--- /dev/null
+/* Copyright (c) 2010-2017. 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 "simgrid/msg.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(msg_async_wait, "Messages specific for this msg example");
+
+/* Main function of the Sender process */
+static int sender(int argc, char* argv[])
+{
+ xbt_assert(argc == 7, "The sender function expects 6 arguments from the XML deployment file");
+ long number_of_tasks = xbt_str_parse_int(argv[1], "Invalid amount of tasks: %s"); /* - number of tasks */
+ double task_comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s"); /* - computational cost */
+ double task_comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s"); /* - communication cost */
+ long receivers_count = xbt_str_parse_int(argv[4], "Invalid amount of receivers: %s"); /* - number of receivers */
+ double sleep_start_time = xbt_str_parse_double(argv[5], "Invalid sleep start time: %s"); /* - start time */
+ double sleep_test_time = xbt_str_parse_double(argv[6], "Invalid test time: %s"); /* - test time */
+
+ XBT_INFO("sleep_start_time : %f , sleep_test_time : %f", sleep_start_time, sleep_test_time);
+
+ MSG_process_sleep(sleep_start_time);
+ for (int i = 0; i < number_of_tasks; i++) {
+ char mailbox[80];
+ char taskname[80];
+
+ snprintf(mailbox, 79, "receiver-%ld", i % receivers_count);
+ snprintf(taskname, 79, "Task_%d", i);
+
+ /* This process first creates a task and send it asynchronously with @ref MSG_task_isend. Then, if: */
+ msg_task_t task = MSG_task_create(taskname, task_comp_size, task_comm_size, NULL);
+ msg_comm_t comm = MSG_task_isend(task, mailbox);
+ XBT_INFO("Send to receiver-%ld Task_%d", i % receivers_count, i);
+
+ if (sleep_test_time > 0) { /* - "test_time" is set to 0, wait on @ref MSG_comm_wait */
+ while (MSG_comm_test(comm) == 0) { /* - Call @ref MSG_comm_test every "test_time" otherwise */
+ MSG_process_sleep(sleep_test_time);
+ }
+ } else {
+ MSG_comm_wait(comm, -1);
+ }
+ MSG_comm_destroy(comm);
+ }
+
+ for (int i = 0; i < receivers_count; i++) {
+ char mailbox[80];
+ snprintf(mailbox, 79, "receiver-%d", i);
+ msg_task_t task = MSG_task_create("finalize", 0, 0, 0);
+ msg_comm_t comm = MSG_task_isend(task, mailbox);
+ XBT_INFO("Send to receiver-%d finalize", i);
+ if (sleep_test_time > 0) {
+ while (MSG_comm_test(comm) == 0) {
+ MSG_process_sleep(sleep_test_time);
+ }
+ } else {
+ MSG_comm_wait(comm, -1);
+ }
+ MSG_comm_destroy(comm);
+ }
+
+ XBT_INFO("Goodbye now!");
+ return 0;
+}
+
+/* Receiver process expects 3 arguments: */
+static int receiver(int argc, char* argv[])
+{
+ xbt_assert(argc == 4, "The relay_runner function does not accept any parameter from the XML deployment file");
+ int id = xbt_str_parse_int(argv[1], "Invalid id: %s"); /* - unique id */
+ double sleep_start_time = xbt_str_parse_double(argv[2], "Invalid sleep start parameter: %s"); /* - start time */
+ double sleep_test_time = xbt_str_parse_double(argv[3], "Invalid sleep test parameter: %s"); /* - test time */
+ XBT_INFO("sleep_start_time : %f , sleep_test_time : %f", sleep_start_time, sleep_test_time);
+
+ MSG_process_sleep(sleep_start_time); /* This process first sleeps for "start time" seconds. */
+
+ char mailbox[80];
+ snprintf(mailbox, 79, "receiver-%d", id);
+ while (1) {
+ msg_task_t task = NULL;
+ msg_comm_t comm = MSG_task_irecv(&task, mailbox); /* Then it posts asynchronous receives (@ref MSG_task_irecv) and*/
+ XBT_INFO("Wait to receive a task");
+
+ if (sleep_test_time > 0) { /* - if "test_time" is set to 0, wait on @ref MSG_comm_wait */
+ while (MSG_comm_test(comm) == 0) { /* - Call @ref MSG_comm_test every "test_time" otherwise */
+ MSG_process_sleep(sleep_test_time);
+ }
+ } else {
+ msg_error_t res = MSG_comm_wait(comm, -1);
+ xbt_assert(res == MSG_OK, "MSG_task_get failed");
+ }
+ MSG_comm_destroy(comm);
+
+ XBT_INFO("Received \"%s\"", MSG_task_get_name(task));
+ if (strcmp(MSG_task_get_name(task), "finalize") == 0) { /* If the received task is "finalize", the process ends */
+ MSG_task_destroy(task);
+ break;
+ }
+
+ XBT_INFO("Processing \"%s\"", MSG_task_get_name(task)); /* Otherwise, the task is processed */
+ MSG_task_execute(task);
+ XBT_INFO("\"%s\" done", MSG_task_get_name(task));
+ MSG_task_destroy(task);
+ }
+ XBT_INFO("I'm done. See you!");
+ return 0;
+}
+
+int main(int argc, char* argv[])
+{
+ MSG_init(&argc, argv);
+ xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
+ "\tExample: %s msg_platform.xml msg_deployment.xml\n",
+ argv[0], argv[0]);
+
+ MSG_create_environment(argv[1]); /* - Load the platform description */
+
+ MSG_function_register("sender", sender);
+ MSG_function_register("receiver", receiver);
+ MSG_launch_application(argv[2]); /* - Deploy the sender and receiver processes */
+
+ msg_error_t res = MSG_main(); /* - Run the simulation */
+
+ XBT_INFO("Simulation time %g", MSG_get_clock());
+
+ return res != MSG_OK;
+}
