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Linux/tools/perf/util/intlist.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef __PERF_INTLIST_H
  3 #define __PERF_INTLIST_H
  4 
  5 #include <linux/rbtree.h>
  6 #include <stdbool.h>
  7 
  8 #include "rblist.h"
  9 
 10 struct int_node {
 11         struct rb_node rb_node;
 12         int i;
 13         void *priv;
 14 };
 15 
 16 struct intlist {
 17         struct rblist rblist;
 18 };
 19 
 20 struct intlist *intlist__new(const char *slist);
 21 void intlist__delete(struct intlist *ilist);
 22 
 23 void intlist__remove(struct intlist *ilist, struct int_node *in);
 24 int intlist__add(struct intlist *ilist, int i);
 25 
 26 struct int_node *intlist__entry(const struct intlist *ilist, unsigned int idx);
 27 struct int_node *intlist__find(struct intlist *ilist, int i);
 28 struct int_node *intlist__findnew(struct intlist *ilist, int i);
 29 
 30 static inline bool intlist__has_entry(struct intlist *ilist, int i)
 31 {
 32         return intlist__find(ilist, i) != NULL;
 33 }
 34 
 35 static inline bool intlist__empty(const struct intlist *ilist)
 36 {
 37         return rblist__empty(&ilist->rblist);
 38 }
 39 
 40 static inline unsigned int intlist__nr_entries(const struct intlist *ilist)
 41 {
 42         return rblist__nr_entries(&ilist->rblist);
 43 }
 44 
 45 /* For intlist iteration */
 46 static inline struct int_node *intlist__first(struct intlist *ilist)
 47 {
 48         struct rb_node *rn = rb_first_cached(&ilist->rblist.entries);
 49         return rn ? rb_entry(rn, struct int_node, rb_node) : NULL;
 50 }
 51 static inline struct int_node *intlist__next(struct int_node *in)
 52 {
 53         struct rb_node *rn;
 54         if (!in)
 55                 return NULL;
 56         rn = rb_next(&in->rb_node);
 57         return rn ? rb_entry(rn, struct int_node, rb_node) : NULL;
 58 }
 59 
 60 /**
 61  * intlist__for_each_entry      - iterate over a intlist
 62  * @pos:        the &struct int_node to use as a loop cursor.
 63  * @ilist:      the &struct intlist for loop.
 64  */
 65 #define intlist__for_each_entry(pos, ilist)     \
 66         for (pos = intlist__first(ilist); pos; pos = intlist__next(pos))
 67 
 68 /**
 69  * intlist__for_each_entry_safe - iterate over a intlist safe against removal of
 70  *                         int_node
 71  * @pos:        the &struct int_node to use as a loop cursor.
 72  * @n:          another &struct int_node to use as temporary storage.
 73  * @ilist:      the &struct intlist for loop.
 74  */
 75 #define intlist__for_each_entry_safe(pos, n, ilist)     \
 76         for (pos = intlist__first(ilist), n = intlist__next(pos); pos;\
 77              pos = n, n = intlist__next(n))
 78 #endif /* __PERF_INTLIST_H */
 79 

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