-/* Copyright (c) 2010-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2010-2020. 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 <iostream>
#include <string>
-XBT_LOG_NEW_DEFAULT_CATEGORY(msg_async_wait, "Messages specific for this s4u example");
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_async_wait, "Messages specific for this s4u example");
-static int sender(int argc, char** argv)
+static void sender(int argc, char** argv)
{
xbt_assert(argc == 4, "Expecting 3 parameters from the XML deployment file but got %d", argc);
long messages_count = std::stol(argv[1]); /* - number of tasks */
double msg_size = std::stol(argv[2]); /* - communication cost in bytes */
long receivers_count = std::stod(argv[3]); /* - number of receivers */
+ /* Vector in which we store all ongoing communications */
std::vector<simgrid::s4u::CommPtr> pending_comms;
+ /* Make a vector of the mailboxes to use */
+ std::vector<simgrid::s4u::Mailbox*> mboxes;
+ for (int i = 0; i < receivers_count; i++)
+ mboxes.push_back(simgrid::s4u::Mailbox::by_name(std::string("receiver-") + std::to_string(i)));
+
/* Start dispatching all messages to receivers, in a round robin fashion */
for (int i = 0; i < messages_count; i++) {
+ std::string msg_content = std::string("Message ") + std::to_string(i);
+ // Copy the data we send: the 'msg_content' variable is not a stable storage location.
+ // It will be destroyed when this actor leaves the loop, ie before the receiver gets the data
+ std::string* payload = new std::string(msg_content);
+
+ XBT_INFO("Send '%s' to '%s'", msg_content.c_str(), mboxes[i % receivers_count]->get_cname());
- std::string mboxName = std::string("receiver-") + std::to_string(i % receivers_count);
- simgrid::s4u::MailboxPtr mbox = simgrid::s4u::Mailbox::by_name(mboxName);
- std::string msgName = std::string("Message ") + std::to_string(i);
- std::string* payload = new std::string(msgName); // copy the data we send:
- // 'msgName' is not a stable storage location
- XBT_INFO("Send '%s' to '%s'", msgName.c_str(), mboxName.c_str());
- /* Create a communication representing the ongoing communication */
- simgrid::s4u::CommPtr comm = mbox->put_async(payload, msg_size);
- /* Add this comm to the vector of all known comms */
+ /* Create a communication representing the ongoing communication, and store it in pending_comms */
+ simgrid::s4u::CommPtr comm = mboxes[i % receivers_count]->put_async(payload, msg_size);
pending_comms.push_back(comm);
}
/* Start sending messages to let the workers know that they should stop */
for (int i = 0; i < receivers_count; i++) {
- std::string mboxName = std::string("receiver-") + std::to_string(i % receivers_count);
- simgrid::s4u::MailboxPtr mbox = simgrid::s4u::Mailbox::by_name(mboxName);
- std::string* payload = new std::string("finalize"); // Make a copy of the data we will send
-
- simgrid::s4u::CommPtr comm = mbox->put_async(payload, 0);
+ XBT_INFO("Send 'finalize' to 'receiver-%d'", i);
+ simgrid::s4u::CommPtr comm = mboxes[i]->put_async(new std::string("finalize"), 0);
pending_comms.push_back(comm);
- XBT_INFO("Send 'finalize' to 'receiver-%ld'", i % receivers_count);
}
XBT_INFO("Done dispatching all messages");
/* Now that all message exchanges were initiated, wait for their completion, in order of creation. */
while (not pending_comms.empty()) {
simgrid::s4u::CommPtr comm = pending_comms.back();
- comm->wait(); // we could provide a timeout as a parameter
+ comm->wait();
pending_comms.pop_back(); // remove it from the list
}
XBT_INFO("Goodbye now!");
- return 0;
}
/* Receiver actor expects 1 argument: its ID */
-static int receiver(int argc, char** argv)
+static void receiver(int argc, char** argv)
{
xbt_assert(argc == 2, "Expecting one parameter from the XML deployment file but got %d", argc);
- simgrid::s4u::MailboxPtr mbox = simgrid::s4u::Mailbox::by_name(std::string("receiver-") + argv[1]);
+ simgrid::s4u::Mailbox* mbox = simgrid::s4u::Mailbox::by_name(std::string("receiver-") + argv[1]);
XBT_INFO("Wait for my first message");
for (bool cont = true; cont;) {
- std::string* received = static_cast<std::string*>(mbox->get());
+ const std::string* received = static_cast<std::string*>(mbox->get());
XBT_INFO("I got a '%s'.", received->c_str());
if (*received == "finalize")
cont = false; // If it's a finalize message, we're done.
delete received;
}
- return 0;
}
int main(int argc, char *argv[])
