internal void Flush()
{
while (_mailbox.PendingMessages > 0)
{
_mailbox.Receive()?.Deliver();
}
}
public void ReceiveCall <T>(IMailbox <object> mailbox, T actorInstance)
where T : ITypedActor
{
var m = (ICallable)mailbox.Receive();
m.Call(actorInstance);
}
private static void Main(string[] args)
{
IActorRuntime runtime = new SimpleActorRuntime();
Task mainTask = runtime.StartMain(() =>
{
// Normal actors.
// Creates an actor and yields its mailbox.
// Only the owner of a mailbox can call Receive.
// Any actor can Send to a mailbox.
// Every actor has its own mailbox that stores objects.
IMailbox <object> helloActorMailbox =
runtime.Create(() =>
{
IMailbox <object> myMailbox = runtime.CurrentMailbox();
object msg = myMailbox.Receive();
Console.WriteLine(msg);
msg = myMailbox.Receive();
Console.WriteLine(msg);
IMailbox <string> mailbox =
(IMailbox <string>)myMailbox.Receive();
mailbox.Send("message for separate mailbox");
Console.WriteLine(
$"I am actor with mailbox {myMailbox} and I am about to terminate.");
return(1);
});
helloActorMailbox.Send("hello");
helloActorMailbox.Send("world");
// Creates another (separate) mailbox for the current actor.
// The main mailbox of the current actor is not used in this example.
// Additional mailboxes can have a more specific type parameter than object.
IMailbox <string> separateMailbox =
runtime.CreateMailbox <string>();
// send it to helloActor
helloActorMailbox.Send(separateMailbox);
// receive a string on this separate mailbox (no casting)
string textResult = separateMailbox.Receive();
Console.WriteLine(textResult);
// Typed actors.
// Built on top of IActorRuntime
// (which could be implemented in many ways).
ITypedActorRuntime typedRuntime =
new SimpleTypedActorRuntime(runtime);
// Create a typed actor: answerPhone is a proxy object.
// The proxy class for IAnswerPhone is generated dynamically (once)
// at runtime using System.Reflection.Emit.
IAnswerPhone answerPhone =
typedRuntime.Create <IAnswerPhone>(new AnswerPhone());
IPhoner phoner1 = typedRuntime.Create <IPhoner>(new Phoner());
IPhoner phoner2 = typedRuntime.Create <IPhoner>(new Phoner());
// Send messages to the actors by invoking methods.
phoner1.Init(1, answerPhone);
phoner2.Init(2, answerPhone);
phoner2.Go();
phoner1.Go();
// We can use a (lower level) additional mailbox to receive results.
IMailbox <string> returnMailbox = runtime.CreateMailbox <string>();
answerPhone.CheckMessages(returnMailbox);
Console.WriteLine(returnMailbox.Receive());
// Or we can call methods that return a value, which
// is similar to the above (current actor is blocked).
// Methods with a return value can also have `out` and `ref` parameters.
int b;
string res = answerPhone.CheckMessagesSync(55, out b, "temp");
Console.WriteLine(res);
Console.WriteLine($"b is {b}"); // Should be 3
// If a method with a return type throws an exception
// (when executing on another actor), the exception is
// sent back to us (the caller) and thrown.
b = 0;
try
{
res = answerPhone.CheckMessagesSync(56, out b, "temp");
}
catch (ArgumentException ex)
{
// The stack trace includes the stack frames from the
// other actor.
Console.WriteLine(ex);
Console.WriteLine($"b is {b}"); // Should be 3
}
});
mainTask.Wait();
// Random testing (can use actors or typed actors).
// Do 100 executions of the test case below.
ITestLauncher testLauncher = new TestLauncher();
testLauncher.SetScheduler(new RandomScheduler(0));
for (int i = 1; i <= 100; ++i)
{
Console.WriteLine("\n\n... ITERATION " + i + "\n\n");
testLauncher.Execute((runtime2, testingRuntime) =>
{
IMailbox <object> helloActorMailbox =
runtime2.Create(() =>
{
IMailbox <object> myMailbox =
runtime2.CurrentMailbox();
object msg = myMailbox.Receive();
Console.WriteLine(msg);
msg = myMailbox.Receive();
Console.WriteLine(msg);
IMailbox <string> mailbox =
(IMailbox <string>)myMailbox.Receive();
mailbox.Send("message for separate mailbox");
Console.WriteLine(
$"I am actor with mailbox {myMailbox} and I am about to terminate.");
return(1);
});
helloActorMailbox.Send("hello");
helloActorMailbox.Send("world");
IMailbox <string> separateMailbox =
runtime2.CreateMailbox <string>();
helloActorMailbox.Send(separateMailbox);
Console.WriteLine(separateMailbox.Receive());
});
}
Console.WriteLine("[Done]");
Console.ReadLine();
}