// Demonstrates:
// Barrier constructor with post-phase action
// Barrier.AddParticipants()
// Barrier.RemoveParticipant()
// Barrier.SignalAndWait(), incl. a BarrierPostPhaseException being thrown
static void Main(string[] args)
{
int count = 0;
// Create a barrier with three participants
// Provide a post-phase action that will print out certain information
// And the third time through, it will throw an exception
Barrier barrier = new Barrier(3, (b) =>
{
Console.WriteLine("Post-Phase action: count={0}, phase={1}", count, b.CurrentPhaseNumber);
if (b.CurrentPhaseNumber == 2) /*throw new Exception("D'oh!");*/
{
Console.WriteLine("Currently the Phase number is 2");
}
});
// Nope -- changed my mind. Let's make it five participants.
barrier.AddParticipants(2);
// Nope -- let's settle on four participants.
barrier.RemoveParticipant();
// This is the logic run by all participants
Action action = () =>
{
Interlocked.Increment(ref count);
barrier.SignalAndWait(); // during the post-phase action, count should be 4 and phase should be 0
Interlocked.Increment(ref count);
barrier.SignalAndWait(); // during the post-phase action, count should be 8 and phase should be 1
// The third time, SignalAndWait() will throw an exception and all participants will see it
Interlocked.Increment(ref count);
try
{
barrier.SignalAndWait();
}
catch (Exception bppe)
{
Console.WriteLine("Caught BarrierPostPhaseException: {0}", bppe.Message);
}
// The fourth time should be hunky-dory
Interlocked.Increment(ref count);
barrier.SignalAndWait(); // during the post-phase action, count should be 16 and phase should be 3
};
// Now launch 4 parallel actions to serve as 4 participants
Parallel.Invoke(action, action, action, action);
// This (5 participants) would cause an exception:
// Parallel.Invoke(action, action, action, action, action);
// "System.InvalidOperationException: The number of threads using the barrier
// exceeded the total number of registered participants."
// It's good form to Dispose() a barrier when you're done with it.
barrier.Dispose();
Console.ReadKey();
}
public void AddParticipantTest()
{
barrier.AddParticipant();
Assert.AreEqual(participants + 1, barrier.ParticipantCount, "#1");
barrier.AddParticipants(3);
Assert.AreEqual(participants + 4, barrier.ParticipantCount, "#2");
}
static void Barrier()
{
var barrier = new Barrier(3, b =>
{
Console.WriteLine($"End of phase {b.CurrentPhaseNumber + 1}");
});
barrier.AddParticipants(2);
barrier.RemoveParticipant();
Random random = new Random();
Action action = () => {
Thread.Sleep(random.Next(0, 5000));
Console.WriteLine("Stage1");
barrier.SignalAndWait();
Thread.Sleep(random.Next(0, 5000));
Console.WriteLine("Stage2");
barrier.SignalAndWait();
Thread.Sleep(random.Next(0, 5000));
Console.WriteLine("Stage3");
barrier.SignalAndWait();
};
//Starvation
Parallel.Invoke(action, action, action, action);
//Starvation
Parallel.Invoke(action, action, action);
}
internal void Initialize(Index3 groupDimension, int sharedMemSize)
{
sharedMemoryOffset = 0;
sharedMemoryLock = 0;
advancedSharedMemoryBufferIndex = -1;
var groupSize = groupDimension.Size;
var currentBarrierCount = groupBarrier.ParticipantCount;
if (currentBarrierCount > groupSize)
{
groupBarrier.RemoveParticipants(currentBarrierCount - groupSize);
}
else if (currentBarrierCount < groupSize)
{
groupBarrier.AddParticipants(groupSize - currentBarrierCount);
}
if (sharedMemSize > 0)
{
SharedMemory = sharedMemoryBuffer.Allocate <byte>(sharedMemSize);
}
else
{
SharedMemory = new ArrayView <byte>();
}
if (sharedMemSize > SharedMemorySize)
{
throw new InvalidKernelOperationException();
}
currentSharedMemoryView = default;
}
/// <summary>
/// Test AddParticipants
/// </summary>
/// <param name="initialCount">The initial barrier participants count</param>
/// <param name="participantsToAdd">The aprticipants that will be added</param>
/// <param name="exceptionType">Type of the exception in case of invalid input, null for valid cases</param>
