public void Run()
{
// The following basic example demonstrates a case in which
// a JoinBlock<T1,T2,T3> object requires multiple data to compute
// a value. This example creates a JoinBlock<T1,T2,T3> object
// that requires two Int32 values and a Char value to perform
// an arithmetic operation.
// Create a JoinBlock<int, int, char> object that requires
// two numbers and an operator.
var joinBlock = new JoinBlock <int, int, char>();
// Post two values to each target of the join.
joinBlock.Target1.Post(3);
joinBlock.Target1.Post(6);
joinBlock.Target2.Post(5);
joinBlock.Target2.Post(4);
joinBlock.Target3.Post('+');
joinBlock.Target3.Post('-');
// Receive each group of values and apply the operator part
// to the number parts.
for (int i = 0; i < 2; i++)
{
var data = joinBlock.Receive();
switch (data.Item3)
{
case '+':
Console.WriteLine("{0} + {1} = {2}",
data.Item1, data.Item2, data.Item1 + data.Item2);
break;
case '-':
Console.WriteLine("{0} - {1} = {2}",
data.Item1, data.Item2, data.Item1 - data.Item2);
break;
default:
Console.WriteLine("Unknown operator '{0}'.", data.Item3);
break;
}
}
/* Output:
* 3 + 5 = 8
* 6 - 4 = 2
*/
}
static void ShowJoinBlock()
{
// <snippet8>
// Create a JoinBlock<int, int, char> object that requires
// two numbers and an operator.
var joinBlock = new JoinBlock <int, int, char>();
// Post two values to each target of the join.
joinBlock.Target1.Post(3);
joinBlock.Target1.Post(6);
joinBlock.Target2.Post(5);
joinBlock.Target2.Post(4);
joinBlock.Target3.Post('+');
joinBlock.Target3.Post('-');
// Receive each group of values and apply the operator part
// to the number parts.
for (int i = 0; i < 2; i++)
{
var data = joinBlock.Receive();
switch (data.Item3)
{
case '+':
Console.WriteLine("{0} + {1} = {2}",
data.Item1, data.Item2, data.Item1 + data.Item2);
break;
case '-':
Console.WriteLine("{0} - {1} = {2}",
data.Item1, data.Item2, data.Item1 - data.Item2);
break;
default:
Console.WriteLine("Unknown operator '{0}'.", data.Item3);
break;
}
}
/* Output:
* 3 + 5 = 8
* 6 - 4 = 2
*/
// </snippet8>
}
static public void Run()
{
var opts = new GroupingDataflowBlockOptions {
Greedy = false
};
var jBlock = new JoinBlock <int, int>(opts);
for (int i = 0; i < 10; i++)
{
Task <bool> task = jBlock.Target1.SendAsync(i);
// needed to capture 'i' so we can use it in `ContinueWith`
int iCopy = i;
task.ContinueWith(t => {
if (t.Result)
{
Console.WriteLine("Target1 accepted: " + iCopy);
}
else
{
Console.WriteLine("Target1 REFUSED: " + iCopy);
}
});
}
for (int i = 0; i < 10; i++)
{
Task <bool> task = jBlock.Target2.SendAsync(i);
// needed to capture 'i' so we can use it in `ContinueWith`
int iCopy = i;
task.ContinueWith(t => {
if (t.Result)
{
Console.WriteLine("Target2 accepted: " + iCopy);
}
else
{
Console.WriteLine("Target2 REFUSED: " + iCopy);
}
});
}
for (int i = 0; i < 10; i++)
{
Console.WriteLine(jBlock.Receive());
}
Console.WriteLine("Done");
}
public UserModel Crete(int id, string name)
{
var jb = new JoinBlock <int, string>();
jb.Target1.Post(id);
jb.Target2.Post(name);
var result = jb.Receive();
var res = new UserModel {
Id = result.Item1,
Name = result.Item2
};
return(res);
}
public void BoundedCapacityTest()
{
var block = new JoinBlock <int, int> (
new GroupingDataflowBlockOptions {
BoundedCapacity = 1
});
Assert.IsTrue(block.Target1.Post(1));
Assert.IsFalse(block.Target1.Post(2));
Assert.IsTrue(block.Target2.Post(10));
Assert.IsFalse(block.Target2.Post(11));
Assert.IsFalse(block.Target1.Post(3));
Assert.AreEqual(Tuple.Create(1, 10), block.Receive());
Assert.IsTrue(block.Target1.Post(4));
}
static public void Run()
{
var jBlock = new JoinBlock <int, int>();
for (int i = 0; i < 10; i++)
{
jBlock.Target1.Post(i);
}
for (int i = -9; i < 1; i++)
{
jBlock.Target2.Post(i);
}
for (int i = 0; i < 10; i++)
{
Console.WriteLine(jBlock.Receive());
}
Console.WriteLine("Done");
}
/// <summary>
/// The following basic example demonstrates a case in which a JoinBlock<T1,T2,T3>
/// object requires multiple data to compute a value. This example creates a
/// JoinBlock<T1,T2,T3> object that requires two Int32 values and a Char value to
/// perform an arithmetic operation.
