tools/perf/util/intlist.c

Source file repositories/reference/linux-study-clean/tools/perf/util/intlist.c

File Facts

System
Linux kernel
Corpus path
tools/perf/util/intlist.c
Extension
.c
Size
3144 bytes
Lines
151
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Based on intlist.c by:
 * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com>
 */

#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)
{
	unsigned long i = (unsigned long)entry;
	struct rb_node *rc = NULL;
	struct int_node *node = malloc(sizeof(*node));

	if (node != NULL) {
		node->i = i;
		node->priv = NULL;
		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)
{
	unsigned long i = (unsigned long)entry;
	struct int_node *node = container_of(rb_node, struct int_node, rb_node);

	if (node->i > i)
		return 1;
	else if (node->i < i)
		return -1;

	return 0;
}

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

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

static struct int_node *__intlist__findnew(struct intlist *ilist,
					   unsigned long i, bool create)
{
	struct int_node *node = NULL;
	struct rb_node *rb_node;

	if (ilist == NULL)
		return NULL;

	if (create)
		rb_node = rblist__findnew(&ilist->rblist, (void *)i);
	else
		rb_node = rblist__find(&ilist->rblist, (void *)i);

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

	return node;
}

struct int_node *intlist__find(struct intlist *ilist, unsigned long i)
{
	return __intlist__findnew(ilist, i, false);
}

struct int_node *intlist__findnew(struct intlist *ilist, unsigned long i)

Annotation

Implementation Notes