SimGrid  3.14.159
Versatile Simulation of Distributed Systems
examples/msg/async-waitall/async-waitall.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_waitall, "Messages specific for this msg example");
static int sender(int argc, char *argv[])
{
xbt_assert(argc==5,"This function expects 4 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");
msg_comm_t *comm = xbt_new(msg_comm_t, number_of_tasks + receivers_count);
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);
msg_task_t task = MSG_task_create(taskname, task_comp_size, task_comm_size, NULL);
comm[i] = MSG_task_isend(task, mailbox);
XBT_INFO("Send to receiver-%ld Task_%d", i % receivers_count, i);
}
for (int i = 0; i < receivers_count; i++) {
char mailbox[80];
snprintf(mailbox,79, "receiver-%ld", i % receivers_count);
msg_task_t task = MSG_task_create("finalize", 0, 0, 0);
comm[i + number_of_tasks] = MSG_task_isend(task, mailbox);
XBT_INFO("Send to receiver-%ld finalize", i % receivers_count);
}
/* Here we are waiting for the completion of all communications */
MSG_comm_waitall(comm, (number_of_tasks + receivers_count), -1);
for (int i = 0; i < number_of_tasks + receivers_count; i++)
MSG_comm_destroy(comm[i]);
XBT_INFO("Goodbye now!");
xbt_free(comm);
return 0;
}
static int receiver(int argc, char *argv[])
{
xbt_assert(argc==2,"This function expects 1 parameter from the XML deployment file");
int id = xbt_str_parse_int(argv[1], "Any process of this example must have a numerical name, not %s");
char mailbox[80];
snprintf(mailbox,79, "receiver-%d", id);
while (1) {
XBT_INFO("Wait to receive a task");
msg_task_t task = NULL;
msg_comm_t comm = MSG_task_irecv(&task, mailbox);
msg_error_t res = MSG_comm_wait(comm, -1);
xbt_assert(res == MSG_OK, "MSG_task_get failed");
XBT_INFO("Received \"%s\"", MSG_task_get_name(task));
if (strcmp(MSG_task_get_name(task), "finalize") == 0) {
break;
}
XBT_INFO("Processing \"%s\"", MSG_task_get_name(task));
XBT_INFO("\"%s\" done", MSG_task_get_name(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_function_register("sender", sender);
MSG_function_register("receiver", receiver);
XBT_INFO("Simulation time %g", MSG_get_clock());
return res != MSG_OK;
}