+++ /dev/null
-/* Copyright (c) 2012-2019. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "routing_table.h"
-#include "node.h"
-#include "simgrid/msg.h"
-
-XBT_LOG_NEW_DEFAULT_CATEGORY(msg_kademlia_routing_table, "Messages specific for this msg example");
-
-/** @brief Initialization of a node routing table. */
-routing_table_t routing_table_init(unsigned int node_id)
-{
- routing_table_t table = xbt_new(s_routing_table_t, 1);
- table->buckets = xbt_new(s_bucket_t, identifier_size + 1);
- for (unsigned int i = 0; i < identifier_size + 1; i++) {
- table->buckets[i].nodes = xbt_dynar_new(sizeof(unsigned int), NULL);
- table->buckets[i].id = i;
- }
- table->id = node_id;
- return table;
-}
-
-/** @brief Frees the routing table */
-void routing_table_free(routing_table_t table)
-{
- unsigned int i;
- //Free the buckets.
- for (i = 0; i <= identifier_size; i++) {
- xbt_dynar_free(&table->buckets[i].nodes);
- }
- xbt_free(table->buckets);
- xbt_free(table);
-}
-
-/** Returns if the routing table contains the id. */
-unsigned int routing_table_contains(routing_table_t table, unsigned int node_id)
-{
- bucket_t bucket = routing_table_find_bucket(table, node_id);
- return bucket_contains(bucket, node_id);
-}
-
-/**@brief prints the routing table, to debug stuff. */
-void routing_table_print(routing_table_t table)
-{
- unsigned int j;
- unsigned int value;
- XBT_INFO("Routing table of %08x:", table->id);
-
- for (unsigned int i = 0; i <= identifier_size; i++) {
- if (!xbt_dynar_is_empty(table->buckets[i].nodes)) {
- XBT_INFO("Bucket number %u: ", i);
- xbt_dynar_foreach(table->buckets[i].nodes, j, value) {
- XBT_INFO("Element %u: %08x", j, value);
- }
- }
- }
-}
-
-/** @brief Finds an identifier in a bucket and returns its position or returns -1 if it doesn't exists
- * @param bucket the bucket in which we try to find our identifier
- * @param id the id
- */
-unsigned int bucket_find_id(bucket_t bucket, unsigned int id)
-{
- unsigned int i;
- unsigned int current_id;
- xbt_dynar_foreach(bucket->nodes, i, current_id){
- if (id == current_id){
- return i;
- }
- }
- return -1;
-}
-
-/** Returns if the bucket contains an identifier. */
-unsigned int bucket_contains(bucket_t bucket, unsigned int id)
-{
- return xbt_dynar_member(bucket->nodes, &id);
-}
-
-/** @brief Finds the corresponding bucket in a routing table for a given identifier
- * @param table the routing table
- * @param id the identifier
- * @return the bucket in which the the identifier would be.
- */
-bucket_t routing_table_find_bucket(routing_table_t table, unsigned int id)
-{
- unsigned int xor_number = table->id ^ id;
- unsigned int prefix = get_node_prefix(xor_number, identifier_size);
- xbt_assert(prefix <= identifier_size, "Tried to return a bucket that doesn't exist.");
- bucket_t bucket = &table->buckets[prefix];
- return bucket;
-}
