implab/ImplabNet Commit - r151:ec91a6dfa5b3

Added support for 'await' operator to promises

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r151:ec91a6dfa5b3 v2

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r151:ec91a6dfa5b3

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Implab/PromiseAwaiter.cs created 644 +28 0

@@ -0,0 +1,28
	1	using System;
	2	using System.Runtime.CompilerServices;
	3
	4	namespace Implab {
	5	public struct PromiseAwaiter : INotifyCompletion {
	6	readonly IPromise m_promise;
	7
	8	public PromiseAwaiter(IPromise promise) {
	9	m_promise = promise;
	10	}
	11
	12	public void OnCompleted (Action continuation) {
	13	if (m_promise != null)
	14	m_promise.On(continuation, PromiseEventType.All);
	15	}
	16
	17	public void GetResult() {
	18	m_promise.Join();
	19	}
	20
	21	public bool IsCompleted {
	22	get {
	23	return m_promise.IsResolved;
	24	}
	25	}
	26	}
	27	}
	28

Implab/PromiseAwaiterT.cs created 644 +28 0

@@ -0,0 +1,28
	1	using System;
	2	using System.Runtime.CompilerServices;
	3
	4	namespace Implab {
	5	public struct PromiseAwaiter<T> : INotifyCompletion {
	6	readonly IPromise<T> m_promise;
	7
	8	public PromiseAwaiter(IPromise<T> promise) {
	9	m_promise = promise;
	10	}
	11
	12	public void OnCompleted (Action continuation) {
	13	if (m_promise != null)
	14	m_promise.On(continuation, PromiseEventType.All);
	15	}
	16
	17	public T GetResult() {
	18	return m_promise.Join();
	19	}
	20
	21	public bool IsCompleted {
	22	get {
	23	return m_promise.IsResolved;
	24	}
	25	}
	26	}
	27	}
	28

Implab.Fx/Implab.Fx.csproj +1 0

             <?xml version="1.0" encoding="utf-8"?>
             <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
               <PropertyGroup>
                 <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
                 <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
                 <ProductVersion>8.0.30703</ProductVersion>
                 <SchemaVersion>2.0</SchemaVersion>
                 <ProjectGuid>{06E706F8-6881-43EB-927E-FFC503AF6ABC}</ProjectGuid>
                 <OutputType>Library</OutputType>
                 <AppDesignerFolder>Properties</AppDesignerFolder>
                 <RootNamespace>Implab.Fx</RootNamespace>
                 <AssemblyName>Implab.Fx</AssemblyName>
                 <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
                 <FileAlignment>512</FileAlignment>
+                <ReleaseVersion>0.2</ReleaseVersion>
               </PropertyGroup>
               <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
                 <DebugSymbols>true</DebugSymbols>
                 <DebugType>full</DebugType>
                 <Optimize>false</Optimize>
                 <OutputPath>bin\Debug\</OutputPath>
                 <DefineConstants>DEBUG;TRACE</DefineConstants>
                 <ErrorReport>prompt</ErrorReport>
                 <WarningLevel>4</WarningLevel>
               </PropertyGroup>
               <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
                 <DebugType>pdbonly</DebugType>
                 <Optimize>true</Optimize>
                 <OutputPath>bin\Release\</OutputPath>
                 <DefineConstants>TRACE</DefineConstants>
                 <ErrorReport>prompt</ErrorReport>
                 <WarningLevel>4</WarningLevel>
               </PropertyGroup>
               <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug 4.5|AnyCPU' ">
                 <DebugSymbols>true</DebugSymbols>
                 <DebugType>full</DebugType>
                 <Optimize>false</Optimize>
                 <OutputPath>bin\Debug\</OutputPath>
                 <DefineConstants>DEBUG;TRACE</DefineConstants>
                 <ErrorReport>prompt</ErrorReport>
                 <WarningLevel>4</WarningLevel>
               </PropertyGroup>
               <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release 4.5|AnyCPU' ">
                 <DebugType>pdbonly</DebugType>
                 <Optimize>true</Optimize>
                 <OutputPath>bin\Release\</OutputPath>
                 <DefineConstants>TRACE</DefineConstants>
                 <ErrorReport>prompt</ErrorReport>
                 <WarningLevel>4</WarningLevel>
               </PropertyGroup>
               <ItemGroup>
                 <Reference Include="System" />
                 <Reference Include="System.Core" />
                 <Reference Include="System.Drawing" />
                 <Reference Include="System.Windows.Forms" />
                 <Reference Include="System.Xml.Linq" />
                 <Reference Include="System.Data.DataSetExtensions" />
                 <Reference Include="Microsoft.CSharp" />
                 <Reference Include="System.Data" />
                 <Reference Include="System.Xml" />
               </ItemGroup>
               <ItemGroup>
                 <Compile Include="Animation.cs" />
                 <Compile Include="AnimationHelpers.cs" />
                 <Compile Include="PromiseHelpers.cs" />
                 <Compile Include="Properties\AssemblyInfo.cs" />
                 <Compile Include="ControlBoundPromise.cs" />
               </ItemGroup>
               <ItemGroup>
                 <ProjectReference Include="..\Implab\Implab.csproj">
                   <Project>{F550F1F8-8746-4AD0-9614-855F4C4B7F05}</Project>
                   <Name>Implab</Name>
                 </ProjectReference>
               </ItemGroup>
               <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
               <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
                    Other similar extension points exist, see Microsoft.Common.targets.
               <Target Name="BeforeBuild">
               </Target>
               <Target Name="AfterBuild">
               </Target>
               -->
             </Project>

