public void Reset()
{
mStatus = -1;
Error = null;
IsCompleted = false;
Result = null;
mSpinWait.Reset();
mResetEvent.Reset();
}
// Helper function to send an entire test sequence fast (no RX, no open/close of serial)
//public void Send_test_sequence_fast(byte[] tx_buf, SerialPort fpga_com_port)
//{
// Open Serial Port
//SerialPort fpga_com_port = setup_serial_port();
// Send Data
//Send_serial_data_turbo(tx_buf, fpga_com_port);
// Rx Reply
//string rx_string = Read_serial_data(fpga_com_port);
// Print
//Debug.WriteLine("Write: 0x" + tx_string);
//Debug.WriteLine("Read: 0x" + rx_string);
//Debug.WriteLine("Data Equal: " + tx_string.Equals(rx_string));
// Close Serial Port
//close_serial_port(fpga_com_port);
//}
// Helper function allow us to sleep with microsecond resolution but burns through CPU clock cycles as spin-locks rather than sleeps
// Needs this as Windows scheduler only works at the 13ms resolution
// This function shall allow us to specify a microsecond and achieve timing with max error of about 30 uS overshoot (worst-case seen in practice)
// Perfect for our application where we want timing accurate to about 0.1mS
public void high_resolution_sleep_us(UInt32 wait_time_in_microseconds)
{
//// Make sure we are using the High Performance Stopwatch
//if (Stopwatch.IsHighResolution)
//{
// Console.WriteLine("Operations timed using the system's high-resolution performance counter.");
//}
//else
//{
// Console.WriteLine("Operations timed using the DateTime class.");
//}
// Where we are now
Stopwatch my_stopwatch = Stopwatch.StartNew();
//long starting_timestamp = Stopwatch.GetTimestamp();
// Where we want to get to, we count this using ticks rather than timestamps as more precise and its how the API works
long nano_sec_per_tick = (1000L * 1000L * 1000L) / Stopwatch.Frequency; // Ony my PC, observed that this was 100 nanosec/tick => Our timer has a 10 MHz tick rate, nice, plenty for microsecond resolution
long ticks_to_wait = (wait_time_in_microseconds * 1000L) / nano_sec_per_tick;
long starting_ticks = my_stopwatch.ElapsedTicks;
long target_ticks = starting_ticks + ticks_to_wait;
// Use a spin-lock structure for no-ops to get our timing - .Net way of doing this
SpinWait spin_locker = new System.Threading.SpinWait();
long tick_count = my_stopwatch.ElapsedTicks;
while (tick_count < target_ticks)
{
// Spin-Lock until we have reached our tips target
tick_count = my_stopwatch.ElapsedTicks;
spin_locker.SpinOnce();
// Want't good timing, so reset spin_locker before it goes into a longer sleep
if (spin_locker.NextSpinWillYield)
{
spin_locker.Reset();
}
//Console.WriteLine("Ticks: " + tick_count);
}
//spin_locker( )1
// Now check how long it took for debugging
long ending_ticks = my_stopwatch.ElapsedTicks;
long elapsed_ticks = ending_ticks - starting_ticks;
//double ElapsedSeconds = elapsed_ticks * (1.0 / Stopwatch.Frequency);
double ElapsedMicroSeconds = elapsed_ticks * (nano_sec_per_tick / 1000.0); // ORdered like this to not lose precision due to truncations
//Console.WriteLine("Elapsed Microseconds: " + ElapsedMicroSeconds);
}
protected override void ConsumeItems( int count )
{
SpinWait spinWait = new SpinWait();
int value;
for ( int i = 0; i < count; )
{
if ( this.stack.TryPop( out value ) )
{
i++;
spinWait.Reset();
}
else
{
spinWait.SpinOnce();
}
}
}
private bool do_Process(ConcurrentQueue <T> mq, int x)
{
spin.Reset();
while (!mq.IsEmpty)
{
T msg;
while (mq.TryPeek(out msg))
{
IsProcessSuccess = true;
try
{
messageArg.Message = msg;
OnMessageComing(messageArg);
}
finally
{
if (IsProcessSuccess)
{
tryCount = 0;
mq.TryDequeue(out msg);
}
else
{
tryCount++;
if (tryCount >= MaxTryCount)
{
tryCount = 0;
mq.TryDequeue(out msg);
}
}
}
if (spin.Count >= SpinRate * x)
{
return(false);
}
spin.SpinOnce();
}
}
return(false);
}
/// <summary>
/// Signals that a participant has reached the barrier and waits for all other participants to reach
/// the barrier as well, using a
/// 32-bit signed integer to measure the time interval, while observing a <see
/// cref="T:System.Threading.CancellationToken"/>.
/// </summary>
/// <param name="millisecondsTimeout">The number of milliseconds to wait, or <see
/// cref="Timeout.Infinite"/>(-1) to wait indefinitely.</param>
/// <param name="cancellationToken">The <see cref="T:System.Threading.CancellationToken"/> to
/// observe.</param>
/// <returns>true if all other participants reached the barrier; otherwise, false.</returns>
/// <exception cref="T:System.ArgumentOutOfRangeException"><paramref name="millisecondsTimeout"/> is a
/// negative number other than -1, which represents an infinite time-out.</exception>
/// <exception cref="T:System.InvalidOperationException">
/// The method was invoked from within a post-phase action, the barrier currently has 0 participants,
/// or the barrier is being used by more threads than are registered as participants.
