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for_each_hash: allow passing a 'void *data' pointer to callback

For the find_exact_renames() function, this allows us to pass the
diff_options structure pointer to the low-level routines.  We will use
that to distinguish between the "rename" and "copy" cases.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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commit 11f944dd6bdabd003325c85dc60b16389d012361 1 parent 7ed863a
@torvalds torvalds authored committed
Showing with 13 additions and 11 deletions.
  1. +2 −2 builtin/describe.c
  2. +8 −6 diffcore-rename.c
  3. +2 −2 hash.c
  4. +1 −1  hash.h
View
4 builtin/describe.c
@@ -63,7 +63,7 @@ static inline struct commit_name *find_commit_name(const unsigned char *peeled)
return n;
}
-static int set_util(void *chain)
+static int set_util(void *chain, void *data)
{
struct commit_name *n;
for (n = chain; n; n = n->next) {
@@ -289,7 +289,7 @@ static void describe(const char *arg, int last_one)
fprintf(stderr, "searching to describe %s\n", arg);
if (!have_util) {
- for_each_hash(&names, set_util);
+ for_each_hash(&names, set_util, NULL);
have_util = 1;
}
View
14 diffcore-rename.c
@@ -247,7 +247,8 @@ struct file_similarity {
};
static int find_identical_files(struct file_similarity *src,
- struct file_similarity *dst)
+ struct file_similarity *dst,
+ struct diff_options *options)
{
int renames = 0;
@@ -306,11 +307,12 @@ static void free_similarity_list(struct file_similarity *p)
}
}
-static int find_same_files(void *ptr)
+static int find_same_files(void *ptr, void *data)
{
int ret;
struct file_similarity *p = ptr;
struct file_similarity *src = NULL, *dst = NULL;
+ struct diff_options *options = data;
/* Split the hash list up into sources and destinations */
do {
@@ -329,7 +331,7 @@ static int find_same_files(void *ptr)
* If we have both sources *and* destinations, see if
* we can match them up
*/
- ret = (src && dst) ? find_identical_files(src, dst) : 0;
+ ret = (src && dst) ? find_identical_files(src, dst, options) : 0;
/* Free the hashes and return the number of renames found */
free_similarity_list(src);
@@ -377,7 +379,7 @@ static void insert_file_table(struct hash_table *table, int src_dst, int index,
* and then during the second round we try to match
* cache-dirty entries as well.
*/
-static int find_exact_renames(void)
+static int find_exact_renames(struct diff_options *options)
{
int i;
struct hash_table file_table;
@@ -390,7 +392,7 @@ static int find_exact_renames(void)
insert_file_table(&file_table, 1, i, rename_dst[i].two);
/* Find the renames */
- i = for_each_hash(&file_table, find_same_files);
+ i = for_each_hash(&file_table, find_same_files, options);
/* .. and free the hash data structure */
free_hash(&file_table);
@@ -467,7 +469,7 @@ void diffcore_rename(struct diff_options *options)
* We really want to cull the candidates list early
* with cheap tests in order to avoid doing deltas.
*/
- rename_count = find_exact_renames();
+ rename_count = find_exact_renames(options);
/* Did we only want exact renames? */
if (minimum_score == MAX_SCORE)
View
4 hash.c
@@ -81,7 +81,7 @@ void **insert_hash(unsigned int hash, void *ptr, struct hash_table *table)
return insert_hash_entry(hash, ptr, table);
}
-int for_each_hash(const struct hash_table *table, int (*fn)(void *))
+int for_each_hash(const struct hash_table *table, int (*fn)(void *, void *), void *data)
{
int sum = 0;
unsigned int i;
@@ -92,7 +92,7 @@ int for_each_hash(const struct hash_table *table, int (*fn)(void *))
void *ptr = array->ptr;
array++;
if (ptr) {
- int val = fn(ptr);
+ int val = fn(ptr, data);
if (val < 0)
return val;
sum += val;
View
2  hash.h
@@ -30,7 +30,7 @@ struct hash_table {
extern void *lookup_hash(unsigned int hash, const struct hash_table *table);
extern void **insert_hash(unsigned int hash, void *ptr, struct hash_table *table);
-extern int for_each_hash(const struct hash_table *table, int (*fn)(void *));
+extern int for_each_hash(const struct hash_table *table, int (*fn)(void *, void *), void *data);
extern void free_hash(struct hash_table *table);
static inline void init_hash(struct hash_table *table)
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