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Re: [PATCH 16/23] midx: prepare midxed_git struct




On Thu, Jun 7, 2018 at 7:02 PM Derrick Stolee <stolee@xxxxxxxxx> wrote:
>
> Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
> ---
>  midx.c         | 22 ++++++++++++++++++++++
>  midx.h         |  2 ++
>  object-store.h |  7 +++++++
>  packfile.c     |  6 +++++-
>  4 files changed, 36 insertions(+), 1 deletion(-)
>
> diff --git a/midx.c b/midx.c
> index a49300bf75..5e9290ca8f 100644
> --- a/midx.c
> +++ b/midx.c
> @@ -175,6 +175,28 @@ struct midxed_git *load_midxed_git(const char *object_dir)
>         exit(1);
>  }
>
> +int prepare_midxed_git_one(struct repository *r, const char *object_dir)
> +{
> +       struct midxed_git *m = r->objects->midxed_git;
> +       struct midxed_git *m_search;
> +
> +       if (!core_midx)
> +               return 0;
> +
> +       for (m_search = m; m_search; m_search = m_search->next)
> +               if (!strcmp(object_dir, m_search->object_dir))
> +                       return 1;
> +
> +       r->objects->midxed_git = load_midxed_git(object_dir);
> +
> +       if (r->objects->midxed_git) {
> +               r->objects->midxed_git->next = m;
> +               return 1;
> +       }
> +
> +       return 0;
> +}
> +
>  static size_t write_midx_header(struct hashfile *f,
>                                 unsigned char num_chunks,
>                                 uint32_t num_packs)
> diff --git a/midx.h b/midx.h
> index a1d18ed991..793203fc4a 100644
> --- a/midx.h
> +++ b/midx.h
> @@ -5,8 +5,10 @@
>  #include "cache.h"
>  #include "object-store.h"
>  #include "packfile.h"
> +#include "repository.h"
>
>  struct midxed_git *load_midxed_git(const char *object_dir);
> +int prepare_midxed_git_one(struct repository *r, const char *object_dir);
>
>  int write_midx_file(const char *object_dir);
>
> diff --git a/object-store.h b/object-store.h
> index 9b671f1b0a..7908d46e34 100644
> --- a/object-store.h
> +++ b/object-store.h
> @@ -130,6 +130,13 @@ struct raw_object_store {
>          */
>         struct oidmap *replace_map;
>
> +       /*
> +        * private data
> +        *
> +        * should only be accessed directly by packfile.c and midx.c
> +        */
> +       struct midxed_git *midxed_git;
> +
>         /*
>          * private data
>          *
> diff --git a/packfile.c b/packfile.c
> index 1a714fbde9..b91ca9b9f5 100644
> --- a/packfile.c
> +++ b/packfile.c
> @@ -15,6 +15,7 @@
>  #include "tree-walk.h"
>  #include "tree.h"
>  #include "object-store.h"
> +#include "midx.h"
>
>  char *odb_pack_name(struct strbuf *buf,
>                     const unsigned char *sha1,
> @@ -893,10 +894,13 @@ static void prepare_packed_git(struct repository *r)
>
>         if (r->objects->packed_git_initialized)
>                 return;
> +       prepare_midxed_git_one(r, r->objects->objectdir);
>         prepare_packed_git_one(r, r->objects->objectdir, 1);
>         prepare_alt_odb(r);
> -       for (alt = r->objects->alt_odb_list; alt; alt = alt->next)
> +       for (alt = r->objects->alt_odb_list; alt; alt = alt->next) {
> +               prepare_midxed_git_one(r, alt->path);
>                 prepare_packed_git_one(r, alt->path, 0);
> +       }

Ah, so the object path and the linked list in midxed_git is for
alternates. Makes sense. Would have saved me the trouble if you only
introduced those fields now, when they are actually used (and become
self explanatory)

>         rearrange_packed_git(r);
>         prepare_packed_git_mru(r);
>         r->objects->packed_git_initialized = 1;
> --
> 2.18.0.rc1
>
-- 
Duy