xref: /openbmc/linux/tools/perf/util/strlist.h (revision b6dcefde)
1 #ifndef __PERF_STRLIST_H
2 #define __PERF_STRLIST_H
3 
4 #include <linux/rbtree.h>
5 #include <stdbool.h>
6 
7 struct str_node {
8 	struct rb_node rb_node;
9 	const char     *s;
10 };
11 
12 struct strlist {
13 	struct rb_root entries;
14 	unsigned int   nr_entries;
15 	bool	       dupstr;
16 };
17 
18 struct strlist *strlist__new(bool dupstr, const char *slist);
19 void strlist__delete(struct strlist *self);
20 
21 void strlist__remove(struct strlist *self, struct str_node *sn);
22 int strlist__load(struct strlist *self, const char *filename);
23 int strlist__add(struct strlist *self, const char *str);
24 
25 struct str_node *strlist__entry(const struct strlist *self, unsigned int idx);
26 struct str_node *strlist__find(struct strlist *self, const char *entry);
27 
28 static inline bool strlist__has_entry(struct strlist *self, const char *entry)
29 {
30 	return strlist__find(self, entry) != NULL;
31 }
32 
33 static inline bool strlist__empty(const struct strlist *self)
34 {
35 	return self->nr_entries == 0;
36 }
37 
38 static inline unsigned int strlist__nr_entries(const struct strlist *self)
39 {
40 	return self->nr_entries;
41 }
42 
43 /* For strlist iteration */
44 static inline struct str_node *strlist__first(struct strlist *self)
45 {
46 	struct rb_node *rn = rb_first(&self->entries);
47 	return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
48 }
49 static inline struct str_node *strlist__next(struct str_node *sn)
50 {
51 	struct rb_node *rn;
52 	if (!sn)
53 		return NULL;
54 	rn = rb_next(&sn->rb_node);
55 	return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
56 }
57 
58 /**
59  * strlist_for_each      - iterate over a strlist
60  * @pos:	the &struct str_node to use as a loop cursor.
61  * @self:	the &struct strlist for loop.
62  */
63 #define strlist__for_each(pos, self)	\
64 	for (pos = strlist__first(self); pos; pos = strlist__next(pos))
65 
66 /**
67  * strlist_for_each_safe - iterate over a strlist safe against removal of
68  *                         str_node
69  * @pos:	the &struct str_node to use as a loop cursor.
70  * @n:		another &struct str_node to use as temporary storage.
71  * @self:	the &struct strlist for loop.
72  */
73 #define strlist__for_each_safe(pos, n, self)	\
74 	for (pos = strlist__first(self), n = strlist__next(pos); pos;\
75 	     pos = n, n = strlist__next(n))
76 
77 int strlist__parse_list(struct strlist *self, const char *s);
78 #endif /* __PERF_STRLIST_H */
79