add multihashmap_clear to API

3 files changed, 82 insertions, 22 deletions

diff --git a/src/include/gnunet_container_lib.h b/src/include/gnunet_container_lib.h
index b83130307..125bc81b2 100644
--- a/src/include/gnunet_container_lib.h
+++ b/src/include/gnunet_container_lib.h
@@ -699,6 +699,18 @@ GNUNET_CONTAINER_multihashmap_remove_all (struct GNUNET_CONTAINER_MultiHashMap *
 
 /**
  * @ingroup hashmap
+ * Remove all entries from the map.
+ * Note that the values would not be "freed".
+ *
+ * @param map the map
+ * @return number of values removed
+ */
+unsigned int
+GNUNET_CONTAINER_multihashmap_clear (struct GNUNET_CONTAINER_MultiHashMap *map);
+
+
+/**
+ * @ingroup hashmap
  * Check if the map contains any value under the given
  * key (including values that are NULL).
  *
@@ -757,8 +769,7 @@ GNUNET_CONTAINER_multihashmap_put (struct GNUNET_CONTAINER_MultiHashMap *map,
  * @return the number of key value pairs
  */
 unsigned int
-GNUNET_CONTAINER_multihashmap_size (const struct GNUNET_CONTAINER_MultiHashMap
-                                    *map);
+GNUNET_CONTAINER_multihashmap_size (const struct GNUNET_CONTAINER_MultiHashMap *map);
 
 
 /**
@@ -772,8 +783,7 @@ GNUNET_CONTAINER_multihashmap_size (const struct GNUNET_CONTAINER_MultiHashMap
  *         #GNUNET_SYSERR if it aborted iteration
  */
 int
-GNUNET_CONTAINER_multihashmap_iterate (const struct
-                                       GNUNET_CONTAINER_MultiHashMap *map,
+GNUNET_CONTAINER_multihashmap_iterate (const struct GNUNET_CONTAINER_MultiHashMap *map,
                                        GNUNET_CONTAINER_HashMapIterator it,
                                        void *it_cls);
 
diff --git a/src/include/gnunet_datastore_service.h b/src/include/gnunet_datastore_service.h
index 39605807a..38a027200 100644
--- a/src/include/gnunet_datastore_service.h
+++ b/src/include/gnunet_datastore_service.h
@@ -207,7 +207,8 @@ GNUNET_DATASTORE_release_reserve (struct GNUNET_DATASTORE_Handle *h,
  *         (or rather, will already have been invoked)
  */
 struct GNUNET_DATASTORE_QueueEntry *
-GNUNET_DATASTORE_update (struct GNUNET_DATASTORE_Handle *h, uint64_t uid,
+GNUNET_DATASTORE_update (struct GNUNET_DATASTORE_Handle *h,
+                         uint64_t uid,
                          uint32_t priority,
                          struct GNUNET_TIME_Absolute expiration,
                          unsigned int queue_priority,
@@ -239,8 +240,10 @@ GNUNET_DATASTORE_update (struct GNUNET_DATASTORE_Handle *h, uint64_t uid,
  */
 struct GNUNET_DATASTORE_QueueEntry *
 GNUNET_DATASTORE_remove (struct GNUNET_DATASTORE_Handle *h,
-                         const struct GNUNET_HashCode * key, size_t size,
-                         const void *data, unsigned int queue_priority,
+                         const struct GNUNET_HashCode *key,
+                         size_t size,
+                         const void *data,
+                         unsigned int queue_priority,
                          unsigned int max_queue_size,
                          struct GNUNET_TIME_Relative timeout,
                          GNUNET_DATASTORE_ContinuationWithStatus cont,
@@ -261,14 +264,16 @@ GNUNET_DATASTORE_remove (struct GNUNET_DATASTORE_Handle *h,
  * @param uid unique identifier for the datum;
  *        maybe 0 if no unique identifier is available
  */
-typedef void (*GNUNET_DATASTORE_DatumProcessor) (void *cls,
-                                                 const struct GNUNET_HashCode *key,
-                                                 size_t size, const void *data,
-                                                 enum GNUNET_BLOCK_Type type,
-                                                 uint32_t priority,
-                                                 uint32_t anonymity,
-                                                 struct GNUNET_TIME_Absolute expiration,
-                                                 uint64_t uid);
+typedef void
+(*GNUNET_DATASTORE_DatumProcessor) (void *cls,
+                                    const struct GNUNET_HashCode *key,
+                                    size_t size,
+                                    const void *data,
+                                    enum GNUNET_BLOCK_Type type,
+                                    uint32_t priority,
+                                    uint32_t anonymity,
+                                    struct GNUNET_TIME_Absolute expiration,
+                                    uint64_t uid);
 
