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| author |  Martin Koegler <mkoegler@auto.tuwien.ac.at> | 2008-02-25 22:46:10 +0100 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2008-02-28 21:54:14 -0800 |
| commit | 2add1e6db44c81e19cd4263317b53f3c1339e61b (patch) | |
| tree | 0fb41efee542e8f0a05f8067b7c23700f3734fd4 | |
| parent | add common fsck error printing function (diff) | |
| download | tgif-2add1e6db44c81e19cd4263317b53f3c1339e61b.tar.xz | |
unpack-object: cache for non written objects
Preventing objects with broken links entering the repository
means, that write of some objects must be delayed.
This patch adds a cache to keep the object data in memory. The delta
resolving code must also search in the cache.
Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | builtin-unpack-objects.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/builtin-unpack-objects.c b/builtin-unpack-objects.c index 1e51865c52..50e07faa12 100644 --- a/builtin-unpack-objects.c +++ b/builtin-unpack-objects.c @@ -8,6 +8,7 @@ #include "tag.h" #include "tree.h" #include "progress.h" +#include "decorate.h" static int dry_run, quiet, recover, has_errors; static const char unpack_usage[] = "git-unpack-objects [-n] [-q] [-r] < pack-file"; @@ -18,6 +19,18 @@ static unsigned int offset, len; static off_t consumed_bytes; static SHA_CTX ctx; +struct obj_buffer { + char *buffer; + unsigned long size; +}; + +static struct decoration obj_decorate; + +static struct obj_buffer *lookup_object_buffer(struct object *base) +{ + return lookup_decoration(&obj_decorate, base); +} + /* * Make sure at least "min" bytes are available in the buffer, and * return the pointer to the buffer. @@ -189,6 +202,7 @@ static void unpack_delta_entry(enum object_type type, unsigned long delta_size, void *delta_data, *base; unsigned long base_size; unsigned char base_sha1[20]; + struct object *obj; if (type == OBJ_REF_DELTA) { hashcpy(base_sha1, fill(20)); @@ -252,6 +266,15 @@ static void unpack_delta_entry(enum object_type type, unsigned long delta_size, } } + obj = lookup_object(base_sha1); + if (obj) { + struct obj_buffer *obj_buf = lookup_object_buffer(obj); + if (obj_buf) { + resolve_delta(nr, obj->type, obj_buf->buffer, obj_buf->size, delta_data, delta_size); + return; + } + } + base = read_sha1_file(base_sha1, &type, &base_size); if (!base) { error("failed to read delta-pack base object %s", |