int pred_id; // predecessor id
char* pred_mailbox; // predecessor's mailbox name
int next_finger_to_fix; // index of the next finger to fix in fix_fingers()
- xbt_dynar_t comms; // current communications pending
+ msg_comm_t comm_receive; // current communication to receive
+ xbt_dynar_t comms; // current communications being sent
} s_node_t, *node_t;
/**
// process functions
static int node(int argc, char *argv[]);
+static void handle_task(node_t node, m_task_t task);
// Chord core
static void create(node_t node);
static void check_predecessor(node_t node);
static void quit_notify(node_t node, int to);
-// not implemented yet
-//static void remote_move_keys(node_t node, int take_from_id);
-
-// deprecated
-/*
-static void bootstrap(node_t node, int known_id);
-static int find_predecessor(node_t node, int id);
-static int remote_find_predecessor(node_t node, int ask_to_id, int id);
-static int remote_closest_preceding_finger(int ask_to_id, int id);
-static void notify_predecessors(node_t node);
-static void initialize_finger_table(node_t data, int known_id);
-static void update_finger_table(node_t node, int candidate_id, int finger_index);
-static void remote_update_finger_table(node_t node, int ask_to_id, int candidate_id, int finger_index);
-static void notify_node_joined(node_t node, int new_node_id);
-static void remote_notify_node_joined(node_t node, int notify_id);
-*/
-
static void chord_initialize(void)
{
// compute the powers of 2 once for all
double init_time = MSG_get_clock();
m_task_t task = NULL;
msg_comm_t comm_send = NULL;
- msg_comm_t comm_receive = NULL;
int i;
- char* mailbox = NULL;
double deadline;
double next_stabilize_date = init_time + 10;
double next_fix_fingers_date = init_time + 10;
while ((index = MSG_comm_testany(node.comms)) != -1) {
comm_send = xbt_dynar_get_as(node.comms, index, msg_comm_t);
xbt_dynar_remove_at(node.comms, index, &comm_send);
+ DEBUG3("Communication %p is finished with status %d, dynar size is now %lu",
+ comm_send, MSG_comm_get_status(comm_send), xbt_dynar_length(node.comms));
MSG_comm_destroy(comm_send);
}
- if (comm_receive == NULL) {
+ if (node.comm_receive == NULL) {
task = NULL;
- comm_receive = MSG_task_irecv(&task, node.mailbox);
+ node.comm_receive = MSG_task_irecv(&task, node.mailbox);
+ // FIXME: do not make MSG_task_irecv() calls from several functions
}
- if (!MSG_comm_test(comm_receive)) {
+ if (!MSG_comm_test(node.comm_receive)) {
// no task was received: make some periodic calls
if (MSG_get_clock() >= next_stabilize_date) {
}
else {
// nothing to do: sleep for a while
- MSG_process_sleep(5);
+ MSG_process_sleep(1);
}
}
else {
// a transfer has occured
- MSG_error_t status = MSG_comm_get_status(comm_receive);
- MSG_comm_destroy(comm_receive);
- comm_receive = NULL;
+ MSG_error_t status = MSG_comm_get_status(node.comm_receive);
+ MSG_comm_destroy(node.comm_receive);
+ node.comm_receive = NULL;
if (status != MSG_OK) {
INFO0("Failed to receive a task. Nevermind.");
}
else {
// the task was successfully received
- const char* task_name = MSG_task_get_name(task);
- task_data_t task_data = (task_data_t) MSG_task_get_data(task);
-
- if (!strcmp(task_name, "Find Successor")) {
- INFO2("Receiving a 'Find Successor' request from %s for id %d",
- task_data->issuer_host_name, task_data->request_id);
- // is my successor the successor?
