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_config {
  20         bool dont_dupstr;
  21 };
  22
  23 struct strlist *strlist__new(const char *slist, const struct strlist_config *config);
  24 void strlist__delete(struct strlist *slist);
  25
  26 void strlist__remove(struct strlist *slist, struct str_node *sn);
  27 int strlist__load(struct strlist *slist, const char *filename);
  28 int strlist__add(struct strlist *slist, const char *str);
  29
  30 struct str_node *strlist__entry(const struct strlist *slist, unsigned int idx);
  31 struct str_node *strlist__find(struct strlist *slist, const char *entry);
  32
  33 static inline bool strlist__has_entry(struct strlist *slist, const char *entry)
  34 {
  35         return strlist__find(slist, entry) != NULL;
  36 }
  37
  38 static inline bool strlist__empty(const struct strlist *slist)
  39 {
  40         return rblist__empty(&slist->rblist);
  41 }
  42
  43 static inline unsigned int strlist__nr_entries(const struct strlist *slist)
  44 {
  45         return rblist__nr_entries(&slist->rblist);
  46 }
  47
  48 /* For strlist iteration */
  49 static inline struct str_node *strlist__first(struct strlist *slist)
  50 {
  51         struct rb_node *rn = rb_first(&slist->rblist.entries);
  52         return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
  53 }
  54 static inline struct str_node *strlist__next(struct str_node *sn)
  55 {
  56         struct rb_node *rn;
  57         if (!sn)
  58                 return NULL;
  59         rn = rb_next(&sn->rb_node);
  60         return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
  61 }
  62
  63 /**
  64  * strlist_for_each      - iterate over a strlist
  65  * @pos:        the &struct str_node to use as a loop cursor.
  66  * @slist:      the &struct strlist for loop.
  67  */
  68 #define strlist__for_each(pos, slist)   \
  69         for (pos = strlist__first(slist); pos; pos = strlist__next(pos))
  70
  71 /**
  72  * strlist_for_each_safe - iterate over a strlist safe against removal of
  73  *                         str_node
  74  * @pos:        the &struct str_node to use as a loop cursor.
  75  * @n:          another &struct str_node to use as temporary storage.
  76  * @slist:      the &struct strlist for loop.
  77  */
  78 #define strlist__for_each_safe(pos, n, slist)   \
  79         for (pos = strlist__first(slist), n = strlist__next(pos); pos;\
  80              pos = n, n = strlist__next(n))
  81
  82 int strlist__parse_list(struct strlist *slist, const char *s);
  83 #endif /* __PERF_STRLIST_H */