diff options
Diffstat (limited to 'pack-objects.c')
| -rw-r--r-- | pack-objects.c | 45 |
1 files changed, 28 insertions, 17 deletions
diff --git a/pack-objects.c b/pack-objects.c index 47da33baa3..b486ea528a 100644 --- a/pack-objects.c +++ b/pack-objects.c @@ -970,11 +970,12 @@ struct unpacked { * one. */ static int try_delta(struct unpacked *trg, struct unpacked *src, - struct delta_index *src_index, unsigned max_depth) + unsigned max_depth) { struct object_entry *trg_entry = trg->entry; struct object_entry *src_entry = src->entry; - unsigned long size, src_size, delta_size, sizediff, max_size; + unsigned long trg_size, src_size, delta_size, sizediff, max_size, sz; + char type[10]; void *delta_buf; /* Don't bother doing diffs between different types */ @@ -1009,19 +1010,38 @@ static int try_delta(struct unpacked *trg, struct unpacked *src, return 0; /* Now some size filtering heuristics. */ - size = trg_entry->size; - max_size = size/2 - 20; + trg_size = trg_entry->size; + max_size = trg_size/2 - 20; max_size = max_size * (max_depth - src_entry->depth) / max_depth; if (max_size == 0) return 0; if (trg_entry->delta && trg_entry->delta_size <= max_size) max_size = trg_entry->delta_size-1; src_size = src_entry->size; - sizediff = src_size < size ? size - src_size : 0; + sizediff = src_size < trg_size ? trg_size - src_size : 0; if (sizediff >= max_size) return 0; - delta_buf = create_delta(src_index, trg->data, size, &delta_size, max_size); + /* Load data if not already done */ + if (!trg->data) { + trg->data = read_sha1_file(trg_entry->sha1, type, &sz); + if (sz != trg_size) + die("object %s inconsistent object length (%lu vs %lu)", + sha1_to_hex(trg_entry->sha1), sz, trg_size); + } + if (!src->data) { + src->data = read_sha1_file(src_entry->sha1, type, &sz); + if (sz != src_size) + die("object %s inconsistent object length (%lu vs %lu)", + sha1_to_hex(src_entry->sha1), sz, src_size); + } + if (!src->index) { + src->index = create_delta_index(src->data, src_size); + if (!src->index) + die("out of memory"); + } + + delta_buf = create_delta(src->index, trg->data, trg_size, &delta_size, max_size); if (!delta_buf) return 0; @@ -1054,8 +1074,6 @@ static void find_deltas(struct object_entry **list, int window, int depth) while (--i >= 0) { struct object_entry *entry = list[i]; struct unpacked *n = array + idx; - unsigned long size; - char type[10]; int j; if (!entry->preferred_base) @@ -1082,11 +1100,8 @@ static void find_deltas(struct object_entry **list, int window, int depth) free_delta_index(n->index); n->index = NULL; free(n->data); + n->data = NULL; n->entry = entry; - n->data = read_sha1_file(entry->sha1, type, &size); - if (size != entry->size) - die("object %s inconsistent object length (%lu vs %lu)", - sha1_to_hex(entry->sha1), size, entry->size); j = window; while (--j > 0) { @@ -1097,7 +1112,7 @@ static void find_deltas(struct object_entry **list, int window, int depth) m = array + other_idx; if (!m->entry) break; - if (try_delta(n, m, m->index, depth) < 0) + if (try_delta(n, m, depth) < 0) break; } /* if we made n a delta, and if n is already at max @@ -1107,10 +1122,6 @@ static void find_deltas(struct object_entry **list, int window, int depth) if (entry->delta && depth <= entry->depth) continue; - n->index = create_delta_index(n->data, size); - if (!n->index) - die("out of memory"); - idx++; if (idx >= window) idx = 0; |