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submodule update: expose parallelism to the user

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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.

Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller
2016-02-29 18:07:19 -08:00
committed by Junio C Hamano
parent cdc04b65b4
commit 2335b870fa
4 changed files with 34 additions and 2 deletions
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8
builtin/submodule--helper.c
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@ -430,6 +430,7 @@ static int update_clone_task_finished(int result,
static int update_clone(int argc, const char **argv, const char *prefix)
{
const char *update = NULL;
int max_jobs = -1;
struct string_list_item *item;
struct pathspec pathspec;
struct submodule_update_clone suc = SUBMODULE_UPDATE_CLONE_INIT;
@ -450,6 +451,8 @@ static int update_clone(int argc, const char **argv, const char *prefix)
OPT_STRING(0, "depth", &suc.depth, "<depth>",
N_("Create a shallow clone truncated to the "
"specified number of revisions")),
OPT_INTEGER('j', "jobs", &max_jobs,
N_("parallel jobs")),
OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
OPT_END()
};
@ -477,7 +480,10 @@ static int update_clone(int argc, const char **argv, const char *prefix)
gitmodules_config();
git_config(submodule_config, NULL);
run_processes_parallel(1,
if (max_jobs < 0)
max_jobs = parallel_submodules();
run_processes_parallel(max_jobs,
update_clone_get_next_task,
update_clone_start_failure,
update_clone_task_finished,