C-Buffered-tree

Buffered-tree is a write-optimized data structure. It can full utilize modern large memory. This buffered-tree is used to as a dictionary type and supports Put, Delete, Get these methods.

As we know, developers love implementing dictionary type using hash. Hash can get excellent performance and simple to implement and use. But the conflict is the pain of hash implementation. Using buffered-tree, we can implement a much better space utilization.

Google implements a B-tree version in order to replace the c++ std library version We can find that B-tree can get amazing performance compared with c++ std.

I will deliver my buffered-tree version compared to Google version and other hash implementation.

More data structure supporting based on buffered-tree is on going.

Usage

see buftree_example.c

Customizer

C-Buffered-tree is aimed to provide a general dictionary structure to users. So users can easily expand more types. You can find example on the bottom of buffer_tree.c of "Map Area" section.

API

struct bftree *bftree_create(struct bftree_opts *opts);
void bftree_free(struct bftree *tree);
int bftree_put(struct bftree *tree, void *key, void *val);
void *bftree_get(struct bftree *tree, void *key);
int bftree_del(struct bftree *tree, void *key);
// Ineffective count implementation!!!! Don't call it if big tree
int bftree_count(struct bftree *tree);

// Iterator is in ordering!
struct bftree_iterator *bftree_get_iterator(struct bftree *tree);
struct payload *bftree_next(struct bftree_iterator *iter);
void bftree_free_iterator(struct bftree_iterator *iter);

License

yuyuyu101/C-Buffered-tree

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