/// </exception>
/// <exception cref="T:System.OperationCanceledException"><paramref name="cancellationToken"/> has been
/// canceled.</exception>
/// <exception cref="T:System.ObjectDisposedException">The current instance has already been
/// disposed.</exception>
public bool SignalAndWait(int millisecondsTimeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
if (millisecondsTimeout < -1)
{
throw new System.ArgumentOutOfRangeException("millisecondsTimeout", millisecondsTimeout,
SR.GetString(SR.Barrier_SignalAndWait_ArgumentOutOfRange));
}
// in case of this is called from the PHA
if (m_actionCallerID != 0 && Thread.CurrentThread.ManagedThreadId == m_actionCallerID)
{
throw new InvalidOperationException(SR.GetString(SR.Barrier_InvalidOperation_CalledFromPHA));
}
// local variables to extract the basic barrier variable and update them
// The are declared here instead of inside the loop body because the will be used outside the loop
bool sense; // The sense of the barrier *before* the phase associated with this SignalAndWait call completes
int total;
int current;
int currentTotal;
long phase;
SpinWait spinner = new SpinWait();
while (true)
{
currentTotal = m_currentTotalCount;
GetCurrentTotal(currentTotal, out current, out total, out sense);
phase = CurrentPhaseNumber;
// throw if zero participants
if (total == 0)
{
throw new InvalidOperationException(SR.GetString(SR.Barrier_SignalAndWait_InvalidOperation_ZeroTotal));
}
// Try to detect if the number of threads for this phase exceeded the total number of participants or not
// This can be detected if the current is zero which means all participants for that phase has arrived and the phase number is not changed yet
if (current == 0 && sense != (CurrentPhaseNumber % 2 == 0))
{
throw new InvalidOperationException(SR.GetString(SR.Barrier_SignalAndWait_InvalidOperation_ThreadsExceeded));
}
//This is the last thread, finish the phase
if (current + 1 == total)
{
if (SetCurrentTotal(currentTotal, 0, total, !sense))
{
#if !FEATURE_PAL && !SILVERLIGHT // PAL doesn't support eventing
if (CdsSyncEtwBCLProvider.Log.IsEnabled())
{
CdsSyncEtwBCLProvider.Log.Barrier_PhaseFinished(sense, CurrentPhaseNumber);
}
#endif
FinishPhase(sense);
return true;
}
}
else if (SetCurrentTotal(currentTotal, current + 1, total, sense))
{
break;
}
spinner.SpinOnce();
}
// ** Perform the real wait **
// select the correct event to wait on, based on the current sense.
ManualResetEventSlim eventToWaitOn = (sense) ? m_evenEvent : m_oddEvent;
bool waitWasCanceled = false;
bool waitResult = false;
try
{
waitResult = DiscontinuousWait(eventToWaitOn, millisecondsTimeout, cancellationToken, phase);
}
catch (OperationCanceledException )
{
waitWasCanceled = true;
}
catch (ObjectDisposedException)// in case a ---- happen where one of the thread returned from SignalAndWait and the current thread calls Wait on a disposed event
{
// make sure the current phase for this thread is already finished, otherwise propagate the exception
if (phase < CurrentPhaseNumber)
waitResult = true;
else
throw;
}
if (!waitResult)
{
//reset the spinLock to prepare it for the next loop
spinner.Reset();
//If the wait timeout expired and all other thread didn't reach the barrier yet, update the current count back
while (true)
{
bool newSense;
currentTotal = m_currentTotalCount;
GetCurrentTotal(currentTotal, out current, out total, out newSense);
// If the timeout expired and the phase has just finished, return true and this is considered as succeeded SignalAndWait
//otherwise the timeout expired and the current phase has not been finished yet, return false
//The phase is finished if the phase member variable is changed (incremented) or the sense has been changed
// we have to use the statements in the comparison below for two cases:
// 1- The sense is changed but the last thread didn't update the phase yet
// 2- The phase is already incremented but the sense flipped twice due to the termination of the next phase
if (phase < CurrentPhaseNumber || sense != newSense)
{
// The current phase has been finished, but we shouldn't return before the events are set/reset otherwise this thread could start
// next phase and the appropriate event has not reset yet which could make it return immediately from the next phase SignalAndWait
// before waiting other threads
WaitCurrentPhase(eventToWaitOn, phase);
Debug.Assert(phase < CurrentPhaseNumber);
break;
}
//The phase has not been finished yet, try to update the current count.
if (SetCurrentTotal(currentTotal, current - 1, total, sense))
{
//if here, then the attempt to backout was successful.
//throw (a fresh) oce if cancellation woke the wait
//or return false if it was the timeout that woke the wait.
//
if (waitWasCanceled)
throw new OperationCanceledException(SR.GetString(SR.Common_OperationCanceled), cancellationToken);
else
return false;
}
spinner.SpinOnce();
}
}
if (m_exception != null)
throw new BarrierPostPhaseException(m_exception);
return true;
}
/// <summary>
/// Signals that a participant has reached the barrier and waits for all other participants to reach
/// the barrier as well, using a
/// 32-bit signed integer to measure the time interval, while observing a <see
/// cref="T:System.Threading.CancellationToken"/>.
