Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / tools / perf / util / intlist.c
1 /*
2  * Based on intlist.c by:
3  * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com>
4  *
5  * Licensed under the GPLv2.
6  */
7
8 #include <errno.h>
9 #include <stdlib.h>
10 #include <linux/compiler.h>
11
12 #include "intlist.h"
13
14 static struct rb_node *intlist__node_new(struct rblist *rblist __maybe_unused,
15                                          const void *entry)
16 {
17         int i = (int)((long)entry);
18         struct rb_node *rc = NULL;
19         struct int_node *node = malloc(sizeof(*node));
20
21         if (node != NULL) {
22                 node->i = i;
23                 node->priv = NULL;
24                 rc = &node->rb_node;
25         }
26
27         return rc;
28 }
29
30 static void int_node__delete(struct int_node *ilist)
31 {
32         free(ilist);
33 }
34
35 static void intlist__node_delete(struct rblist *rblist __maybe_unused,
36                                  struct rb_node *rb_node)
37 {
38         struct int_node *node = container_of(rb_node, struct int_node, rb_node);
39
40         int_node__delete(node);
41 }
42
43 static int intlist__node_cmp(struct rb_node *rb_node, const void *entry)
44 {
45         int i = (int)((long)entry);
46         struct int_node *node = container_of(rb_node, struct int_node, rb_node);
47
48         return node->i - i;
49 }
50
51 int intlist__add(struct intlist *ilist, int i)
52 {
53         return rblist__add_node(&ilist->rblist, (void *)((long)i));
54 }
55
56 void intlist__remove(struct intlist *ilist, struct int_node *node)
57 {
58         rblist__remove_node(&ilist->rblist, &node->rb_node);
59 }
60
61 static struct int_node *__intlist__findnew(struct intlist *ilist,
62                                            int i, bool create)
63 {
64         struct int_node *node = NULL;
65         struct rb_node *rb_node;
66
67         if (ilist == NULL)
68                 return NULL;
69
70         if (create)
71                 rb_node = rblist__findnew(&ilist->rblist, (void *)((long)i));
72         else
73                 rb_node = rblist__find(&ilist->rblist, (void *)((long)i));
74
75         if (rb_node)
76                 node = container_of(rb_node, struct int_node, rb_node);
77
78         return node;
79 }
80
81 struct int_node *intlist__find(struct intlist *ilist, int i)
82 {
83         return __intlist__findnew(ilist, i, false);
84 }
85
86 struct int_node *intlist__findnew(struct intlist *ilist, int i)
87 {
88         return __intlist__findnew(ilist, i, true);
89 }
90
91 static int intlist__parse_list(struct intlist *ilist, const char *s)
92 {
93         char *sep;
94         int err;
95
96         do {
97                 long value = strtol(s, &sep, 10);
98                 err = -EINVAL;
99                 if (*sep != ',' && *sep != '\0')
100                         break;
101                 err = intlist__add(ilist, value);
102                 if (err)
103                         break;
104                 s = sep + 1;
105         } while (*sep != '\0');
106
107         return err;
108 }
109
110 struct intlist *intlist__new(const char *slist)
111 {
112         struct intlist *ilist = malloc(sizeof(*ilist));
113
114         if (ilist != NULL) {
115                 rblist__init(&ilist->rblist);
116                 ilist->rblist.node_cmp    = intlist__node_cmp;
117                 ilist->rblist.node_new    = intlist__node_new;
118                 ilist->rblist.node_delete = intlist__node_delete;
119
120                 if (slist && intlist__parse_list(ilist, slist))
121                         goto out_delete;
122         }
123
124         return ilist;
125 out_delete:
126         intlist__delete(ilist);
127         return NULL;
128 }
129
130 void intlist__delete(struct intlist *ilist)
131 {
132         if (ilist != NULL)
133                 rblist__delete(&ilist->rblist);
134 }
135
136 struct int_node *intlist__entry(const struct intlist *ilist, unsigned int idx)
137 {
138         struct int_node *node = NULL;
139         struct rb_node *rb_node;
140
141         rb_node = rblist__entry(&ilist->rblist, idx);
142         if (rb_node)
143                 node = container_of(rb_node, struct int_node, rb_node);
144
145         return node;
146 }