| public static VolatileWrite ( System &address, System value ) : void | ||
| address | System | |
| value | System | |
| return | void | |
private void ExitExtracted(bool useMemoryBarrier)
{
if (useMemoryBarrier)
{
Thread.VolatileWrite(ref _isHeld, 0);
Volatile.Write(ref _ownerThread, null);
}
else
{
_isHeld = 0;
_ownerThread = null;
}
}
public void Reset()
{
if (Thread.VolatileRead(ref _state) == -1)
{
throw new ObjectDisposedException(GetType().FullName);
}
var handle = GetWaitHandle();
if (handle != null)
{
handle.Reset();
}
Thread.VolatileWrite(ref _state, 0);
}
private ManualResetEvent TryGetWaitHandleExtracted()
{
var handle = ThreadingHelper.VolatileRead(ref _handle);
if (handle != null)
{
if (Thread.VolatileRead(ref _requested) == 2)
{
return(handle);
}
handle.Close();
}
Thread.VolatileWrite(ref _requested, -1);
throw new ObjectDisposedException(GetType().FullName);
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (Interlocked.Exchange(ref _state, -1) != -1)
{
Thread.VolatileWrite(ref _requested, -1);
var handle = Interlocked.Exchange(ref _handle, null);
if (handle != null)
{
handle.Close();
}
}
}
}
public void Set()
{
if (Thread.VolatileRead(ref _state) == -1)
{
// Silent fail
}
else
{
var handle = GetWaitHandle();
if (handle != null)
{
handle.Set();
}
Thread.VolatileWrite(ref _state, 1);
}
}
public void Reset(int count)
{
CheckDisposed();
if (count < 0)
{
throw new ArgumentOutOfRangeException("count");
}
Thread.VolatileWrite(ref _currentCount, count);
_initialCount = count;
if (count == 0)
{
_event.Set();
}
else
{
_event.Reset();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Barrier"/> class.
/// </summary>
/// <param name="participantCount">The number of participating threads.</param>
/// <param name="postPhaseAction">The <see cref="T:System.Action`1"/> to be executed after each
/// phase.</param>
/// <exception cref="T:System.ArgumentOutOfRangeException"> <paramref name="participantCount"/> is less than 0
/// or greater than <see cref="T:System.Int32.MaxValue"/>.</exception>
/// <remarks>
/// The <paramref name="postPhaseAction"/> delegate will be executed after
/// all participants have arrived at the barrier in one phase. The participants
/// will not be released to the next phase until the postPhaseAction delegate
/// has completed execution.
/// </remarks>
public Barrier(int participantCount, Action <Barrier> postPhaseAction)
{
// the count must be non negative value
if (participantCount < 0 || participantCount > Max_Participants)
{
throw new ArgumentOutOfRangeException("participantCount", participantCount, "The participantCount argument must be non-negative and less than or equal to 32767.");
}
Thread.VolatileWrite(ref _currentTotalCount, participantCount);
_postPhaseAction = postPhaseAction;
//Lazily initialize the events
_oddEvent = new ManualResetEventSlim(true);
_evenEvent = new ManualResetEventSlim(false);
// Capture the context if the post phase action is not null
if (postPhaseAction != null && !ExecutionContext.IsFlowSuppressed())
{
_ownerThreadContext = ExecutionContext.Capture();
}
_actionCallerId = 0;
}
public static void Write(ref sbyte location, sbyte value) => Thread.VolatileWrite(ref location, value);
public static void Write(ref short location, short value) => Thread.VolatileWrite(ref location, value);
public static void Write(ref long location, long value) => Thread.VolatileWrite(ref location, value);
public static void Write(ref IntPtr location, IntPtr value) => Thread.VolatileWrite(ref location, value);
public static void Write(ref float location, float value) => Thread.VolatileWrite(ref location, value);
public static void Write(ref ushort location, ushort value)
{
Thread.VolatileWrite(ref location, value);
}
public static void Write(ref uint location, uint value) => Thread.VolatileWrite(ref location, value);
public static void Write(ref UIntPtr location, UIntPtr value)
{
Thread.VolatileWrite(ref location, value);
}
public static void Write(ref ulong location, ulong value)
{
Thread.VolatileWrite(ref location, value);
}
public static void Write(ref int location, int value)
{
Thread.VolatileWrite(ref location, value);
}
public static void Write(ref double location, double value) => Thread.VolatileWrite(ref location, value);
public static void Write(ref byte location, byte value)
{
Thread.VolatileWrite(ref location, value);
}
