[PATCH 1/5] hashmap: add enum for hashmap free_entries option

[Heiko Voigt <hvoigt@hvoigt.net>]

This allows a reader to immediately know which options can be used and
what this parameter is about.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
---
 Documentation/technical/api-hashmap.txt | 2 +-
 diffcore-rename.c                       | 2 +-
 hashmap.c                               | 2 +-
 hashmap.h                               | 8 +++++++-
 name-hash.c                             | 4 ++--
 test-hashmap.c                          | 6 +++---
 6 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/Documentation/technical/api-hashmap.txt b/Documentation/technical/api-hashmap.txt
index b977ae8..b04bb40 100644
--- a/Documentation/technical/api-hashmap.txt
+++ b/Documentation/technical/api-hashmap.txt
@@ -187,7 +187,7 @@ void long2double_init(void)
 
 void long2double_free(void)
 {
-	hashmap_free(&map, 1);
+	hashmap_free(&map, HASHMAP_FREE_ENTRIES);
 }
 
 static struct long2double *find_entry(long key)
diff --git a/diffcore-rename.c b/diffcore-rename.c
index 749a35d..f30239a 100644
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -335,7 +335,7 @@ static int find_exact_renames(struct diff_options *options)
 		renames += find_identical_files(&file_table, i, options);
 
 	/* Free the hash data structure and entries */
-	hashmap_free(&file_table, 1);
+	hashmap_free(&file_table, HASHMAP_FREE_ENTRIES);
 
 	return renames;
 }
diff --git a/hashmap.c b/hashmap.c
index d1b8056..9a3555a 100644
--- a/hashmap.c
+++ b/hashmap.c
@@ -135,7 +135,7 @@ void hashmap_init(struct hashmap *map, hashmap_cmp_fn equals_function,
 	alloc_table(map, size);
 }
 
-void hashmap_free(struct hashmap *map, int free_entries)
+void hashmap_free(struct hashmap *map, enum hashmap_free_options free_entries)
 {
 	if (!map || !map->table)
 		return;
diff --git a/hashmap.h b/hashmap.h
index a816ad4..6c558df 100644
--- a/hashmap.h
+++ b/hashmap.h
@@ -1,6 +1,11 @@
 #ifndef HASHMAP_H
 #define HASHMAP_H
 
+enum hashmap_free_options {
+	HASHMAP_NO_FREE_ENTRIES = 0,
+	HASHMAP_FREE_ENTRIES = 1,
+};
+
 /*
  * Generic implementation of hash-based key-value mappings.
  * See Documentation/technical/api-hashmap.txt.
@@ -39,7 +44,8 @@ struct hashmap_iter {
 
 extern void hashmap_init(struct hashmap *map, hashmap_cmp_fn equals_function,
 		size_t initial_size);
-extern void hashmap_free(struct hashmap *map, int free_entries);
+extern void hashmap_free(struct hashmap *map,
+			 enum hashmap_free_options free_entries);
 
 /* hashmap_entry functions */
 
diff --git a/name-hash.c b/name-hash.c
index 97444d0..be7c4ae 100644
--- a/name-hash.c
+++ b/name-hash.c
@@ -233,6 +233,6 @@ void free_name_hash(struct index_state *istate)
 		return;
 	istate->name_hash_initialized = 0;
 
-	hashmap_free(&istate->name_hash, 0);
-	hashmap_free(&istate->dir_hash, 1);
+	hashmap_free(&istate->name_hash, HASHMAP_NO_FREE_ENTRIES);
+	hashmap_free(&istate->dir_hash, HASHMAP_FREE_ENTRIES);
 }
diff --git a/test-hashmap.c b/test-hashmap.c
index f5183fb..ac8d6a2 100644
--- a/test-hashmap.c
+++ b/test-hashmap.c
@@ -100,7 +100,7 @@ static void perf_hashmap(unsigned int method, unsigned int rounds)
 				hashmap_add(&map, entries[i]);
 			}
 
-			hashmap_free(&map, 0);
+			hashmap_free(&map, HASHMAP_NO_FREE_ENTRIES);
 		}
 	} else {
 		/* test map lookups */
@@ -121,7 +121,7 @@ static void perf_hashmap(unsigned int method, unsigned int rounds)
 			}
 		}
 
-		hashmap_free(&map, 0);
+		hashmap_free(&map, HASHMAP_NO_FREE_ENTRIES);
 	}
 }
 
@@ -250,6 +250,6 @@ int main(int argc, char *argv[])
 		}
 	}
 
-	hashmap_free(&map, 1);
+	hashmap_free(&map, HASHMAP_FREE_ENTRIES);
 	return 0;
 }
-- 
2.0.0