#include "msg/msg.h"
#include "xbt/log.h"
#include "xbt/asserts.h"
- XBT_LOG_NEW_DEFAULT_CATEGORY(msg_kademlia_routing_table,
+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 routing_table_init(unsigned int node_id)
+{
unsigned int i;
- routing_table_t table = xbt_new(s_routing_table_t,1);
- table->buckets = xbt_new(s_bucket_t,identifier_size + 1);
+ routing_table_t table = xbt_new(s_routing_table_t, 1);
+ table->buckets = xbt_new(s_bucket_t, identifier_size + 1);
for (i = 0; i < identifier_size + 1; i++) {
- table->buckets[i].nodes = xbt_dynar_new(sizeof(unsigned int),NULL);
+ 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) {
+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);
+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) {
+void routing_table_print(routing_table_t table)
+{
unsigned int i, j, value;
- XBT_INFO("Routing table of %d:",table->id);
+ XBT_INFO("Routing table of %08x:", table->id);
for (i = 0; i <= identifier_size; i++) {
- if (xbt_dynar_length(table->buckets[i].nodes) > 0) {
- XBT_INFO("Bucket number %d: ",i);
- xbt_dynar_foreach (table->buckets[i].nodes,j,value) {
- XBT_INFO("Element %d: %d",j,value);
- }
+ if (!xbt_dynar_is_empty(table->buckets[i].nodes)) {
+ XBT_INFO("Bucket number %d: ", i);
+ xbt_dynar_foreach(table->buckets[i].nodes, j, value) {
+ XBT_INFO("Element %d: %08x", j, value);
+ }
}
}
}
+
/**
* 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
+ * @param id the id
*/
-unsigned int bucket_find_id(bucket_t bucket, unsigned int id) {
+unsigned int bucket_find_id(bucket_t bucket, unsigned int id)
+{
unsigned int i, length = xbt_dynar_length(bucket->nodes);
- for (i = 0; i < length; i++) { //TODO: Use foreach maybe ?
- if (id == xbt_dynar_get_as(bucket->nodes,i,unsigned int)) {
+ for (i = 0; i < length; i++) { //TODO: Use foreach maybe ?
+ if (id == xbt_dynar_get_as(bucket->nodes, i, unsigned int)) {
return i;
}
}
return -1;
}
+
/**
* Returns if the bucket contains an identifier.
*/
-unsigned int bucket_contains(bucket_t bucket, unsigned int id) {
+unsigned int bucket_contains(bucket_t bucket, unsigned int id)
+{
unsigned int length = xbt_dynar_length(bucket->nodes), i = 0;
for (i = 0; i < length; i++) {
- if (id == xbt_dynar_get_as(bucket->nodes,i,unsigned int)) {
+ if (id == xbt_dynar_get_as(bucket->nodes, i, unsigned int)) {
return 1;
}
}
return 0;
}
+
/**
* Fins the corresponding bucket in a routing table for a given identifier
* @param table the routing table
- * @param id the identifier
+ * @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) {
+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 >= 0 && prefix <= identifier_size, "Tried to return a bucket that doesn't exist.");
+ unsigned int prefix = get_node_prefix(xor_number, identifier_size);
+ xbt_assert(prefix >= 0
+ && prefix <= identifier_size,
+ "Tried to return a bucket that doesn't exist.");
bucket_t bucket = &table->buckets[prefix];
return bucket;
}
-
