git/refs/packed-backend.h
Junio C Hamano 991b4d47f0 Merge branch 'ps/avoid-unnecessary-hook-invocation-with-packed-refs'
Because a deletion of ref would need to remove it from both the
loose ref store and the packed ref store, a delete-ref operation
that logically removes one ref may end up invoking ref-transaction
hook twice, which has been corrected.

* ps/avoid-unnecessary-hook-invocation-with-packed-refs:
  refs: skip hooks when deleting uncovered packed refs
  refs: do not execute reference-transaction hook on packing refs
  refs: demonstrate excessive execution of the reference-transaction hook
  refs: allow skipping the reference-transaction hook
  refs: allow passing flags when beginning transactions
  refs: extract packed_refs_delete_refs() to allow control of transaction
2022-02-18 13:53:27 -08:00

47 lines
1.5 KiB
C

#ifndef REFS_PACKED_BACKEND_H
#define REFS_PACKED_BACKEND_H
struct repository;
struct ref_transaction;
struct string_list;
/*
* Support for storing references in a `packed-refs` file.
*
* Note that this backend doesn't check for D/F conflicts, because it
* doesn't care about them. But usually it should be wrapped in a
* `files_ref_store` that prevents D/F conflicts from being created,
* even among packed refs.
*/
struct ref_store *packed_ref_store_create(struct repository *repo,
const char *gitdir,
unsigned int store_flags);
/*
* Lock the packed-refs file for writing. Flags is passed to
* hold_lock_file_for_update(). Return 0 on success. On errors, write
* an error message to `err` and return a nonzero value.
*/
int packed_refs_lock(struct ref_store *ref_store, int flags, struct strbuf *err);
void packed_refs_unlock(struct ref_store *ref_store);
int packed_refs_is_locked(struct ref_store *ref_store);
int packed_refs_delete_refs(struct ref_store *ref_store,
struct ref_transaction *transaction,
const char *msg,
struct string_list *refnames,
unsigned int flags);
/*
* Return true if `transaction` really needs to be carried out against
* the specified packed_ref_store, or false if it can be skipped
* (i.e., because it is an obvious NOOP). `ref_store` must be locked
* before calling this function.
*/
int is_packed_transaction_needed(struct ref_store *ref_store,
struct ref_transaction *transaction);
#endif /* REFS_PACKED_BACKEND_H */