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authorNicolas Pitre <nico@cam.org>2006-09-26 11:27:39 -0400
committerJunio C Hamano <junkio@cox.net>2006-09-27 00:12:00 -0700
commite4fe4b8ef7cdde842a9e5e2594d0fba1367d9dd3 (patch)
tree4a5d5a74da17b42637095fa451f3d11c739fe665
parent780e6e735be189097dad4b223d8edeb18cce1928 (diff)
downloadgit-e4fe4b8ef7cdde842a9e5e2594d0fba1367d9dd3.tar.gz
git-e4fe4b8ef7cdde842a9e5e2594d0fba1367d9dd3.tar.xz
let the GIT native protocol use offsets to delta base when possible
There is no reason not to always do this when both ends agree. Therefore a client that can accept offsets to delta base always sends the "ofs-delta" flag. The server will stream a pack with or without offset to delta base depending on whether that flag is provided or not with no additional cost. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
-rw-r--r--fetch-pack.c5
-rw-r--r--upload-pack.c10
2 files changed, 10 insertions, 5 deletions
diff --git a/fetch-pack.c b/fetch-pack.c
index e8708aa80..474d54520 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -166,12 +166,13 @@ static int find_common(int fd[2], unsigned char *result_sha1,
}
if (!fetching)
- packet_write(fd[1], "want %s%s%s%s%s\n",
+ packet_write(fd[1], "want %s%s%s%s%s%s\n",
sha1_to_hex(remote),
(multi_ack ? " multi_ack" : ""),
(use_sideband == 2 ? " side-band-64k" : ""),
(use_sideband == 1 ? " side-band" : ""),
- (use_thin_pack ? " thin-pack" : ""));
+ (use_thin_pack ? " thin-pack" : ""),
+ " ofs-delta");
else
packet_write(fd[1], "want %s\n", sha1_to_hex(remote));
fetching++;
diff --git a/upload-pack.c b/upload-pack.c
index 189b239cc..9ec377504 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -16,7 +16,7 @@ static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=n
#define OUR_REF (1U << 1)
#define WANTED (1U << 2)
static int multi_ack, nr_our_refs;
-static int use_thin_pack;
+static int use_thin_pack, use_ofs_delta;
static struct object_array have_obj;
static struct object_array want_obj;
static unsigned int timeout;
@@ -137,7 +137,9 @@ static void create_pack_file(void)
close(pu_pipe[1]);
close(pe_pipe[0]);
close(pe_pipe[1]);
- execl_git_cmd("pack-objects", "--stdout", "--progress", NULL);
+ execl_git_cmd("pack-objects", "--stdout", "--progress",
+ use_ofs_delta ? "--delta-base-offset" : NULL,
+ NULL);
kill(pid_rev_list, SIGKILL);
die("git-upload-pack: unable to exec git-pack-objects");
}
@@ -393,6 +395,8 @@ static void receive_needs(void)
multi_ack = 1;
if (strstr(line+45, "thin-pack"))
use_thin_pack = 1;
+ if (strstr(line+45, "ofs-delta"))
+ use_ofs_delta = 1;
if (strstr(line+45, "side-band-64k"))
use_sideband = LARGE_PACKET_MAX;
else if (strstr(line+45, "side-band"))
@@ -418,7 +422,7 @@ static void receive_needs(void)
static int send_ref(const char *refname, const unsigned char *sha1)
{
- static const char *capabilities = "multi_ack thin-pack side-band side-band-64k";
+ static const char *capabilities = "multi_ack thin-pack side-band side-band-64k ofs-delta";
struct object *o = parse_object(sha1);
if (!o)