зеркало из https://github.com/microsoft/git.git
streaming.c: stop passing around "object_info *" to open()
Change the streaming interface to stop passing around the "struct
object_info" the open() functions.
As seen in 7ef2d9a260
(streaming: read non-delta incrementally from a
pack, 2011-05-13) which introduced the "st->u.in_pack" assignments
being changed here only the open_istream_pack_non_delta() path need
these.
So let's instead do this when preparing the selected callback in the
istream_source() function. This might also allow the compiler to
reduce the lifetime of the "oi" variable, as we've moved it from
"git_istream()" to "istream_source()".
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Родитель
bc062ad001
Коммит
de94c0eace
42
streaming.c
42
streaming.c
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@ -10,7 +10,6 @@
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typedef int (*open_istream_fn)(struct git_istream *,
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struct repository *,
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struct object_info *,
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const struct object_id *,
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enum object_type *);
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typedef int (*close_istream_fn)(struct git_istream *);
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@ -232,7 +231,6 @@ static struct stream_vtbl loose_vtbl = {
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};
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static int open_istream_loose(struct git_istream *st, struct repository *r,
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struct object_info *oi,
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const struct object_id *oid,
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enum object_type *type)
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{
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@ -337,15 +335,12 @@ static struct stream_vtbl pack_non_delta_vtbl = {
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static int open_istream_pack_non_delta(struct git_istream *st,
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struct repository *r,
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struct object_info *oi,
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const struct object_id *oid,
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enum object_type *type)
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{
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struct pack_window *window;
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enum object_type in_pack_type;
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st->u.in_pack.pack = oi->u.packed.pack;
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st->u.in_pack.pos = oi->u.packed.offset;
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window = NULL;
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in_pack_type = unpack_object_header(st->u.in_pack.pack,
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@ -400,8 +395,7 @@ static struct stream_vtbl incore_vtbl = {
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};
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static int open_istream_incore(struct git_istream *st, struct repository *r,
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struct object_info *oi, const struct object_id *oid,
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enum object_type *type)
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const struct object_id *oid, enum object_type *type)
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{
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st->u.incore.buf = read_object_file_extended(r, oid, type, &st->size, 0);
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st->u.incore.read_ptr = 0;
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@ -414,26 +408,30 @@ static int open_istream_incore(struct git_istream *st, struct repository *r,
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* static helpers variables and functions for users of streaming interface
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*****************************************************************************/
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static open_istream_fn istream_source(struct repository *r,
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static open_istream_fn istream_source(struct git_istream *st,
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struct repository *r,
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const struct object_id *oid,
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enum object_type *type,
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struct object_info *oi)
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enum object_type *type)
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{
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unsigned long size;
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int status;
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struct object_info oi = OBJECT_INFO_INIT;
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oi->typep = type;
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oi->sizep = &size;
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status = oid_object_info_extended(r, oid, oi, 0);
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oi.typep = type;
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oi.sizep = &size;
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status = oid_object_info_extended(r, oid, &oi, 0);
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if (status < 0)
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return NULL;
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switch (oi->whence) {
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switch (oi.whence) {
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case OI_LOOSE:
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return open_istream_loose;
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case OI_PACKED:
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if (!oi->u.packed.is_delta && big_file_threshold < size)
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if (!oi.u.packed.is_delta && big_file_threshold < size) {
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st->u.in_pack.pack = oi.u.packed.pack;
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st->u.in_pack.pos = oi.u.packed.offset;
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return open_istream_pack_non_delta;
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}
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/* fallthru */
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default:
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return open_istream_incore;
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@ -462,17 +460,17 @@ struct git_istream *open_istream(struct repository *r,
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unsigned long *size,
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struct stream_filter *filter)
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{
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struct git_istream *st;
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struct object_info oi = OBJECT_INFO_INIT;
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struct git_istream *st = xmalloc(sizeof(*st));
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const struct object_id *real = lookup_replace_object(r, oid);
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open_istream_fn open_fn = istream_source(r, real, type, &oi);
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open_istream_fn open_fn = istream_source(st, r, real, type);
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if (!open_fn)
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if (!open_fn) {
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free(st);
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return NULL;
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}
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st = xmalloc(sizeof(*st));
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if (open_fn(st, r, &oi, real, type)) {
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if (open_istream_incore(st, r, &oi, real, type)) {
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if (open_fn(st, r, real, type)) {
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if (open_istream_incore(st, r, real, type)) {
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free(st);
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return NULL;
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}
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