LXR linux/tools/perf/util/rblist.h

   1#ifndef __PERF_RBLIST_H
   2#define __PERF_RBLIST_H
   3
   4#include <linux/rbtree.h>
   5#include <stdbool.h>
   6
   7/*
   8 * create node structs of the form:
   9 * struct my_node {
  10 *     struct rb_node rb_node;
  11 *     ... my data ...
  12 * };
  13 *
  14 * create list structs of the form:
  15 * struct mylist {
  16 *     struct rblist rblist;
  17 *     ... my data ...
  18 * };
  19 */
  20
  21struct rblist {
  22        struct rb_root entries;
  23        unsigned int   nr_entries;
  24
  25        int (*node_cmp)(struct rb_node *rbn, const void *entry);
  26        struct rb_node *(*node_new)(struct rblist *rlist, const void *new_entry);
  27        void (*node_delete)(struct rblist *rblist, struct rb_node *rb_node);
  28};
  29
  30void rblist__init(struct rblist *rblist);
  31void rblist__delete(struct rblist *rblist);
  32int rblist__add_node(struct rblist *rblist, const void *new_entry);
  33void rblist__remove_node(struct rblist *rblist, struct rb_node *rb_node);
  34struct rb_node *rblist__find(struct rblist *rblist, const void *entry);
  35struct rb_node *rblist__entry(const struct rblist *rblist, unsigned int idx);
  36
  37static inline bool rblist__empty(const struct rblist *rblist)
  38{
  39        return rblist->nr_entries == 0;
  40}
  41
  42static inline unsigned int rblist__nr_entries(const struct rblist *rblist)
  43{
  44        return rblist->nr_entries;
  45}
  46
  47#endif /* __PERF_RBLIST_H */
  48