/// <returns>Tru if the test succeeded, false otherwise</returns>
private static void RunBarrierTest4_AddParticipants(int initialCount, int participantsToAdd, Type exceptionType)
{
Barrier b = new Barrier(initialCount);
Exception exception = null;
try
{
if (b.AddParticipants(participantsToAdd) != 0)
{
Assert.True(false, string.Format("BarrierTests: AddParticipants failed, the return phase count is not correct"));
}
if (b.ParticipantCount != initialCount + participantsToAdd)
{
Assert.True(false, string.Format("BarrierTests: AddParticipants failed, total participant was not increased"));
}
}
catch (Exception ex)
{
exception = ex;
}
if (exception != null && exceptionType == null)
{
Assert.True(false, string.Format("BarrierTests: AddParticipants failed, unexpected exception has been thrown."));
}
if (exception != null && !Type.Equals(exceptionType, exception.GetType()))
{
Assert.True(false, string.Format("BarrierTests: AddParticipants failed, exceptions types do not match."));
}
}
/// <summary>
/// Starts all required runtime threads.
/// </summary>
/// <param name="groupSize">The group size to use.</param>
private void StartOrContinueRuntimeThreads(int groupSize)
{
if (maxNumLaunchedThreadsPerGroup >= groupSize)
{
return;
}
// Adjust number of threads per MP
processorBarrier.AddParticipants(
groupSize - maxNumLaunchedThreadsPerGroup);
// Launch all threads that we need for processing
for (
int threadIdx = maxNumLaunchedThreadsPerGroup;
threadIdx < groupSize;
++threadIdx)
{
int globalThreadIdx = ProcessorIndex * MaxNumThreadsPerMultiprocessor
+ threadIdx;
threads[threadIdx].Start(globalThreadIdx);
}
// Update the number of launched threads
maxNumLaunchedThreadsPerGroup = groupSize;
}
/// <summary>
/// Returns likelihood of getting each possible hand as an array
/// Note that "cards" includes both the board and hand
/// </summary>
public float[] RunSimulations(List <Card> cards, int simulationsToRun)
{
List <Card> workingList = new List <Card>(cards);
if (workingList.Count > 7)
{
throw new ArgumentException("Too many cards!");
}
while (workingList.Count < 7)
{
workingList.Add(new Card()
{
IsKnown = false
});
}
var cardsArray = workingList.ToArray();
int unknownCards = FindNumberOfUnknownCards(cardsArray);
//Return if no cards have been defined (use precalculated probabilities)
if (unknownCards == 7)
{
_SimulationsRan = -1; //allows others to know when using lookup table
return(GetDefaultProbabilities());
}
float[] probabilities = new float[10]; //probability array to be returned
//Return if all cards have already been defined
if (unknownCards == 0)
{
probabilities[(int)(new PokerHandEvaluator()).Evaluate(cardsArray)] = 100;
return(probabilities);
}
SortCards(ref cardsArray, unknownCards);
//Run actual simulations
for (int i = 0; i < NUM_WORKERS; i++)
{
_Threads[i] = new Thread(() => Simulate(simulationsToRun / NUM_WORKERS, unknownCards, cardsArray));
_Threads[i].Start();
}
_SimulationsDone.SignalAndWait(); //all simulations will be done before passing this point
_SimulationsDone.AddParticipants(NUM_WORKERS); //reset barrier
//Return in probability array form, where each index is the probability of a hand
for (int i = 0; i < _Events.Length; i++)
{
probabilities[i] = _Events[i] / (float)_SimulationsRan * 100;
}
return(probabilities);
}
public void StartWorkerThreads(int ThreadCount)
{
PauseBarrier.AddParticipants(ThreadCount);
ResumeBarrier.AddParticipants(ThreadCount);
for (int I = 0; I < ThreadCount; ++I)
{
var Thread = new Thread(_workerThread);
Thread.Start();
WorkerThreads.Add(Thread);
}
}
private static void InitBarrier(Barrier barrier, int numParticipants)
{
int currentBarrierCount = barrier.ParticipantCount;
if (currentBarrierCount > numParticipants)
{
barrier.RemoveParticipants(currentBarrierCount - numParticipants);
}
else if (currentBarrierCount < numParticipants)
{
barrier.AddParticipants(numParticipants - currentBarrierCount);
}
}
/// <summary>
/// Ensures that the internal barrier has the given number of participants.
