private static bool TryAcquireContended(Lock lck, Object obj, int millisecondsTimeout)
{
#if FEATURE_GET_BLOCKING_OBJECTS
int removeCookie = t_blockingObjects.Add(obj, ReasonForBlocking.OnCrst);
try
{
return(lck.TryAcquire(millisecondsTimeout));
}
finally
{
t_blockingObjects.Remove(removeCookie);
}
#else
return(lck.TryAcquire(millisecondsTimeout));
#endif
}
internal static bool TryAcquireContended(Lock lck, object obj, int millisecondsTimeout)
{
using (new DebugBlockingScope(obj, DebugBlockingItemType.MonitorCriticalSection, millisecondsTimeout, out _))
{
return(lck.TryAcquire(millisecondsTimeout, trackContentions: true));
}
}
public static void TryEnter(Object obj, int millisecondsTimeout, ref bool lockTaken)
{
if (lockTaken)
{
throw new ArgumentException(SR.Argument_MustBeFalse, "lockTaken");
}
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException("millisecondsTimeout", SR.ArgumentOutOfRange_NeedNonNegOrNegative1);
}
#if CORERT
// CORERT-TODO locks
lockTaken = true;
return;
#else
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
lockTaken = true;
return;
}
lockTaken = TryAcquireContended(lck, obj, millisecondsTimeout);
return;
#endif
}
public static void TryEnter(Object obj, TimeSpan timeout, ref bool lockTaken)
{
if (lockTaken)
{
throw new ArgumentException(SR.Argument_MustBeFalse, "lockTaken");
}
long tm = (long)timeout.TotalMilliseconds;
if (tm < -1 || tm > (long)Int32.MaxValue)
{
throw new ArgumentOutOfRangeException("timeout", SR.ArgumentOutOfRange_NeedNonNegOrNegative1);
}
int millisecondsTimeout = (int)tm;
#if CORERT
// CORERT-TODO locks
lockTaken = true;
return;
#else
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
lockTaken = true;
return;
}
lockTaken = TryAcquireContended(lck, obj, millisecondsTimeout);
return;
#endif
}
internal static bool TryAcquireContended(Lock lck, Object obj, int millisecondsTimeout)
{
DebugBlockingItem blockingItem;
using (new DebugBlockingScope(obj, DebugBlockingItemType.MonitorCriticalSection, millisecondsTimeout, out blockingItem))
{
return(lck.TryAcquire(millisecondsTimeout));
}
}
public static bool TryEnter(Object obj, TimeSpan timeout)
{
long tm = (long)timeout.TotalMilliseconds;
if (tm < -1 || tm > (long)Int32.MaxValue)
{
throw new ArgumentOutOfRangeException("timeout", SR.ArgumentOutOfRange_NeedNonNegOrNegative1);
}
int millisecondsTimeout = (int)tm;
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
return(true);
}
return(lck.TryAcquire(millisecondsTimeout));
}
public static void Enter(object obj)
{
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
return;
}
TryAcquireContended(lck, obj, Timeout.Infinite);
}
private static bool TryAcquireContended(Lock lck, Object obj, int millisecondsTimeout)
{
int removeCookie = t_blockingObjects.Add(obj, ReasonForBlocking.OnCrst);
try
{
return(lck.TryAcquire(millisecondsTimeout));
}
finally
{
t_blockingObjects.Remove(removeCookie);
}
}
public static void Enter(Object obj)
{
#if CORERT
// CORERT-TODO locks
return;
#else
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
return;
}
TryAcquireContended(lck, obj, Timeout.Infinite);
return;
#endif
}
public static bool TryEnter(object obj, int millisecondsTimeout)
{
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException(nameof(millisecondsTimeout), SR.ArgumentOutOfRange_NeedNonNegOrNegative1);
}
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
return(true);
}
return(TryAcquireContended(lck, obj, millisecondsTimeout));
}
public static void Enter(object obj, ref bool lockTaken)
{
if (lockTaken)
{
throw new ArgumentException(SR.Argument_MustBeFalse, nameof(lockTaken));
}
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
lockTaken = true;
return;
}
TryAcquireContended(lck, obj, Timeout.Infinite);
lockTaken = true;
}
public static bool TryEnter(Object obj, int millisecondsTimeout)
{
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException("millisecondsTimeout", SR.ArgumentOutOfRange_NeedNonNegOrNegative1);
}
#if CORERT
// CORERT-TODO locks
return(true);
#else
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
return(true);
}
return(TryAcquireContended(lck, obj, millisecondsTimeout));
#endif
}
public static void TryEnter(object obj, int millisecondsTimeout, ref bool lockTaken)
{
if (lockTaken)
{
throw new ArgumentException(SR.Argument_MustBeFalse, nameof(lockTaken));
}
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException(nameof(millisecondsTimeout), SR.ArgumentOutOfRange_NeedNonNegOrNegative1);
}
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
lockTaken = true;
return;
}
lockTaken = TryAcquireContended(lck, obj, millisecondsTimeout);
}
private void PerformCallback(bool timedOut)
{
bool lockAcquired;
var spinner = new SpinWait();
// Prevent the race condition with Unregister and the previous PerformCallback call, which may still be
// holding the _lock.
while (!(lockAcquired = _lock.TryAcquire(0)) && !Volatile.Read(ref _unregistering))
{
spinner.SpinOnce();
}
// If another thread is running Unregister, no need to restart the timer or clean up
if (lockAcquired)
{
try
{
if (!_unregistering)
{
if (_repeating)
{
// Allow this wait to fire again. Restart the timer before executing the callback.
RestartWait();
}
else
{
// This wait will not be fired again. Free the GC handle to allow the GC to collect this object.
Debug.Assert(_gcHandle.IsAllocated);
_gcHandle.Free();
}
}
}
finally
{
_lock.Release();
}
}
_ThreadPoolWaitOrTimerCallback.PerformWaitOrTimerCallback(_callbackHelper, timedOut);
}
public static void Enter(Object obj, ref bool lockTaken)
{
if (lockTaken)
{
throw new ArgumentException(SR.Argument_MustBeFalse, "lockTaken");
}
#if CORERT
// CORERT-TODO locks
lockTaken = true;
return;
#else
Lock lck = GetLock(obj);
if (lck.TryAcquire(0))
{
lockTaken = true;
return;
}
TryAcquireContended(lck, obj, Timeout.Infinite);
lockTaken = true;
return;
#endif
}
private static bool TryAcquireContended(Lock lck, Object obj, int millisecondsTimeout)
{
int removeCookie = t_blockingObjects.Add(obj, ReasonForBlocking.OnCrst);
try
{
return lck.TryAcquire(millisecondsTimeout);
}
finally
{
t_blockingObjects.Remove(removeCookie);
}
}
private static bool TryAcquireContended(Lock lck, Object obj, int millisecondsTimeout)
{
#if FEATURE_GET_BLOCKING_OBJECTS
int removeCookie = t_blockingObjects.Add(obj, ReasonForBlocking.OnCrst);
try
{
return lck.TryAcquire(millisecondsTimeout);
}
finally
{
t_blockingObjects.Remove(removeCookie);
}
#else
return lck.TryAcquire(millisecondsTimeout);
#endif
}