/// </summary>
/// <param name="millisecondsTimeout">The number of milliseconds to wait, or <see
/// cref="Timeout.Infinite"/>(-1) to wait indefinitely.</param>
/// <param name="cancellationToken">The <see cref="T:System.Threading.CancellationToken"/> to
/// observe.</param>
/// <returns>true if all other participants reached the barrier; otherwise, false.</returns>
/// <exception cref="T:System.ArgumentOutOfRangeException"><paramref name="millisecondsTimeout"/> is a
/// negative number other than -1, which represents an infinite time-out.</exception>
/// <exception cref="T:System.InvalidOperationException">
/// The method was invoked from within a post-phase action, the barrier currently has 0 participants,
/// or the barrier is being used by more threads than are registered as participants.
/// </exception>
/// <exception cref="T:System.OperationCanceledException"><paramref name="cancellationToken"/> has been
/// canceled.</exception>
/// <exception cref="T:System.ObjectDisposedException">The current instance has already been
/// disposed.</exception>
public bool SignalAndWait(int millisecondsTimeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
if (millisecondsTimeout < -1)
{
throw new System.ArgumentOutOfRangeException("millisecondsTimeout", millisecondsTimeout,
"Barrier_SignalAndWait_ArgumentOutOfRange");
}
// in case of this is called from the PHA
if (m_actionCallerID != 0 && Thread.CurrentThread.ManagedThreadId == m_actionCallerID)
{
throw new InvalidOperationException("Barrier_InvalidOperation_CalledFromPHA");
}
// local variables to extract the basic barrier variable and update them
// The are declared here instead of inside the loop body because the will be used outside the loop
bool sense;
int total;
int current;
int currentTotal;
SpinWait spinner = new SpinWait();
while (true)
{
currentTotal = m_currentTotalCount;
GetCurrentTotal(currentTotal, out current, out total, out sense);
// throw if zero participants
if (total == 0)
{
throw new InvalidOperationException("Barrier_SignalAndWait_InvalidOperation_ZeroTotal");
}
// Try to detect if the number of threads for this phase exceeded the total number of participants or not
// This can be detected if the current is zero which means all participants for that phase has arrived and the phase number is not changed yet
if (current == 0 && sense != (m_currentPhase % 2 == 0))
{
throw new InvalidOperationException("Barrier_SignalAndWait_InvalidOperation_ThreadsExceeded");
}
//This is the last thread, finish the phase
if (current + 1 == total)
{
if (SetCurrentTotal(currentTotal, 0, total, !sense))
{
#if !FEATURE_PAL // PAL doesn't support eventing
if (CdsSyncEtwBCLProvider.Log.IsEnabled())
{
CdsSyncEtwBCLProvider.Log.Barrier_PhaseFinished(sense, m_currentPhase);
}
#endif
FinishPhase(sense);
return(true);
}
}
else if (SetCurrentTotal(currentTotal, current + 1, total, sense))
{
break;
}
spinner.SpinOnce();
}
// save the phase locally
long phase = m_currentPhase;
// ** Perform the real wait **
// select the correct event to wait on, based on the current sense.
ManualResetEventSlim eventToWaitOn = (sense) ? m_evenEvent : m_oddEvent;
bool waitWasCanceled = false;
bool waitResult = false;
try
{
waitResult = eventToWaitOn.Wait(millisecondsTimeout, cancellationToken);
}
catch (OperationCanceledException)
{
waitWasCanceled = true;
}
if (!waitResult)
{
//reset the spinLock to prepare it for the next loop
spinner.Reset();
//If the wait timeout expired and all other thread didn't reach the barrier yet, update the current count back
while (true)
{
bool newSense;
currentTotal = m_currentTotalCount;
GetCurrentTotal(currentTotal, out current, out total, out newSense);
// If the timeout expired and the phase has just finished, return true and this is considered as succeeded SignalAndWait
//otherwise the timeout expired and the current phase has not been finished yet, return false
//The phase is finished if the phase member variable is changed (incremented) or the sense has been changed
if (phase != m_currentPhase || sense != newSense)
{
// The current phase has been finished, but we shouldn't return before the events are set/reset otherwise this thread could start
// next phase and the appropriate event has not reset yet which could make it return immediately from the next phase SignalAndWait
// before waiting other threads
eventToWaitOn.Wait();
Debug.Assert(phase < m_currentPhase); // assert that the phase has been completely finished
//if here, then all the other participants had reached the barrier and moved to the
//next phase. Hence we cannot (and should not) backout the signal and can return true.
break;
}
//The phase has not been finished yet, try to update the current count.
if (SetCurrentTotal(currentTotal, current - 1, total, sense))
{
//if here, then the attempt to backout was successful.
//throw (a fresh) oce if cancellation woke the wait
//or return false if it was the timeout that woke the wait.
//
if (waitWasCanceled)
{
#if PFX_LEGACY_3_5
throw new OperationCanceledException2("Common_OperationCanceled", cancellationToken);
#else
throw new OperationCanceledException("Common_OperationCanceled", cancellationToken);
#endif
}
else
{
return(false);
}
}
spinner.SpinOnce();
}
}
if (m_exception != null)
{
throw new BarrierPostPhaseException(m_exception);
}
return(true);
}
/// <summary>
/// Signals that a participant has reached the barrier and waits for all other participants to reach
/// the barrier as well, using a
/// 32-bit signed integer to measure the time interval, while observing a <see
/// cref="T:System.Threading.CancellationToken"/>.
