Esempio n. 1
0
        public static ServicePort Create(DispatcherQueue taskQueue)
        {
            var service = new SimpleService(taskQueue);

            service.Initialize();
            return(service._mainPort);
        }
Esempio n. 2
0
        /// <summary>
        /// Service start
        /// </summary>
        protected override void Start()
        {
            //
            // Add service specific initialization here
            //

            base.Start();
            int exampleNum = 3;

            switch (exampleNum)
            {
            case 1:
                // Create port that accepts instances of System.Int32
                Port <int> portInt1 = new Port <int>();

                // Add the number 10 to the port
                portInt1.Post(10);

                // Display number of items to the console
                Console.WriteLine(portInt1.ItemCount);
                break;

            case 2:
                // Create port that accepts instances of System.Int32
                var portInt2 = new Port <int>();

                // Add the number 10 to the port
                portInt2.Post(10);

                // Display number of items to the console
                Console.WriteLine(portInt2.ItemCount);

                // retrieve the item using Test
                int item2;
                var hasItem2 = portInt2.Test(out item2);
                if (hasItem2)
                {
                    Console.WriteLine("Found item in port:" + item2);
                }
                portInt2.Post(11);
                // alternative to using Test is just assignment of port to variable using
                // implicit operator
                var nextItem = portInt2;

                Console.WriteLine("Found item in port:" + nextItem);
                break;

            case 3:
                // Create port that accepts instances of System.Int32
                var portInt3 = new Port <int>();

                // Add the number 10 to the port
                portInt3.Post(10);

                // Display number of items to the console
                Console.WriteLine(portInt3.ItemCount);

                // create dispatcher and dispatcher queue for scheduling tasks
                Dispatcher      dispatcher = new Dispatcher();
                DispatcherQueue taskQueue  = new DispatcherQueue("sample queue", dispatcher);

                // retrieve the item by attaching a one time receiver
                Arbiter.Activate(
                    taskQueue,
                    portInt3.Receive(delegate(int item3)     // anonymous method
                {
                    // this code executes in parallel with the method that
                    // activated it
                    Console.WriteLine("Received item:" + item3);
                }
                                     ));
                // any code below runs in parallel with delegate

                break;

            case 4:
                // Create a PortSet using generic type arguments
                var genericPortSet4 = new PortSet <int, string, double>();
                genericPortSet4.Post(10);
                genericPortSet4.Post("hello");
                genericPortSet4.Post(3.14159);

                // Create a runtime PortSet, using the initialization
                // constructor to supply an array of types
                PortSet runtimePortSet4 = new PortSet(
                    typeof(int),
                    typeof(string),
                    typeof(double)
                    );

                runtimePortSet4.PostUnknownType(10);
                runtimePortSet4.PostUnknownType("hello");
                runtimePortSet4.PostUnknownType(3.14159);
                break;

            case 5:
                // create dispatcher and dispatcher queue for scheduling tasks
                Dispatcher      dispatcher5 = new Dispatcher();
                DispatcherQueue taskQueue5  = new DispatcherQueue("sample queue", dispatcher5);
                CcrConsolePort  port5       = CcrConsoleService.Create(taskQueue5);
                break;

            case 6:
                Dispatcher      dispatcher6 = new Dispatcher();
                DispatcherQueue taskQueue6  = new DispatcherQueue("sample queue", dispatcher6);
                CcrConsolePort  port6       = CcrConsoleService.Create(taskQueue6);
                var             portSet6    = new PortSet <int, string, double>();
                // the following statement compiles because of the implicit assignment operators
                // that "extract" the instance of Port<int> from the PortSet
                var portInt6 = portSet6;

                // the implicit assignment operator is used below to "extract" the Port<int>
                // instance so the int receiver can be registered
                Arbiter.Activate(taskQueue6,
                                 Arbiter.Receive <int>(true, portSet6, item => Console.WriteLine(item))
                                 );

                break;

            case 7:
                Dispatcher      dispatcher7 = new Dispatcher();
                DispatcherQueue taskQueue7  = new DispatcherQueue("sample queue", dispatcher7);
                var             port7       = new Port <int>();
                Arbiter.Activate(taskQueue7,
                                 Arbiter.Receive(
                                     true,
                                     port7,
                                     item => Console.WriteLine(item)

                                     /** older syntax
                                      *    delegate(int item){
                                      *        Console.WriteLine(item);
                                      *    }
                                      *
                                      **/

                                     )
                                 );

                // post item, so delegate executes
                port7.Post(5);
                break;

            case 8:
                Dispatcher      dispatcher8 = new Dispatcher();
                DispatcherQueue taskQueue8  = new DispatcherQueue("sample queue", dispatcher8);
                var             port8       = new Port <int>();
                // alternate version that explicitly constructs a Receiver by passing
                // Arbiter class factory methods
                var persistedReceiver = new Receiver <int>(
                    true,                                           // persisted
                    port8,
                    null,                                           // no predicate
                    new Task <int>(item => Console.WriteLine(item)) // task to execute
                    );
                Arbiter.Activate(taskQueue8, persistedReceiver);
                break;

            case 9:
                Dispatcher      dispatcher9 = new Dispatcher();
                DispatcherQueue taskQueue9  = new DispatcherQueue("sample queue", dispatcher9);
                // create a simple service listening on a port
                ServicePort servicePort9 = SimpleService.Create(taskQueue9);

                // create request
                GetState get = new GetState();

                // post request
                servicePort9.Post(get);

                // use the extension method on the PortSet that creates a choice
                // given two types found on one PortSet. This a common use of
                // Choice to deal with responses that have success or failure
                Arbiter.Activate(taskQueue9,
                                 get.ResponsePort.Choice(
                                     s => Console.WriteLine(s),  // delegate for success
                                     ex => Console.WriteLine(ex) // delegate for failure
                                     ));
                break;

            case 10:
                Dispatcher      dispatcher10 = new Dispatcher();
                DispatcherQueue taskQueue10  = new DispatcherQueue("sample queue", dispatcher10);
                var             portDouble   = new Port <double>();
                var             portString   = new Port <string>();

                // activate a joined receiver that will execute only when one
                // item is available in each port.
                Arbiter.Activate(taskQueue10,
                                 portDouble.Join(
                                     portString,             // port to join with
                                     (value, stringValue) => // delegate
                {
                    value      /= 2.0;
                    stringValue = value.ToString();
                    // post back updated values
                    portDouble.Post(value);
                    portString.Post(stringValue);
                })
                                 );

                // post items. The order does not matter, which is what Join its power
                portDouble.Post(3.14159);
                portString.Post("0.1");

                //after the last post the delegate above will execute
                break;
            }
        }