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include/linux/btree-128.h 2.63 KB
5db53f3e8   Joern Engel   [LogFS] add new f...
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  extern struct btree_geo btree_geo128;
  
  struct btree_head128 { struct btree_head h; };
  
  static inline void btree_init_mempool128(struct btree_head128 *head,
  					 mempool_t *mempool)
  {
  	btree_init_mempool(&head->h, mempool);
  }
  
  static inline int btree_init128(struct btree_head128 *head)
  {
  	return btree_init(&head->h);
  }
  
  static inline void btree_destroy128(struct btree_head128 *head)
  {
  	btree_destroy(&head->h);
  }
  
  static inline void *btree_lookup128(struct btree_head128 *head, u64 k1, u64 k2)
  {
  	u64 key[2] = {k1, k2};
  	return btree_lookup(&head->h, &btree_geo128, (unsigned long *)&key);
  }
  
  static inline void *btree_get_prev128(struct btree_head128 *head,
  				      u64 *k1, u64 *k2)
  {
  	u64 key[2] = {*k1, *k2};
  	void *val;
  
  	val = btree_get_prev(&head->h, &btree_geo128,
  			     (unsigned long *)&key);
  	*k1 = key[0];
  	*k2 = key[1];
  	return val;
  }
  
  static inline int btree_insert128(struct btree_head128 *head, u64 k1, u64 k2,
  				  void *val, gfp_t gfp)
  {
  	u64 key[2] = {k1, k2};
  	return btree_insert(&head->h, &btree_geo128,
  			    (unsigned long *)&key, val, gfp);
  }
  
  static inline int btree_update128(struct btree_head128 *head, u64 k1, u64 k2,
  				  void *val)
  {
  	u64 key[2] = {k1, k2};
  	return btree_update(&head->h, &btree_geo128,
  			    (unsigned long *)&key, val);
  }
  
  static inline void *btree_remove128(struct btree_head128 *head, u64 k1, u64 k2)
  {
  	u64 key[2] = {k1, k2};
  	return btree_remove(&head->h, &btree_geo128, (unsigned long *)&key);
  }
  
  static inline void *btree_last128(struct btree_head128 *head, u64 *k1, u64 *k2)
  {
  	u64 key[2];
  	void *val;
  
  	val = btree_last(&head->h, &btree_geo128, (unsigned long *)&key[0]);
  	if (val) {
  		*k1 = key[0];
  		*k2 = key[1];
  	}
  
  	return val;
  }
  
  static inline int btree_merge128(struct btree_head128 *target,
  				 struct btree_head128 *victim,
  				 gfp_t gfp)
  {
  	return btree_merge(&target->h, &victim->h, &btree_geo128, gfp);
  }
  
  void visitor128(void *elem, unsigned long opaque, unsigned long *__key,
  		size_t index, void *__func);
  
  typedef void (*visitor128_t)(void *elem, unsigned long opaque,
  			     u64 key1, u64 key2, size_t index);
  
  static inline size_t btree_visitor128(struct btree_head128 *head,
  				      unsigned long opaque,
  				      visitor128_t func2)
  {
  	return btree_visitor(&head->h, &btree_geo128, opaque,
  			     visitor128, func2);
  }
  
  static inline size_t btree_grim_visitor128(struct btree_head128 *head,
  					   unsigned long opaque,
  					   visitor128_t func2)
  {
  	return btree_grim_visitor(&head->h, &btree_geo128, opaque,
  				  visitor128, func2);
  }
  
  #define btree_for_each_safe128(head, k1, k2, val)	\
  	for (val = btree_last128(head, &k1, &k2);	\
  	     val;					\
  	     val = btree_get_prev128(head, &k1, &k2))