/// </summary>
/// <param name="millisecondsTimeout">The number of milliseconds to wait, or <see
/// cref="Timeout.Infinite"/>(-1) to wait indefinitely.</param>
/// <param name="cancellationToken">The <see cref="T:System.Threading.CancellationToken"/> to
/// observe.</param>
/// <returns>true if all other participants reached the barrier; otherwise, false.</returns>
/// <exception cref="T:System.ArgumentOutOfRangeException"><paramref name="millisecondsTimeout"/> is a
/// negative number other than -1, which represents an infinite time-out.</exception>
/// <exception cref="T:System.InvalidOperationException">
/// The method was invoked from within a post-phase action, the barrier currently has 0 participants,
/// or the barrier is being used by more threads than are registered as participants.
/// </exception>
/// <exception cref="T:System.OperationCanceledException"><paramref name="cancellationToken"/> has been
/// canceled.</exception>
/// <exception cref="T:System.ObjectDisposedException">The current instance has already been
/// disposed.</exception>
public bool SignalAndWait(int millisecondsTimeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException2(nameof(millisecondsTimeout), millisecondsTimeout,
SR.Barrier_SignalAndWait_ArgumentOutOfRange);
}
// in case of this is called from the PHA
if (_actionCallerID != 0 && Environment2.CurrentManagedThreadId == _actionCallerID)
{
throw new InvalidOperationException(SR.Barrier_InvalidOperation_CalledFromPHA);
}
// local variables to extract the basic barrier variable and update them
// The are declared here instead of inside the loop body because the will be used outside the loop
bool sense; // The sense of the barrier *before* the phase associated with this SignalAndWait call completes
int total;
int current;
int currentTotal;
long phase;
SpinWait spinner = new SpinWait();
while (true)
{
currentTotal = _currentTotalCount;
GetCurrentTotal(currentTotal, out current, out total, out sense);
phase = CurrentPhaseNumber;
// throw if zero participants
if (total == 0)
{
throw new InvalidOperationException(SR.Barrier_SignalAndWait_InvalidOperation_ZeroTotal);
}
// Try to detect if the number of threads for this phase exceeded the total number of participants or not
// This can be detected if the current is zero which means all participants for that phase has arrived and the phase number is not changed yet
if (current == 0 && sense != (CurrentPhaseNumber % 2 == 0))
{
throw new InvalidOperationException(SR.Barrier_SignalAndWait_InvalidOperation_ThreadsExceeded);
}
//This is the last thread, finish the phase
if (current + 1 == total)
{
if (SetCurrentTotal(currentTotal, 0, total, !sense))
{
//if (CdsSyncEtwBCLProvider.Log.IsEnabled())
//{
// CdsSyncEtwBCLProvider.Log.Barrier_PhaseFinished(sense, CurrentPhaseNumber);
//}
FinishPhase(sense);
return(true);
}
}
else if (SetCurrentTotal(currentTotal, current + 1, total, sense))
{
break;
}
spinner.SpinOnce();
}
// ** Perform the real wait **
// select the correct event to wait on, based on the current sense.
ManualResetEventSlim eventToWaitOn = (sense) ? _evenEvent : _oddEvent;
bool waitWasCanceled = false;
bool waitResult = false;
try
{
waitResult = DiscontinuousWait(eventToWaitOn, millisecondsTimeout, cancellationToken, phase);
}
catch (OperationCanceledException)
{
waitWasCanceled = true;
}
catch (ObjectDisposedException)// in case a race happen where one of the thread returned from SignalAndWait and the current thread calls Wait on a disposed event
{
// make sure the current phase for this thread is already finished, otherwise propagate the exception
if (phase < CurrentPhaseNumber)
{
waitResult = true;
}
else
{
throw;
}
}
if (!waitResult)
{
//reset the spinLock to prepare it for the next loop
spinner.Reset();
//If the wait timeout expired and all other thread didn't reach the barrier yet, update the current count back
while (true)
{
bool newSense;
currentTotal = _currentTotalCount;
GetCurrentTotal(currentTotal, out current, out total, out newSense);
// If the timeout expired and the phase has just finished, return true and this is considered as succeeded SignalAndWait
//otherwise the timeout expired and the current phase has not been finished yet, return false
//The phase is finished if the phase member variable is changed (incremented) or the sense has been changed
// we have to use the statements in the comparison below for two cases:
// 1- The sense is changed but the last thread didn't update the phase yet
// 2- The phase is already incremented but the sense flipped twice due to the termination of the next phase
if (phase < CurrentPhaseNumber || sense != newSense)
{
// The current phase has been finished, but we shouldn't return before the events are set/reset otherwise this thread could start
// next phase and the appropriate event has not reset yet which could make it return immediately from the next phase SignalAndWait
// before waiting other threads
WaitCurrentPhase(eventToWaitOn, phase);
Debug.Assert(phase < CurrentPhaseNumber);
break;
}
//The phase has not been finished yet, try to update the current count.
if (SetCurrentTotal(currentTotal, current - 1, total, sense))
{
//if here, then the attempt to back out was successful.
//throw (a fresh) OCE if cancellation woke the wait
//or return false if it was the timeout that woke the wait.
