public void ConditionVariableTest2()
{
InitializeSRWLock(out var cond_rwlock);
InitializeConditionVariable(out var start_condition);
var wake_all = false;
var cnt = 0;
try
{
var ghThreads = new SafeHTHREAD[5];
for (int i = 0; i < ghThreads.Length; i++)
{
ghThreads[i] = CreateThread(null, 0, ThreadProc, default, 0, out _);
public void Dispose()
{
ChatEndpoint = null;
RenderClient = null;
CaptureClient = null;
AudioClient = null;
if (ChatThread is not null)
{
ChatThread.Dispose();
ChatThread = default;
}
if (ShutdownEvent is not null)
{
ShutdownEvent.Dispose();
ShutdownEvent = null;
}
if (AudioSamplesReadyEvent is not null)
{
AudioSamplesReadyEvent.Dispose();
AudioSamplesReadyEvent = null;
}
}
public void ConditionVariableTest()
{
const int BUFFER_SIZE = 10;
const int PRODUCER_SLEEP_TIME_MS = 50;
const int CONSUMER_SLEEP_TIME_MS = 200;
var Buffer = new int[BUFFER_SIZE];
int LastItemProduced = 0;
uint QueueSize = 0, QueueStartOffset = 0, TotalItemsProduced = 0, TotalItemsConsumed = 0;
var StopRequested = false;
var rand = new Random();
InitializeConditionVariable(out var BufferNotEmpty);
InitializeConditionVariable(out var BufferNotFull);
InitializeCriticalSection(out var BufferLock);
using (SafeHTHREAD hProducer1 = CreateThread(null, 0, ProducerThreadProc, (IntPtr)1L, 0, out _),
hConsumer1 = CreateThread(null, 0, ConsumerThreadProc, (IntPtr)1L, 0, out _),
hConsumer2 = CreateThread(null, 0, ConsumerThreadProc, (IntPtr)2L, 0, out _))
{
SleepEx(5000, false);
EnterCriticalSection(ref BufferLock);
StopRequested = true;
LeaveCriticalSection(ref BufferLock);
WakeAllConditionVariable(ref BufferNotFull);
WakeAllConditionVariable(ref BufferNotEmpty);
WaitForMultipleObjects(new[] { hProducer1, hConsumer1, hConsumer2 }, true, INFINITE);
TestContext.WriteLine("TotalItemsProduced: {0}, TotalItemsConsumed: {1}", TotalItemsProduced, TotalItemsConsumed);
}
uint ProducerThreadProc(IntPtr p)
{
var ProducerId = p.ToInt64();
while (true)
{
// Produce a new item.
Sleep((uint)rand.Next(PRODUCER_SLEEP_TIME_MS));
var Item = InterlockedIncrement(ref LastItemProduced);
EnterCriticalSection(ref BufferLock);
while (QueueSize == BUFFER_SIZE && !StopRequested)
{
// Buffer is full - sleep so consumers can get items.
SleepConditionVariableCS(ref BufferNotFull, ref BufferLock, INFINITE);
}
if (StopRequested)
{
LeaveCriticalSection(ref BufferLock);
break;
}
// Insert the item at the end of the queue and increment size.
Buffer[(QueueStartOffset + QueueSize) % BUFFER_SIZE] = Item;
QueueSize++;
TotalItemsProduced++;
System.Diagnostics.Debug.Write($"Producer {ProducerId}: item {Item}, queue size {QueueSize}\r\n");
LeaveCriticalSection(ref BufferLock);
// If a consumer is waiting, wake it.
WakeConditionVariable(ref BufferNotEmpty);
}
System.Diagnostics.Debug.Write($"Producer {ProducerId} exiting\r\n");
return(0);
}
uint ConsumerThreadProc(IntPtr p)
{
var ConsumerId = p.ToInt64();
while (true)
{
EnterCriticalSection(ref BufferLock);
while (QueueSize == 0 && !StopRequested)
{
// Buffer is empty - sleep so producers can create items.
SleepConditionVariableCS(ref BufferNotEmpty, ref BufferLock, INFINITE);
}
if (StopRequested && QueueSize == 0)
{
LeaveCriticalSection(ref BufferLock);
break;
}
// Consume the first available item.
var Item = Buffer[QueueStartOffset];
QueueSize--;
QueueStartOffset++;
TotalItemsConsumed++;
if (QueueStartOffset == BUFFER_SIZE)
{
QueueStartOffset = 0;
}
System.Diagnostics.Debug.Write($"Consumer {ConsumerId}: item {Item}, queue size {QueueSize}\r\n");
LeaveCriticalSection(ref BufferLock);
// If a producer is waiting, wake it.
WakeConditionVariable(ref BufferNotFull);
// Simulate processing of the item.
Sleep((uint)rand.Next(CONSUMER_SLEEP_TIME_MS));
}
System.Diagnostics.Debug.Write($"Consumer {ConsumerId} exiting\r\n");
return(0);
}
}