/// </summary>
public static void Run()
{
// Create a JoinBlock<int, int, char> object that requires
// two numbers and an operator.
/*Provides a dataflow block that joins across multiple dataflow sources,
* which are not necessarily of the same type, waiting for one item to arrive for each type before
* they’re all released together as a tuple that contains one item per type*/
JoinBlock <int, int, char> joinBlock = new JoinBlock <int, int, char>();
// Post two values to each target of the join.
joinBlock.Target1.Post(3);
joinBlock.Target1.Post(6);
joinBlock.Target2.Post(5);
joinBlock.Target2.Post(4);
joinBlock.Target3.Post('+');
joinBlock.Target3.Post('-');
// Receive each group of values and apply the operator part
// to the number parts.
for (int i = 0; i < 2; i++)
{
Tuple <int, int, char> data = joinBlock.Receive();
switch (data.Item3)
{
case '+':
Console.WriteLine("{0} + {1} = {2}", data.Item1, data.Item2, data.Item1 + data.Item2);
break;
case '-':
Console.WriteLine("{0} - {1} = {2}", data.Item1, data.Item2, data.Item1 - data.Item2);
break;
default:
Console.WriteLine("Unknown operator '{0}'.", data.Item3); break;
}
}
}
public override void Run()
{
// 只可以传入两个或三个泛型类型
JoinBlock <RunModel, string, RunModel> joinBlock = new JoinBlock <RunModel, string, RunModel>();
var models = this.CreateCollection(2);
// 注意：并发操作下，必须 lock，否则组内的数据可能因为顺序而匹配为错误的组
joinBlock.Target1.Post(models[0]);
joinBlock.Target2.Post("next is");
joinBlock.Target3.Post(models[1]);
joinBlock.Target1.Post(models[1]);
joinBlock.Target2.Post("last is");
joinBlock.Target3.Post(models[0]);
// JoinBlock 每个 Target 的数据必须匹配为完整组时才可以触发处理逻辑
for (int index = 0; index < 2; index++)
{
var result = joinBlock.Receive();
Helper.PrintLine($"{result.Item1.Name} {result.Item2} {result.Item3}");
}
}
static public void Run()
{
var opts = new GroupingDataflowBlockOptions {
Greedy = false
};
var jBlock = new JoinBlock <int, int>(opts);
for (int i = 0; i < 10; i++)
{
if (jBlock.Target1.Post(i))
{
Console.WriteLine("Target1 accepted: " + i);
}
else
{
Console.WriteLine("Target1 REFUSED: " + i);
}
}
for (int i = 0; i < 10; i++)
{
if (jBlock.Target2.Post(i))
{
Console.WriteLine("Target2 accepted: " + i);
}
else
{
Console.WriteLine("Target2 REFUSED: " + i);
}
}
for (int i = 0; i < 10; i++)
{
Console.WriteLine(jBlock.Receive());
}
Console.WriteLine("Done");
}
public async Task TestLinkTo_DoubleLinking()
{
foreach (bool greedy in DataflowTestHelpers.BooleanValues)
foreach (bool append in DataflowTestHelpers.BooleanValues)
{
var source1 = new BufferBlock<int>();
var source2 = new BufferBlock<int>();
var jb = new JoinBlock<int, int>(new GroupingDataflowBlockOptions { MaxNumberOfGroups = 1, Greedy = greedy });
var ignored = source1.Completion.ContinueWith(_ => jb.Target1.Complete(), TaskScheduler.Default);
ignored = source2.Completion.ContinueWith(_ => jb.Target2.Complete(), TaskScheduler.Default);
using (source1.LinkTo(jb.Target1))
{
source1.LinkTo(jb.Target1, new DataflowLinkOptions { Append = append }); // force NopLinkPropagator creation
}
using (source2.LinkTo(jb.Target2))
{
