-/* Copyright (c) 2010-2017. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2010-2019. 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. */
* 24 belongs to [21, 29]
* 24 does not belong to [29, 21]
*
- * \param id id to check
- * \param start lower bound
- * \param end upper bound
- * \return a non-zero value if id in in [start, end]
+ * @param id id to check
+ * @param start lower bound
+ * @param end upper bound
+ * @return a non-zero value if id in in [start, end]
*/
static int is_in_interval(int id, int start, int end)
{
// initialize my node
id_ = std::stoi(args[1]);
- stream = simgrid::s4u::this_actor::getHost()->extension<HostChord>()->getStream();
- mailbox_ = simgrid::s4u::Mailbox::byName(std::to_string(id_));
+ mailbox_ = simgrid::s4u::Mailbox::by_name(std::to_string(id_));
next_finger_to_fix = 0;
- fingers_ = new int[nb_bits];
-
- for (int i = 0; i < nb_bits; i++) {
- fingers_[i] = id_;
- }
+ fingers_.resize(nb_bits, id_);
if (args.size() == 3) { // first ring
deadline_ = std::stod(args[2]);
- start_time_ = simgrid::s4u::Engine::getClock();
+ start_time_ = simgrid::s4u::Engine::get_clock();
XBT_DEBUG("Create a new Chord ring...");
} else {
known_id_ = std::stoi(args[2]);
}
}
-Node::~Node()
-{
- delete[] fingers_;
-}
/* Makes the current node join the ring, knowing the id of a node already in the ring
*
- * \param known_id id of a node already in the ring
- * \return true if the join operation succeeded
+ * @param known_id id of a node already in the ring
+ * @return true if the join operation succeeded
* */
void Node::join(int known_id)
XBT_DEBUG("Sending a 'PREDECESSOR_LEAVING' to my successor %d", fingers_[0]);
try {
- simgrid::s4u::Mailbox::byName(std::to_string(fingers_[0]))->put(pred_msg, 10, timeout);
- } catch (xbt_ex& e) {
- if (e.category == timeout_error) {
- XBT_DEBUG("Timeout expired when sending a 'PREDECESSOR_LEAVING' to my successor %d", fingers_[0]);
- delete pred_msg;
- }
+ simgrid::s4u::Mailbox::by_name(std::to_string(fingers_[0]))->put(pred_msg, 10, timeout);
+ } catch (const simgrid::TimeoutException&) {
+ XBT_DEBUG("Timeout expired when sending a 'PREDECESSOR_LEAVING' to my successor %d", fingers_[0]);
+ delete pred_msg;
}
if (pred_id_ != -1 && pred_id_ != id_) {
XBT_DEBUG("Sending a 'SUCCESSOR_LEAVING' to my predecessor %d", pred_id_);
try {
- simgrid::s4u::Mailbox::byName(std::to_string(pred_id_))->put(succ_msg, 10, timeout);
- } catch (xbt_ex& e) {
- if (e.category == timeout_error) {
- XBT_DEBUG("Timeout expired when sending a 'SUCCESSOR_LEAVING' to my predecessor %d", pred_id_);
- delete succ_msg;
- }
+ simgrid::s4u::Mailbox::by_name(std::to_string(pred_id_))->put(succ_msg, 10, timeout);
+ } catch (const simgrid::TimeoutException&) {
+ XBT_DEBUG("Timeout expired when sending a 'SUCCESSOR_LEAVING' to my predecessor %d", pred_id_);
+ delete succ_msg;
}
}
}
void Node::randomLookup()
{
int res = id_;
- int random_index = RngStream_RandInt(stream, 0, nb_bits - 1);
+ // std::uniform_int_distribution<int> dist(0, nb_bits - 1);
+ // int random_index = dist(generator);
+ int random_index = generator() % nb_bits; // ensure reproducibility across platforms
int random_id = fingers_[random_index];
XBT_DEBUG("Making a lookup request for id %d", random_id);
if (random_id != id_)
/* Sets a finger of the current node.
