From c4dee2c0851f3a6b202afd2c9d979ed417f4bcdc Mon Sep 17 00:00:00 2001
From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Thu, 9 Sep 2021 09:47:08 +0000
Subject: Close object store closer to spawning child processes

In many cases where we spawned child processes that _may_ trigger a
repack, we explicitly closed the object store first (so that the
`repack` process can delete the `.pack` files, which would otherwise not
be possible on Windows since files cannot be deleted as long as they as
still in use).

Wherever possible, we now use the new `close_object_store` bit of the
`run_command()` API, to delay closing the object store even further.
This makes the code easier to maintain because it is now more obvious
that we only release those file handles because of those child
processes.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/gc.c b/builtin/gc.c
index f05d2f0..ddee9f8 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -663,8 +663,8 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
 	gc_before_repack();
 
 	if (!repository_format_precious_objects) {
-		close_object_store(the_repository->objects);
-		if (run_command_v_opt(repack.v, RUN_GIT_CMD))
+		if (run_command_v_opt(repack.v,
+				      RUN_GIT_CMD | RUN_CLOSE_OBJECT_STORE))
 			die(FAILED_RUN, repack.v[0]);
 
 		if (prune_expire) {
@@ -848,7 +848,7 @@ static int run_write_commit_graph(struct maintenance_run_opts *opts)
 {
 	struct child_process child = CHILD_PROCESS_INIT;
 
-	child.git_cmd = 1;
+	child.git_cmd = child.close_object_store = 1;
 	strvec_pushl(&child.args, "commit-graph", "write",
 		     "--split", "--reachable", NULL);
 
@@ -864,7 +864,6 @@ static int maintenance_task_commit_graph(struct maintenance_run_opts *opts)
 	if (!the_repository->settings.core_commit_graph)
 		return 0;
 
-	close_object_store(the_repository->objects);
 	if (run_write_commit_graph(opts)) {
 		error(_("failed to write commit-graph"));
 		return 1;
@@ -913,7 +912,7 @@ static int maintenance_task_gc(struct maintenance_run_opts *opts)
 {
 	struct child_process child = CHILD_PROCESS_INIT;
 
-	child.git_cmd = 1;
+	child.git_cmd = child.close_object_store = 1;
 	strvec_push(&child.args, "gc");
 
 	if (opts->auto_flag)
@@ -923,7 +922,6 @@ static int maintenance_task_gc(struct maintenance_run_opts *opts)
 	else
 		strvec_push(&child.args, "--no-quiet");
 
-	close_object_store(the_repository->objects);
 	return run_command(&child);
 }
 
@@ -1097,14 +1095,12 @@ static int multi_pack_index_expire(struct maintenance_run_opts *opts)
 {
 	struct child_process child = CHILD_PROCESS_INIT;
 
-	child.git_cmd = 1;
+	child.git_cmd = child.close_object_store = 1;
 	strvec_pushl(&child.args, "multi-pack-index", "expire", NULL);
 
 	if (opts->quiet)
 		strvec_push(&child.args, "--no-progress");
 
-	close_object_store(the_repository->objects);
-
 	if (run_command(&child))
 		return error(_("'git multi-pack-index expire' failed"));
 
@@ -1155,7 +1151,7 @@ static int multi_pack_index_repack(struct maintenance_run_opts *opts)
 {
 	struct child_process child = CHILD_PROCESS_INIT;
 
-	child.git_cmd = 1;
+	child.git_cmd = child.close_object_store = 1;
 	strvec_pushl(&child.args, "multi-pack-index", "repack", NULL);
 
 	if (opts->quiet)
@@ -1164,8 +1160,6 @@ static int multi_pack_index_repack(struct maintenance_run_opts *opts)
 	strvec_pushf(&child.args, "--batch-size=%"PRIuMAX,
 				  (uintmax_t)get_auto_pack_size());
 
-	close_object_store(the_repository->objects);
-
 	if (run_command(&child))
 		return error(_("'git multi-pack-index repack' failed"));
 
diff --git a/builtin/pull.c b/builtin/pull.c
index d9f0156..7513720 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -578,7 +578,7 @@ static int run_fetch(const char *repo, const char **refspecs)
 		strvec_pushv(&args, refspecs);
 	} else if (*refspecs)
 		BUG("refspecs without repo?");
-	ret = run_command_v_opt(args.v, RUN_GIT_CMD);
+	ret = run_command_v_opt(args.v, RUN_GIT_CMD | RUN_CLOSE_OBJECT_STORE);
 	strvec_clear(&args);
 	return ret;
 }
@@ -999,7 +999,6 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 			oidclr(&rebase_fork_point);
 	}
 
-	close_object_store(the_repository->objects);
 	if (run_fetch(repo, refspecs))
 		return 1;
 
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 2d1f97e..9d5e0e3 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -2580,10 +2580,9 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
 			proc.no_stdin = 1;
 			proc.stdout_to_stderr = 1;
 			proc.err = use_sideband ? -1 : 0;
-			proc.git_cmd = 1;
+			proc.git_cmd = proc.close_object_store = 1;
 			proc.argv = argv_gc_auto;
 
-			close_object_store(the_repository->objects);
 			if (!start_command(&proc)) {
 				if (use_sideband)
 					copy_to_sideband(proc.err, -1, NULL);
-- 
cgit v0.10.2-6-g49f6