- if (is_in_interval(task_data->request_id, node.id + 1, node.fingers[0].id)) {
- task_data->answer_id = node.fingers[0].id;
- MSG_task_set_name(task, "Find Successor Answer");
- INFO3("Sending back a 'Find Successor Answer' to %s: the successor of %d is %d",
- task_data->issuer_host_name, task_data->request_id, task_data->answer_id);
- comm_send = MSG_task_isend(task, task_data->answer_to);
- xbt_dynar_push(node.comms, &comm_send);
- }
- else {
- // otherwise, forward the request to the closest preceding finger in my table
- int closest = closest_preceding_node(&node, task_data->request_id);
- INFO2("Forwarding the 'Find Successor' request for id %d to my closest preceding finger %d",
- task_data->request_id, closest);
- mailbox = get_mailbox(closest);
- comm_send = MSG_task_isend(task, mailbox);
- xbt_dynar_push(node.comms, &comm_send);
- xbt_free(mailbox);
- }
- }
-
- else if (!strcmp(task_name, "Get Predecessor")) {
- INFO1("Receiving a 'Get Predecessor' request from %s", task_data->issuer_host_name);
- task_data->answer_id = node.pred_id;
- MSG_task_set_name(task, "Get Predecessor Answer");
- INFO2("Sending back a 'Get Predecessor Answer' to %s: my predecessor is %d",
- task_data->issuer_host_name, task_data->answer_id);
- comm_send = MSG_task_isend(task, task_data->answer_to);
- xbt_dynar_push(node.comms, &comm_send);
- }
- /*
- else if (!strcmp(task_name, "Find Predecessor")) {
- INFO2("Receiving a 'Find Predecessor' Request from %s for id %d", task_data->issuer_host_name, task_data->request_id);
- // am I the predecessor?
- if (is_in_interval(task_data->request_id, node.id + 1, node.fingers[0].id)) {
- task_data->answer_id = node.id;
- MSG_task_set_name(task, "Find Predecessor Answer");
- INFO3("Sending back a 'Find Predecessor' Answer to %s: the predecessor of %d is %d", task_data->issuer_host_name, task_data->request_id, task_data->answer_id);
- comm = MSG_task_isend(task, task_data->answer_to);
- xbt_dynar_push(node.comms, &comm);
- }
- else {
- // otherwise, forward the request to the closest preceding finger in my table
- int closest = closest_preceding_node(&node, task_data->request_id);
- INFO2("Forwarding 'Find Predecessor' request for id %d to my closest preceding finger %d", task_data->request_id, closest);
- mailbox = get_mailbox(closest);
- comm = MSG_task_isend(task, mailbox);
- xbt_dynar_push(node.comms, &comm);
- xbt_free(mailbox);
- }
- }
- */
-
- /*
- else if (!strcmp(task_name, "Notify Node Joined")) {
- // someone may be my new neighboor
- INFO1("Receiving a 'Notify Node Joine' request from %s", task_data->issuer_host_name);
- notify_node_joined(&node, task_data->request_id);
- }
- else if (!strcmp(task_name, "Update Finger")) {
- // someone is telling me that he may be my new finger
- INFO1("Receiving an 'Update Finger' request from %s", task_data->issuer_host_name);
- update_finger_table(&node, task_data->request_id, task_data->request_finger);
- }
- */
- else if (!strcmp(task_name, "Notify")) {
- // someone is telling me that he may be my new predecessor
- INFO1("Receiving a 'Notify' request from %s", task_data->issuer_host_name);
- notify(&node, task_data->request_id);
- }
- else if (!strcmp(task_name, "Predecessor Leaving")) {
- // my predecessor is about to quit
- INFO1("Receiving a 'Predecessor Leaving' message from %s", task_data->issuer_host_name);
- // modify my predecessor
- set_predecessor(&node, task_data->pred_id);
- /*TODO :
- >> notify my new predecessor
- >> send a notify_predecessors !!
- */
- }
- else if (!strcmp(task_name, "Successor Leaving")) {
- // my successor is about to quit
- INFO1("Receiving a 'Successor Leaving' message from %s", task_data->issuer_host_name);
- // modify my successor FIXME : this should be implicit ?
- set_finger(&node, 0, task_data->successor_id);
- /* TODO
- >> notify my new successor
- >> update my table & predecessors table */
- }
+ handle_task(&node, task);
}
}
}
return 0;
}
+/**
+ * \brief This function is called when the current node receives a task.
+ * \param node the current node
+ * \param task the task to handle
+ */
+static void handle_task(node_t node, m_task_t task) {
+
+ msg_comm_t comm = NULL;
+ char* mailbox = NULL;
+ const char* task_name = MSG_task_get_name(task);
+ task_data_t task_data = (task_data_t) MSG_task_get_data(task);
+
+ if (!strcmp(task_name, "Find Successor")) {
+ INFO2("Receiving a 'Find Successor' request from %s for id %d",
+ task_data->issuer_host_name, task_data->request_id);
+ // is my successor the successor?
+ if (is_in_interval(task_data->request_id, node->id + 1, node->fingers[0].id)) {
+ task_data->answer_id = node->fingers[0].id;
+ MSG_task_set_name(task, "Find Successor Answer");
+ comm = MSG_task_isend(task, task_data->answer_to);
+ xbt_dynar_push(node->comms, &comm);
+ INFO3("Sending back a 'Find Successor Answer' to %s: the successor of %d is %d",
+ task_data->issuer_host_name,
+ task_data->request_id, task_data->answer_id);
+ }
+ else {
+ // otherwise, forward the request to the closest preceding finger in my table
+ int closest = closest_preceding_node(node, task_data->request_id);
+ INFO2("Forwarding the 'Find Successor' request for id %d to my closest preceding finger %d",
+ task_data->request_id, closest);
+ mailbox = get_mailbox(closest);
+ comm = MSG_task_isend(task, mailbox);
+ xbt_dynar_push(node->comms, &comm);
+ xbt_free(mailbox);
+ }
+ }
+
+ else if (!strcmp(task_name, "Get Predecessor")) {
+ INFO1("Receiving a 'Get Predecessor' request from %s", task_data->issuer_host_name);
+ task_data->answer_id = node->pred_id;
+ MSG_task_set_name(task, "Get Predecessor Answer");
+ comm = MSG_task_isend(task, task_data->answer_to);
+ xbt_dynar_push(node->comms, &comm);
+ INFO3("Sending back a 'Get Predecessor Answer' to %s via mailbox '%s': my predecessor is %d",
+ task_data->issuer_host_name,
+ task_data->answer_to, task_data->answer_id);
+ }
+
+ else if (!strcmp(task_name, "Notify")) {
+ // someone is telling me that he may be my new predecessor
+ INFO1("Receiving a 'Notify' request from %s", task_data->issuer_host_name);
+ notify(node, task_data->request_id);
+ }
+
+ else if (!strcmp(task_name, "Predecessor Leaving")) {
+ // my predecessor is about to quit
+ INFO1("Receiving a 'Predecessor Leaving' message from %s", task_data->issuer_host_name);
+ // modify my predecessor
+ set_predecessor(node, task_data->pred_id);
+ /*TODO :
+ >> notify my new predecessor
+ >> send a notify_predecessors !!
+ */
+ }
+
+ else if (!strcmp(task_name, "Successor Leaving")) {
+ // my successor is about to quit
+ INFO1("Receiving a 'Successor Leaving' message from %s", task_data->issuer_host_name);
+ // modify my successor FIXME : this should be implicit ?
+ set_finger(node, 0, task_data->successor_id);
+ /* TODO
+ >> notify my new successor
+ >> update my table & predecessors table */
+ }
+}
+
/**
* \brief Initializes the current node as the first one of the system.
* \param node the current node
print_finger_table(node);
}
-/**
- * \brief Notifies the current node that a node has just joined the network.
- * \param node the current node
- * \param new_node_id id of the new node in the network
- */
-/*
-static void notify_node_joined(node_t node, int new_node_id)
-{
- INFO1("A new node %d has joined the network, let's see if it is a neighboor", new_node_id);
- if (is_in_interval(new_node_id, node->id + 1, node->fingers[0].id - 1)) {
- // new_node_id is my new successor
- set_finger(node, 0, new_node_id);
- bootstrap(node, new_node_id);
- }
-
- if (is_in_interval(new_node_id, node->pred_id + 1, node->id - 1)) {
- // new_node_id is my new predecessor
- set_predecessor(node, new_node_id);
- bootstrap(node, new_node_id);
- }
-}
-*/
-
-/**
- * \brief Notifies a remote node that the current node has just joined
- * the network.
- * \param node the current node
- * \param notify_id id of the remote node to notify
- */
-/*
-static void remote_notify_node_joined(node_t node, int notify_id)
-{
- task_data_t req_data = xbt_new0(s_task_data_t, 1);
- req_data->request_id = node->id;
- req_data->issuer_host_name = MSG_host_get_name(MSG_host_self());
-
- // send a "Notify" request to notify_id
- INFO2("Sending a 'Notify' request to %d because I have joined the network with id %d", notify_id, node->id);
- m_task_t task = MSG_task_create("Notify", COMP_SIZE, COMM_SIZE, req_data);
- char* mailbox = get_mailbox(notify_id);
- msg_comm_t comm = MSG_task_isend(task, mailbox);
- xbt_dynar_push(node->comms, &comm);
- xbt_free(mailbox);
-}
-*/
-
-/**
-* \brief Let the current node send queries to fill in its own finger table.
-* \param node the current node
-* \param ask_to_id id of a node to send queries to
-*/
-/*
-static void bootstrap(node_t node, int ask_to_id)
-{
- INFO0("Filling my finger table");
- int i, pred_id, succ_id;
- int pow = 1;
-
- for (i = 0; i < NB_BITS; i++)
- {
- pred_id = remote_find_successor(node, ask_to_id, pow);
- do {
- succ_id = pred_id;
- pred_id = remote_find_predecessor(node, pred_id, pred_id);
- } while (pred_id >= pow);
-
- pow = pow << 1;
- set_finger(node, i, succ_id);
- }
-}
-*/
-
/**
* \brief Makes the current node quit the system
* \param node the current node
xbt_dynar_push(node->comms, &comm);
}
-/*
- * \brief Initializes my finger table, knowing the id of a node already in the system.
- * \param node the current node
- * \param known_id id of a node already in the system
- */
-/*
-static void initialize_finger_table(node_t node, int known_id)
-{
- int my_id = node->id;
- int i;
- int pow = 1; // 2^i
-
- INFO0("Initializing my finger table...");
-
- // ask known_id who is my immediate successor
- node->fingers[0].id = remote_find_successor(node, known_id, my_id + 1);
- node->fingers[0].mailbox = get_mailbox(node->fingers[0].id);
-
- // find all other fingers
- for (i = 0; i < NB_BITS - 1; i++) {
-
- pow = pow << 1; // equivalent to pow = pow * 2
- if (is_in_interval(my_id + pow, my_id, node->fingers[i].id - 1)) {
- // I already have the info for this finger
- node->fingers[i + 1].id = node->fingers[i].id;
- }
- else {
- // I don't have the info, ask the only guy I know
- node->fingers[i + 1].id = remote_find_successor(node, known_id, my_id + pow);
- }
- node->fingers[i + 1].mailbox = get_mailbox(node->fingers[i + 1].id);
- }
-
- node->pred_id = find_predecessor(node, node->id);
- node->pred_mailbox = get_mailbox(node->pred_id);
-
- INFO0("Finger table initialized!");
- print_finger_table(node);
-}
-*/
-
-/**
- * \brief Notifies some nodes that the current node may have became their finger.
- * \param node the current node, which has just joined the system
- */
-/*
-static void notify_predecessors(node_t node)
-{
- int i, pred_id;
- int pow = 1;
- for (i = 0; i < NB_BITS; i++) {
- // find the closest node whose finger #i can be me
- pred_id = find_predecessor(node, node->id - pow + 1); // note: no "+1" in the article!
- if (pred_id != node->id) {
- remote_update_finger_table(node, pred_id, node->id, i);
- }
- pow = pow << 1; // pow = pow * 2
- }
-}
-*/
-
-/**
- * \brief Tells the current node that a node may have became its new finger.
- * \param node the current node
- * \param candidate_id id of the node that may be a new finger of the current node
- * \param finger_index index of the finger to update
- */
-/*
-static void update_finger_table(node_t node, int candidate_id, int finger_index)
-{
- int pow = 1;
- int i;
- for (i = 0; i < finger_index; i++) {
- pow = pow << 1;
- }
-
- // if (is_in_interval(candidate_id, node->id + pow, node->fingers[finger_index].id - 1)) {
- if (is_in_interval(candidate_id, node->id, node->fingers[finger_index].id - 1)) {
-// INFO3("Candidate %d is between %d and %d!", candidate_id, node->id + pow, node->fingers[finger_index].id - 1);
- // candidate_id is my new finger
- set_finger(node, finger_index, candidate_id);
- print_finger_table(node);
-
- if (node->pred_id != node->id) { // FIXME: is this necessary?
- // my predecessor may be concerned too
- remote_update_finger_table(node, node->pred_id, candidate_id, finger_index);
- }
- }
-}
-*/
-
-/**
- * \brief Tells a remote node that a node may have became its new finger.
- * \param ask_to_id id of the remote node to update
- * \param candidate_id id of the node that may be a new finger of the remote node
- * \param finger_index index of the finger to update
- */
-/*
-static void remote_update_finger_table(node_t node, int ask_to_id, int candidate_id, int finger_index)
-{
- task_data_t req_data = xbt_new0(s_task_data_t, 1);
- req_data->request_id = candidate_id;
- req_data->request_finger = finger_index;
- req_data->issuer_host_name = MSG_host_get_name(MSG_host_self());
-
- // send a "Update Finger" request to ask_to_id
- INFO3("Sending an 'Update Finger' request to %d: his finger #%d may be %d now", ask_to_id, finger_index, candidate_id);
- m_task_t task = MSG_task_create("Update Finger", COMP_SIZE, COMM_SIZE, req_data);
- char* mailbox = get_mailbox(ask_to_id);
- msg_comm_t comm = MSG_task_isend(task, mailbox);
- xbt_dynar_push(node->comms, &comm);
- xbt_free(mailbox);
-}
-*/
-
/**
* \brief Makes the current node find the successor node of an id.
* \param node the current node
static int remote_find_successor(node_t node, int ask_to, int id)
{
int successor = -1;
- s_task_data_t req_data;
- char* mailbox = bprintf("%s Find Successor", node->mailbox);
- req_data.request_id = id;
- req_data.answer_to = mailbox;
- req_data.issuer_host_name = MSG_host_get_name(MSG_host_self());
+ int received_answer = 0;
+ task_data_t req_data = xbt_new0(s_task_data_t, 1);
+ req_data->request_id = id;
+ req_data->answer_to = node->mailbox;
+ req_data->issuer_host_name = MSG_host_get_name(MSG_host_self());
// send a "Find Successor" request to ask_to_id
INFO2("Sending a 'Find Successor' request to %d for key %d", ask_to, id);
- m_task_t task = MSG_task_create("Find Successor", COMP_SIZE, COMM_SIZE, &req_data);
+ m_task_t task = MSG_task_create("Find Successor", COMP_SIZE, COMM_SIZE, req_data);
MSG_error_t res = MSG_task_send_with_timeout(task, get_mailbox(ask_to), 200);
+
if (res == MSG_OK) {
// receive the answer
- task = NULL;
- res = MSG_task_receive_with_timeout(&task, req_data.answer_to, 200);
+ INFO2("Sent a 'Find Successor' request to %d for key %d, waiting for the answer", ask_to, id);
- if (res == MSG_OK) {
+ do {
+ if (node->comm_receive == NULL) {
+ task = NULL;
+ node->comm_receive = MSG_task_irecv(&task, node->mailbox);
+ }
- task_data_t ans_data;
- ans_data = MSG_task_get_data(task);
- successor = ans_data->answer_id;
- INFO2("Received the answer to my 'Find Successor' request: the successor of key %d is %d", id, successor);
- }
- }
+ res = MSG_comm_wait(node->comm_receive, 50);
- if (res != MSG_OK) {
- INFO2("My 'Find Successor' request to node %d for key %d has failed", ask_to, id);
+ if (res != MSG_OK) {
+ INFO1("Failed to receive the answer: %d", res);
+ }
+ else {
+ task = MSG_comm_get_task(node->comm_receive);
+ INFO1("Received a task '%s'", MSG_task_get_name(task));
+
+ if (strcmp(MSG_task_get_name(task), "Find Successor Answer")) {
+ handle_task(node, task);
+ }
+ else {
+ task_data_t ans_data = MSG_task_get_data(task);
+ successor = ans_data->answer_id;
+ received_answer = 1;
+ INFO2("This is the answer to my 'Find Successor' request: the successor of key %d is %d", id, successor);
+ }
+ MSG_comm_destroy(node->comm_receive);
+ node->comm_receive = NULL;
+// MSG_task_destroy(task);
+ }
+ } while (!received_answer);
}
- xbt_free(mailbox);
+
return successor;
}
static int remote_get_predecessor(node_t node, int ask_to)
{
int predecessor_id = -1;
- s_task_data_t req_data;
- char* mailbox = bprintf("%s Get Predecessor", node->mailbox);
- req_data.answer_to = mailbox;
- req_data.issuer_host_name = MSG_host_get_name(MSG_host_self());
+ int received_answer = 0;
+ task_data_t req_data = xbt_new0(s_task_data_t, 1);
+ req_data->answer_to = node->mailbox;
+ req_data->issuer_host_name = MSG_host_get_name(MSG_host_self());
// send a "Get Predecessor" request to ask_to_id
INFO1("Sending a 'Get Predecessor' request to %d", ask_to);
- m_task_t task = MSG_task_create("Get Predecessor", COMP_SIZE, COMM_SIZE, &req_data);
- MSG_error_t res = MSG_task_send_with_timeout(task, get_mailbox(ask_to), 20);
+ m_task_t task = MSG_task_create("Get Predecessor", COMP_SIZE, COMM_SIZE, req_data);
+ MSG_error_t res = MSG_task_send_with_timeout(task, get_mailbox(ask_to), 200);
if (res == MSG_OK) {
// receive the answer
- task = NULL;
- res = MSG_task_receive_with_timeout(&task, req_data.answer_to, 20);
-
- if (res == MSG_OK) {
+ INFO2("Sent 'Get Predecessor' request to %d, waiting for the answer on my mailbox '%s'", ask_to, req_data->answer_to);
- task_data_t ans_data;
- ans_data = MSG_task_get_data(task);
- predecessor_id = ans_data->answer_id;
- INFO2("Received the answer to my 'Get Predecessor' request: the predecessor of node %d is %d", ask_to, predecessor_id);
- }
- }
+ do {
+ if (node->comm_receive == NULL) { // FIXME simplify this
+ task = NULL;
+ node->comm_receive = MSG_task_irecv(&task, node->mailbox);
+ }
- if (res != MSG_OK) {
- INFO1("My 'Get Predecessor' request to node %d has failed", ask_to);
- }
+ res = MSG_comm_wait(node->comm_receive, 50);
- xbt_free(mailbox);
- return predecessor_id;
-}
-
-/**
- * \brief Makes the current node find the predecessor node of an id.
- * \param node the current node
- * \param id the id to find
- * \return the id of the predecessor node
- */
-/*
-static int find_predecessor(node_t node, int id)
-{
- if (node->id == node->fingers[0].id) {
- // I am the only node in the system
- return node->id;
- }
+ if (res != MSG_OK) {
+ INFO1("Failed to receive the answer: %d", res);
+ }
+ else {
+ task = MSG_comm_get_task(node->comm_receive);
+ INFO1("Received a task '%s'", MSG_task_get_name(task));
- if (is_in_interval(id, node->id + 1, node->fingers[0].id)) {
- return node->id;
+ if (strcmp(MSG_task_get_name(task), "Get Predecessor Answer")) {
+ handle_task(node, task);
+ }
+ else {
+ task_data_t ans_data = MSG_task_get_data(task);
+ predecessor_id = ans_data->answer_id;
+ received_answer = 1;
+ INFO2("This is the answer to my 'Get Predecessor' request: the predecessor of node %d is %d", ask_to, predecessor_id);
+ }
+ MSG_comm_destroy(node->comm_receive);
+ node->comm_receive = NULL;
+// MSG_task_destroy(task);
+ }
+ } while (!received_answer);
}
- int ask_to = closest_preceding_node(node, id);
- return remote_find_predecessor(node, ask_to, id);
-}
-*/
-/**
- * \brief Asks another node the predecessor node of an id.
- * \param node the current node
- * \param ask_to the node to ask to
- * \param id the id to find
- * \return the id of the predecessor node
- */
-/*
-static int remote_find_predecessor(node_t node, int ask_to, int id)
-{
- s_task_data_t req_data;
- char* mailbox = bprintf("%s Find Predecessor", node->mailbox);
- req_data.request_id = id;
- req_data.answer_to = mailbox;
- req_data.issuer_host_name = MSG_host_get_name(MSG_host_self());
-
- // send a "Find Predecessor" request to ask_to
- INFO2("Sending a 'Find Predecessor' request to %d for key %d", ask_to, id);
- m_task_t task = MSG_task_create("Find Predecessor", COMP_SIZE, COMM_SIZE, &req_data);
- MSG_task_send(task, get_mailbox(ask_to));
-
- // receive the answer
- task = NULL;
- MSG_task_receive(&task, req_data.answer_to);
- task_data_t ans_data;
- ans_data = MSG_task_get_data(task);
- int predecessor = ans_data->answer_id;
- xbt_free(mailbox);
- INFO2("Received the answer to my 'Find Predecessor' request: the predecessor of key %d is %d", id, predecessor);
-
- return predecessor;
+ return predecessor_id;
}
-*/
/**
* \brief Returns the closest preceding finger of an id