 
 /**
@@ -293,13 +298,15 @@ typedef void (*GNUNET_DATASTORE_DatumProcessor) (void *cls,
  *         cancel
  */
 struct GNUNET_DATASTORE_QueueEntry *
-GNUNET_DATASTORE_get_key (struct GNUNET_DATASTORE_Handle *h, uint64_t offset,
+GNUNET_DATASTORE_get_key (struct GNUNET_DATASTORE_Handle *h,
+                          uint64_t offset,
                           const struct GNUNET_HashCode *key,
                           enum GNUNET_BLOCK_Type type,
                           unsigned int queue_priority,
                           unsigned int max_queue_size,
                           struct GNUNET_TIME_Relative timeout,
-                          GNUNET_DATASTORE_DatumProcessor proc, void *proc_cls);
+                          GNUNET_DATASTORE_DatumProcessor proc,
+                          void *proc_cls);
 
 
 /**
@@ -352,7 +359,7 @@ GNUNET_DATASTORE_get_zero_anonymity (struct GNUNET_DATASTORE_Handle *h,
  * @param proc function to call on a random value; it
  *        will be called once with a value (if available)
  *        and always once with a value of NULL.
- * @param proc_cls closure for proc
+ * @param proc_cls closure for @a proc
  * @return NULL if the entry was not queued, otherwise a handle that can be used to
  *         cancel
  */
diff --git a/src/util/container_multihashmap.c b/src/util/container_multihashmap.c
index e6c908d76..789e8f370 100644
--- a/src/util/container_multihashmap.c
+++ b/src/util/container_multihashmap.c
@@ -275,8 +275,8 @@ GNUNET_CONTAINER_multihashmap_size (const struct GNUNET_CONTAINER_MultiHashMap
  *   key-value pairs with value NULL
  */
 void *
-GNUNET_CONTAINER_multihashmap_get (const struct GNUNET_CONTAINER_MultiHashMap
-                                   *map, const struct GNUNET_HashCode *key)
+GNUNET_CONTAINER_multihashmap_get (const struct GNUNET_CONTAINER_MultiHashMap *map,
+                                   const struct GNUNET_HashCode *key)
 {
   union MapEntry me;
 
@@ -446,8 +446,8 @@ GNUNET_CONTAINER_multihashmap_remove (struct GNUNET_CONTAINER_MultiHashMap *map,
  * @return number of values removed
  */
 int
-GNUNET_CONTAINER_multihashmap_remove_all (struct GNUNET_CONTAINER_MultiHashMap
-                                          *map, const struct GNUNET_HashCode *key)
+GNUNET_CONTAINER_multihashmap_remove_all (struct GNUNET_CONTAINER_MultiHashMap *map,
+                                          const struct GNUNET_HashCode *key)
 {
   union MapEntry me;
   unsigned int i;
@@ -523,6 +523,49 @@ GNUNET_CONTAINER_multihashmap_remove_all (struct GNUNET_CONTAINER_MultiHashMap
 
 
 /**
+ * Callback used to remove all entries from the map.
+ *
+ * @param cls the `struct GNUNET_CONTAINER_MultiHashMap`
+ * @param key the key
+ * @param value the value
+ * @return #GNUNET_OK (continue to iterate)
+ */
+static int
+remove_all (void *cls,
+            const struct GNUNET_HashCode *key,
+            void *value)
+{
+  struct GNUNET_CONTAINER_MultiHashMap *map = cls;
+
+  GNUNET_CONTAINER_multihashmap_remove (map,
+                                        key,
+                                        value);
+  return GNUNET_OK;
+}
+
+
+/**
+ * @ingroup hashmap
+ * Remove all entries from the map.
+ * Note that the values would not be "freed".
+ *
+ * @param map the map
+ * @return number of values removed
+ */
+unsigned int
+GNUNET_CONTAINER_multihashmap_clear (struct GNUNET_CONTAINER_MultiHashMap *map)
+{
+  unsigned int ret;
+
+  ret = map->size;
+  GNUNET_CONTAINER_multihashmap_iterate (map,
+                                         &remove_all,
+                                         map);
+  return ret;
+}
+
+
+/**
  * Check if the map contains any value under the given
  * key (including values that are NULL).
  *