/// </summary>
/// <param name="participants">The number of participants.</param>
protected void EnsureBarrierParticipants(int participants)
{
Debug.Assert(participants >= 0, "Invalid number of participants");
var currentBarrierCount = barrier.ParticipantCount;
if (currentBarrierCount > participants)
{
barrier.RemoveParticipants(currentBarrierCount - participants);
}
else if (currentBarrierCount < participants)
{
barrier.AddParticipants(participants - currentBarrierCount);
}
}
/// <summary>
/// Test AddParticipants
/// </summary>
/// <param name="initialCount">The initial barrier participants count</param>
/// <param name="participantsToAdd">The aprticipants that will be added</param>
/// <param name="exceptionType">Type of the exception in case of invalid input, null for valid cases</param>
/// <returns>Tru if the test succeeded, false otherwise</returns>
private static void RunBarrierTest4_AddParticipants(int initialCount, int participantsToAdd, Type exceptionType)
{
Barrier b = new Barrier(initialCount);
try
{
Assert.Equal(0, b.AddParticipants(participantsToAdd));
Assert.Equal(initialCount + participantsToAdd, b.ParticipantCount);
}
catch (Exception ex)
{
Assert.NotNull(exceptionType);
Assert.IsType(exceptionType, ex);
}
}
public static void Execute()
{
_barrierM2.AddParticipants(_participantsCount);
_barrierM2.AddParticipant();
_barrierM2.RemoveParticipant();
var participants = new Thread[_participantsCount];
for (var i = 0; i < _participantsCount; i++)
{
participants[i] = new Thread(Foo)
{
Name = i.ToString()
};
participants[i].Start();
}
}
/// <summary>
/// Use for downloading all images for preview
/// <param name = "_trainingIndex">current training index</param>
/// </summary>
public void DownloadTraining(int _trainingIndex)
{
Barrier barrier = new Barrier(1);
//string newDir = CreateDir(dir, _patient.AccountId.ToString());
////create treatment dir (it if needed)
//newDir = CreateDir(newDir, _patient.PatientTreatment.TreatmentNumber.ToString());
////create training dir (it if needed)
//newDir = CreateDir(newDir, _patient.PatientTreatment.TrainingList[_trainingIndex].TrainingId.ToString());
string newDir = CreateDir(dir, "trainingThumb");
foreach (int key in _patient.PatientTreatment.TrainingList[_trainingIndex].Playlist.Keys)
{
Task downloadThread = new Task(() => {
int keyThread = key;
Exercise exercise = _patient.PatientTreatment.TrainingList[_trainingIndex].Playlist[keyThread][0];
string imagePath = newDir + "\\" + exercise.ExerciseId + ".png";
string _from = exercise.ExerciseThumbs;
if (!File.Exists(imagePath))
{
barrier.AddParticipants(1);
DownloadFile(_from, imagePath);
barrier.SignalAndWait();
}
foreach (Exercise _exercise in _patient.PatientTreatment.TrainingList[_trainingIndex].Playlist[keyThread])
{
_exercise.ExerciseThumbs = imagePath;
}
});
downloadThread.Start();
}
barrier.SignalAndWait();
//barrier.Dispose();
}
public override int[][] Sort(int[][] lists)
{
barrier.AddParticipants(100);
for (int i = 0; i < 100; i++)
{
int k = i;
threads[k] = new Thread(() => SortList(lists[k]));
threads[k].Start();
}
while (barrier.ParticipantCount > 0)
{
Program.gui.form.Invoke((MethodInvoker)(() => Program.gui.Draw(lists)));
}
Program.gui.form.Invoke((MethodInvoker)(() => Program.gui.Draw(lists)));
return(lists);
}
static void timeOfDayChangingWatcher()
{
while (true)
{
if (timeOfDayChanged)
{
barrier.RemoveParticipants(amountMorningClients);
barrier.AddParticipants(amountAfternoonClient);
List <Thread> threads = prepareClients(amountMorningClients + 10, semaphore, shop, barrier, amountAfternoonClient);
