SimGrid  3.16
Versatile Simulation of Distributed Systems
examples/msg/async-waitany/async-waitany.c
/* Copyright (c) 2010-2016. 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_waitany, "Messages specific for this msg example");
static int sender(int argc, char *argv[])
{
xbt_assert(argc==6, "This function expects 5 parameters from the XML deployment file");
long number_of_tasks = xbt_str_parse_int(argv[1], "Invalid amount of tasks: %s");
double task_comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s");
double task_comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s");
long receivers_count = xbt_str_parse_int(argv[4], "Invalid amount of receivers: %s");
int diff_com = xbt_str_parse_int(argv[5], "Invalid value for diff_comm: %s");
xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
/* First pack the communications in the dynar */
for (int i = 0; i < number_of_tasks; i++) {
double coef = (diff_com == 0) ? 1 : (i + 1);
char mailbox[80];
char taskname[80];
snprintf(mailbox,79, "receiver-%ld", (i % receivers_count));
snprintf(taskname,79, "Task_%d", i);
msg_task_t task = MSG_task_create(taskname, task_comp_size, task_comm_size / coef, NULL);
msg_comm_t comm = MSG_task_isend(task, mailbox);
XBT_INFO("Send to receiver-%ld %s comm_size %f", i % receivers_count, taskname, task_comm_size / coef);
}
/* Here we are waiting for the completion of all communications */
while (xbt_dynar_is_empty(comms) == 0) {
xbt_dynar_remove_at(comms, MSG_comm_waitany(comms), &comm);
}
xbt_dynar_free(&comms);
/* Here we are waiting for the completion of all tasks */
for (int i = 0; i < receivers_count; i++) {
msg_task_t task = NULL;
msg_comm_t comm = MSG_task_irecv(&task, "finalize");
msg_error_t res_wait = MSG_comm_wait(comm, -1);
xbt_assert(res_wait == MSG_OK, "MSG_comm_wait failed");
}
XBT_INFO("Goodbye now!");
return 0;
}
static int receiver(int argc, char *argv[])
{
xbt_assert(argc==3, "This function expects 2 parameters from the XML deployment file");
int id = xbt_str_parse_int(argv[1], "ID should be numerical, not %s");
int task_amount = xbt_str_parse_int(argv[2], "Invalid amount of tasks: %s");
msg_task_t *tasks = xbt_new(msg_task_t, task_amount);
xbt_dynar_t comms = xbt_dynar_new(sizeof(msg_comm_t), NULL);
char mailbox[80];
snprintf(mailbox,79, "receiver-%d", id);
for (int i = 0; i < task_amount; i++) {
XBT_INFO("Wait to receive task %d", i);
tasks[i] = NULL;
msg_comm_t comm = MSG_task_irecv(&tasks[i], mailbox);
}
/* Here we are waiting for the receiving of all communications */
while (!xbt_dynar_is_empty(comms)) {
// MSG_comm_waitany returns the rank of the comm that just ended. Remove it.
xbt_dynar_remove_at(comms, MSG_comm_waitany(comms), &comm);
XBT_INFO("Processing \"%s\"", MSG_task_get_name(task));
XBT_INFO("\"%s\" done", MSG_task_get_name(task));
xbt_assert(err == MSG_OK, "MSG_task_destroy failed");
}
xbt_dynar_free(&comms);
xbt_free(tasks);
/* Here we tell to sender that all tasks are done */
MSG_task_send(MSG_task_create(NULL, 0, 0, NULL), "finalize");
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_function_register("sender", sender);
MSG_function_register("receiver", receiver);
XBT_INFO("Simulation time %g", MSG_get_clock());
return res != MSG_OK;
}