//
if (waitWasCanceled)
{
throw new InternalOCE(SR.Common_OperationCanceled, cancellationToken);
}
else
{
return(false);
}
}
spinner.SpinOnce();
}
}
if (_exception != null)
{
throw new BarrierPostPhaseException(_exception);
}
return(true);
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
private void InternalDispose()
{
if(Interlocked.CompareExchange(ref isClosed,1,0) == 0)
{
//closing = true;
if (LOG.IsDebugEnabled)
LOG.DebugFormat("Closing client for session: 0x{0:X}", SessionId);
try
{
SubmitRequest(new RequestHeader { Type = (int)OpCode.CloseSession }, null, null, null);
SpinWait spin = new SpinWait();
DateTime timeoutAt = DateTime.UtcNow.Add(SessionTimeout);
while (!producer.IsConnectionClosedByServer)
{
spin.SpinOnce();
if (spin.Count > MaximumSpin)
{
if (timeoutAt <= DateTime.UtcNow)
{
throw new TimeoutException(
string.Format("Timed out in Dispose() while closing session: 0x{0:X}", SessionId));
}
spin.Reset();
}
}
}
catch (ThreadInterruptedException)
{
// ignore, close the send/event threads
}
catch (Exception ex)
{
LOG.WarnFormat("Error disposing {0} : {1}", this.GetType().FullName, ex.Message);
}
finally
{
producer.Dispose();
consumer.Dispose();
}
}
}
public bool SignalAndWait(int millisecondsTimeout, CancellationToken cancellationToken)
{
bool flag;
int num;
int num2;
int currentTotalCount;
this.ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException("millisecondsTimeout", millisecondsTimeout, SR.GetString("Barrier_SignalAndWait_ArgumentOutOfRange"));
}
if ((this.m_actionCallerID != 0) && (Thread.CurrentThread.ManagedThreadId == this.m_actionCallerID))
{
throw new InvalidOperationException(SR.GetString("Barrier_InvalidOperation_CalledFromPHA"));
}
SpinWait wait = new SpinWait();
while (true)
{
currentTotalCount = this.m_currentTotalCount;
this.GetCurrentTotal(currentTotalCount, out num2, out num, out flag);
if (num == 0)
{
throw new InvalidOperationException(SR.GetString("Barrier_SignalAndWait_InvalidOperation_ZeroTotal"));
}
if ((num2 == 0) && (flag != ((this.m_currentPhase % 2L) == 0L)))
{
throw new InvalidOperationException(SR.GetString("Barrier_SignalAndWait_InvalidOperation_ThreadsExceeded"));
}
if ((num2 + 1) == num)
{
if (this.SetCurrentTotal(currentTotalCount, 0, num, !flag))
{
if (CdsSyncEtwBCLProvider.Log.IsEnabled())
{
CdsSyncEtwBCLProvider.Log.Barrier_PhaseFinished(flag, this.m_currentPhase);
}
this.FinishPhase(flag);
return(true);
}
}
else if (this.SetCurrentTotal(currentTotalCount, num2 + 1, num, flag))
{
break;
}
wait.SpinOnce();
}
long currentPhase = this.m_currentPhase;
ManualResetEventSlim slim = flag ? this.m_evenEvent : this.m_oddEvent;
bool flag2 = false;
bool flag3 = false;
try
{
flag3 = slim.Wait(millisecondsTimeout, cancellationToken);
}
catch (OperationCanceledException)
{
flag2 = true;
}
if (!flag3)
{
wait.Reset();
while (true)
{
bool flag4;
currentTotalCount = this.m_currentTotalCount;
this.GetCurrentTotal(currentTotalCount, out num2, out num, out flag4);
if ((currentPhase != this.m_currentPhase) || (flag != flag4))
{
slim.Wait();
break;
}
if (this.SetCurrentTotal(currentTotalCount, num2 - 1, num, flag))
{
if (flag2)
{
throw new OperationCanceledException(SR.GetString("Common_OperationCanceled"), cancellationToken);
}
return(false);
}
wait.SpinOnce();
}
}
if (this.m_exception != null)
{
throw new BarrierPostPhaseException(this.m_exception);
}
return(true);
}
public bool SignalAndWait(int millisecondsTimeout, CancellationToken cancellationToken)
{
bool flag;
int num;
int num2;
int currentTotalCount;
this.ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException("millisecondsTimeout", millisecondsTimeout, SR.GetString("Barrier_SignalAndWait_ArgumentOutOfRange"));
}
if ((this.m_actionCallerID != 0) && (Thread.CurrentThread.ManagedThreadId == this.m_actionCallerID))
{
throw new InvalidOperationException(SR.GetString("Barrier_InvalidOperation_CalledFromPHA"));
}
SpinWait wait = new SpinWait();
while (true)
{
currentTotalCount = this.m_currentTotalCount;
this.GetCurrentTotal(currentTotalCount, out num2, out num, out flag);
if (num == 0)
{
throw new InvalidOperationException(SR.GetString("Barrier_SignalAndWait_InvalidOperation_ZeroTotal"));
}
if ((num2 == 0) && (flag != ((this.m_currentPhase % 2L) == 0L)))
{
throw new InvalidOperationException(SR.GetString("Barrier_SignalAndWait_InvalidOperation_ThreadsExceeded"));
}
if ((num2 + 1) == num)
{
if (this.SetCurrentTotal(currentTotalCount, 0, num, !flag))
{
if (CdsSyncEtwBCLProvider.Log.IsEnabled())
{
CdsSyncEtwBCLProvider.Log.Barrier_PhaseFinished(flag, this.m_currentPhase);