threads.ForEach(que => que.Start());
threads.ForEach(que => que.Join());
return;
}
Thread.Sleep(25);
}
}
/// <summary>
/// Test AddParticipants
/// </summary>
/// <param name="initialCount">The initial barrier participants count</param>
/// <param name="participantsToAdd">The aprticipants that will be added</param>
/// <param name="exceptionType">Type of the exception in case of invalid input, null for valid cases</param>
/// <returns>Tru if the test succeeded, false otherwise</returns>
private static bool RunBarrierTest4_AddParticipants(int initialCount, int participantsToAdd, Type exceptionType)
{
TestHarness.TestLog("AddParticipants(" + initialCount + "," + participantsToAdd + ")");
Barrier b = new Barrier(initialCount);
Exception exception = null;
try
{
if (b.AddParticipants(participantsToAdd) != 0)
{
TestHarness.TestLog("AddParticipants failed, the return phase count is not correct");
return(false);
}
if (b.ParticipantCount != initialCount + participantsToAdd)
{
TestHarness.TestLog("AddParticipants failed, total participant was not increased");
return(false);
}
}
catch (Exception ex)
{
exception = ex;
}
if (exception != null && exceptionType == null)
{
TestHarness.TestLog("AddParticipants failed, unexpected exception has been thrown.");
return(false);
}
if (exception != null && !Type.Equals(exceptionType, exception.GetType()))
{
TestHarness.TestLog("AddParticipants failed, exceptions types do not match.");
return(false);
}
TestHarness.TestLog("AddParticipants succeeded");
return(true);
}
/// <summary>
/// Starts all required runtime threads.
/// </summary>
/// <param name="groupSize">The group size to use.</param>
private void StartOrContinueRuntimeThreads(int groupSize)
{
if (maxNumLaunchedThreadsPerGroup >= groupSize)
{
return;
}
// Launch all threads that we need for processing
Parallel.For(maxNumLaunchedThreadsPerGroup, groupSize, threadIdx =>
{
int globalThreadIdx = ProcessorIndex * MaxNumThreadsPerMultiprocessor
+ threadIdx;
threads[threadIdx].Start(globalThreadIdx);
});
maxNumLaunchedThreadsPerGroup = groupSize;
// Adjust number of threads per MP
if (processorBarrier.ParticipantCount < maxNumLaunchedThreadsPerGroup)
{
processorBarrier.AddParticipants(
maxNumLaunchedThreadsPerGroup -
processorBarrier.ParticipantCount);
}
}
public void Initialize(Index3 groupDim, int sharedMemSize)
{
GroupDim = groupDim;
var currentBarrierCount = groupBarrier.ParticipantCount;
if (currentBarrierCount > GroupSize)
{
groupBarrier.RemoveParticipants(currentBarrierCount - GroupSize);
}
else if (currentBarrierCount < GroupSize)
{
groupBarrier.AddParticipants(GroupSize - currentBarrierCount);
}
if (sharedMemSize > 0)
{
SharedMemory = sharedMemoryBuffer.Allocate <byte>(sharedMemSize);
}
else
{
SharedMemory = new ArrayView <byte>();
}
}
/// <summary>
/// Test AddParticipants
/// </summary>
/// <param name="initialCount">The initial barrier participants count</param>
/// <param name="participantsToAdd">The aprticipants that will be added</param>
/// <param name="exceptionType">Type of the exception in case of invalid input, null for valid cases</param>
/// <returns>Tru if the test succeeded, false otherwise</returns>
private static void RunBarrierTest4_AddParticipants(int initialCount, int participantsToAdd, Type exceptionType)
{
Barrier b = new Barrier(initialCount);
Exception exception = null;
try
{
if (b.AddParticipants(participantsToAdd) != 0)
{
Assert.True(false, string.Format("BarrierTests: AddParticipants failed, the return phase count is not correct"));
