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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. */
import org.simgrid.s4u.*;
class test_detach extends Actor {
int size;
test_detach(double size) { this.size = (int)size; }
public void run()
{
Disk disk = Host.current().get_disks()[0];
this.sleep_for(0.2);
Engine.info("Hello! read %d bytes from %s", size, disk.get_name());
Io activity = disk.io_init(size, Io.OpType.READ);
// Attach a callback to print some log when the detached activity completes
activity.on_this_completion_cb(new CallbackIo() {
@Override public void run(Io io)
{
Engine.info("Detached activity is done");
}
});
activity.detach();
Engine.info("Goodbye now!");
}
}
class test extends Actor {
int size;
test(double size) { this.size = (int)size; }
public void run() throws SimgridException
{
Disk disk = Host.current().get_disks()[0];
Engine.info("Hello! read %d bytes from %s", size, disk.get_name());
Io activity = disk.io_init(size, Io.OpType.READ);
activity.start();
activity.await();
Engine.info("Goodbye now!");
}
}
class test_waitfor extends Actor {
int size;
test_waitfor(double size) { this.size = (int)size; }
public void run()
{
Disk disk = Host.current().get_disks()[0];
Engine.info("Hello! write %d bytes from %s", size, disk.get_name());
Io activity = disk.write_async(size);
try {
activity.await_for(0.5);
} catch (TimeoutException e) {
Engine.info("Asynchronous write: Timeout!");
}
Engine.info("Goodbye now!");
}
}
class test_cancel extends Actor {
int size;
test_cancel(double size) { this.size = (int)size; }
public void run()
{
Disk disk = Host.current().get_disks()[0];
this.sleep_for(0.5);
Engine.info("Hello! write %d bytes from %s", size, disk.get_name());
Io activity = disk.write_async(size);
this.sleep_for(0.5);
Engine.info("I changed my mind, cancel!");
activity.cancel();
Engine.info("Goodbye now!");
}
}
class test_monitor extends Actor {
int size;
test_monitor(double size) { this.size = (int)size; }
public void run() throws SimgridException
{
Disk disk = Host.current().get_disks()[0];
this.sleep_for(1);
Io activity = disk.write_async(size);
while (!activity.test()) {
Engine.info("Remaining amount of bytes to write: %g", activity.get_remaining());
this.sleep_for(0.2);
}
activity.await();
Engine.info("Goodbye now!");
}
}
public class io_async {
public static void main(String[] args)
{
Engine e = new Engine(args);
e.load_platform(args[0]);
e.host_by_name("bob").add_actor("test", new test(2e7));
e.host_by_name("bob").add_actor("test_detach", new test_detach(2e7));
e.host_by_name("alice").add_actor("test_waitfor", new test_waitfor(5e7));
e.host_by_name("alice").add_actor("test_cancel", new test_cancel(5e7));
e.host_by_name("alice").add_actor("test_monitor", new test_monitor(5e7));
e.run();
Engine.info("Simulation ends.");
// The following call is useless in your code, but our continuous integration uses it to track memleaks
e.force_garbage_collection();
}
}
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