The --jobs parameter may be used to set the degree of per-submodule
parallel execution.
Signed-off-by: Stefan Zager <sza...@google.com>
---
Documentation/git-submodule.txt | 8 ++++++-
git-submodule.sh | 40 ++++++++++++++++++++++++++++++++++++++-
2 files changed, 46 insertions(+), 2 deletions(-)
diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt
index b4683bb..cb23ba7 100644
--- a/Documentation/git-submodule.txt
+++ b/Documentation/git-submodule.txt
@@ -14,7 +14,8 @@ SYNOPSIS
'git submodule' [--quiet] status [--cached] [--recursive] [--] [<path>...]
'git submodule' [--quiet] init [--] [<path>...]
'git submodule' [--quiet] update [--init] [-N|--no-fetch] [--rebase]
- [--reference <repository>] [--merge] [--recursive] [--]
[<path>...]
+ [--reference <repository>] [--merge] [--recursive]
+ [-j|--jobs [jobs]] [--] [<path>...]
'git submodule' [--quiet] summary [--cached|--files] [(-n|--summary-limit) <n>]
[commit] [--] [<path>...]
'git submodule' [--quiet] foreach [--recursive] <command>
@@ -146,6 +147,11 @@ If the submodule is not yet initialized, and you just want
to use the
setting as stored in .gitmodules, you can automatically initialize the
submodule with the `--init` option.
+
+By default, each submodule is treated serially. You may specify a degree of
+parallel execution with the --jobs flag. If a parameter is provided, it is
+the maximum number of jobs to run in parallel; without a parameter, all jobs
are
+run in parallel.
++
If `--recursive` is specified, this command will recurse into the
registered submodules, and update any nested submodules within.
+
diff --git a/git-submodule.sh b/git-submodule.sh
index ab6b110..60a5f96 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -8,7 +8,7 @@ dashless=$(basename "$0" | sed -e 's/-/ /')
USAGE="[--quiet] add [-b branch] [-f|--force] [--reference <repository>] [--]
<repository> [<path>]
or: $dashless [--quiet] status [--cached] [--recursive] [--] [<path>...]
or: $dashless [--quiet] init [--] [<path>...]
- or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force]
[--rebase] [--reference <repository>] [--merge] [--recursive] [--] [<path>...]
+ or: $dashless [--quiet] update [--init] [-N|--no-fetch] [-f|--force]
[--rebase] [--reference <repository>] [--merge] [--recursive] [-j|--jobs
[jobs]] [--] [<path>...]
or: $dashless [--quiet] summary [--cached|--files] [--summary-limit <n>]
[commit] [--] [<path>...]
or: $dashless [--quiet] foreach [--recursive] <command>
or: $dashless [--quiet] sync [--] [<path>...]"
@@ -500,6 +500,7 @@ cmd_update()
{
# parse $args after "submodule ... update".
orig_flags=
+ jobs="1"
while test $# -ne 0
do
case "$1" in
@@ -518,6 +519,20 @@ cmd_update()
-r|--rebase)
update="rebase"
;;
+ -j|--jobs)
+ case "$2" in
+ ''|-*)
+ jobs="0"
+ ;;
+ *)
+ jobs="$2"
+ shift
+ ;;
+ esac
+ # Don't preserve this arg.
+ shift
+ continue
+ ;;
--reference)
case "$2" in '') usage ;; esac
reference="--reference=$2"
@@ -551,11 +566,34 @@ cmd_update()
shift
done
+ # Correctly handle the case where '-q' came before 'update' on the
command line.
+ if test -n "$GIT_QUIET"
+ then
+ orig_flags="$orig_flags -q"
+ fi
+
if test -n "$init"
then
cmd_init "--" "$@" || return
fi
+ if test "$jobs" != 1
+ then
+ if ( echo test | xargs -P "$jobs" true 2>/dev/null )
+ then
+ if ( echo test | xargs --max-lines=1 true 2>/dev/null
); then
+ max_lines="--max-lines=1"
+ else
+ max_lines="-L 1"
+ fi
+ module_list "$@" | awk '{print $4}' |
+ xargs $max_lines -P "$jobs" git submodule update
$orig_flags
+ return
+ else
+ echo "Warn: parallel execution is not supported on this
platform."
+ fi
+ fi
+
cloned_modules=
module_list "$@" | {
err=
--
1.7.7.3
--
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