}
if (b.ParticipantCount != initialCount + participantsToAdd)
{
Assert.True(false, string.Format("BarrierTests: AddParticipants failed, total participant was not increased"));
}
}
catch (Exception ex)
{
exception = ex;
}
if (exception != null && exceptionType == null)
{
Assert.True(false, string.Format("BarrierTests: AddParticipants failed, unexpected exception has been thrown."));
}
if (exception != null && !Type.Equals(exceptionType, exception.GetType()))
{
Assert.True(false, string.Format("BarrierTests: AddParticipants failed, exceptions types do not match."));
}
}
// Demonstrates:
// Barrier constructor with post-phase action
// Barrier.AddParticipants()
// Barrier.RemoveParticipant()
// Barrier.SignalAndWait(), incl. a BarrierPostPhaseException being thrown
static void Main(string[] args)
{
int count = 0;
// Create a barrier with 3 participants
// Provide a post-phase action that will print out certain information
// And the third time through, it will throw an exception.
Barrier barrier = new Barrier(3, (b) =>
{
Console.WriteLine("Post phase action: count={0}, phase={1}",
count, b.CurrentPhaseNumber);
if (b.CurrentPhaseNumber == 2)
{
throw new Exception("D'oh!");
}
});
// new requirement, make it 5 participants
barrier.AddParticipants(2);
// nope, -- let's settle on 4 participants
barrier.RemoveParticipant();
// this is the logic run by all participants
Action action = () =>
{
Interlocked.Increment(ref count);
barrier.SignalAndWait(); // during the post-phase action, count should be 4
Interlocked.Increment(ref count);
barrier.SignalAndWait(); // during the post-phase action, count should be 8
// the third time, SignalAndWait() will throw exception and all participants will see it
Interlocked.Increment(ref count);
try
{
barrier.SignalAndWait();
}
catch (BarrierPostPhaseException bppe)
{
Console.WriteLine("Caught BarrierPostPhaseException: {0}", bppe.Message);
}
// The fourth time should be hunky-dory
Interlocked.Increment(ref count);
Console.WriteLine("{0} ", count);
barrier.SignalAndWait(); // during the post-phase action, count should be 16 and phase should be 3
};
// Now launch 4 parallel actions to serve as 4 participants
Parallel.Invoke(action, action, action, action);
// This (5 participants) would cause an exception
//Parallel.Invoke(action, action, action, action, action);
// "System.InvalidException: the number of threads using the barrier exceeded the total number of registered participants
// it's good form to Dispose() a barrier when you're done with it.
barrier.Dispose();
Console.WriteLine("Press enter to continue");
Console.ReadLine();
}
/// <summary>
/// TBD
/// </summary>
public void Reset()
{
_barrier.RemoveParticipants(_count);
_barrier.AddParticipants(_count);
}
/// <summary>
/// Test AddParticipants
/// </summary>
/// <param name="initialCount">The initial barrier participants count</param>
/// <param name="participantsToAdd">The aprticipants that will be added</param>
/// <param name="exceptionType">Type of the exception in case of invalid input, null for valid cases</param>
/// <returns>Tru if the test succeeded, false otherwise</returns>
private static void RunBarrierTest4_AddParticipants(int initialCount, int participantsToAdd, Type exceptionType)
{
Barrier b = new Barrier(initialCount);
try
{
Assert.Equal(0, b.AddParticipants(participantsToAdd));
Assert.Equal(initialCount + participantsToAdd, b.ParticipantCount);
}
catch (Exception ex)
{
Assert.NotNull(exceptionType);
Assert.IsType(exceptionType, ex);
}
}