Implab.Test/AsyncTests.cs +13 0

             using System;
             using System.Reflection;
             using System.Threading;
             using Implab.Parallels;
             #if MONO
             using NUnit.Framework;
             using TestClassAttribute = NUnit.Framework.TestFixtureAttribute;
             using TestMethodAttribute = NUnit.Framework.TestAttribute;
             #else
             using Microsoft.VisualStudio.TestTools.UnitTesting;
             #endif
             namespace Implab.Test {
                 [TestClass]
                 public class AsyncTests {
                     [TestMethod]
                     public void ResolveTest() {
                         int res = -1;
                         var p = new Promise<int>();
                         p.Then(x => res = x);
                         p.Resolve(100);
                         Assert.AreEqual(100, res);
                     }
                     [TestMethod]
                     public void RejectTest() {
                         int res = -1;
                         Exception err = null;
                         var p = new Promise<int>();
                         p.Then(
                             x => res = x,
                             e => {
                                 err = e;
                                 return -2;
                             }
                         );
                         p.Reject(new ApplicationException("error"));
                         Assert.AreEqual(res, -1);
                         Assert.AreEqual(err.Message, "error");
                     }
                     [TestMethod]
                     public void CancelExceptionTest() {
                         var p = new Promise<bool>();
                         p.CancelOperation(null);
                         var p2 = p.Then(x => x, null, reason => {
                             throw new ApplicationException("CANCELLED");
                         });
                         try {
                             p2.Join();
                             Assert.Fail();
                         } catch (ApplicationException err) {
                             Assert.AreEqual("CANCELLED", err.InnerException.Message);
                         }
                     }
                     [TestMethod]
                     public void ContinueOnCancelTest() {
                         var p = new Promise<bool>();
                         p.CancelOperation(null);
                         var p2 = p
                             .Then(x => x, null, reason => {
                                 throw new ApplicationException("CANCELLED");
                             })
                             .Then(x => x, e => true);
                         Assert.AreEqual(true, p2.Join());
                     }
                     [TestMethod]
                     public void JoinSuccessTest() {
                         var p = new Promise<int>();
                         p.Resolve(100);
                         Assert.AreEqual(p.Join(), 100);
                     }
                     [TestMethod]
                     public void JoinFailTest() {
                         var p = new Promise<int>();
                         p.Reject(new ApplicationException("failed"));
                         try {
                             p.Join();
                             throw new ApplicationException("WRONG!");
                         } catch (TargetInvocationException err) {
                             Assert.AreEqual(err.InnerException.Message, "failed");
                         } catch {
                             Assert.Fail("Got wrong excaption");
                         }
                     }
                     [TestMethod]
                     public void MapTest() {
                         var p = new Promise<int>();
                         var p2 = p.Then(x => x.ToString());
                         p.Resolve(100);
                         Assert.AreEqual(p2.Join(), "100");
                     }
                     [TestMethod]
                     public void FixErrorTest() {
                         var p = new Promise<int>();
                         var p2 = p.Then(x => x, e => 101);
                         p.Reject(new Exception());
                         Assert.AreEqual(p2.Join(), 101);
                     }
                     [TestMethod]
                     public void ChainTest() {
                         var p1 = new Promise<int>();
                         var p3 = p1.Chain(x => {
                             var p2 = new Promise<string>();
                             p2.Resolve(x.ToString());
                             return p2;
                         });
                         p1.Resolve(100);
                         Assert.AreEqual(p3.Join(), "100");
                     }
                     [TestMethod]
                     public void ChainFailTest() {
                         var p1 = new Promise<int>();
                         var p3 = p1.Chain(x => {
                             var p2 = new Promise<string>();
                             p2.Reject(new Exception("DIE!!!"));
                             return p2;
                         });
                         p1.Resolve(100);
                         Assert.IsTrue(p3.IsResolved);
                     }
                     [TestMethod]
                     public void PoolTest() {
                         var pid = Thread.CurrentThread.ManagedThreadId;
                         var p = AsyncPool.Invoke(() => Thread.CurrentThread.ManagedThreadId);
                         Assert.AreNotEqual(pid, p.Join());
                     }
                     [TestMethod]
                     public void WorkerPoolSizeTest() {
                         var pool = new WorkerPool(5, 10, 1);
                         Assert.AreEqual(5, pool.PoolSize);
                         pool.Invoke(() => { Thread.Sleep(100000000); return 10; });
                         pool.Invoke(() => { Thread.Sleep(100000000); return 10; });
                         pool.Invoke(() => { Thread.Sleep(100000000); return 10; });
                         Assert.AreEqual(5, pool.PoolSize);
                         for (int i = 0; i < 100; i++)
                             pool.Invoke(() => { Thread.Sleep(100000000); return 10; });
                         Thread.Sleep(200);
                         Assert.AreEqual(10, pool.PoolSize);
                         pool.Dispose();
                     }
                     [TestMethod]
                     public void WorkerPoolCorrectTest() {
                         var pool = new WorkerPool(0,1000,100);
                         const int iterations = 1000;
                         int pending = iterations;
                         var stop = new ManualResetEvent(false);
                         var count = 0;
                         for (int i = 0; i < iterations; i++) {
                             pool
                                 .Invoke(() => 1)
                                 .Then(x => Interlocked.Add(ref count, x))
                                 .Then(x => Math.Log10(x))
                                 .On(() => {
                                     Interlocked.Decrement(ref pending);
                                     if (pending == 0)
                                         stop.Set();
                                 }, PromiseEventType.All);
                         }
                         stop.WaitOne();
                         Assert.AreEqual(iterations, count);
                         Console.WriteLine("Max threads: {0}", pool.MaxRunningThreads);
                         pool.Dispose();
                     }
                     [TestMethod]
                     public void WorkerPoolDisposeTest() {
                         var pool = new WorkerPool(5, 20);
                         Assert.AreEqual(5, pool.PoolSize);
                         pool.Dispose();
                         Thread.Sleep(500);
                         Assert.AreEqual(0, pool.PoolSize);
                         pool.Dispose();
                     }
                     [TestMethod]
                     public void MTQueueTest() {
                         var queue = new MTQueue<int>();
                         int res;
                         queue.Enqueue(10);
                         Assert.IsTrue(queue.TryDequeue(out res));
                         Assert.AreEqual(10, res);
                         Assert.IsFalse(queue.TryDequeue(out res));
                         for (int i = 0; i < 1000; i++)
                             queue.Enqueue(i);
                         for (int i = 0; i < 1000; i++) {
                             queue.TryDequeue(out res);
                             Assert.AreEqual(i, res);
                         }
                         int writers = 0;
                         int readers = 0;
                         var stop = new ManualResetEvent(false);
                         int total = 0;
                         const int itemsPerWriter = 10000;
                         const int writersCount = 10;
                         for (int i = 0; i < writersCount; i++) {
                             Interlocked.Increment(ref writers);
                             AsyncPool
                                 .RunThread(() => {
                                     for (int ii = 0; ii < itemsPerWriter; ii++) {
                                         queue.Enqueue(1);
                                     }
                                     return 1;
                                 })
                                 .On(() => Interlocked.Decrement(ref writers), PromiseEventType.All);
                         }
                         for (int i = 0; i < 10; i++) {
                             Interlocked.Increment(ref readers);
                             AsyncPool
                                 .RunThread(() => {
                                     int t;
                                     do {
                                         while (queue.TryDequeue(out t))
                                             Interlocked.Add(ref total, t);
                                     } while (writers > 0);
                                     return 1;
                                 })
                                 .On(() => {
                                     Interlocked.Decrement(ref readers);
                                     if (readers == 0)
                                         stop.Set();
                                 }, PromiseEventType.All);
                         }
                         stop.WaitOne();
                         Assert.AreEqual(100000, total);
                     }
                     [TestMethod]
                     public void AsyncQueueTest() {
                         var queue = new AsyncQueue<int>();
                         int res;
                         queue.Enqueue(10);
                         Assert.IsTrue(queue.TryDequeue(out res));
                         Assert.AreEqual(10, res);
                         Assert.IsFalse(queue.TryDequeue(out res));
                         for (int i = 0; i < 1000; i++)
                             queue.Enqueue(i);
                         for (int i = 0; i < 1000; i++) {
                             queue.TryDequeue(out res);
                             Assert.AreEqual(i, res);
                         }
                         const int count = 10000000;
                         int res1 = 0, res2 = 0;
                         var t1 = Environment.TickCount;
                         AsyncPool.RunThread(
                             () => {
                                 for (var i = 0; i < count; i++)
                                     queue.Enqueue(1);
                                 Console.WriteLine("done writer #1: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 for (var i = 0; i < count; i++)
                                     queue.Enqueue(2);
                                 Console.WriteLine("done writer #2: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 int temp;
                                 int i = 0;
                                 while (i < count)
                                     if (queue.TryDequeue(out temp)) {
                                         i++;
                                         res1 += temp;
                                     }
                                 Console.WriteLine("done reader #1: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 int temp;
                                 int i = 0;
                                 while (i < count)
                                     if (queue.TryDequeue(out temp)) {
                                         i++;
                                         res2 += temp;
                                     }
                                 Console.WriteLine("done reader #2: {0} ms", Environment.TickCount - t1);
                             }
                         )
                             .Bundle()
                             .Join();
                         Assert.AreEqual(count * 3, res1 + res2);
                         Console.WriteLine(
                             "done: {0} ms, summ#1: {1}, summ#2: {2}, total: {3}, count: {4}",
                             Environment.TickCount - t1,
                             res1,
                             res2,
                             res1 + res2,
                             count
                         );
                     }
                     [TestMethod]
                     public void AsyncQueueBatchTest() {
                         var queue = new AsyncQueue<int>();
                         const int wBatch = 29;
                         const int wCount = 400000;
                         const int total = wBatch * wCount * 2;
                         const int summ = wBatch * wCount * 3;
                         int r1 = 0, r2 = 0;
                         const int rBatch = 111;
                         int read = 0;
                         var t1 = Environment.TickCount;
                         AsyncPool.RunThread(
                             () => {
                                 var buffer = new int[wBatch];
                                 for(int i = 0; i<wBatch; i++)
                                     buffer[i] = 1;
                                 for(int i =0; i < wCount; i++)
                                     queue.EnqueueRange(buffer,0,wBatch);
                                 Console.WriteLine("done writer #1: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 var buffer = new int[wBatch];
                                 for(int i = 0; i<wBatch; i++)
                                     buffer[i] = 2;
                                 for(int i =0; i < wCount; i++)
                                     queue.EnqueueRange(buffer,0,wBatch);
                                 Console.WriteLine("done writer #2: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 var buffer = new int[rBatch];
                                 while(read < total) {
                                     int actual;
                                     if (queue.TryDequeueRange(buffer,0,rBatch,out actual)) {
                                         for(int i=0; i< actual; i++)
                                             r1 += buffer[i];
                                         Interlocked.Add(ref read, actual);
                                     }
                                 }
                                 Console.WriteLine("done reader #1: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 var buffer = new int[rBatch];
                                 while(read < total) {
                                     int actual;
                                     if (queue.TryDequeueRange(buffer,0,rBatch,out actual)) {
                                         for(int i=0; i< actual; i++)
                                             r2 += buffer[i];
                                         Interlocked.Add(ref read, actual);
                                     }
                                 }
                                 Console.WriteLine("done reader #2: {0} ms", Environment.TickCount - t1);
                             }
                         )
                             .Bundle()
                             .Join();
                         Assert.AreEqual(summ , r1 + r2);
                         Console.WriteLine(
                             "done: {0} ms, summ#1: {1}, summ#2: {2}, total: {3}, count: {4}",
                             Environment.TickCount - t1,
                             r1,
                             r2,
                             r1 + r2,
                             total
                         );
                     }
                     [TestMethod]
                     public void AsyncQueueChunkDequeueTest() {
                         var queue = new AsyncQueue<int>();
                         const int wBatch = 31;
                         const int wCount = 200000;
                         const int total = wBatch * wCount * 3;
                         const int summ = wBatch * wCount * 6;
                         int r1 = 0, r2 = 0;
                         const int rBatch = 1024;
                         int read = 0;
                         var t1 = Environment.TickCount;
                         AsyncPool.RunThread(
                             () => {
                                 var buffer = new int[wBatch];
                                 for(int i = 0; i<wBatch; i++)
                                     buffer[i] = 1;
                                 for(int i =0; i < wCount; i++)
                                     queue.EnqueueRange(buffer,0,wBatch);
                                 Console.WriteLine("done writer #1: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 var buffer = new int[wBatch];
                                 for(int i = 0; i<wBatch; i++)
                                     buffer[i] = 2;
                                 for(int i =0; i < wCount; i++)
                                     queue.EnqueueRange(buffer,0,wBatch);
                                 Console.WriteLine("done writer #2: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 var buffer = new int[wBatch];
                                 for(int i = 0; i<wBatch; i++)
                                     buffer[i] = 3;
                                 for(int i =0; i < wCount; i++)
                                     queue.EnqueueRange(buffer,0,wBatch);
                                 Console.WriteLine("done writer #3: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 var buffer = new int[rBatch];
                                 int count = 1;
                                 double avgchunk = 0;
                                 while(read < total) {
                                     int actual;
                                     if (queue.TryDequeueChunk(buffer,0,rBatch,out actual)) {
                                         for(int i=0; i< actual; i++)
                                             r2 += buffer[i];
                                         Interlocked.Add(ref read, actual);
                                         avgchunk = avgchunk*(count-1)/count + actual/(double)count;
                                         count ++;
                                     }
                                 }
                                 Console.WriteLine("done reader #2: {0} ms, avg chunk size: {1}", Environment.TickCount - t1, avgchunk);
                             }
                         )
                             .Bundle()
                             .Join();
                         Assert.AreEqual(summ , r1 + r2);
                         Console.WriteLine(
                             "done: {0} ms, summ#1: {1}, summ#2: {2}, total: {3}, count: {4}",
                             Environment.TickCount - t1,
                             r1,
                             r2,
                             r1 + r2,
                             total
                         );
                     }
                     [TestMethod]
                     public void AsyncQueueDrainTest() {
                         var queue = new AsyncQueue<int>();
                         const int wBatch = 11;
                         const int wCount = 200000;
                         const int total = wBatch * wCount * 3;
                         const int summ = wBatch * wCount * 3;
                         int r1 = 0, r2 = 0;
                         const int rBatch = 11;
                         int read = 0;
                         var t1 = Environment.TickCount;
                         AsyncPool.RunThread(
                             () => {
                                 var buffer = new int[wBatch];
                                 for(int i = 0; i<wBatch; i++)
                                     buffer[i] = 1;
                                 for(int i =0; i < wCount; i++)
                                     queue.EnqueueRange(buffer,0,wBatch);
                                 Console.WriteLine("done writer #1: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 for(int i =0; i < wCount * wBatch; i++)
                                     queue.Enqueue(1);
                                 Console.WriteLine("done writer #2: {0} ms", Environment.TickCount - t1);
                             },
                             () => {
                                 var buffer = new int[wBatch];
                                 for(int i = 0; i<wBatch; i++)
                                     buffer[i] = 1;
                                 for(int i =0; i < wCount; i++)
                                     queue.EnqueueRange(buffer,0,wBatch);
                                 Console.WriteLine("done writer #3: {0} ms", Environment.TickCount - t1);
                             },
                             /*() => {
                                 int temp;
                                 int count = 0;
                                 while (read < total)
                                     if (queue.TryDequeue(out temp)) {
                                         count++;
                                         r1 += temp;
                                         Interlocked.Increment(ref read);
                                     }
                                 Console.WriteLine("done reader #1: {0} ms, {1} count", Environment.TickCount - t1, count);
                             },*/
                             /*() => {
                                 var buffer = new int[rBatch];
                                 var count = 0;
                                 while(read < total) {
                                     int actual;
                                     if (queue.TryDequeueRange(buffer,0,rBatch,out actual)) {
                                         for(int i=0; i< actual; i++)
                                             r1 += buffer[i];
                                         Interlocked.Add(ref read, actual);
                                         count += actual;
                                     }
                                 }
                                 Console.WriteLine("done reader #1: {0} ms, {1} items", Environment.TickCount - t1, count);
                             },*/
                             () => {
                                 var count = 0;
                                 while(read < total) {
                                     var buffer = queue.Drain();
                                     for(int i=0; i< buffer.Length; i++)
                                         r1 += buffer[i];
                                         Interlocked.Add(ref read, buffer.Length);
                                     count += buffer.Length;
                                 }
                                 Console.WriteLine("done reader #1: {0} ms, {1} items", Environment.TickCount - t1, count);
                             },
                             () => {
                                 var count = 0;
                                 while(read < total) {
                                     var buffer = queue.Drain();
                                     for(int i=0; i< buffer.Length; i++)
                                         r2 += buffer[i];
                                     Interlocked.Add(ref read, buffer.Length);
                                     count += buffer.Length;
                                 }
                                 Console.WriteLine("done reader #2: {0} ms, {1} items", Environment.TickCount - t1, count);
                             }
                         )
                             .Bundle()
                             .Join();
                         Assert.AreEqual(summ , r1 + r2);
                         Console.WriteLine(
                             "done: {0} ms, summ#1: {1}, summ#2: {2}, total: {3}, count: {4}",
                             Environment.TickCount - t1,
                             r1,
                             r2,
                             r1 + r2,
                             total
                         );
                     }
                     [TestMethod]
                     public void ParallelMapTest() {
                         const int count = 100000;
                         var args = new double[count];
                         var rand = new Random();
                         for (int i = 0; i < count; i++)
                             args[i] = rand.NextDouble();
                         var t = Environment.TickCount;
                         var res = args.ParallelMap(x => Math.Sin(x*x), 4).Join();
                         Console.WriteLine("Map complete in {0} ms", Environment.TickCount - t);
                         t = Environment.TickCount;
                         for (int i = 0; i < count; i++)
                             Assert.AreEqual(Math.Sin(args[i] * args[i]), res[i]);
                         Console.WriteLine("Verified in {0} ms", Environment.TickCount - t);
                     }
                     [TestMethod]
                     public void ChainedMapTest() {
                         using (var pool = new WorkerPool()) {
                             const int count = 10000;
                             var args = new double[count];
                             var rand = new Random();
                             for (int i = 0; i < count; i++)
                                 args[i] = rand.NextDouble();
                             var t = Environment.TickCount;
                             var res = args
                                 .ChainedMap(
                                     // Analysis disable once AccessToDisposedClosure
                                     x => pool.Invoke(
                                         () => Math.Sin(x * x)
                                     ),
                                 )
                                 .Join();
                             Console.WriteLine("Map complete in {0} ms", Environment.TickCount - t);
                             t = Environment.TickCount;
                             for (int i = 0; i < count; i++)
                                 Assert.AreEqual(Math.Sin(args[i] * args[i]), res[i]);
                             Console.WriteLine("Verified in {0} ms", Environment.TickCount - t);
                             Console.WriteLine("Max workers: {0}", pool.MaxRunningThreads);
                         }
                     }
                     [TestMethod]
                     public void ParallelForEachTest() {
                         const int count = 100000;
                         var args = new int[count];
                         var rand = new Random();
                         for (int i = 0; i < count; i++)
                             args[i] = (int)(rand.NextDouble() * 100);
                         int result = 0;
                         var t = Environment.TickCount;
                         args.ParallelForEach(x => Interlocked.Add(ref result, x), 4).Join();
                         Console.WriteLine("Iteration complete in {0} ms, result: {1}", Environment.TickCount - t, result);
                         int result2 = 0;
                         t = Environment.TickCount;
                         for (int i = 0; i < count; i++)
                             result2 += args[i];
                         Assert.AreEqual(result2, result);
                         Console.WriteLine("Verified in {0} ms", Environment.TickCount - t);
                     }
                     [TestMethod]
                     public void ComplexCase1Test() {
                         var flags = new bool[3];
                         // op1 (aync 200ms) => op2 (async 200ms) => op3 (sync map)
                         var step1 = PromiseHelper
                             .Sleep(200, "Alan")
                             .On(() => flags[0] = true, PromiseEventType.Cancelled);
                         var p = step1
                             .Chain(x =>
                                 PromiseHelper
                                     .Sleep(200, "Hi, " + x)
                                     .Then(y => y)
                                     .On(() => flags[1] = true, PromiseEventType.Cancelled)
                             )
                             .On(() => flags[2] = true, PromiseEventType.Cancelled);
                         step1.Join();
                         p.Cancel();
                         try {
                             Assert.AreEqual(p.Join(), "Hi, Alan");
                             Assert.Fail("Shouldn't get here");
                         } catch (OperationCanceledException) {
                         }
                         Assert.IsFalse(flags[0]);
                         Assert.IsTrue(flags[1]);
                         Assert.IsTrue(flags[2]);
                     }
                     [TestMethod]
                     public void ChainedCancel1Test() {
                         // при отмене сцепленной асинхронной операции все обещание должно
                         // завершаться ошибкой OperationCanceledException
                         var p = PromiseHelper
                             .Sleep(1, "Hi, HAL!")
                             .Then(x => {
                                 // запускаем две асинхронные операции
                                 var result = PromiseHelper.Sleep(1000, "HEM ENABLED!!!");
                                 // вторая операция отменяет первую до завершения
                                 PromiseHelper
                                     .Sleep(100, "HAL, STOP!")
                                     .Then(result.Cancel);
                                 return result;
                             });
                         try {
                             p.Join();
                         } catch (TargetInvocationException err) {
                             Assert.IsTrue(err.InnerException is OperationCanceledException);
                         }
                     }
                     [TestMethod]
                     public void ChainedCancel2Test() {
                         // при отмене цепочки обещаний, вложенные операции также должны отменяться
                         var pSurvive = new Promise<bool>();
                         var hemStarted = new Signal();
                         var p = PromiseHelper
                             .Sleep(1, "Hi, HAL!")
                             .Chain(() => {
                                 hemStarted.Set();
                                 // запускаем две асинхронные операции
                                 var result = PromiseHelper
                                     .Sleep(2000, "HEM ENABLED!!!")
                                     .Then(() => pSurvive.Resolve(false));
                                 result
                                     .On(() => pSurvive.Resolve(true), PromiseEventType.Cancelled);
                                 return result;
                             });
                         hemStarted.Wait();
                         p.Cancel();
                         try {
                             p.Join();
                             Assert.Fail();
                         } catch (OperationCanceledException) {
                         }
                         Assert.IsTrue(pSurvive.Join());
                     }
                     [TestMethod]
                     public void SharedLockTest() {
                         var l = new SharedLock();
                         int shared = 0;
                         int exclusive = 0;
                         var s1 = new Signal();
                         var log = new AsyncQueue<string>();
                         try {
                             AsyncPool.RunThread(
                                 () => {
                                     log.Enqueue("Reader #1 started");
                                     try {
                                         l.LockShared();
                                         log.Enqueue("Reader #1 lock got");
                                         if (Interlocked.Increment(ref shared) == 2)
                                             s1.Set();
                                         s1.Wait();
                                         log.Enqueue("Reader #1 finished");
                                         Interlocked.Decrement(ref shared);
                                     } finally {
                                         l.Release();
                                         log.Enqueue("Reader #1 lock released");
                                     }
                                 },
                                 () => {
                                     log.Enqueue("Reader #2 started");
                                     try {
                                         l.LockShared();
                                         log.Enqueue("Reader #2 lock got");
                                         if (Interlocked.Increment(ref shared) == 2)
                                             s1.Set();
                                         s1.Wait();
                                         log.Enqueue("Reader #2 upgrading to writer");
                                         Interlocked.Decrement(ref shared);
                                         l.Upgrade();
                                         log.Enqueue("Reader #2 upgraded");
                                         Assert.AreEqual(1, Interlocked.Increment(ref exclusive));
                                         Assert.AreEqual(0, shared);
                                         log.Enqueue("Reader #2 finished");
                                         Interlocked.Decrement(ref exclusive);
                                     } finally {
                                         l.Release();
                                         log.Enqueue("Reader #2 lock released");
                                     }
                                 },
                                 () => {
                                     log.Enqueue("Writer #1 started");
                                     try {
                                         l.LockExclusive();
                                         log.Enqueue("Writer #1 got the lock");
                                         Assert.AreEqual(1, Interlocked.Increment(ref exclusive));
                                         Interlocked.Decrement(ref exclusive);
                                         log.Enqueue("Writer #1 is finished");
                                     } finally {
                                         l.Release();
                                         log.Enqueue("Writer #1 lock released");
                                     }
                                 }
                             ).Bundle().Join(1000);
                             log.Enqueue("Done");
                         } catch(Exception error) {
                             log.Enqueue(error.Message);
                             throw;
                         } finally {
                             foreach (var m in log)
                                 Console.WriteLine(m);
                         }
                     }
+                    #if NET_4_5
+                    [TestMethod]
+                    public async void TaskInteropTest() {
+                        var promise = new Promise<int>();
+                        promise.Resolve(10);
+                        var res = await promise;
+                        Assert.AreEqual(10, res);
+                    }
+                    #endif
                 }
             }

