On Thu, Feb 11, 2016 at 05:28:36PM -0500, Jeff King wrote:

> +void show_object_with_name(FILE *out, struct object *obj, const char *name)
> [...]
>       fprintf(out, "%s ", oid_to_hex(&obj->oid));
>       for (p = name; *p && *p != '\n'; p++)
>               fputc(*p, out);
>       fputc('\n', out);

By the way, since I was timing things, I wondered if we would see any
improvement from using putc_unlocked, like:

diff --git a/revision.c b/revision.c
index 82f3ca4..ab72247 100644
--- a/revision.c
+++ b/revision.c
@@ -30,9 +30,11 @@ void show_object_with_name(FILE *out, struct object *obj, 
const char *name)
        const char *p;
 
        fprintf(out, "%s ", oid_to_hex(&obj->oid));
+       flockfile(out);
        for (p = name; *p && *p != '\n'; p++)
-               fputc(*p, out);
-       fputc('\n', out);
+               putc_unlocked(*p, out);
+       putc_unlocked('\n', out);
+       funlockfile(out);
 }
 
 static void mark_blob_uninteresting(struct blob *blob)

But I couldn't measure any speedup. I imagine if you had 500MB pathnames
you might see some improvement, but I don't think it is even worth the
extra lines of code to worry about such a pathological case.

-Peff
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