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make_transient_cache_entry(): optionally alloc from mem_pool

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Allow make_transient_cache_entry() to optionally receive a mem_pool
struct in which it should allocate the entry. This will be used in the
following patch, to store some transient entries which should persist
until parallel checkout finishes.

Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Matheus Tavares 2021-05-04 13:27:28 -03:00 committed by Junio C Hamano
parent 68e66f2987
commit 9616882780
6 changed files with 23 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
builtin/checkout--worker.c
View File

@ -39,7 +39,7 @@ static void packet_to_pc_item(const char *buffer, int len,
}
memset(pc_item, 0, sizeof(*pc_item));
pc_item->ce = make_empty_transient_cache_entry(fixed_portion->name_len);
pc_item->ce = make_empty_transient_cache_entry(fixed_portion->name_len, NULL);
pc_item->ce->ce_namelen = fixed_portion->name_len;
pc_item->ce->ce_mode = fixed_portion->ce_mode;
memcpy(pc_item->ce->name, variant, pc_item->ce->ce_namelen);

2
builtin/checkout.c
View File

@ -291,7 +291,7 @@ static int checkout_merged(int pos, const struct checkout *state, int *nr_checko
if (write_object_file(result_buf.ptr, result_buf.size, blob_type, &oid))
die(_("Unable to add merge result for '%s'"), path);
free(result_buf.ptr);
ce = make_transient_cache_entry(mode, &oid, path, 2);
ce = make_transient_cache_entry(mode, &oid, path, 2, NULL);
if (!ce)
die(_("make_cache_entry failed for path '%s'"), path);
status = checkout_entry(ce, state, NULL, nr_checkouts);

2
builtin/difftool.c
View File

@ -323,7 +323,7 @@ static int checkout_path(unsigned mode, struct object_id *oid,
struct cache_entry *ce;
int ret;
ce = make_transient_cache_entry(mode, oid, path, 0);
ce = make_transient_cache_entry(mode, oid, path, 0, NULL);
ret = checkout_entry(ce, state, NULL, NULL);
discard_cache_entry(ce);

14
cache.h
View File

@ -356,16 +356,20 @@ struct cache_entry *make_empty_cache_entry(struct index_state *istate,
size_t name_len);
/*
* Create a cache_entry that is not intended to be added to an index.
* Caller is responsible for discarding the cache_entry
* with `discard_cache_entry`.
* Create a cache_entry that is not intended to be added to an index. If
* `ce_mem_pool` is not NULL, the entry is allocated within the given memory
* pool. Caller is responsible for discarding "loose" entries with
* `discard_cache_entry()` and the memory pool with
* `mem_pool_discard(ce_mem_pool, should_validate_cache_entries())`.
*/
struct cache_entry *make_transient_cache_entry(unsigned int mode,
const struct object_id *oid,
const char *path,
int stage);
int stage,
struct mem_pool *ce_mem_pool);
struct cache_entry *make_empty_transient_cache_entry(size_t name_len);
struct cache_entry *make_empty_transient_cache_entry(size_t len,
struct mem_pool *ce_mem_pool);
/*
* Discard cache entry.

14
read-cache.c
View File

@ -813,8 +813,11 @@ struct cache_entry *make_empty_cache_entry(struct index_state *istate, size_t le
return mem_pool__ce_calloc(find_mem_pool(istate), len);
}
struct cache_entry *make_empty_transient_cache_entry(size_t len)
struct cache_entry *make_empty_transient_cache_entry(size_t len,
struct mem_pool *ce_mem_pool)
{
if (ce_mem_pool)
return mem_pool__ce_calloc(ce_mem_pool, len);
return xcalloc(1, cache_entry_size(len));
}
@ -848,8 +851,11 @@ struct cache_entry *make_cache_entry(struct index_state *istate,
return ret;
}
struct cache_entry *make_transient_cache_entry(unsigned int mode, const struct object_id *oid,
const char *path, int stage)
struct cache_entry *make_transient_cache_entry(unsigned int mode,
const struct object_id *oid,
const char *path,
int stage,
struct mem_pool *ce_mem_pool)
{
struct cache_entry *ce;
int len;
@ -860,7 +866,7 @@ struct cache_entry *make_transient_cache_entry(unsigned int mode, const struct o
}
len = strlen(path);
ce = make_empty_transient_cache_entry(len);
ce = make_empty_transient_cache_entry(len, ce_mem_pool);
oidcpy(&ce->oid, oid);
memcpy(ce->name, path, len);

2
unpack-trees.c
View File

@ -1034,7 +1034,7 @@ static struct cache_entry *create_ce_entry(const struct traverse_info *info,
size_t len = traverse_path_len(info, tree_entry_len(n));
struct cache_entry *ce =
is_transient ?
make_empty_transient_cache_entry(len) :
make_empty_transient_cache_entry(len, NULL) :
make_empty_cache_entry(istate, len);
ce->ce_mode = create_ce_mode(n->mode);