On 12/17, Thomas Gummerer wrote:
> be489d02d2 ("revision.c: --indexed-objects add objects from all
> worktrees", 2017-08-23) made sure that pruning takes objects from all
> worktrees into account.
>
> It did that by reading the index of every worktree and adding the
> necessary index objects to the set of pending objects. The index is
> read by read_index_from. As mentioned in the previous commit,
> read_index_from depends on the CWD for the location of the split index,
As I mentioned before this doesn't actually depend on the CWD but
rather the per-worktree gitdir.
> and add_index_objects_to_pending doesn't set that before using
> read_index_from.
>
> Instead of using read_index_from, use repo_read_index, which is aware of
> the proper paths for the worktree.
>
> This fixes t5304-prune when ran with GIT_TEST_SPLIT_INDEX set.
>
> Signed-off-by: Thomas Gummerer <t.gumme...@gmail.com>
> ---
> repository.c | 11 +++++++++++
> repository.h | 2 ++
> revision.c | 14 +++++++++-----
> 3 files changed, 22 insertions(+), 5 deletions(-)
>
> diff --git a/repository.c b/repository.c
> index 928b1f553d..3c9bfbd1b8 100644
> --- a/repository.c
> +++ b/repository.c
> @@ -2,6 +2,7 @@
> #include "repository.h"
> #include "config.h"
> #include "submodule-config.h"
> +#include "worktree.h"
>
> /* The main repository */
> static struct repository the_repo = {
> @@ -146,6 +147,16 @@ int repo_init(struct repository *repo, const char
> *gitdir, const char *worktree)
> return -1;
> }
>
> +/*
> + * Initialize 'repo' based on the provided worktree
> + * Return 0 upon success and a non-zero value upon failure.
> + */
> +int repo_worktree_init(struct repository *repo, struct worktree *worktree)
> +{
> + return repo_init(repo, get_worktree_git_dir(worktree),
> + worktree->path);
I still feel very unsettled about this and don't think its a good idea.
get_worktree_git_dir depends implicitly on the global the_repository
object and I would like to avoid relying on it for an initialization
function like this.
> +}
> +
> /*
> * Initialize 'submodule' as the submodule given by 'path' in parent
> repository
> * 'superproject'.
> diff --git a/repository.h b/repository.h
> index 7f5e24a0a2..2adeb05bf4 100644
> --- a/repository.h
> +++ b/repository.h
> @@ -4,6 +4,7 @@
> struct config_set;
> struct index_state;
> struct submodule_cache;
> +struct worktree;
>
> struct repository {
> /* Environment */
> @@ -87,6 +88,7 @@ extern struct repository *the_repository;
> extern void repo_set_gitdir(struct repository *repo, const char *path);
> extern void repo_set_worktree(struct repository *repo, const char *path);
> extern int repo_init(struct repository *repo, const char *gitdir, const char
> *worktree);
> +extern int repo_worktree_init(struct repository *repo, struct worktree
> *worktree);
> extern int repo_submodule_init(struct repository *submodule,
> struct repository *superproject,
> const char *path);
> diff --git a/revision.c b/revision.c
> index e2e691dd5a..34e1e4b799 100644
> --- a/revision.c
> +++ b/revision.c
> @@ -22,6 +22,7 @@
> #include "packfile.h"
> #include "worktree.h"
> #include "argv-array.h"
> +#include "repository.h"
>
> volatile show_early_output_fn_t show_early_output;
>
> @@ -1346,15 +1347,18 @@ void add_index_objects_to_pending(struct rev_info
> *revs, unsigned int flags)
> worktrees = get_worktrees(0);
> for (p = worktrees; *p; p++) {
> struct worktree *wt = *p;
> - struct index_state istate = { NULL };
> + struct repository *repo;
>
> + repo = xmalloc(sizeof(struct repository));
> if (wt->is_current)
> continue; /* current index already taken care of */
> + if (repo_worktree_init(repo, wt))
> + BUG("couldn't initialize repository object from
> worktree");
>
> - if (read_index_from(&istate,
> - worktree_git_path(wt, "index")) > 0)
Ok, after thinking this through a bit more I think a better approach may
be to restructure the call to read_index_from to take in both an index
file as well as the explicit gitdir to use when constructing a path to
the sharedindex file. That way you can fix this for worktrees and
submodules without having to pass in a repository object to the logic
which is reading an index file as well as avoiding needing to init a
repository object for every worktree.
So you could rework the first patch to do something like:
diff --git a/read-cache.c b/read-cache.c
index 2eb81a66b..3a04b5567 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -1863,20 +1863,19 @@ int do_read_index(struct index_state *istate, const
char *path, int must_exist)
* This way, shared index can be removed if they have not been used
* for some time.
*/
-static void freshen_shared_index(char *base_sha1_hex, int warn)
+static void freshen_shared_index(const char *shared_index, int warn)
{
- char *shared_index = git_pathdup("sharedindex.%s", base_sha1_hex);
if (!check_and_freshen_file(shared_index, 1) && warn)
warning("could not freshen shared index '%s'", shared_index);
- free(shared_index);
}
-int read_index_from(struct index_state *istate, const char *path)
+int read_index_from(struct index_state *istate, const char *path,
+ const char *gitdir)
{
struct split_index *split_index;
int ret;
char *base_sha1_hex;
- const char *base_path;
+ char *base_path;
/* istate->initialized covers both .git/index and .git/sharedindex.xxx
*/
if (istate->initialized)
@@ -1896,14 +1895,14 @@ int read_index_from(struct index_state *istate, const
char *path)
split_index->base = xcalloc(1, sizeof(*split_index->base));
base_sha1_hex = sha1_to_hex(split_index->base_sha1);
- base_path = git_path("sharedindex.%s", base_sha1_hex);
+ base_path = xstrfmt("%s/sharedindex.%s", gitdir, base_sha1_hex);
ret = do_read_index(split_index->base, base_path, 1);
if (hashcmp(split_index->base_sha1, split_index->base->sha1))
die("broken index, expect %s in %s, got %s",
base_sha1_hex, base_path,
sha1_to_hex(split_index->base->sha1));
- freshen_shared_index(base_sha1_hex, 0);
+ freshen_shared_index(base_path, 0);
merge_base_index(istate);
post_read_index_from(istate);
+ free(base_path);
return ret;
--
Brandon Williams
