tools/perf/util/strlist.h

   1 #ifndef __PERF_STRLIST_H
   2 #define __PERF_STRLIST_H
   3
   4 #include <linux/rbtree.h>
   5 #include <stdbool.h>
   6
   7 #include "rblist.h"
   8
   9 struct str_node {
  10         struct rb_node rb_node;
  11         const char     *s;
  12 };
  13
  14 struct strlist {
  15         struct rblist rblist;
  16         bool           dupstr;
  17 };
  18
  19 struct strlist *strlist__new(bool dupstr, const char *slist);
  20 void strlist__delete(struct strlist *slist);
  21
  22 void strlist__remove(struct strlist *slist, struct str_node *sn);
  23 int strlist__load(struct strlist *slist, const char *filename);
  24 int strlist__add(struct strlist *slist, const char *str);
  25
  26 struct str_node *strlist__entry(const struct strlist *slist, unsigned int idx);
  27 struct str_node *strlist__find(struct strlist *slist, const char *entry);
  28
  29 static inline bool strlist__has_entry(struct strlist *slist, const char *entry)
  30 {
  31         return strlist__find(slist, entry) != NULL;
  32 }
  33
  34 static inline bool strlist__empty(const struct strlist *slist)
  35 {
  36         return rblist__empty(&slist->rblist);
  37 }
  38
  39 static inline unsigned int strlist__nr_entries(const struct strlist *slist)
  40 {
  41         return rblist__nr_entries(&slist->rblist);
  42 }
  43
  44 /* For strlist iteration */
  45 static inline struct str_node *strlist__first(struct strlist *slist)
  46 {
  47         struct rb_node *rn = rb_first(&slist->rblist.entries);
  48         return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
  49 }
  50 static inline struct str_node *strlist__next(struct str_node *sn)
  51 {
  52         struct rb_node *rn;
  53         if (!sn)
  54                 return NULL;
  55         rn = rb_next(&sn->rb_node);
  56         return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
  57 }
  58
  59 /**
  60  * strlist_for_each      - iterate over a strlist
  61  * @pos:        the &struct str_node to use as a loop cursor.
  62  * @slist:      the &struct strlist for loop.
  63  */
  64 #define strlist__for_each(pos, slist)   \
  65         for (pos = strlist__first(slist); pos; pos = strlist__next(pos))
  66
  67 /**
  68  * strlist_for_each_safe - iterate over a strlist safe against removal of
  69  *                         str_node
  70  * @pos:        the &struct str_node to use as a loop cursor.
  71  * @n:          another &struct str_node to use as temporary storage.
  72  * @slist:      the &struct strlist for loop.
  73  */
  74 #define strlist__for_each_safe(pos, n, slist)   \
  75         for (pos = strlist__first(slist), n = strlist__next(pos); pos;\
  76              pos = n, n = strlist__next(n))
  77
  78 int strlist__parse_list(struct strlist *slist, const char *s);
  79 #endif /* __PERF_STRLIST_H */