[PATCH v2 19/22] run-command.c: don't copy "data" to "struct parallel_processes"

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

As with the *_fn members removed in a preceding commit, let's not copy
the "data" member of the "struct run_process_parallel_opts" over to
the "struct parallel_processes". Now that we're passing the "opts"
down there's no reason to do so.

This makes the code easier to follow, as we have a "const" attribute
on the "struct run_process_parallel_opts", but not "struct
parallel_processes". We do not alter the "ungroup" argument, so
storing it in the non-const structure would make this control flow
less obvious.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 run-command.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/run-command.c b/run-command.c
index 2b1cfbc996f..d07ee759b34 100644
--- a/run-command.c
+++ b/run-command.c
@@ -1495,8 +1495,6 @@ enum child_state {
 };
 
 struct parallel_processes {
-	void *const data;
-
 	const size_t max_processes;
 	size_t nr_processes;
 
@@ -1607,7 +1605,7 @@ static int pp_start_one(struct parallel_processes *pp,
 
 	code = opts->get_next_task(&pp->children[i].process,
 				   opts->ungroup ? NULL : &pp->children[i].err,
-				   pp->data,
+				   opts->data,
 				   &pp->children[i].data);
 	if (!code) {
 		if (!opts->ungroup) {
@@ -1626,7 +1624,7 @@ static int pp_start_one(struct parallel_processes *pp,
 		if (opts->start_failure)
 			code = opts->start_failure(opts->ungroup ? NULL :
 						   &pp->children[i].err,
-						   pp->data,
+						   opts->data,
 						   pp->children[i].data);
 		else
 			code = 0;
@@ -1701,7 +1699,7 @@ static int pp_collect_finished(struct parallel_processes *pp,
 
 		if (opts->task_finished)
 			code = opts->task_finished(code, opts->ungroup ? NULL :
-						   &pp->children[i].err, pp->data,
+						   &pp->children[i].err, opts->data,
 						   pp->children[i].data);
 		else
 			code = 0;
@@ -1754,7 +1752,6 @@ void run_processes_parallel(const struct run_process_parallel_opts *opts)
 	int spawn_cap = 4;
 	struct parallel_processes pp = {
 		.max_processes = opts->processes,
-		.data = opts->data,
 		.buffered_output = STRBUF_INIT,
 	};
 	/* options */
-- 
2.38.0.971.ge79ff6d20e7