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authorLinus Torvalds <torvalds@osdl.org>2006-06-14 23:45:13 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-06-18 01:49:18 (GMT)
commit885a86abe2e9f7b96a4e2012183c6751635840aa (patch)
treeb3fc0545d874cf62bee7e02ae1673722e434f8ad /builtin-grep.c
parent210a0be504829bad5a2821488d3c25cc406fed4a (diff)
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Shrink "struct object" a bit
This shrinks "struct object" by a small amount, by getting rid of the "struct type *" pointer and replacing it with a 3-bit bitfield instead. In addition, we merge the bitfields and the "flags" field, which incidentally should also remove a useless 4-byte padding from the object when in 64-bit mode. Now, our "struct object" is still too damn large, but it's now less obviously bloated, and of the remaining fields, only the "util" (which is not used by most things) is clearly something that should be eventually discarded. This shrinks the "git-rev-list --all" memory use by about 2.5% on the kernel archive (and, perhaps more importantly, on the larger mozilla archive). That may not sound like much, but I suspect it's more on a 64-bit platform. There are other remaining inefficiencies (the parent lists, for example, probably have horrible malloc overhead), but this was pretty obvious. Most of the patch is just changing the comparison of the "type" pointer from one of the constant string pointers to the appropriate new TYPE_xxx small integer constant. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'builtin-grep.c')
-rw-r--r--builtin-grep.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/builtin-grep.c b/builtin-grep.c
index 5fac570..9806499 100644
--- a/builtin-grep.c
+++ b/builtin-grep.c
@@ -630,10 +630,9 @@ static int grep_tree(struct grep_opt *opt, const char **paths,
static int grep_object(struct grep_opt *opt, const char **paths,
struct object *obj, const char *name)
{
- if (!strcmp(obj->type, blob_type))
+ if (obj->type == TYPE_BLOB)
return grep_sha1(opt, obj->sha1, name);
- if (!strcmp(obj->type, commit_type) ||
- !strcmp(obj->type, tree_type)) {
+ if (obj->type == TYPE_COMMIT || obj->type == TYPE_TREE) {
struct tree_desc tree;
void *data;
int hit;
@@ -646,7 +645,7 @@ static int grep_object(struct grep_opt *opt, const char **paths,
free(data);
return hit;
}
- die("unable to grep from object of type %s", obj->type);
+ die("unable to grep from object of type %s", typename(obj->type));
}
static const char builtin_grep_usage[] =