user/sven/git.git/diff-delta.c, branch v1.4.4.4

Revert "move pack creation to version 3"

2006-10-15T06:38:01Z

This reverts commit 16854571aae6302f457c5fbee41ac64669b09595. Git as recent as v1.1.6 do not understand version 3 delta. v1.2.0 is Ok and I personally would say it is old enough, but the improvement between version 2 and version 3 delta is not bit enough to justify breaking older clients. We should resurrect this later, but when we do so we shold make it conditional. Signed-off-by: Junio C Hamano

move pack creation to version 3

2006-09-23T02:24:52Z

It's been quite a while now that GIT is able to read version 3 packs. Let's create them at last. Signed-off-by: Nicolas Pitre Signed-off-by: Junio C Hamano

Use xrealloc instead of realloc

2006-08-27T00:54:06Z

Change places that use realloc, without a proper error path, to instead use xrealloc. Drop an erroneous error path in the daemon code that used errno in the die message in favour of the simpler xrealloc. Signed-off-by: Jonas Fonseca Signed-off-by: Junio C Hamano

Fix a comparison bug in diff-delta.c

2006-08-23T10:05:27Z

(1 << i) < hspace is compared in the `int` space rather that in the unsigned one. the result will be wrong if hspace is between 0x40000000 and 0x80000000. Signed-off-by: Pierre Habouzit Signed-off-by: Junio C Hamano

Fix more typos, primarily in the code

2006-07-10T07:36:44Z

The only visible change is that git-blame doesn't understand "--compability" anymore, but it does accept "--compatibility" instead, which is already documented. Signed-off-by: Pavel Roskin Signed-off-by: Junio C Hamano

Remove all void-pointer arithmetic.

2006-06-20T08:59:46Z

ANSI C99 doesn't allow void-pointer arithmetic. This patch fixes this in various ways. Usually the strategy that required the least changes was used. Signed-off-by: Florian Forster Signed-off-by: Junio C Hamano

Initialize FAMs using `FLEX_ARRAY'.

2006-06-19T04:19:09Z

When initializing a `flexible array member' the macro `FLEX_ARRAY' should be used. This was forgotten in `diff-delta.c'. Signed-off-by: Florian Forster Signed-off-by: Junio C Hamano

fix diff-delta bad memory access

2006-05-10T17:53:59Z

It cannot be assumed that the given buffer will never be moved when shrinking the allocated memory size with realloc(). So let's ignore that optimization for now. This patch makes Electric Fence happy on Linux. Signed-off-by: Nicolas Pitre Acked-by: Linus Torvalds Signed-off-by: Junio C Hamano

improve diff-delta with sparse and/or repetitive data

2006-05-03T04:32:39Z

It is useless to preserve multiple hash entries for consecutive blocks with the same hash. Keeping only the first one will allow for matching the longest string of identical bytes while subsequent blocks will only allow for shorter matches. The backward matching code will match the end of it as necessary. This improves both performances (no repeated string compare with long successions of identical bytes, or even small group of bytes), as well as compression (less likely to need random hash bucket entry culling), especially with sparse files. With well behaved data sets this patch doesn't change much. Signed-off-by: Nicolas Pitre Signed-off-by: Junio C Hamano

tiny optimization to diff-delta

2006-05-03T04:32:32Z

This is my assembly freak side looking at generated code again. And since create_delta() is certainly pretty high on the radar every bits count. In this case shorter code is generated if hash_mask is not copied to a local variable. Signed-off-by: Nicolas Pitre Signed-off-by: Junio C Hamano