Implab.Test/Implab.Test.mono.csproj +1 0

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Implab.mono.sln +2 -1

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             		$34.IncludeInstanceMembers = True
             		$34.IncludeStaticEntities = True
+            		version = 0.2
+            		StartupItem = MonoPlay\MonoPlay.csproj
             	EndGlobalSection
             	GlobalSection(TestCaseManagementSettings) = postSolution
             		CategoryFile = Implab.vsmdi
             	EndGlobalSection
             	GlobalSection(SolutionProperties) = preSolution
             		HideSolutionNode = FALSE
             	EndGlobalSection
             EndGlobal

Implab/IPromise.cs 0 -40

             using System;
             using System.Collections.Generic;
             using System.Linq;
             using System.Text;
             namespace Implab {
                 public interface IPromise: ICancellable {
                     /// <summary>
                     /// Тип результата, получаемого через данное обещание.
                     /// </summary>
                     Type PromiseType { get; }
                     /// <summary>
                     /// Обещание является выполненым, либо успешно, либо с ошибкой, либо отменено.
                     /// </summary>
                     bool IsResolved { get; }
                     /// <summary>
                     /// Обещание было отменено.
                     /// </summary>
                     bool IsCancelled { get; }
                     /// <summary>
                     /// Исключение возникшее в результате выполнения обещания, либо причина отмены.
                     /// </summary>
                     Exception Error { get; }
                     /// <summary>
-                    /// Creates a new promise dependend on the current one and resolved on
-                    /// executing the specified handlers.
-                    /// </summary>
-                    /// <param name="success">The handler called on the successful promise completion.</param>
-                    /// <param name="error">The handler is called if an error while completing the promise occurred.</param>
-                    /// <param name="cancel">The handler is called in case of promise cancellation.</param>
-                    /// <returns>The newly created dependant promise.</returns>
-                    /// <remarks>
-                    /// <para>
-                    /// If the success handler is specified the dependend promise will be resolved after the handler is
-                    /// executed and the dependent promise will be linked to the current one, i.e. the cancellation
-                    /// of the dependent property will lead to the cancellation of the current promise. If the
-                    /// success handler isn't specified the dependent promise will not be linked to and
-                    /// will not be resolved after the successfull resolution of the current one.
-                    /// </para>
-                    /// <para>
-                    /// When the error handler is specified, the exception raised during the current promise completion
-                    /// will be passed to it as the parameter. If the error handler returns without raising an
-                    /// exception then the dependant promise will be resolved successfully, otherwise the exception
-                    /// raised by the handler will be transmitted to the dependent promise. If the handler wants
-                    /// to passthrough the original exception it needs to wrap the exception with
-                    /// the <see cref="PromiseTransientException"/>. The handler may raise <see cref="OperationCanceledException"/>
-                    /// to cancel the dependant promise, the innner exception specifies the reason why the promise
-                    /// is canceled.
-                    /// </para>
-                    /// <para>
-                    /// If the cancelation handler is specified and the current promise is cancelled then the dependent
-                    /// promise will be resolved after the handler is executed. If the cancelation handler raises the
-                    /// exception it will be passed to the dependent promise.
-                    /// </para>
-                    /// </remarks>
-                    /* IPromise Then(Action success, Action<Exception> error, Action<Exception> cancel);
-                    IPromise Then(Action success, Action<Exception> error);
-                    IPromise Then(Action success);
-                    IPromise Chain(Func<IPromise> chained, Func<Exception, IPromise> error, Func<Exception, IPromise> cancel);
-                    IPromise Chain(Func<IPromise> chained, Func<Exception, IPromise> error);
-                    IPromise Chain(Func<IPromise> chained);*/
-                    /// <summary>
                     /// Adds specified listeners to the current promise.
                     /// </summary>
                     /// <param name="success">The handler called on the successful promise completion.</param>
                     /// <param name="error">The handler is called if an error while completing the promise occurred.</param>
                     /// <param name="cancel">The handler is called in case of promise cancellation.</param>
                     /// <returns>The current promise.</returns>
                     IPromise On(Action success, Action<Exception> error, Action<Exception> cancel);
                     IPromise On(Action success, Action<Exception> error);
                     IPromise On(Action success);
                     /// <summary>
                     /// Adds specified listeners to the current promise.
                     /// </summary>
                     /// <param name="handler">The handler called on the specified events.</param>
                     /// <param name = "events">The combination of flags denoting the events for which the
                     /// handler shoud be called.</param>
                     /// <returns>The current promise.</returns>
                     IPromise On(Action handler, PromiseEventType events);
                     /// <summary>
                     /// Преобразует результат обещания к заданному типу и возвращает новое обещание.
                     /// </summary>
                     IPromise<T> Cast<T>();
                     /// <summary>
                     /// Синхронизирует текущий поток с обещанием.
                     /// </summary>
                     void Join();
                     /// <summary>
                     /// Синхронизирует текущий поток с обещанием.
                     /// </summary>
                     /// <param name="timeout">Время ожидания, по его истечению возникнет исключение.</param>
                     /// <exception cref="TimeoutException">Превышено время ожидания.</exception>
                     void Join(int timeout);
                 }
             }

Implab/Implab.csproj +7 0

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                 <OutputType>Library</OutputType>
                 <RootNamespace>Implab</RootNamespace>
                 <AssemblyName>Implab</AssemblyName>
+                <ProductVersion>8.0.30703</ProductVersion>
+                <SchemaVersion>2.0</SchemaVersion>
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+                <Reference Include="mscorlib" />
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+                <Compile Include="PromiseAwaiterT.cs" />
+                <Compile Include="PromiseAwaiter.cs" />
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Implab/PromiseExtensions.cs +2 -5