*
- * \param node the current node
- * \param finger_index index of the finger to set (0 to nb_bits - 1)
- * \param id the id to set for this finger
+ * @param node the current node
+ * @param finger_index index of the finger to set (0 to nb_bits - 1)
+ * @param id the id to set for this finger
*/
void Node::setFinger(int finger_index, int id)
{
}
/* Sets the predecessor of the current node.
- * \param id the id to predecessor, or -1 to unset the predecessor
+ * @param id the id to predecessor, or -1 to unset the predecessor
*/
void Node::setPredecessor(int predecessor_id)
{
void Node::fixFingers()
{
XBT_DEBUG("Fixing fingers");
- int id = findSuccessor(id_ + powers2[next_finger_to_fix]);
+ int id = findSuccessor(id_ + (1U << next_finger_to_fix));
if (id != -1) {
if (id != fingers_[next_finger_to_fix]) {
setFinger(next_finger_to_fix, id);
XBT_VERB("My finger table:");
XBT_VERB("Start | Succ");
for (int i = 0; i < nb_bits; i++) {
- XBT_VERB(" %3d | %3d", (id_ + powers2[i]) % nb_keys, fingers_[i]);
+ XBT_VERB(" %3u | %3d", (id_ + (1U << i)) % nb_keys, fingers_[i]);
}
XBT_VERB("Predecessor: %d", pred_id_);
if (pred_id_ == -1)
return;
- simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::byName(std::to_string(pred_id_));
- simgrid::s4u::MailboxPtr return_mailbox = simgrid::s4u::Mailbox::byName(std::to_string(id_) + "_is_alive");
+ simgrid::s4u::Mailbox* mailbox = simgrid::s4u::Mailbox::by_name(std::to_string(pred_id_));
+ simgrid::s4u::Mailbox* return_mailbox = simgrid::s4u::Mailbox::by_name(std::to_string(id_) + "_is_alive");
ChordMessage* message = new ChordMessage(PREDECESSOR_ALIVE);
message->request_id = pred_id_;
XBT_DEBUG("Sending a 'Predecessor Alive' request to my predecessor %d", pred_id_);
try {
mailbox->put(message, 10, timeout);
- } catch (xbt_ex& e) {
- if (e.category == timeout_error) {
- XBT_DEBUG("Failed to send the 'Predecessor Alive' request to %d", pred_id_);
- delete message;
- return;
- }
+ } catch (const simgrid::TimeoutException&) {
+ XBT_DEBUG("Failed to send the 'Predecessor Alive' request to %d", pred_id_);
+ delete message;
+ return;
}
+
// receive the answer
XBT_DEBUG("Sent 'Predecessor Alive' request to %d, waiting for the answer on my mailbox '%s'", pred_id_,
- message->answer_to->getCname());
+ message->answer_to->get_cname());
simgrid::s4u::CommPtr comm = return_mailbox->get_async(&data);
try {
- comm->wait(timeout);
+ comm->wait_for(timeout);
XBT_DEBUG("Received the answer to my 'Predecessor Alive': my predecessor %d is alive", pred_id_);
delete static_cast<ChordMessage*>(data);
- } catch (xbt_ex& e) {
- if (e.category == timeout_error) {
- XBT_DEBUG("Failed to receive the answer to my 'Predecessor Alive' request");
- pred_id_ = -1;
- }
+ } catch (const simgrid::TimeoutException&) {
+ XBT_DEBUG("Failed to receive the answer to my 'Predecessor Alive' request");
+ pred_id_ = -1;
}
}
/* Asks its predecessor to a remote node
*
- * \param ask_to the node to ask to
- * \return the id of its predecessor node, or -1 if the request failed (or if the node does not know its predecessor)
+ * @param ask_to the node to ask to
+ * @return the id of its predecessor node, or -1 if the request failed (or if the node does not know its predecessor)
*/
int Node::remoteGetPredecessor(int ask_to)
{
int predecessor_id = -1;
void* data = nullptr;
- simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::byName(std::to_string(ask_to));
- simgrid::s4u::MailboxPtr return_mailbox = simgrid::s4u::Mailbox::byName(std::to_string(id_) + "_pred");
+ simgrid::s4u::Mailbox* mailbox = simgrid::s4u::Mailbox::by_name(std::to_string(ask_to));
+ simgrid::s4u::Mailbox* return_mailbox = simgrid::s4u::Mailbox::by_name(std::to_string(id_) + "_pred");
ChordMessage* message = new ChordMessage(GET_PREDECESSOR);
message->request_id = id_;
XBT_DEBUG("Sending a 'Get Predecessor' request to %d", ask_to);
try {
mailbox->put(message, 10, timeout);
- } catch (xbt_ex& e) {
- if (e.category == timeout_error) {
- XBT_DEBUG("Failed to send the 'Get Predecessor' request to %d", ask_to);
- delete message;
- return predecessor_id;
- }
+ } catch (const simgrid::TimeoutException&) {
+ XBT_DEBUG("Failed to send the 'Get Predecessor' request to %d", ask_to);
+ delete message;
+ return predecessor_id;
}
// receive the answer
XBT_DEBUG("Sent 'Get Predecessor' request to %d, waiting for the answer on my mailbox '%s'", ask_to,
- message->answer_to->getCname());
+ message->answer_to->get_cname());
simgrid::s4u::CommPtr comm = return_mailbox->get_async(&data);
try {
- comm->wait(timeout);
+ comm->wait_for(timeout);
ChordMessage* answer = static_cast<ChordMessage*>(data);
XBT_DEBUG("Received the answer to my 'Get Predecessor' request: the predecessor of node %d is %d", ask_to,
answer->answer_id);
predecessor_id = answer->answer_id;
delete answer;
- } catch (xbt_ex& e) {
- if (e.category == timeout_error) {
- XBT_DEBUG("Failed to receive the answer to my 'Get Predecessor' request");
- delete static_cast<ChordMessage*>(data);
- }
+ } catch (const simgrid::TimeoutException&) {
+ XBT_DEBUG("Failed to receive the answer to my 'Get Predecessor' request");
+ delete static_cast<ChordMessage*>(data);
}
return predecessor_id;
/* Returns the closest preceding finger of an id with respect to the finger table of the current node.
*
- * \param id the id to find
- * \return the closest preceding finger of that id
+ * @param id the id to find
+ * @return the closest preceding finger of that id
*/
int Node::closestPrecedingFinger(int id)
{
/* Makes the current node find the successor node of an id.
*
- * \param id the id to find
- * \return the id of the successor node, or -1 if the request failed
+ * @param id the id to find
+ * @return the id of the successor node, or -1 if the request failed
*/
int Node::findSuccessor(int id)
{
{
int successor = -1;
void* data = nullptr;
- simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::byName(std::to_string(ask_to));
- simgrid::s4u::MailboxPtr return_mailbox = simgrid::s4u::Mailbox::byName(std::to_string(id_) + "_succ");
+ simgrid::s4u::Mailbox* mailbox = simgrid::s4u::Mailbox::by_name(std::to_string(ask_to));
+ simgrid::s4u::Mailbox* return_mailbox = simgrid::s4u::Mailbox::by_name(std::to_string(id_) + "_succ");
ChordMessage* message = new ChordMessage(FIND_SUCCESSOR);
message->request_id = id_;
XBT_DEBUG("Sending a 'Find Successor' request to %d for id %d", ask_to, id);
try {
mailbox->put(message, 10, timeout);
- } catch (xbt_ex& e) {
- if (e.category == timeout_error) {
- XBT_DEBUG("Failed to send the 'Find Successor' request to %d for id %d", ask_to, id_);
- delete message;
- return successor;
- }
+ } catch (const simgrid::TimeoutException&) {
+ XBT_DEBUG("Failed to send the 'Find Successor' request to %d for id %d", ask_to, id_);
