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-rw-r--r--oidset.h43
1 files changed, 32 insertions, 11 deletions
diff --git a/oidset.h b/oidset.h
index 40ec5f8..c9d0f6d 100644
--- a/oidset.h
+++ b/oidset.h
@@ -1,7 +1,8 @@
#ifndef OIDSET_H
#define OIDSET_H
-#include "oidmap.h"
+#include "hashmap.h"
+#include "khash.h"
/**
* This API is similar to sha1-array, in that it maintains a set of object ids
@@ -15,20 +16,35 @@
* table overhead.
*/
+static inline unsigned int oid_hash(struct object_id oid)
+{
+ return sha1hash(oid.hash);
+}
+
+static inline int oid_equal(struct object_id a, struct object_id b)
+{
+ return oideq(&a, &b);
+}
+
+KHASH_INIT(oid, struct object_id, int, 0, oid_hash, oid_equal)
+
/**
* A single oidset; should be zero-initialized (or use OIDSET_INIT).
*/
struct oidset {
- struct oidmap map;
+ kh_oid_t set;
};
-#define OIDSET_INIT { OIDMAP_INIT }
+#define OIDSET_INIT { { 0 } }
-static inline void oidset_init(struct oidset *set, size_t initial_size)
-{
- oidmap_init(&set->map, initial_size);
-}
+/**
+ * Initialize the oidset structure `set`.
+ *
+ * If `initial_size` is bigger than 0 then preallocate to allow inserting
+ * the specified number of elements without further allocations.
+ */
+void oidset_init(struct oidset *set, size_t initial_size);
/**
* Returns true iff `set` contains `oid`.
@@ -58,19 +74,24 @@ int oidset_remove(struct oidset *set, const struct object_id *oid);
void oidset_clear(struct oidset *set);
struct oidset_iter {
- struct oidmap_iter m_iter;
+ kh_oid_t *set;
+ khiter_t iter;
};
static inline void oidset_iter_init(struct oidset *set,
struct oidset_iter *iter)
{
- oidmap_iter_init(&set->map, &iter->m_iter);
+ iter->set = &set->set;
+ iter->iter = kh_begin(iter->set);
}
static inline struct object_id *oidset_iter_next(struct oidset_iter *iter)
{
- struct oidmap_entry *e = oidmap_iter_next(&iter->m_iter);
- return e ? &e->oid : NULL;
+ for (; iter->iter != kh_end(iter->set); iter->iter++) {
+ if (kh_exist(iter->set, iter->iter))
+ return &kh_key(iter->set, iter->iter++);
+ }
+ return NULL;
}
static inline struct object_id *oidset_iter_first(struct oidset *set,