创建

client/nirvana_conhash.h

@@ -0,0 +1,50 @@
+#ifndef __NVN_CONSISTENT_HASH_H__
+#define __NVN_CONSISTENT_HASH_H__
+
+#include <stdint.h>
+
+#ifndef CONHASH_MAX_POINTS_PER_BUCKET
+#define CONHASH_MAX_POINTS_PER_BUCKET 128
+#endif
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+enum CONHASH_ERRCODE
+{
+	CONHASH_OK = 0,
+	CONHASH_ERR_INVALID_ARGS = -1,
+	CONHASH_BUCKET_NOT_FOUND = -2,
+	CONHASH_BUCKET_ALREADY_EXIST=-3,
+	CONHASH_NO_VALID_BUCKETS=-4,
+};
+
+struct conhash_bucket
+{
+	uint32_t bucket_id;
+	uint32_t point_num;    /*should be not more than CONHASH_MAX_POINTS_PER_BUCKET*/
+	void* tag;
+};
+struct consistent_hash;
+
+/*API<50>̲߳<DFB3><CCB2><EFBFBD>ȫ*/
+struct consistent_hash *conhash_instance_new(const struct conhash_bucket *buckets, uint32_t bucket_num);
+void conhash_instance_free(struct consistent_hash *ch);
+struct consistent_hash *conhash_instance_copy(struct consistent_hash *ch);
+
+enum CONHASH_ERRCODE conhash_insert_bucket(struct consistent_hash *ch,const struct conhash_bucket* bucket);
+enum CONHASH_ERRCODE conhash_remove_bucket(struct consistent_hash *ch, u_int32_t bucket_id, void (*free_cb)(void *tag, u_int32_t point_num));
+enum CONHASH_ERRCODE conhash_renew_bucket(struct consistent_hash *ch, struct conhash_bucket* bucket); /*<2A><><EFBFBD><EFBFBD>point_num<75><6D>tag*/
+enum CONHASH_ERRCODE conhash_lookup_bucket(struct consistent_hash *ch, const void* key, int len, struct conhash_bucket *result/*OUT*/);
+enum CONHASH_ERRCODE conhash_lookup_bucket_int(struct consistent_hash *ch, u_int64_t randint, struct conhash_bucket* result);
+
+double conhash_calulate_CVRSMD(struct consistent_hash *p);
+u_int32_t conhash_get_bucket_num(struct consistent_hash *ch);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif