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