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/* Copyright (c) 2007-2025. 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/actor.h"
#include "simgrid/engine.h"
#include "simgrid/exec.h"
#include "simgrid/host.h"
#include "xbt/asserts.h"
#include "xbt/log.h"
XBT_LOG_NEW_DEFAULT_CATEGORY(exec_async, "Messages specific for this example");
/* This actor simply waits for its task completion after starting it.
* That's exactly equivalent to synchronous execution. */
static void waiter(int argc, char* argv[])
{
double computation_amount = sg_host_get_speed(sg_host_self());
XBT_INFO("Execute %g flops, should take 1 second.", computation_amount);
sg_exec_t activity = sg_actor_exec_init(computation_amount);
sg_exec_start(activity);
sg_exec_wait(activity);
XBT_INFO("Goodbye now!");
}
/* This actor tests the ongoing execution until its completion, and don't wait before it's terminated. */
static void monitor(int argc, char* argv[])
{
double computation_amount = sg_host_get_speed(sg_host_self());
XBT_INFO("Execute %g flops, should take 1 second.", computation_amount);
sg_exec_t activity = sg_actor_exec_init(computation_amount);
sg_exec_start(activity);
while (!sg_exec_test(activity)) {
XBT_INFO("Remaining amount of flops: %g (%.0f%%)", sg_exec_get_remaining(activity),
100 * sg_exec_get_remaining_ratio(activity));
sg_actor_sleep_for(0.3);
}
XBT_INFO("Goodbye now!");
}
/* This actor cancels the ongoing execution after a while. */
static void canceller(int argc, char* argv[])
{
double computation_amount = sg_host_get_speed(sg_host_self());
XBT_INFO("Execute %g flops, should take 1 second.", computation_amount);
sg_exec_t activity = sg_actor_exec_async(computation_amount);
sg_actor_sleep_for(0.5);
XBT_INFO("I changed my mind, cancel!");
sg_exec_cancel(activity);
XBT_INFO("Goodbye now!");
}
int main(int argc, char* argv[])
{
simgrid_init(&argc, argv);
simgrid_load_platform(argv[1]);
sg_host_t fafard = sg_host_by_name("Fafard");
sg_host_t ginette = sg_host_by_name("Ginette");
sg_host_t boivin = sg_host_by_name("Boivin");
sg_actor_create("wait", fafard, &waiter, 0, NULL);
sg_actor_create("monitor", ginette, &monitor, 0, NULL);
sg_actor_create("cancel", boivin, &canceller, 0, NULL);
simgrid_run();
XBT_INFO("Simulation time %g", simgrid_get_clock());
return 0;
}
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