             using System.Threading;
             using System;
             using Implab.Diagnostics;
             using System.Collections.Generic;
             #if NET_4_5
             using System.Threading.Tasks;
             #endif
             namespace Implab {
                 public static class PromiseExtensions {
                     public static IPromise<T> DispatchToCurrentContext<T>(this IPromise<T> that) {
                         Safe.ArgumentNotNull(that, "that");
                         var context = SynchronizationContext.Current;
                         if (context == null)
                             return that;
                         var p = new SyncContextPromise<T>(context);
                         p.On(that.Cancel, PromiseEventType.Cancelled);
                         that.On(
                             p.Resolve,
                             p.Reject,
                             p.Cancel
                         );
                         return p;
                     }
                     public static IPromise<T> DispatchToContext<T>(this IPromise<T> that, SynchronizationContext context) {
                         Safe.ArgumentNotNull(that, "that");
                         Safe.ArgumentNotNull(context, "context");
                         var p = new SyncContextPromise<T>(context);
                         p.On(that.Cancel, PromiseEventType.Cancelled);
                         that.On(
                             p.Resolve,
                             p.Reject,
                             p.Cancel
                         );
                         return p;
                     }
                     /// <summary>
                     /// Ensures the dispatched.
                     /// </summary>
                     /// <returns>The dispatched.</returns>
                     /// <param name="that">That.</param>
                     /// <param name="head">Head.</param>
                     /// <param name="cleanup">Cleanup.</param>
                     /// <typeparam name="TPromise">The 1st type parameter.</typeparam>
                     /// <typeparam name="T">The 2nd type parameter.</typeparam>
                     public static TPromise EnsureDispatched<TPromise,T>(this TPromise that, IPromise<T> head, Action<T> cleanup) where TPromise : IPromise{
                         Safe.ArgumentNotNull(that, "that");
                         Safe.ArgumentNotNull(head, "head");
                         that.On(() => head.On(cleanup), PromiseEventType.Cancelled);
                         return that;
                     }
                     public static AsyncCallback AsyncCallback<T>(this Promise<T> that, Func<IAsyncResult,T> callback) {
                         Safe.ArgumentNotNull(that, "that");
                         Safe.ArgumentNotNull(callback, "callback");
                         var op = TraceContext.Instance.CurrentOperation;
                         return ar => {
                             TraceContext.Instance.EnterLogicalOperation(op,false);
                             try {
                                 that.Resolve(callback(ar));
                             } catch (Exception err) {
                                 that.Reject(err);
                             } finally {
                                 TraceContext.Instance.Leave();
                             }
                         };
                     }
                     static void CancelCallback(object cookie) {
                         ((ICancellable)cookie).Cancel();
                     }
                     /// <summary>
                     /// Cancells promise after the specified timeout is elapsed.
                     /// </summary>
                     /// <param name="that">The promise to cancel on timeout.</param>
                     /// <param name="milliseconds">The timeout in milliseconds.</param>
                     /// <typeparam name="TPromise">The 1st type parameter.</typeparam>
                     public static TPromise Timeout<TPromise>(this TPromise that, int milliseconds) where TPromise : IPromise {
                         Safe.ArgumentNotNull(that, "that");
                         var timer = new Timer(CancelCallback, that, milliseconds, -1);
                         that.On(timer.Dispose, PromiseEventType.All);
                         return that;
                     }
                     public static IPromise Bundle(this ICollection<IPromise> that) {
                         Safe.ArgumentNotNull(that, "that");
                         int count = that.Count;
                         int errors = 0;
                         var medium = new Promise();
                         if (count == 0) {
                             medium.Resolve();
                             return medium;
                         }
                         medium.On(() => {
                             foreach(var p2 in that)
                                 p2.Cancel();
                         }, PromiseEventType.ErrorOrCancel);
                         foreach (var p in that)
                             p.On(
                                 () => {
                                     if (Interlocked.Decrement(ref count) == 0)
                                         medium.Resolve();
                                 },
                                 error => {
                                     if (Interlocked.Increment(ref errors) == 1)
                                         medium.Reject(
                                             new Exception("The dependency promise is failed", error)
                                         );
                                 },
                                 reason => {
                                     if (Interlocked.Increment(ref errors) == 1)
                                         medium.Cancel(
                                             new Exception("The dependency promise is cancelled")
                                         );
                                 }
                             );
                         return medium;
                     }
                     public static IPromise<T[]> Bundle<T>(this ICollection<IPromise<T>> that) {
                         Safe.ArgumentNotNull(that, "that");
                         int count = that.Count;
                         int errors = 0;
                         var medium = new Promise<T[]>();
                         var results = new T[that.Count];
                         medium.On(() => {
                             foreach(var p2 in that)
                                 p2.Cancel();
                         }, PromiseEventType.ErrorOrCancel);
                         int i = 0;
                         foreach (var p in that) {
                             var idx = i;
                             p.On(
                                 x => {
                                     results[idx] = x;
                                     if (Interlocked.Decrement(ref count) == 0)
                                         medium.Resolve(results);
                                 },
                                 error => {
                                     if (Interlocked.Increment(ref errors) == 1)
                                         medium.Reject(
                                             new Exception("The dependency promise is failed", error)
                                         );
                                 },
                                 reason => {
                                     if (Interlocked.Increment(ref errors) == 1)
                                         medium.Cancel(
                                             new Exception("The dependency promise is cancelled", reason)
                                         );
                                 }
                             );
                             i++;
                         }
                         return medium;
                     }
                     public static IPromise Then(this IPromise that, Action success, Action<Exception> error, Action<Exception> cancel) {
                         Safe.ArgumentNotNull(that, "that");
                         var d = new ActionTask(success, error, cancel, false);
                         that.On(d.Resolve, d.Reject, d.CancelOperation);
                         if (success != null)
                             d.CancellationRequested(that.Cancel);
                         return d;
                     }
                     public static IPromise Then(this IPromise that, Action success, Action<Exception> error) {
                         return Then(that, success, error, null);
                     }
                     public static IPromise Then(this IPromise that, Action success) {
                         return Then(that, success, null, null);
                     }
                     public static IPromise<T> Then<T>(this IPromise that, Func<T> success, Func<Exception, T> error, Func<Exception, T> cancel) {
                         Safe.ArgumentNotNull(that, "that");
                         var d = new FuncTask<T>(success, error, cancel, false);
                         that.On(d.Resolve, d.Reject, d.CancelOperation);
                         if (success != null)
                             d.CancellationRequested(that.Cancel);
                         return d;
                     }
                     public static IPromise<T> Then<T>(this IPromise that, Func<T> success, Func<Exception, T> error) {
                         return Then(that, success, error, null);
                     }
                     public static IPromise<T> Then<T>(this IPromise that, Func<T> success) {
                         return Then(that, success, null, null);
                     }
                     public static IPromise<T2> Then<T, T2>(this IPromise<T> that, Func<T, T2> success, Func<Exception, T2> error, Func<Exception, T2> cancel) {
                         Safe.ArgumentNotNull(that, "that");
                         var d = new FuncTask<T,T2>(success, error, cancel, false);
                         that.On(d.Resolve, d.Reject, d.CancelOperation);
                         if (success != null)
                             d.CancellationRequested(that.Cancel);
                         return d;
                     }
                     public static IPromise<T2> Then<T, T2>(this IPromise<T> that, Func<T, T2> success, Func<Exception, T2> error) {
                         return Then(that, success, error, null);
                     }
                     public static IPromise<T2> Then<T, T2>(this IPromise<T> that, Func<T, T2> success) {
                         return Then(that, success, null, null);
                     }
                     #region chain traits
                     public static IPromise Chain(this IPromise that, Func<IPromise> success, Func<Exception,IPromise> error, Func<Exception,IPromise> cancel) {
                         Safe.ArgumentNotNull(that, "that");
                         var d = new ActionChainTask(success, error, cancel, false);
                         that.On(d.Resolve, d.Reject, d.CancelOperation);
                         if (success != null)
                             d.CancellationRequested(that.Cancel);
                         return d;
                     }
                     public static IPromise Chain(this IPromise that, Func<IPromise> success, Func<Exception,IPromise> error) {
                         return Chain(that, success, error, null);
                     }
                     public static IPromise Chain(this IPromise that, Func<IPromise> success) {
                         return Chain(that, success, null, null);
                     }
                     public static IPromise<T> Chain<T>(this IPromise that, Func<IPromise<T>> success, Func<Exception, IPromise<T>> error, Func<Exception, IPromise<T>> cancel) {
                         Safe.ArgumentNotNull(that, "that");
                         var d = new FuncChainTask<T>(success, error, cancel, false);
                         that.On(d.Resolve, d.Reject, d.CancelOperation);
                         if (success != null)
                             d.CancellationRequested(that.Cancel);
                         return d;
                     }
                     public static IPromise<T> Chain<T>(this IPromise that, Func<IPromise<T>> success, Func<Exception, IPromise<T>> error) {
                         return Chain(that, success, error, null);
                     }
                     public static IPromise<T> Chain<T>(this IPromise that, Func<IPromise<T>> success) {
                         return Chain(that, success, null, null);
                     }
                     public static IPromise<T2> Chain<T, T2>(this IPromise<T> that, Func<T, IPromise<T2>> success, Func<Exception, IPromise<T2>> error, Func<Exception, IPromise<T2>> cancel) {
                         Safe.ArgumentNotNull(that, "that");
                         var d = new FuncChainTask<T,T2>(success, error, cancel, false);
                         that.On(d.Resolve, d.Reject, d.CancelOperation);
                         if (success != null)
                             d.CancellationRequested(that.Cancel);
                         return d;
                     }
                     public static IPromise<T2> Chain<T, T2>(this IPromise<T> that, Func<T, IPromise<T2>> success, Func<Exception, IPromise<T2>> error) {
                         return Chain(that, success, error, null);
                     }
                     public static IPromise<T2> Chain<T, T2>(this IPromise<T> that, Func<T, IPromise<T2>> success) {
                         return Chain(that, success, null, null);
                     }
                     #endregion
                     #if NET_4_5
-                    public static Task<T> GetTask<T>(this IPromise<T> that) {
+                    public static PromiseAwaiter<T> GetAwaiter<T>(this IPromise<T> that) {
                         Safe.ArgumentNotNull(that, "that");
-                        var tcs = new TaskCompletionSource<T>();
-                        that.On(tcs.SetResult, tcs.SetException, r => tcs.SetCanceled());
+                        return new PromiseAwaiter<T>(that);
-                        return tcs.Task;
                     }
                     #endif
                 }
             }