}
this.FinishPhase(flag);
return true;
}
}
else if (this.SetCurrentTotal(currentTotalCount, num2 + 1, num, flag))
{
break;
}
wait.SpinOnce();
}
long currentPhase = this.m_currentPhase;
ManualResetEventSlim slim = flag ? this.m_evenEvent : this.m_oddEvent;
bool flag2 = false;
bool flag3 = false;
try
{
flag3 = slim.Wait(millisecondsTimeout, cancellationToken);
}
catch (OperationCanceledException)
{
flag2 = true;
}
if (!flag3)
{
wait.Reset();
while (true)
{
bool flag4;
currentTotalCount = this.m_currentTotalCount;
this.GetCurrentTotal(currentTotalCount, out num2, out num, out flag4);
if ((currentPhase != this.m_currentPhase) || (flag != flag4))
{
slim.Wait();
break;
}
if (this.SetCurrentTotal(currentTotalCount, num2 - 1, num, flag))
{
if (flag2)
{
throw new OperationCanceledException(SR.GetString("Common_OperationCanceled"), cancellationToken);
}
return false;
}
wait.SpinOnce();
}
}
if (this.m_exception != null)
{
throw new BarrierPostPhaseException(this.m_exception);
}
return true;
}
public void PwmProc()
{
// totalCycle = (1/n)*1000 = Total MS for the full cycle
// onCycle = totalCycle * (DutyCycle / 100)
// offCycle = totalCycle - onCycle;
SpinWait sp = new SpinWait();
Stopwatch sw = new Stopwatch();
int totalCycleTicks = (int)((1f / Frequency) * Stopwatch.Frequency);
int onTicks = (int)Math.Round(totalCycleTicks * (DutyCycle / 100f));
int offTicks = totalCycleTicks - onTicks;
Debug.WriteLine("On Ticks: " + onTicks);
while (IsRunning)
{
/**** ON ****/
// Turn the pin on for the duty cycle
Pin(true);
// Let the pin stay high until we stop or
sw.Reset();
sp.Reset();
sw.Start();
while (sw.ElapsedTicks < onTicks) ;
//sp.SpinOnce();
//Debug.WriteLine("Total Spin On: " + sw.ElapsedTicks + " and needed " + onTicks);
/**** OFF ****/
// Turn the pin off for the rest period
Pin(false);
sw.Reset();
sp.Reset();
sw.Start();
while (sw.ElapsedTicks < offTicks) ;
//sp.SpinOnce();
//Debug.WriteLine("Total Spin Off: " + sw.ElapsedTicks + " and needed " + offTicks);
}
// Turn off the PIN when we're done
Pin(false);
}
protected void OnRunning()
{
SpinWait wait = new SpinWait();
while (true)
{
int state = m_state;
if (state == State.ScheduledToRun && Interlocked.CompareExchange(ref m_state, State.Running, State.ScheduledToRun) == State.ScheduledToRun)
break;
if (state == State.ScheduledToRunAfterDelay && Interlocked.CompareExchange(ref m_state, State.Running, State.ScheduledToRunAfterDelay) == State.ScheduledToRunAfterDelay)
break;
wait.SpinOnce();
}
wait.Reset();
m_runAgain = false;
m_runAgainAfterDelay = -1;
Thread.MemoryBarrier();
m_args.StartDisposalCallSuccessful = m_startDisposalCallSuccessful;
bool failedRun = !m_callback.TryInvoke(m_args);
if (m_args.ShouldDispose || failedRun)
{
InternalDispose_FromWorkerThread();
Interlocked.Exchange(ref m_state, State.Disposed);
return;
}
Interlocked.Exchange(ref m_state, State.AfterRunning); //Notifies that the RunAgain and RunAgainAfterDelay variables are going to be used
// to make decisions. Therefore, if setting these variables after this point, modifying the state machine will be
// necessary
if (m_runAgain)
{
Interlocked.Exchange(ref m_state, State.ScheduledToRun);
InternalStart_FromWorkerThread();
}
else if (m_runAgainAfterDelay >= 0)
{
InternalStart_FromWorkerThread(m_runAgainAfterDelay);
Interlocked.Exchange(ref m_state, State.ScheduledToRunAfterDelay);
}
else
{
InternalDoNothing_FromWorkerThread();
Interlocked.Exchange(ref m_state, State.NotRunning);
}
}
/// <summary>
/// Signals that a participant has reached the barrier and waits for all other participants to reach
/// the barrier as well, using a
/// 32-bit signed integer to measure the time interval, while observing a <see
/// cref="T:System.Threading.CancellationToken"/>.
/// </summary>
/// <param name="millisecondsTimeout">The number of milliseconds to wait, or <see
/// cref="Timeout.Infinite"/>(-1) to wait indefinitely.</param>
/// <param name="cancellationToken">The <see cref="T:System.Threading.CancellationToken"/> to
/// observe.</param>
/// <returns>true if all other participants reached the barrier; otherwise, false.</returns>
/// <exception cref="T:System.ArgumentOutOfRangeException"><paramref name="millisecondsTimeout"/> is a
/// negative number other than -1, which represents an infinite time-out.</exception>
/// <exception cref="T:System.InvalidOperationException">
/// The method was invoked from within a post-phase action, the barrier currently has 0 participants,
/// or the barrier is being used by more threads than are registered as participants.
