaffer
2020-12-05  1:45         ` [PATCH 09/17] hook: replace find_hook() with hook_exists() Emily Shaffer
2020-12-05  1:46         ` [PATCH 10/17] hook: support passing stdin to hooks Emily Shaffer
2020-12-05  1:46         ` [PATCH 11/17] run-command: allow stdin for run_processes_parallel Emily Shaffer
2020-12-05  1:46         ` [PATCH 12/17] hook: allow parallel hook execution Emily Shaffer
2020-12-05  1:46         ` [PATCH 13/17] hook: allow specifying working directory for hooks Emily Shaffer
2020-12-05  1:46         ` [PATCH 14/17] run-command: add stdin callback for parallelization Emily Shaffer
2020-12-05  1:46         ` [PATCH 15/17] hook: provide stdin by string_list or callback Emily Shaffer
2020-12-08 21:09           ` SZEDER Gábor
2020-12-08 22:11             ` Emily Shaffer
2020-12-05  1:46         ` [PATCH 16/17] run-command: allow capturing of collated output Emily Shaffer
2020-12-05  1:46         ` [PATCH 17/17] hooks: allow callers to capture output Emily Shaffer
2020-12-16  0:34         ` [PATCH v6 00/17] propose config-based hooks (part I) Josh Steadmon
2020-12-16  0:56           ` Junio C Hamano
2020-12-16 20:16             ` Emily Shaffer
2020-12-16 23:32               ` Junio C Hamano
2020-12-18  2:07                 ` Emily Shaffer
2020-12-18  5:29                   ` Junio C Hamano
2020-12-22  0:02         ` [PATCH v7 " Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 01/17] doc: propose hooks managed by the config Emily Shaffer
2021-01-23 15:38             ` Ævar Arnfjörð Bjarmason
2021-01-29 23:52               ` Emily Shaffer
2021-02-01 22:11             ` Junio C Hamano
2021-03-10 19:30               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 02/17] hook: scaffolding for git-hook subcommand Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 03/17] hook: add list command Emily Shaffer
2021-01-31  3:10             ` Jonathan Tan
2021-02-09 21:06               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 04/17] hook: include hookdir hook in list Emily Shaffer
2021-01-31  3:20             ` Jonathan Tan
2021-02-09 22:05               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 05/17] hook: respect hook.runHookDir Emily Shaffer
2021-01-31  3:35             ` Jonathan Tan
2021-02-09 22:31               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 06/17] hook: implement hookcmd.<name>.skip Emily Shaffer
2021-01-31  3:40             ` Jonathan Tan
2021-02-09 22:57               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 07/17] parse-options: parse into strvec Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 08/17] hook: add 'run' subcommand Emily Shaffer
2021-01-31  4:22             ` Jonathan Tan
2021-02-11 22:44               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 09/17] hook: replace find_hook() with hook_exists() Emily Shaffer
2021-01-31  4:39             ` Jonathan Tan
2021-02-12 22:15               ` Emily Shaffer
2021-02-18 22:23               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 10/17] hook: support passing stdin to hooks Emily Shaffer
2020-12-22  0:02           ` Emily Shaffer [this message]
2021-02-01  5:38             ` [PATCH v7 11/17] run-command: allow stdin for run_processes_parallel Jonathan Tan
2021-02-19 20:23               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 12/17] hook: allow parallel hook execution Emily Shaffer
2021-02-01  6:04             ` Jonathan Tan
2021-02-22 21:46               ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 13/17] hook: allow specifying working directory for hooks Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 14/17] run-command: add stdin callback for parallelization Emily Shaffer
2021-02-01  6:51             ` Jonathan Tan
2021-02-22 23:38               ` Emily Shaffer
2021-02-23 19:33                 ` Jonathan Tan
2021-03-10 18:24                   ` Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 15/17] hook: provide stdin by string_list or callback Emily Shaffer
2021-02-01  7:04             ` Jonathan Tan
2021-02-23 19:52               ` Emily Shaffer
2021-02-25 20:56                 ` Jonathan Tan
2021-03-02  1:47                   ` Emily Shaffer
2021-03-02 23:33                     ` Jonathan Tan
2020-12-22  0:02           ` [PATCH v7 16/17] run-command: allow capturing of collated output Emily Shaffer
2020-12-22  0:02           ` [PATCH v7 17/17] hooks: allow callers to capture output Emily Shaffer
2020-12-22  2:11           ` [PATCH v7 00/17] propose config-based hooks (part I) Junio C Hamano
2020-12-28 18:34             ` Emily Shaffer
2020-12-28 22:50               ` Junio C Hamano
2020-12-28 22:37           ` [PATCH v3 18/17] doc: make git-hook.txt point of truth Emily Shaffer
2020-12-28 22:39             ` Emily Shaffer
2021-01-29 23:59           ` [PATCH v7 00/17] propose config-based hooks (part I) Emily Shaffer
2021-02-16 19:46           ` Josh Steadmon
2021-02-16 22:47             ` Junio C Hamano
2021-02-17 21:21               ` Josh Steadmon
2021-02-17 23:07                 ` Junio C Hamano
2021-02-25 19:50                   ` Junio C Hamano
2021-03-01 21:51                     ` Emily Shaffer
2021-03-01 22:19                       ` Junio C Hamano

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