[PATCH v2 19/19] hashmap: remove type arg from hashmap_{get,put,remove}_entry
- From
- Eric Wong <e@80x24.org>
- Date
- Sep 24, 2019, 01:03 UTC
- Message-ID
- <20190924010324.22619-20-e@80x24.org>
- In-Reply-To
- <20190924010324.22619-1-e@80x24.org>
Since these macros already take a `keyvar' pointer of a known type, we can rely on OFFSETOF_VAR to get the correct offset without relying on non-portable `__typeof__' and `offsetof'.
Argument order is also rearranged, so `keyvar' and `member' are sequential as they are used as: `keyvar->member'
Signed-off-by: Eric Wong <e@80x24.org> --- attr.c | 2 +- blame.c | 10 ++++----- builtin/difftool.c | 2 +- builtin/fast-export.c | 2 +- config.c | 3 +-- diff.c | 6 ++---- hashmap.c | 2 +- hashmap.h | 45 ++++++++++++++++++++++++++++++----------- merge-recursive.c | 6 ++---- name-hash.c | 3 +-- patch-ids.c | 3 +-- range-diff.c | 4 +--- remote.c | 3 +-- revision.c | 3 +-- sub-process.c | 3 +-- submodule-config.c | 10 +++------ t/helper/test-hashmap.c | 4 +--- 17 files changed, 56 insertions(+), 55 deletions(-)
diff --git a/attr.c b/attr.c index 9849106627..15f0efdf60 100644 --- a/attr.c +++ b/attr.c @@ -103,7 +103,7 @@ static void *attr_hashmap_get(struct attr_hashmap *map, hashmap_entry_init(&k.ent, memhash(key, keylen)); k.key = key; k.keylen = keylen; - e = hashmap_get_entry(&map->map, &k, NULL, struct attr_hash_entry, ent); + e = hashmap_get_entry(&map->map, &k, ent, NULL); return e ? e->value : NULL; } diff --git a/blame.c b/blame.c index 90b247abf9..6384f48133 100644 --- a/blame.c +++ b/blame.c @@ -419,8 +419,8 @@ static void get_fingerprint(struct fingerprint *result, continue; hashmap_entry_init(&entry->entry, hash); - found_entry = hashmap_get_entry(&result->map, entry, NULL, - struct fingerprint_entry, entry); + found_entry = hashmap_get_entry(&result->map, entry, + /* member name */ entry, NULL); if (found_entry) { found_entry->count += 1; } else { @@ -452,8 +452,7 @@ static int fingerprint_similarity(struct fingerprint *a, struct fingerprint *b) hashmap_for_each_entry(&b->map, &iter, entry_b, entry /* member name */) { - entry_a = hashmap_get_entry(&a->map, entry_b, NULL, - struct fingerprint_entry, entry); + entry_a = hashmap_get_entry(&a->map, entry_b, entry, NULL); if (entry_a) { intersection += entry_a->count < entry_b->count ? entry_a->count : entry_b->count; @@ -474,8 +473,7 @@ static void fingerprint_subtract(struct fingerprint *a, struct fingerprint *b) hashmap_for_each_entry(&b->map, &iter, entry_b, entry /* member name */) { - entry_a = hashmap_get_entry(&a->map, entry_b, NULL, - struct fingerprint_entry, entry); + entry_a = hashmap_get_entry(&a->map, entry_b, entry, NULL); if (entry_a) { if (entry_a->count <= entry_b->count) hashmap_remove(&a->map, &entry_b->entry, NULL); diff --git a/builtin/difftool.c b/builtin/difftool.c index f2d4d1e0f8..c280e682b2 100644 --- a/builtin/difftool.c +++ b/builtin/difftool.c @@ -167,7 +167,7 @@ static void add_left_or_right(struct hashmap *map, const char *path, FLEX_ALLOC_STR(e, path, path); hashmap_entry_init(&e->entry, strhash(path)); - existing = hashmap_get_entry(map, e, NULL, struct pair_entry, entry); + existing = hashmap_get_entry(map, e, entry, NULL); if (existing) { free(e); e = existing; diff --git a/builtin/fast-export.c b/builtin/fast-export.c index ef0578bf90..e3de403efd 100644 --- a/builtin/fast-export.c +++ b/builtin/fast-export.c @@ -156,7 +156,7 @@ static const void *anonymize_mem(struct hashmap *map, hashmap_entry_init(&key.hash, memhash(orig, *len)); key.orig = orig; key.orig_len = *len; - ret = hashmap_get_entry(map, &key, NULL, struct anonymized_entry, hash); + ret = hashmap_get_entry(map, &key, hash, NULL); if (!ret) { ret = xmalloc(sizeof(*ret)); diff --git a/config.c b/config.c index 77ed00bfbf..a4fa464ed2 100644 --- a/config.c +++ b/config.c @@ -1863,8 +1863,7 @@ static struct config_set_element *configset_find_element(struct config_set *cs, hashmap_entry_init(&k.ent, strhash(normalized_key)); k.key = normalized_key; - found_entry = hashmap_get_entry(&cs->config_hash, &k, NULL, - struct config_set_element, ent); + found_entry = hashmap_get_entry(&cs->config_hash, &k, ent, NULL); free(normalized_key); return found_entry; } diff --git a/diff.c b/diff.c index 051de9832d..a9ecb93af3 100644 --- a/diff.c +++ b/diff.c @@ -1146,15 +1146,13 @@ static void mark_color_as_moved(struct diff_options *o, case DIFF_SYMBOL_PLUS: hm = del_lines; key = prepare_entry(o, n); - match = hashmap_get_entry(hm, key, NULL, - struct moved_entry, ent); + match = hashmap_get_entry(hm, key, ent, NULL); free(key); break; case DIFF_SYMBOL_MINUS: hm = add_lines; key = prepare_entry(o, n); - match = hashmap_get_entry(hm, key, NULL, - struct moved_entry, ent); + match = hashmap_get_entry(hm, key, ent, NULL); free(key); break; default: diff --git a/hashmap.c b/hashmap.c index 1efd5e431b..83358226c0 100644 --- a/hashmap.c +++ b/hashmap.c @@ -311,7 +311,7 @@ const void *memintern(const void *data, size_t len) /* lookup interned string in pool */ hashmap_entry_init(&key.ent, memhash(data, len)); key.len = len; - e = hashmap_get_entry(&map, &key, data, struct pool_entry, ent); + e = hashmap_get_entry(&map, &key, ent, data); if (!e) { /* not found: create it */ FLEX_ALLOC_MEM(e, data, data, len); diff --git a/hashmap.h b/hashmap.h index 519213a812..407bc10913 100644 --- a/hashmap.h +++ b/hashmap.h @@ -63,7 +63,7 @@ * k.key = key; * * flags &= ~COMPARE_VALUE; - * e = hashmap_get_entry(&map, &k, NULL, struct long2string, ent); + * e = hashmap_get_entry(&map, &k, ent, NULL); * if (e) { * printf("first: %ld %s\n", e->key, e->value); * while ((e = hashmap_get_next_entry(&map, e, @@ -359,8 +359,17 @@ void hashmap_add(struct hashmap *map, struct hashmap_entry *entry); struct hashmap_entry * hashmap_put(struct hashmap *map, struct hashmap_entry *entry); -#define hashmap_put_entry(map, keyvar, type, member) \ - container_of_or_null(hashmap_put(map, &(keyvar)->member), type, member) +/* + * Adds or replaces a hashmap entry contained within @keyvar, + * where @keyvar is a pointer to a struct containing a + * "struct hashmap_entry" @member. + * + * Returns the replaced pointer which is of the same type as @keyvar, + * or NULL if not found. + */ +#define hashmap_put_entry(map, keyvar, member) \ + container_of_or_null_offset(hashmap_put(map, &(keyvar)->member), \ + OFFSETOF_VAR(keyvar, member)) /* * Removes a hashmap entry matching the specified key. If the hashmap contains @@ -373,9 +382,20 @@ struct hashmap_entry * hashmap_remove(struct hashmap *map, const struct hashmap_entry *key, const void *keydata); -#define hashmap_remove_entry(map, keyvar, keydata, type, member) \ - container_of_or_null(hashmap_remove(map, &(keyvar)->member, keydata), \ - type, member) +/* + * Removes a hashmap entry contained within @keyvar, + * where @keyvar is a pointer to a struct containing a + * "struct