/// </exception>
/// <exception cref="T:System.OperationCanceledException"><paramref name="cancellationToken"/> has been
/// canceled.</exception>
/// <exception cref="T:System.ObjectDisposedException">The current instance has already been
/// disposed.</exception>
public bool SignalAndWait(int millisecondsTimeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException("millisecondsTimeout", millisecondsTimeout, "The specified timeout must represent a value between -1 and Int32.MaxValue, inclusive.");
}
// in case of this is called from the PHA
if (_actionCallerId != 0 && Thread.CurrentThread.ManagedThreadId == _actionCallerId)
{
throw new InvalidOperationException("This method may not be called from within the postPhaseAction.");
}
// local variables to extract the basic barrier variable and update them
// The are declared here instead of inside the loop body because the will be used outside the loop
bool sense; // The sense of the barrier *before* the phase associated with this SignalAndWait call completes
int total;
int current;
int currentTotal;
long phase;
var spinner = new SpinWait();
while (true)
{
currentTotal = Thread.VolatileRead(ref _currentTotalCount);
GetCurrentTotal(currentTotal, out current, out total, out sense);
phase = CurrentPhaseNumber;
// throw if zero participants
if (total == 0)
{
throw new InvalidOperationException("The barrier has no registered participants.");
}
// Try to detect if the number of threads for this phase exceeded the total number of participants or not
// This can be detected if the current is zero which means all participants for that phase has arrived and the phase number is not changed yet
if (current == 0 && sense != (CurrentPhaseNumber % 2 == 0))
{
throw new InvalidOperationException("The number of threads using the barrier exceeded the total number of registered participants.");
}
//This is the last thread, finish the phase
if (current + 1 == total)
{
if (SetCurrentTotal(currentTotal, 0, total, !sense))
{
FinishPhase(sense);
return true;
}
}
else if (SetCurrentTotal(currentTotal, current + 1, total, sense))
{
break;
}
spinner.SpinOnce();
}
// ** Perform the real wait **
// select the correct event to wait on, based on the current sense.
var eventToWaitOn = (sense) ? _evenEvent : _oddEvent;
var waitWasCanceled = false;
var waitResult = false;
try
{
waitResult = DiscontinuousWait(eventToWaitOn, millisecondsTimeout, cancellationToken, phase);
}
catch (OperationCanceledException)
{
waitWasCanceled = true;
}
catch (ObjectDisposedException)// in case a ---- happen where one of the thread returned from SignalAndWait and the current thread calls Wait on a disposed event
{
// make sure the current phase for this thread is already finished, otherwise propagate the exception
if (phase < CurrentPhaseNumber)
waitResult = true;
else
throw;
}
if (!waitResult)
{
//reset the spinLock to prepare it for the next loop
spinner.Reset();
//If the wait timeout expired and all other thread didn't reach the barrier yet, update the current count back
while (true)
{
bool newSense;
currentTotal = Thread.VolatileRead(ref _currentTotalCount);
GetCurrentTotal(currentTotal, out current, out total, out newSense);
// If the timeout expired and the phase has just finished, return true and this is considered as succeeded SignalAndWait
//otherwise the timeout expired and the current phase has not been finished yet, return false
//The phase is finished if the phase member variable is changed (incremented) or the sense has been changed
// we have to use the statements in the comparison below for two cases:
// 1- The sense is changed but the last thread didn't update the phase yet
// 2- The phase is already incremented but the sense flipped twice due to the termination of the next phase
if (phase < CurrentPhaseNumber || sense != newSense)
{
// The current phase has been finished, but we shouldn't return before the events are set/reset otherwise this thread could start
// next phase and the appropriate event has not reset yet which could make it return immediately from the next phase SignalAndWait
// before waiting other threads
WaitCurrentPhase(eventToWaitOn, phase);
Debug.Assert(phase < CurrentPhaseNumber);
break;
}
//The phase has not been finished yet, try to update the current count.
if (SetCurrentTotal(currentTotal, current - 1, total, sense))
{
//if here, then the attempt to backout was successful.
//throw (a fresh) oce if cancellation woke the wait
//or return false if it was the timeout that woke the wait.
//
if (waitWasCanceled)
throw new NewOperationCanceledException("The operation was canceled.", cancellationToken);
else
return false;
}
spinner.SpinOnce();
}
}
if (_exception != null)
throw new BarrierPostPhaseException(_exception);
return true;
}
/// <summary>
/// Signals that a participant has reached the barrier and waits for all other participants to reach
/// the barrier as well, using a
/// 32-bit signed integer to measure the time interval, while observing a <see
/// cref="T:System.Threading.CancellationToken"/>.
/// </summary>
/// <param name="millisecondsTimeout">The number of milliseconds to wait, or <see
/// cref="Timeout.Infinite"/>(-1) to wait indefinitely.</param>
/// <param name="cancellationToken">The <see cref="T:System.Threading.CancellationToken"/> to
/// observe.</param>
/// <returns>true if all other participants reached the barrier; otherwise, false.</returns>
/// <exception cref="T:System.ArgumentOutOfRangeException"><paramref name="millisecondsTimeout"/> is a
/// negative number other than -1, which represents an infinite time-out.</exception>
/// <exception cref="T:System.InvalidOperationException">
/// The method was invoked from within a post-phase action, the barrier currently has 0 participants,
/// or the barrier is being used by more threads than are registered as participants.
