text: /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
  /* Copyright (c) 2018 Mellanox Technologies. All rights reserved */
  
  #ifndef _OBJAGG_H
  #define _OBJAGG_H
  
  struct objagg_ops {
  	size_t obj_size;
  	bool (*delta_check)(void *priv, const void *parent_obj,
  			    const void *obj);
  	int (*hints_obj_cmp)(const void *obj1, const void *obj2);
  	void * (*delta_create)(void *priv, void *parent_obj, void *obj);
  	void (*delta_destroy)(void *priv, void *delta_priv);
  	void * (*root_create)(void *priv, void *obj, unsigned int root_id);
  #define OBJAGG_OBJ_ROOT_ID_INVALID UINT_MAX
  	void (*root_destroy)(void *priv, void *root_priv);
  };
  
  struct objagg;
  struct objagg_obj;
  struct objagg_hints;
  
  const void *objagg_obj_root_priv(const struct objagg_obj *objagg_obj);
  const void *objagg_obj_delta_priv(const struct objagg_obj *objagg_obj);
  const void *objagg_obj_raw(const struct objagg_obj *objagg_obj);
  
  struct objagg_obj *objagg_obj_get(struct objagg *objagg, void *obj);
  void objagg_obj_put(struct objagg *objagg, struct objagg_obj *objagg_obj);
  struct objagg *objagg_create(const struct objagg_ops *ops,
  			     struct objagg_hints *hints, void *priv);
  void objagg_destroy(struct objagg *objagg);
  
  struct objagg_obj_stats {
  	unsigned int user_count;
  	unsigned int delta_user_count; /* includes delta object users */
  };
  
  struct objagg_obj_stats_info {
  	struct objagg_obj_stats stats;
  	struct objagg_obj *objagg_obj; /* associated object */
  	bool is_root;
  };
  
  struct objagg_stats {
  	unsigned int root_count;
  	unsigned int stats_info_count;
  	struct objagg_obj_stats_info stats_info[];
  };
  
  const struct objagg_stats *objagg_stats_get(struct objagg *objagg);
  void objagg_stats_put(const struct objagg_stats *objagg_stats);
  
  enum objagg_opt_algo_type {
  	OBJAGG_OPT_ALGO_SIMPLE_GREEDY,
  };
  
  struct objagg_hints *objagg_hints_get(struct objagg *objagg,
  				      enum objagg_opt_algo_type opt_algo_type);
  void objagg_hints_put(struct objagg_hints *objagg_hints);
  const struct objagg_stats *
  objagg_hints_stats_get(struct objagg_hints *objagg_hints);
  
  #endif
  