MonoPlay/MonoPlay.csproj +1 0

             <?xml version="1.0" encoding="utf-8"?>
             <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
               <PropertyGroup>
                 <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
                 <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
                 <ProductVersion>8.0.30703</ProductVersion>
                 <SchemaVersion>2.0</SchemaVersion>
                 <ProjectGuid>{15DD7123-D504-4627-8B4F-D00C7F04D033}</ProjectGuid>
                 <OutputType>Exe</OutputType>
                 <RootNamespace>MonoPlay</RootNamespace>
                 <AssemblyName>MonoPlay</AssemblyName>
                 <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+                <ReleaseVersion>0.2</ReleaseVersion>
               </PropertyGroup>
               <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
                 <DebugSymbols>true</DebugSymbols>
                 <DebugType>full</DebugType>
                 <Optimize>false</Optimize>
                 <OutputPath>bin\Debug</OutputPath>
                 <DefineConstants>DEBUG;TRACE;</DefineConstants>
                 <ErrorReport>prompt</ErrorReport>
                 <WarningLevel>4</WarningLevel>
                 <ConsolePause>false</ConsolePause>
               </PropertyGroup>
               <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
                 <DebugType>full</DebugType>
                 <Optimize>true</Optimize>
                 <OutputPath>bin\Release</OutputPath>
                 <ErrorReport>prompt</ErrorReport>
                 <WarningLevel>4</WarningLevel>
                 <ConsolePause>false</ConsolePause>
               </PropertyGroup>
               <ItemGroup>
                 <Reference Include="System" />
               </ItemGroup>
               <ItemGroup>
                 <Compile Include="Program.cs" />
                 <Compile Include="Properties\AssemblyInfo.cs" />
               </ItemGroup>
               <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
               <ItemGroup>
                 <ProjectReference Include="..\Implab\Implab.csproj">
                   <Project>{F550F1F8-8746-4AD0-9614-855F4C4B7F05}</Project>
                   <Name>Implab</Name>
                 </ProjectReference>
               </ItemGroup>
             </Project>

MonoPlay/Program.cs +10 -13

             using System;
             using Implab.Diagnostics;
             using Implab.Parallels;
             using Implab;
             using System.Collections.Generic;
             using System.Collections.Concurrent;
             using System.Threading;
             using Implab.JSON;
             using System.IO;
+            using System.Threading.Tasks;
             namespace MonoPlay {
                 class MainClass {
                     public static void Main(string[] args) {
                         if (args == null)
                             throw new ArgumentNullException("args");
                         var t1 = Environment.TickCount;
-                        for(int i =0; i < 1000000; i++)
+                        DoWork().GetAwaiter().GetResult();
-                        using (var tw = new StringWriter()) {
-                            var jw = new JSONWriter(tw);
-                            jw.WriteValue("\r\nhere\tvalue\u0002\u0003");
-                            //Console.WriteLine(tw);
                         var t2 = Environment.TickCount;
                         Console.WriteLine("done: {0} ms, {1:.00} Mb, {2} GC", t2 - t1, GC.GetTotalMemory(false) / (1024*1024), GC.CollectionCount(0) );
                     }
-                    static void DoTest() {
+                    static IPromise<int> DoItem(int x) {
+                        return Promise<int>.FromResult(x + 1);
+                    }
+                    static async Task<int> DoWork() {
+                        var c = 0;
+                        for (int i = 0; i < 10000000; i++)
+                            c = await DoItem(c);
+                        return c;
                     }
                 }
             }

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