summaryrefslogtreecommitdiff
path: root/tools/perf/util/intlist.c
blob: 9d0740024ba88550c5db5329babd7e5238abe3b2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
/*
 * Based on intlist.c by:
 * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com>
 *
 * Licensed under the GPLv2.
 */

#include <errno.h>
#include <stdlib.h>
#include <linux/compiler.h>

#include "intlist.h"

static struct rb_node *intlist__node_new(struct rblist *rblist __maybe_unused,
					 const void *entry)
{
	int i = (int)((long)entry);
	struct rb_node *rc = NULL;
	struct int_node *node = malloc(sizeof(*node));

	if (node != NULL) {
		node->i = i;
		rc = &node->rb_node;
	}

	return rc;
}

static void int_node__delete(struct int_node *ilist)
{
	free(ilist);
}

static void intlist__node_delete(struct rblist *rblist __maybe_unused,
				 struct rb_node *rb_node)
{
	struct int_node *node = container_of(rb_node, struct int_node, rb_node);

	int_node__delete(node);
}

static int intlist__node_cmp(struct rb_node *rb_node, const void *entry)
{
	int i = (int)((long)entry);
	struct int_node *node = container_of(rb_node, struct int_node, rb_node);

	return node->i - i;
}

int intlist__add(struct intlist *ilist, int i)
{
	return rblist__add_node(&ilist->rblist, (void *)((long)i));
}

void intlist__remove(struct intlist *ilist, struct int_node *node)
{
	rblist__remove_node(&ilist->rblist, &node->rb_node);
}

struct int_node *intlist__find(struct intlist *ilist, int i)
{
	struct int_node *node = NULL;
	struct rb_node *rb_node = rblist__find(&ilist->rblist, (void *)((long)i));

	if (rb_node)
		node = container_of(rb_node, struct int_node, rb_node);

	return node;
}

struct intlist *intlist__new(void)
{
	struct intlist *ilist = malloc(sizeof(*ilist));

	if (ilist != NULL) {
		rblist__init(&ilist->rblist);
		ilist->rblist.node_cmp    = intlist__node_cmp;
		ilist->rblist.node_new    = intlist__node_new;
		ilist->rblist.node_delete = intlist__node_delete;
	}

	return ilist;
}

void intlist__delete(struct intlist *ilist)
{
	if (ilist != NULL)
		rblist__delete(&ilist->rblist);
}

struct int_node *intlist__entry(const struct intlist *ilist, unsigned int idx)
{
	struct int_node *node = NULL;
	struct rb_node *rb_node;

	rb_node = rblist__entry(&ilist->rblist, idx);
	if (rb_node)
		node = container_of(rb_node, struct int_node, rb_node);

	return node;
}