1 /* Copyright (c) 2010-2020. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "simgrid/actor.h"
7 #include "simgrid/comm.h"
8 #include "simgrid/engine.h"
9 #include "simgrid/host.h"
10 #include "simgrid/mailbox.h"
12 #include "xbt/asserts.h"
16 #include <stdio.h> /* snprintf */
18 XBT_LOG_NEW_DEFAULT_CATEGORY(msg_async_waitall, "Messages specific for this msg example");
20 static void sender(int argc, char* argv[])
22 xbt_assert(argc == 4, "This function expects 3 parameters from the XML deployment file");
23 long messages_count = xbt_str_parse_int(argv[1], "Invalid message count: %s");
24 long message_size = xbt_str_parse_int(argv[2], "Invalid message size: %s");
25 long receivers_count = xbt_str_parse_int(argv[3], "Invalid amount of receivers: %s");
27 /* Array in which we store all ongoing communications */
28 sg_comm_t* pending_comms = xbt_malloc(sizeof(sg_comm_t) * (messages_count + receivers_count));
29 int pending_comms_count = 0;
31 /* Make an array of the mailboxes to use */
32 sg_mailbox_t* mboxes = xbt_malloc(sizeof(sg_mailbox_t) * receivers_count);
33 for (long i = 0; i < receivers_count; i++) {
34 char mailbox_name[80];
35 snprintf(mailbox_name, 79, "receiver-%ld", i);
36 sg_mailbox_t mbox = sg_mailbox_by_name(mailbox_name);
40 /* Start dispatching all messages to receivers, in a round robin fashion */
41 for (int i = 0; i < messages_count; i++) {
43 snprintf(msg_content, 79, "Message %d", i);
44 sg_mailbox_t mbox = mboxes[i % receivers_count];
45 XBT_INFO("Send '%s' to '%s'", msg_content, sg_mailbox_get_name(mbox));
46 /* Create a communication representing the ongoing communication, and store it in pending_comms */
47 pending_comms[pending_comms_count++] = sg_mailbox_put_async(mbox, xbt_strdup(msg_content), message_size);
50 /* Start sending messages to let the workers know that they should stop */
51 for (int i = 0; i < receivers_count; i++) {
52 XBT_INFO("Send 'finalize' to 'receiver-%d'", i);
53 char* end_msg = xbt_strdup("finalize");
54 sg_mailbox_t mbox = mboxes[i % receivers_count];
55 pending_comms[pending_comms_count++] = sg_mailbox_put_async(mbox, end_msg, 0);
58 XBT_INFO("Done dispatching all messages");
60 /* Now that all message exchanges were initiated, wait for their completion in one single call */
61 sg_comm_wait_all(pending_comms, pending_comms_count);
66 XBT_INFO("Goodbye now!");
69 static void receiver(int argc, char* argv[])
71 xbt_assert(argc == 2, "Expecting one parameter from the XML deployment file but got %d", argc);
72 int id = xbt_str_parse_int(argv[1], "ID should be numerical, not %s");
73 char mailbox_name[80];
74 snprintf(mailbox_name, 79, "receiver-%d", id);
75 sg_mailbox_t mbox = sg_mailbox_by_name(mailbox_name);
76 XBT_INFO("Wait for my first message");
78 char* received = (char*)sg_mailbox_get(mbox);
79 XBT_INFO("I got a '%s'.", received);
80 if (!strcmp(received, "finalize")) { // If it's a finalize message, we're done
88 int main(int argc, char* argv[])
90 simgrid_init(&argc, argv);
92 "Usage: %s platform_file deployment_file\n"
93 "\tExample: %s msg_platform.xml msg_deployment.xml\n",
96 simgrid_load_platform(argv[1]);
98 simgrid_register_function("sender", sender);
99 simgrid_register_function("receiver", receiver);
100 simgrid_load_deployment(argv[2]);