/// </exception>
/// <exception cref="T:System.OperationCanceledException"><paramref name="cancellationToken"/> has been
/// canceled.</exception>
/// <exception cref="T:System.ObjectDisposedException">The current instance has already been
/// disposed.</exception>
public bool SignalAndWait(int millisecondsTimeout, CancellationToken cancellationToken)
{
ThrowIfDisposed();
cancellationToken.ThrowIfCancellationRequested();
if (millisecondsTimeout < -1)
{
throw new System.ArgumentOutOfRangeException("millisecondsTimeout", millisecondsTimeout,
"Barrier_SignalAndWait_ArgumentOutOfRange");
}
// in case of this is called from the PHA
if (m_actionCallerID != 0 && Thread.CurrentThread.ManagedThreadId == m_actionCallerID)
{
throw new InvalidOperationException("Barrier_InvalidOperation_CalledFromPHA");
}
// local variables to extract the basic barrier variable and update them
// The are declared here instead of inside the loop body because the will be used outside the loop
bool sense;
int total;
int current;
int currentTotal;
SpinWait spinner = new SpinWait();
while (true)
{
currentTotal = m_currentTotalCount;
GetCurrentTotal(currentTotal, out current, out total, out sense);
// throw if zero participants
if (total == 0)
{
throw new InvalidOperationException("Barrier_SignalAndWait_InvalidOperation_ZeroTotal");
}
// Try to detect if the number of threads for this phase exceeded the total number of participants or not
// This can be detected if the current is zero which means all participants for that phase has arrived and the phase number is not changed yet
if (current == 0 && sense != (m_currentPhase % 2 == 0))
{
throw new InvalidOperationException("Barrier_SignalAndWait_InvalidOperation_ThreadsExceeded");
}
//This is the last thread, finish the phase
if (current + 1 == total)
{
if (SetCurrentTotal(currentTotal, 0, total, !sense))
{
#if !FEATURE_PAL // PAL doesn't support eventing
if (CdsSyncEtwBCLProvider.Log.IsEnabled())
{
CdsSyncEtwBCLProvider.Log.Barrier_PhaseFinished(sense, m_currentPhase);
}
#endif
FinishPhase(sense);
return true;
}
}
else if (SetCurrentTotal(currentTotal, current + 1, total, sense))
{
break;
}
spinner.SpinOnce();
}
// save the phase locally
long phase = m_currentPhase;
// ** Perform the real wait **
// select the correct event to wait on, based on the current sense.
ManualResetEventSlim eventToWaitOn = (sense) ? m_evenEvent : m_oddEvent;
bool waitWasCanceled = false;
bool waitResult = false;
try
{
waitResult = eventToWaitOn.Wait(millisecondsTimeout, cancellationToken);
}
catch (OperationCanceledException )
{
waitWasCanceled = true;
}
if (!waitResult)
{
//reset the spinLock to prepare it for the next loop
spinner.Reset();
//If the wait timeout expired and all other thread didn't reach the barrier yet, update the current count back
while (true)
{
bool newSense;
currentTotal = m_currentTotalCount;
GetCurrentTotal(currentTotal, out current, out total, out newSense);
// If the timeout expired and the phase has just finished, return true and this is considered as succeeded SignalAndWait
//otherwise the timeout expired and the current phase has not been finished yet, return false
//The phase is finished if the phase member variable is changed (incremented) or the sense has been changed
if (phase != m_currentPhase || sense != newSense)
{
// The current phase has been finished, but we shouldn't return before the events are set/reset otherwise this thread could start
// next phase and the appropriate event has not reset yet which could make it return immediately from the next phase SignalAndWait
// before waiting other threads
eventToWaitOn.Wait();
Debug.Assert(phase < m_currentPhase); // assert that the phase has been completely finished
//if here, then all the other participants had reached the barrier and moved to the
//next phase. Hence we cannot (and should not) backout the signal and can return true.
break;
}
//The phase has not been finished yet, try to update the current count.
if (SetCurrentTotal(currentTotal, current - 1, total, sense))
{
//if here, then the attempt to backout was successful.
//throw (a fresh) oce if cancellation woke the wait
//or return false if it was the timeout that woke the wait.
//
if (waitWasCanceled)
{
#if PFX_LEGACY_3_5
throw new OperationCanceledException2("Common_OperationCanceled", cancellationToken);
#else
throw new OperationCanceledException("Common_OperationCanceled", cancellationToken);
#endif
}
else
return false;
}
spinner.SpinOnce();
}
}
if (m_exception != null)
throw new BarrierPostPhaseException(m_exception);
return true;
}
/// <summary>
/// Wait for MD5 calculation to be finished.
/// In our test, MD5 calculation is really fast,
/// and SpinOnce has sleep mechanism, so use Spin instead of sleep here.
/// </summary>
private void WaitMD5CalculationToFinish()
{
if (this.finishedSeparateMd5Calculator)
{
return;
}
SpinWait sw = new SpinWait();
while (!this.finishedSeparateMd5Calculator)
{
sw.SpinOnce();
}
sw.Reset();
}