hashmap_entry" @member. + * + * See `hashmap_get` for an explanation of @keydata + * + * Returns the replaced pointer which is of the same type as @keyvar, + * or NULL if not found. + */ +#define hashmap_remove_entry(map, keyvar, member, keydata) \ + container_of_or_null_offset( \ + hashmap_remove(map, &(keyvar)->member, keydata), \ + OFFSETOF_VAR(keyvar, member)) /* * Returns the `bucket` an entry is stored in. @@ -436,13 +456,14 @@ static inline struct hashmap_entry *hashmap_iter_first(struct hashmap *map, OFFSETOF_VAR(var, member))) /* - * returns a @pointer of @type matching @keyvar, or NULL if nothing found. - * @keyvar is a pointer of @type - * @member is the name of the "struct hashmap_entry" field in @type + * returns a pointer of type matching @keyvar, or NULL if nothing found. + * @keyvar is a pointer to a struct containing a + * "struct hashmap_entry" @member. */ -#define hashmap_get_entry(map, keyvar, keydata, type, member) \ - container_of_or_null(hashmap_get(map, &(keyvar)->member, keydata), \ - type, member) +#define hashmap_get_entry(map, keyvar, member, keydata) \ + container_of_or_null_offset( \ + hashmap_get(map, &(keyvar)->member, keydata), \ + OFFSETOF_VAR(keyvar, member)) #define hashmap_get_entry_from_hash(map, hash, keydata, type, member) \ container_of_or_null(hashmap_get_from_hash(map, hash, keydata), \ diff --git a/merge-recursive.c b/merge-recursive.c index 3abba3a618..8787a40b0c 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -65,8 +65,7 @@ static struct dir_rename_entry *dir_rename_find_entry(struct hashmap *hashmap, return NULL; hashmap_entry_init(&key.ent, strhash(dir)); key.dir = dir; - return hashmap_get_entry(hashmap, &key, NULL, - struct dir_rename_entry, ent); + return hashmap_get_entry(hashmap, &key, ent, NULL); } static int dir_rename_cmp(const void *unused_cmp_data, @@ -104,8 +103,7 @@ static struct collision_entry *collision_find_entry(struct hashmap *hashmap, hashmap_entry_init(&key.ent, strhash(target_file)); key.target_file = target_file; - return hashmap_get_entry(hashmap, &key, NULL, - struct collision_entry, ent); + return hashmap_get_entry(hashmap, &key, ent, NULL); } static int collision_cmp(const void *unused_cmp_data, diff --git a/name-hash.c b/name-hash.c index 3cda22b657..ceb1d7bd6f 100644 --- a/name-hash.c +++ b/name-hash.c @@ -37,8 +37,7 @@ static struct dir_entry *find_dir_entry__hash(struct index_state *istate, struct dir_entry key; hashmap_entry_init(&key.ent, hash); key.namelen = namelen; - return hashmap_get_entry(&istate->dir_hash, &key, name, - struct dir_entry, ent); + return hashmap_get_entry(&istate->dir_hash, &key, ent, name); } static struct dir_entry *find_dir_entry(struct index_state *istate, diff --git a/patch-ids.c b/patch-ids.c index af17828e33..12aa6d494b 100644 --- a/patch-ids.c +++ b/patch-ids.c @@ -101,8 +101,7 @@ struct patch_id *has_commit_patch_id(struct commit *commit, if (init_patch_id_entry(&patch, commit, ids)) return NULL; - return hashmap_get_entry(&ids->patches, &patch, NULL, - struct patch_id, ent); + return hashmap_get_entry(&ids->patches, &patch, ent, NULL); } struct patch_id *add_commit_patch_id(struct commit *commit, diff --git a/range-diff.c b/range-diff.c index 9df53569bb..22ad959cee 100644 --- a/range-diff.c +++ b/range-diff.c @@ -229,9 +229,7 @@ static void find_exact_matches(struct string_list *a, struct string_list *b) util->patch = b->items[i].string; util->diff = util->patch + util->diff_offset; hashmap_entry_init(&util->e, strhash(util->diff)); - other = hashmap_remove_entry(&map, util, NULL, - struct patch_util, - e /* member name */); + other = hashmap_remove_entry(&map, util, e, NULL); if (other) { if (other->matching >= 0) BUG("already assigned!"); diff --git a/remote.c b/remote.c index 5fcddcd88d..5c4666b53a 100644 --- a/remote.c +++ b/remote.c @@ -162,8 +162,7 @@ static struct remote *make_remote(const char *name, int len) remotes[remotes_nr++] = ret; hashmap_entry_init(&ret->ent, lookup_entry.hash); - replaced = hashmap_put_entry(&remotes_hash, ret, struct remote, - ent /* member name */); + replaced = hashmap_put_entry(&remotes_hash, ret, ent); assert(replaced == NULL); /* no previous entry overwritten */ return ret; } diff --git a/revision.c b/revision.c index 5abd4a1fe7..6688f89d0d 100644 --- a/revision.c +++ b/revision.c @@ -151,8 +151,7 @@ static void paths_and_oids_insert(struct hashmap *map, key.path = (char *)path; oidset_init(&key.trees, 0); - entry = hashmap_get_entry(map, &key, NULL, - struct path_and_oids_entry, ent); + entry = hashmap_get_entry(map, &key, ent, NULL); if (!entry) { entry = xcalloc(1, sizeof(struct path_and_oids_entry)); hashmap_entry_init(&entry->ent, hash); diff --git a/sub-process.c b/sub-process.c index ad94f72665..1b1af9dcbd 100644 --- a/sub-process.c +++ b/sub-process.c @@ -24,8 +24,7 @@ struct subprocess_entry *subprocess_find_entry(struct hashmap *hashmap, const ch hashmap_entry_init(&key.ent, strhash(cmd)); key.cmd = cmd; - return hashmap_get_entry(hashmap, &key, NULL, - struct subprocess_entry, ent); + return hashmap_get_entry(hashmap, &key, ent, NULL); } int subprocess_read_status(int fd, struct strbuf *status) diff --git a/submodule-config.c b/submodule-config.c index c22855cd38..401a9b2382 100644 --- a/submodule-config.c +++ b/submodule-config.c @@ -141,9 +141,7 @@ static void cache_remove_path(struct submodule_cache *cache, struct submodule_entry *removed; hashmap_entry_init(&e.ent, hash); e.config = submodule; - removed = hashmap_remove_entry(&cache->for_path, &e, NULL, - struct submodule_entry, - ent /* member name */); + removed = hashmap_remove_entry(&cache->for_path, &e, ent, NULL); free(removed); } @@ -172,8 +170,7 @@ static const struct submodule *cache_lookup_path(struct submodule_cache *cache, hashmap_entry_init(&key.ent, hash); key.config = &key_config; - entry = hashmap_get_entry(&cache->for_path, &key, NULL, - struct submodule_entry, ent); + entry = hashmap_get_entry(&cache->for_path, &key, ent, NULL); if (entry) return entry->config; return NULL; @@ -193,8 +190,7 @@ static struct submodule *cache_lookup_name(struct submodule_cache *cache, hashmap_entry_init(&key.ent, hash); key.config = &key_config; - entry = hashmap_get_entry(&cache->for_name, &key, NULL, - struct submodule_entry, ent); + entry = hashmap_get_entry(&cache->for_name, &key, ent, NULL); if (entry) return entry->config; return NULL; diff --git a/t/helper/test-hashmap.c b/t/helper/test-hashmap.c index f89d1194ef..cc577c8956 100644 --- a/t/helper/test-hashmap.c +++ b/t/helper/test-hashmap.c @@ -189,9 +189,7 @@ int cmd__hashmap(int argc, const char **argv) entry = alloc_test_entry(hash, p1, p2); /* add / replace entry */ - entry = hashmap_put_entry(&map, entry, - struct test_entry, - ent /* member name */); + entry = hashmap_put_entry(&map, entry, ent); /* print and free replaced entry, if any */ puts(entry ? get_value(entry) : "NULL");