Exemple #1
0
        static void Main(string[] args)
        {
            var log    = Devices.CreateLogDevice(Path.GetTempPath() + "hybridlog");
            var objlog = Devices.CreateObjectLogDevice(Path.GetTempPath() + "hybridlog");

            var h = new FasterKV
                    <MyKey, MyValue, MyInput, MyOutput, MyContext, MyFunctions>
                        (128, new MyFunctions(),
                        new LogSettings {
                LogDevice = log, ObjectLogDevice = objlog, MemorySizeBits = 29
            },
                        null,
                        new SerializerSettings <MyKey, MyValue> {
                keySerializer = () => new MyKeySerializer(), valueSerializer = () => new MyValueSerializer()
            }
                        );

            var context = default(MyContext);

            h.StartSession();

            for (int i = 0; i < 20000; i++)
            {
                var _key = new MyKey {
                    key = i
                };
                var value = new MyValue {
                    value = i
                };
                h.Upsert(ref _key, ref value, context, 0);
                if (i % 32 == 0)
                {
                    h.Refresh();
                }
            }
            var key = new MyKey {
                key = 23
            };
            var      input = default(MyInput);
            MyOutput g1    = new MyOutput();

            h.Read(ref key, ref input, ref g1, context, 0);

            h.CompletePending(true);

            MyOutput g2 = new MyOutput();

            key = new MyKey {
                key = 46
            };
            h.Read(ref key, ref input, ref g2, context, 0);
            h.CompletePending(true);

            Console.WriteLine("Success!");
            Console.ReadLine();
        }
Exemple #2
0
        static void Main(string[] args)
        {
            // This sample uses class key and value types, which are not blittable (i.e., they
            // require a pointer to heap objects). Such datatypes include variable length types
            // such as strings. You can override the default key equality comparer in two ways;
            // (1) Make Key implement IFasterEqualityComparer<Key> interface
            // (2) Provide IFasterEqualityComparer<Key> instance as param to constructor
            // FASTER stores the actual objects in a separate object log.
            // Note that serializers are required for class types, see below.

            var log    = Devices.CreateLogDevice(Path.GetTempPath() + "hlog.log");
            var objlog = Devices.CreateLogDevice(Path.GetTempPath() + "hlog.obj.log");

            var h = new FasterKV
                    <MyKey, MyValue, MyInput, MyOutput, MyContext, MyFunctions>
                        (1L << 20, new MyFunctions(),
                        new LogSettings {
                LogDevice = log, ObjectLogDevice = objlog, MemorySizeBits = 29
                },
                        null,
                        new SerializerSettings <MyKey, MyValue> {
                keySerializer = () => new MyKeySerializer(), valueSerializer = () => new MyValueSerializer()
                }
                        );

            var context = default(MyContext);

            // Each thread calls StartSession to register itself with FASTER
            h.StartSession();

            for (int i = 0; i < 20000; i++)
            {
                var _key = new MyKey {
                    key = i
                };
                var value = new MyValue {
                    value = i
                };
                h.Upsert(ref _key, ref value, context, 0);

                // Each thread calls Refresh periodically for thread coordination
                if (i % 1024 == 0)
                {
                    h.Refresh();
                }
            }
            var key = new MyKey {
                key = 23
            };
            var      input  = default(MyInput);
            MyOutput g1     = new MyOutput();
            var      status = h.Read(ref key, ref input, ref g1, context, 0);

            if (status == Status.OK && g1.value.value == key.key)
            {
                Console.WriteLine("Success!");
            }
            else
            {
                Console.WriteLine("Error!");
            }

            MyOutput g2 = new MyOutput();

            key = new MyKey {
                key = 46
            };
            status = h.Read(ref key, ref input, ref g2, context, 0);

            if (status == Status.OK && g2.value.value == key.key)
            {
                Console.WriteLine("Success!");
            }
            else
            {
                Console.WriteLine("Error!");
            }

            /// Delete key, read to verify deletion
            var output = new MyOutput();

            h.Delete(ref key, context, 0);
            status = h.Read(ref key, ref input, ref output, context, 0);
            if (status == Status.NOTFOUND)
            {
                Console.WriteLine("Success!");
            }
            else
            {
                Console.WriteLine("Error!");
            }

            // Each thread ends session when done
            h.StopSession();

            // Dispose FASTER instance and log
            h.Dispose();
            log.Close();
            objlog.Close();

            Console.WriteLine("Press <ENTER> to end");
            Console.ReadLine();
        }