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From: Jonathan Tan <jonathantanmy@google.com>
To: git@vger.kernel.org
Cc: Jonathan Tan <jonathantanmy@google.com>, peff@peff.net, mh@glandium.org
Subject: [PATCH 5/6] index-pack: make resolve_delta() assume base data
Date: Wed,  9 Oct 2019 16:44:21 -0700
Message-ID: <6fcda102acd550818536c69c41c270a8058050a7.1570663470.git.jonathantanmy@google.com> (raw)
In-Reply-To: <cover.1570663470.git.jonathantanmy@google.com>

A subsequent commit will make the quantum of work smaller, necessitating
more locking. This commit allows resolve_delta() to be called outside
the lock.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
---
 builtin/index-pack.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 17997834ec..3908cd3115 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -926,7 +926,7 @@ static struct base_data *make_base(struct object_entry *obj,
 static struct base_data *resolve_delta(struct object_entry *delta_obj,
 				       struct base_data *base)
 {
-	void *base_data, *delta_data, *result_data;
+	void *delta_data, *result_data;
 	struct base_data *result;
 	unsigned long result_size;
 
@@ -941,8 +941,8 @@ static struct base_data *resolve_delta(struct object_entry *delta_obj,
 		obj_stat[i].base_object_no = j;
 	}
 	delta_data = get_data_from_pack(delta_obj);
-	base_data = get_base_data(base);
-	result_data = patch_delta(base_data, base->size,
+	assert(base->data);
+	result_data = patch_delta(base->data, base->size,
 				  delta_data, delta_obj->size, &result_size);
 	free(delta_data);
 	if (!result_data)
@@ -1000,6 +1000,7 @@ static struct base_data *find_unresolved_deltas_1(struct base_data *base,
 					   base->obj->real_type))
 			BUG("child->real_type != OBJ_REF_DELTA");
 
+		get_base_data(base);
 		result = resolve_delta(child, base);
 		if (base->ref_first == base->ref_last && base->ofs_last == -1)
 			free_base_data(base);
@@ -1014,6 +1015,7 @@ static struct base_data *find_unresolved_deltas_1(struct base_data *base,
 
 		assert(child->real_type == OBJ_OFS_DELTA);
 		child->real_type = base->obj->real_type;
+		get_base_data(base);
 		result = resolve_delta(child, base);
 		if (base->ofs_first == base->ofs_last)
 			free_base_data(base);
-- 
2.23.0.581.g78d2f28ef7-goog


  parent reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09 23:44 [RFC PATCH 0/6] Better threaded delta resolution in index-pack Jonathan Tan
2019-10-09 23:44 ` [PATCH 1/6] index-pack: unify threaded and unthreaded code Jonathan Tan
2019-10-17  6:20   ` Jeff King
2019-10-09 23:44 ` [PATCH 2/6] index-pack: remove redundant parameter Jonathan Tan
2019-10-17  6:21   ` Jeff King
2019-10-09 23:44 ` [PATCH 3/6] index-pack: remove redundant child field Jonathan Tan
2019-10-10 14:45   ` Derrick Stolee
2019-10-10 19:02     ` Jonathan Tan
2019-10-17  6:24       ` Jeff King
2019-10-17  6:26   ` Jeff King
2019-10-09 23:44 ` [PATCH 4/6] index-pack: calculate {ref,ofs}_{first,last} early Jonathan Tan
2019-10-17  6:30   ` Jeff King
2019-10-09 23:44 ` Jonathan Tan [this message]
2019-10-17  6:32   ` [PATCH 5/6] index-pack: make resolve_delta() assume base data Jeff King
2019-10-09 23:44 ` [PATCH 6/6] index-pack: make quantum of work smaller Jonathan Tan
2019-10-17  6:35   ` Jeff King
2019-10-17 20:17 ` [PATCH v2 0/7] Better threaded delta resolution in index-pack Jonathan Tan
2019-10-17 20:17   ` [PATCH v2 1/7] Documentation: deltaBaseCacheLimit is per-thread Jonathan Tan
2019-10-17 20:17   ` [PATCH v2 2/7] index-pack: unify threaded and unthreaded code Jonathan Tan
2019-10-17 20:17   ` [PATCH v2 3/7] index-pack: remove redundant parameter Jonathan Tan
2019-10-17 20:17   ` [PATCH v2 4/7] index-pack: remove redundant child field Jonathan Tan
2019-10-17 20:17   ` [PATCH v2 5/7] index-pack: calculate {ref,ofs}_{first,last} early Jonathan Tan
2019-10-17 20:17   ` [PATCH v2 6/7] index-pack: make resolve_delta() assume base data Jonathan Tan
2019-10-17 20:17   ` [PATCH v2 7/7] index-pack: make quantum of work smaller Jonathan Tan

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