Re: [PATCH 4/4] replace_object: use the new generic "sha1_pos" function to lookup sha1

From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Apr 5, 2009, 13:19 UTC
Message-ID: <alpine.DEB.1.00.0904051516170.10279@pacific.mpi-cbg.de>
In-Reply-To: <20090404225941.7fef76a7.chriscool@tuxfamily.org>

Hi,

On Sat, 4 Apr 2009, Christian Couder wrote:

Show 26 quoted lines

> instead of the specific one that was simpler but less efficient.
> 
> Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
> ---
>  replace_object.c |   24 +++++++++---------------
>  1 files changed, 9 insertions(+), 15 deletions(-)
> 
> diff --git a/replace_object.c b/replace_object.c
> index 1227214..eb59604 100644
> --- a/replace_object.c
> +++ b/replace_object.c
> @@ -1,4 +1,5 @@
>  #include "cache.h"
> +#include "sha1-lookup.h"
>  #include "refs.h"
>  
>  static struct replace_object {
> @@ -7,23 +8,16 @@ static struct replace_object {
>  
>  static int replace_object_alloc, replace_object_nr;
>  
> +static const unsigned char *replace_sha1_access(size_t index, void *table)
> +{
> +	struct replace_object **replace = table;
> +	return replace[index]->sha1[0];
> +}

I have to agree with Junio that this is potentially slowing down things, as there is an additional redirection layer here.

If the tables are not too large, I'd prefer using a

	struct sha1_list_entry {
		unsigned char *sha1;
		void *object;
	};

Hmm.

Ciao, Dscho