-/* Copyright (c) 2010-2017. 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. */
/* This example shows how to block on the completion of a set of communications.
*
* As for the other asynchronous examples, the sender initiate all the messages it wants to send and
- * pack the resulting simgrid::s4u::CommPtr objects in a vector. All messages thus occurs concurrently.
+ * pack the resulting simgrid::s4u::CommPtr objects in a vector. All messages thus occur concurrently.
*
* The sender then blocks until all ongoing communication terminate, using simgrid::s4u::Comm::wait_all()
*
#include <iostream>
#include <string>
-XBT_LOG_NEW_DEFAULT_CATEGORY(msg_async_waitall, "Messages specific for this s4u example");
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_async_waitall, "Messages specific for this s4u example");
class Sender {
- long messages_count; /* - number of tasks */
+ long messages_count; /* - number of messages */
long receivers_count; /* - number of receivers */
- double msg_size; /* - communication cost in bytes */
+ double msg_size; /* - message size in bytes */
public:
explicit Sender(std::vector<std::string> args)
}
void operator()()
{
+ // sphinx-doc: init-begin (this line helps the doc to build; ignore it)
+ /* 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)));
+ // sphinx-doc: init-end
+
/* 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 it
+ 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::byName(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 */
+ /* Start sending messages to let the workers know that they should stop */ // sphinx-doc: put-begin
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::byName(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 one single call */
simgrid::s4u::Comm::wait_all(&pending_comms);
+ // sphinx-doc: put-end
XBT_INFO("Goodbye now!");
}
/* Receiver actor expects 1 argument: its ID */
class Receiver {
- simgrid::s4u::MailboxPtr mbox;
+ simgrid::s4u::Mailbox* mbox;
public:
explicit Receiver(std::vector<std::string> args)
{
xbt_assert(args.size() == 2, "Expecting one parameter from the XML deployment file but got %zu", args.size());
std::string mboxName = std::string("receiver-") + args[1];
- mbox = simgrid::s4u::Mailbox::byName(mboxName);
+ mbox = simgrid::s4u::Mailbox::by_name(mboxName);
}
void operator()()
{
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());
cont = (*received != "finalize"); // If it's a finalize message, we're done
// Receiving the message was all we were supposed to do
xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n", argv[0]);
simgrid::s4u::Engine e(&argc, argv);
- e.registerFunction<Sender>("sender");
- e.registerFunction<Receiver>("receiver");
+ e.register_actor<Sender>("sender");
+ e.register_actor<Receiver>("receiver");
- e.loadPlatform(argv[1]);
- e.loadDeployment(argv[2]);
+ e.load_platform(argv[1]);
+ e.load_deployment(argv[2]);
e.run();
return 0;
