/// <summary>
/// Called when [timer callback].
/// </summary>
/// <param name="currTime">The curr time.</param>
internal void OnTimerCallback(long currTime)
{
if (!SlimLock.Enter(0))
{
return;
}
try
{
while (true)
{
currTime = PerformanceObserver.MicroTime;
if (currTime < NextTime)
{
break;
}
NextTime += Interval;
var callback = TimerCallback;
if (callback != null)
{
callback.Invoke(null);
}
}
}
finally {
SlimLock.Release();
}
}
private T SetValue(T value, int thread)
{
// Setting values causes the _hashIndex to become unstable ... we
// should probably avoid chaining if at all possible too so that the
// only element in the hash index is the element itself ...
var nodeTable = _nodeTable;
var hashIndex = _hashIndex;
// Look for the node in the current space
var hashCode = thread & 0x7fffffff;
// Get the appropriate node index - remember there are no direct node references
var chainIndex = hashIndex[hashCode % hashIndex.Length];
// Skip entries that do not share the same hashcode
if (chainIndex != -1)
{
if (nodeTable[chainIndex].HashCode == hashCode)
{
if (nodeTable[chainIndex].ThreadId == thread)
{
nodeTable[chainIndex].Value = value;
return(value);
}
}
}
_wLock.Enter();
try {
// Allocate a node
var nodeIndex = AllocNode(thread, value, hashCode);
// MapIndex the node
while (true)
{
hashIndex = _hashIndex;
chainIndex = hashCode % hashIndex.Length;
if (hashIndex[chainIndex] == -1)
{
hashIndex[chainIndex] = nodeIndex;
return(value);
}
ReIndex();
}
} finally {
_wLock.Release();
}
}