The routines pack-objects uses to perform verbatim pack-reuse are:
- write_reused_pack_one()
- write_reused_pack_verbatim()
- write_reused_pack()
, all of which assume that there is exactly one packfile being reused:
the global constant `reuse_packfile`.
Prepare for reusing objects from multiple packs by making reuse packfile
a parameter of each of the above functions in preparation for calling
these functions in a loop with multiple packfiles.
Note that we still have the global "reuse_packfile", but pass it through
each of the above function's parameter lists, eliminating all but one
direct access (the top-level caller in `write_pack_file()`). Even after
this series, we will still have a global, but it will hold the array of
reusable packfiles, and we'll pass them one at a time to these functions
in a loop.
Note also that we will eventually need to pass a `bitmapped_pack`
instead of a `packed_git` in order to hold onto additional information
required for reuse (such as the bit position of the first object
belonging to that pack). But that change will be made in a future commit
so as to minimize the noise below as much as possible.
Signed-off-by: Taylor Blau <me@xxxxxxxxxxxx>
---
builtin/pack-objects.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 87e16636a8..102fe9a4f8 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -1013,7 +1013,8 @@ static off_t find_reused_offset(off_t where)
return reused_chunks[lo-1].difference;
}
-static void write_reused_pack_one(size_t pos, struct hashfile *out,
+static void write_reused_pack_one(struct packed_git *reuse_packfile,
+ size_t pos, struct hashfile *out,
struct pack_window **w_curs)
{
off_t offset, next, cur;
@@ -1091,7 +1092,8 @@ static void write_reused_pack_one(size_t pos, struct hashfile *out,
copy_pack_data(out, reuse_packfile, w_curs, offset, next - offset);
}
-static size_t write_reused_pack_verbatim(struct hashfile *out,
+static size_t write_reused_pack_verbatim(struct packed_git *reuse_packfile,
+ struct hashfile *out,
struct pack_window **w_curs)
{
size_t pos = 0;
@@ -1118,14 +1120,15 @@ static size_t write_reused_pack_verbatim(struct hashfile *out,
return pos;
}
-static void write_reused_pack(struct hashfile *f)
+static void write_reused_pack(struct packed_git *reuse_packfile,
+ struct hashfile *f)
{
size_t i = 0;
uint32_t offset;
struct pack_window *w_curs = NULL;
if (allow_ofs_delta)
- i = write_reused_pack_verbatim(f, &w_curs);
+ i = write_reused_pack_verbatim(reuse_packfile, f, &w_curs);
for (; i < reuse_packfile_bitmap->word_alloc; ++i) {
eword_t word = reuse_packfile_bitmap->words[i];
@@ -1141,7 +1144,8 @@ static void write_reused_pack(struct hashfile *f)
* bitmaps. See comment in try_partial_reuse()
* for why.
*/
- write_reused_pack_one(pos + offset, f, &w_curs);
+ write_reused_pack_one(reuse_packfile, pos + offset, f,
+ &w_curs);
display_progress(progress_state, ++written);
}
}
@@ -1199,7 +1203,7 @@ static void write_pack_file(void)
if (reuse_packfile) {
assert(pack_to_stdout);
- write_reused_pack(f);
+ write_reused_pack(reuse_packfile, f);
offset = hashfile_total(f);
}
--
2.43.0.102.ga31d690331.dirty