source2.LinkTo(jb.Target2, new DataflowLinkOptions { Append = append }); // force NopLinkPropagator creation
}
source1.Post(42);
source2.Post(43);
source1.Complete();
source2.Complete();
var tuple = jb.Receive();
Assert.Equal(expected: 42, actual: tuple.Item1);
Assert.Equal(expected: 43, actual: tuple.Item2);
}
ITargetBlock<int> target = new ActionBlock<int>(i => { });
ISourceBlock<int> source = new BufferBlock<int>();
using (source.LinkTo(target))
{
source.LinkTo(target, new DataflowLinkOptions { PropagateCompletion = true });
source.LinkTo(target, new DataflowLinkOptions { PropagateCompletion = true }, f => false);
}
source.Fault(new FormatException());
await Assert.ThrowsAsync<AggregateException>(() => target.Completion);
}
public void TestLinkTo_TwoPhaseCommit()
{
var source1 = new BufferBlock<int>();
var source2 = new BufferBlock<int>();
var jb = new JoinBlock<int, int>(new GroupingDataflowBlockOptions { Greedy = false, MaxNumberOfGroups = 1 });
source1.Completion.ContinueWith(_ => jb.Target1.Complete(), TaskScheduler.Default);
source2.Completion.ContinueWith(_ => jb.Target2.Complete(), TaskScheduler.Default);
source1.LinkTo(jb.Target1);
source2.LinkTo(jb.Target2);
source1.Post(42);
source2.Post(43);
source1.Complete();
source2.Complete();
var tuple = jb.Receive();
Assert.Equal(expected: 42, actual: tuple.Item1);
Assert.Equal(expected: 43, actual: tuple.Item2);
}
public void BoundedCapacityTest ()
{
var block = new JoinBlock<int, int> (
new GroupingDataflowBlockOptions { BoundedCapacity = 1 });
Assert.IsTrue (block.Target1.Post (1));
Assert.IsFalse (block.Target1.Post (2));
Assert.IsTrue (block.Target2.Post (10));
Assert.IsFalse (block.Target2.Post (11));
Assert.IsFalse (block.Target1.Post (3));
Assert.AreEqual (Tuple.Create (1, 10), block.Receive ());
Assert.IsTrue (block.Target1.Post (4));
}
public void RunJoinBlockConformanceTests()
{
// Test Post/Receive single block
{
int iter = 2;
var block2 = new JoinBlock <int, int>();
for (int i = 0; i < iter; i++)
{
block2.Target1.Post(i);
block2.Target2.Post(i);
var msg = block2.Receive();
Assert.False(msg.Item1 != i || msg.Item2 != i, string.Format("JoinBlock Post/Receive failed expected {0},{1} and actual {2},{3}", i, i, msg.Item1, msg.Item2));
}
var block3 = new JoinBlock <int, int, int>();
for (int i = 0; i < iter; i++)
{
block3.Target1.Post(i);
block3.Target2.Post(i);
block3.Target3.Post(i);
var msg = block3.Receive();
Assert.False(msg.Item1 != i || msg.Item2 != i || msg.Item3 != i, string.Format("JoinBlock Post/Receive failed expected {0},{1},{2} and actual {3},{4},{5}", i, i, i, msg.Item1, msg.Item2, msg.Item3));
}
}
// Test PostAll then Receive single block
{
int iter = 2;
var block2 = new JoinBlock <int, int>();
for (int i = 0; i < iter; i++)
{
block2.Target1.Post(i);
block2.Target2.Post(i);
}
for (int i = 0; i < iter; i++)
{
var msg = block2.Receive();
Assert.False(msg.Item1 != msg.Item2, "JoinBlock PostAll then Receive failed expected, incorrect msg pair");
}
var block3 = new JoinBlock <int, int, int>();
for (int i = 0; i < iter; i++)
{
block3.Target1.Post(i);
block3.Target2.Post(i);