+ delete message;
+ return successor;
}
// receive the answer
XBT_DEBUG("Sent a 'Find Successor' request to %d for key %d, waiting for the answer", ask_to, id);
simgrid::s4u::CommPtr comm = return_mailbox->get_async(&data);
try {
- comm->wait(timeout);
+ comm->wait_for(timeout);
ChordMessage* answer = static_cast<ChordMessage*>(data);
XBT_DEBUG("Received the answer to my 'Find Successor' request for id %d: the successor of key %d is %d",
answer->request_id, id_, answer->answer_id);
successor = answer->answer_id;
delete answer;
- } catch (xbt_ex& e) {
- if (e.category == timeout_error) {
- XBT_DEBUG("Failed to receive the answer to my 'Find Successor' request");
- delete static_cast<ChordMessage*>(data);
- }
+ } catch (const simgrid::TimeoutException&) {
+ XBT_DEBUG("Failed to receive the answer to my 'Find Successor' request");
+ delete static_cast<ChordMessage*>(data);
}
+
return successor;
}
// send a "Notify" request to notify_id
XBT_DEBUG("Sending a 'Notify' request to %d", notify_id);
- simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::byName(std::to_string(notify_id));
+ simgrid::s4u::Mailbox* mailbox = simgrid::s4u::Mailbox::by_name(std::to_string(notify_id));
mailbox->put_init(message, 10)->detach(ChordMessage::destroy);
}
/* This function is called when a node receives a message.
*
- * \param message the message to handle (don't touch it afterward: it will be destroyed, reused or forwarded)
+ * @param message the message to handle (don't touch it afterward: it will be destroyed, reused or forwarded)
*/
void Node::handleMessage(ChordMessage* message)
{
message->type = FIND_SUCCESSOR_ANSWER;
message->answer_id = fingers_[0];
XBT_DEBUG("Sending back a 'Find Successor Answer' to %s (mailbox %s): the successor of %d is %d",
- message->issuer_host_name.c_str(), message->answer_to->getCname(), message->request_id,
+ message->issuer_host_name.c_str(), message->answer_to->get_cname(), message->request_id,
message->answer_id);
message->answer_to->put_init(message, 10)->detach(ChordMessage::destroy);
} else {
int closest = closestPrecedingFinger(message->request_id);
XBT_DEBUG("Forwarding the 'Find Successor' request for id %d to my closest preceding finger %d",
message->request_id, closest);
- simgrid::s4u::MailboxPtr mailbox = simgrid::s4u::Mailbox::byName(std::to_string(closest));
+ simgrid::s4u::Mailbox* mailbox = simgrid::s4u::Mailbox::by_name(std::to_string(closest));
mailbox->put_init(message, 10)->detach(ChordMessage::destroy);
}
break;
message->type = GET_PREDECESSOR_ANSWER;
message->answer_id = pred_id_;
XBT_DEBUG("Sending back a 'Get Predecessor Answer' to %s via mailbox '%s': my predecessor is %d",
- message->issuer_host_name.c_str(), message->answer_to->getCname(), message->answer_id);
+ message->issuer_host_name.c_str(), message->answer_to->get_cname(), message->answer_id);
message->answer_to->put_init(message, 10)->detach(ChordMessage::destroy);
break;
XBT_DEBUG("Receiving a 'Predecessor Alive' request from %s", message->issuer_host_name.c_str());
message->type = PREDECESSOR_ALIVE_ANSWER;
XBT_DEBUG("Sending back a 'Predecessor Alive Answer' to %s (mailbox %s)", message->issuer_host_name.c_str(),
- message->answer_to->getCname());
+ message->answer_to->get_cname());
message->answer_to->put_init(message, 10)->detach(ChordMessage::destroy);
break;
