/// <summary>
/// Implements the ResourceLock's WaitToWrite behavior.
/// </summary>
protected override void OnEnter(Boolean exclusive)
{
if (exclusive)
{
// Indicate that a writer wants to write: WP++
Interlocked.Add(ref m_LockState, c_1WritersPending);
StressPause();
// OK to write if no readers are reading and
// no writers are pending: RR=0, WP=don't care, WW=0
// Set the Writer is writing bit on.
InterlockedEx.MaskedOr(ref m_LockState, c_lsOwnedByWriter, c_WritersPendingMask);
}
else
{
// OK to read if no writers are waiting: RR=don't care, WP=0, WW=0
// If we're good, add 1 to the RR
InterlockedEx.MaskedAdd(ref m_LockState, c_1ReadersReading, c_ReadersReadingMask);
}
StressPause();
}