block3.Target3.Post(i);
}
for (int i = 0; i < iter; i++)
{
var msg = block3.Receive();
Assert.False(msg.Item1 != msg.Item2 || msg.Item2 != msg.Item3, "JoinBlock PostAll then Receive failed expected, incorrect msg pair");
}
}
//Test one target Post with TryReceive
{
var block2 = new JoinBlock <int, int>();
block2.Target1.Post(0);
Tuple <int, int> result2;
Assert.False(block2.TryReceive(out result2), "JoinBlock.TryReceive failed, returned true and only one target posted a message");
Assert.False(block2.OutputCount > 0, "JoinBlock.OutputCount failed, returned count > 0 and only one target posted a message");
var block3 = new JoinBlock <int, int, int>();
block3.Target1.Post(0);
Tuple <int, int, int> result3;
Assert.False(block3.TryReceive(out result3), "JoinBlock.TryReceive failed, returned true and only one target posted a message");
Assert.False(block3.OutputCount > 0, "JoinBlock.OutputCount failed, returned count > 0 and only one target posted a message");
}
// Test JoinBlock`2 using a precanceled token
{
var localPassed = true;
try
{
var cts = new CancellationTokenSource();
cts.Cancel();
var dbo = new GroupingDataflowBlockOptions {
CancellationToken = cts.Token, MaxNumberOfGroups = 1
};
var jb = new JoinBlock <int, int>(dbo);
Tuple <int, int> ignoredValue;
IList <Tuple <int, int> > ignoredValues;
localPassed &= jb.LinkTo(new ActionBlock <Tuple <int, int> >(delegate { })) != null;
localPassed &= jb.Target1.Post(42) == false;
localPassed &= jb.Target2.Post(42) == false;
localPassed &= jb.Target1.SendAsync(42).Result == false;
localPassed &= jb.Target2.SendAsync(42).Result == false;
localPassed &= jb.TryReceiveAll(out ignoredValues) == false;
localPassed &= jb.TryReceive(out ignoredValue) == false;
localPassed &= jb.OutputCount == 0;
localPassed &= jb.Completion != null;
jb.Target1.Complete();
jb.Target2.Complete();
}
catch (Exception)
{
localPassed = false;
}
Assert.True(localPassed, string.Format("Precanceled tokens on JB`2 - {0}", localPassed ? "Passed" : "FAILED"));
}
// Test JoinBlock`3 using a precanceled token
{
var localPassed = true;
try
{
var cts = new CancellationTokenSource();
cts.Cancel();
var dbo = new GroupingDataflowBlockOptions {
CancellationToken = cts.Token, MaxNumberOfGroups = 1
};
var jb = new JoinBlock <int, int, int>(dbo);
Tuple <int, int, int> ignoredValue;
IList <Tuple <int, int, int> > ignoredValues;
localPassed &= jb.LinkTo(new ActionBlock <Tuple <int, int, int> >(delegate { })) != null;
localPassed &= jb.Target1.Post(42) == false;
localPassed &= jb.Target2.Post(42) == false;
localPassed &= jb.Target3.Post(42) == false;
localPassed &= jb.Target1.SendAsync(42).Result == false;
localPassed &= jb.Target2.SendAsync(42).Result == false;
localPassed &= jb.Target3.SendAsync(42).Result == false;
localPassed &= jb.TryReceiveAll(out ignoredValues) == false;
localPassed &= jb.TryReceive(out ignoredValue) == false;
localPassed &= jb.OutputCount == 0;
localPassed &= jb.Completion != null;
jb.Target1.Complete();
jb.Target2.Complete();
jb.Target3.Complete();
}
catch (Exception)
{
localPassed = false;
}
Assert.True(localPassed, string.Format("Precanceled tokens on JB`3 - {0}", localPassed ? "Passed" : "FAILED"));
}
// Test JoinBlock`2 completion through all targets
{
var localPassed = true;
var join = new JoinBlock <int, int>();
join.Target1.Post(1);
join.Target1.Complete();
join.Target2.Complete();
localPassed = join.Completion.Wait(2000);
Assert.True(localPassed, string.Format("JoinBlock`2 completed through targets - {0}", localPassed ? "Passed" : "FAILED"));
}
// Test JoinBlock`3 completion through all targets
{
var localPassed = true;
var join = new JoinBlock <int, int, int>();
join.Target1.Post(1);
join.Target1.Complete();
join.Target2.Complete();
join.Target3.Complete();
localPassed = join.Completion.Wait(2000);
Assert.True(localPassed, string.Format("JoinBlock`3 completed through targets - {0}", localPassed ? "Passed" : "FAILED"));
}
// Test JoinBlock`2 completion through block
{
var localPassed = true;
var join = new JoinBlock <int, int>();
join.Target1.Post(1);
join.Complete();
localPassed = join.Completion.Wait(2000);
Assert.True(localPassed, string.Format("JoinBlock`2 completed through block - {0}", localPassed ? "Passed" : "FAILED"));
}
// Test JoinBlock`3 completion through block
{
var localPassed = true;
var join = new JoinBlock <int, int, int>();
join.Target1.Post(1);
join.Complete();
localPassed = join.Completion.Wait(2000);
Assert.True(localPassed, string.Format("JoinBlock`3 completed through block - {0}", localPassed ? "Passed" : "FAILED"));
}
}
private static void T2()
{
Console.ReadKey();
var rnd = new Random();
var executionDataflowBlockOptions = new ExecutionDataflowBlockOptions()
{
MaxDegreeOfParallelism = 10
};
ActionBlock <int> action1 = new ActionBlock <int>(async(x) =>
{
var millisecondsDelay = rnd.Next(10, 2000);
await Task.Delay(millisecondsDelay);
Console.WriteLine("Block1: " + x);
}, executionDataflowBlockOptions);
ActionBlock <int> action2 = new ActionBlock <int>(async(x) =>
{
await Task.Delay(20);
Console.WriteLine("Block2: " + x);
}, executionDataflowBlockOptions);
ActionBlock <int> action3 = new ActionBlock <int>(async(x) =>
{
await Task.Delay(200);
Console.WriteLine("Block3: " + x);
}, executionDataflowBlockOptions);
var buffer1 = new BufferBlock <int>();
buffer1.LinkTo(action1);
foreach (var i in Enumerable.Range(1, 100))
{
buffer1.Post(i);
}
Console.ReadKey();
var jb = new JoinBlock <int, string>();
jb.Target1.Post(1);
jb.Target2.Post("Name1");
Console.WriteLine(jb.Receive());
Console.WriteLine("Done");
Console.ReadKey();
//Join();
//Console.ReadKey();
//var bufferBlock = new BufferBlock<int>();
//var broadCast = new BroadcastBlock<int>(x => x + 10);
//var writeOnceBlock = new WriteOnceBlock<int>((a) => a + 100);
//var writer = new ActionBlock<int>(x => Console.WriteLine(x));
//var multiplyer = new TransformBlock<int, int>(x => x * x);
//var multiplyerMany = new TransformManyBlock<int, int>(x => Enumerable.Range(0, x).ToList());
//var joinBlock = new JoinBlock<int, int>();
//var batchBlock = new BatchBlock<int>(1000);
//var bacthedJoinBlock = new BatchedJoinBlock<int, int>(2);
////AsyncDownloading();
//Console.ReadKey();
}
