/// <summary>
/// Create a new <see cref="PrecisionInputTimer"/> class.
/// </summary>
/// <param name="framesPerSecond">Desired frame rate for <see cref="PrecisionTimer"/>.</param>
internal PrecisionInputTimer(int framesPerSecond)
{
// Create synchronization objects
m_timerTickLock = new object();
m_frameWaitHandleA = new ManualResetEventSlim(false);
m_frameWaitHandleB = new ManualResetEventSlim(false);
m_useWaitHandleA = true;
m_framesPerSecond = framesPerSecond;
// Create a new precision timer for this timer state
m_timer = new PrecisionTimer();
m_timer.Resolution = 1;
m_timer.Period = 1;
m_timer.AutoReset = true;
// Attach handler for timer ticks
m_timer.Tick += m_timer_Tick;
m_frameWindowSize = (int)Math.Round(1000.0D / framesPerSecond) * 2;
m_frameMilliseconds = Ticks.MillisecondDistribution(framesPerSecond);
// Start high resolution timer on a separate thread so the start
// time can synchronized to the top of the millisecond
ThreadPool.QueueUserWorkItem(SynchronizeInputTimer);
}
/// <summary>
/// Releases the unmanaged resources used by the <see cref="PrecisionInputTimer"/> object and optionally releases the managed resources.
/// </summary>
/// <param name="disposing">true to release both managed and unmanaged resources; false to release only unmanaged resources.</param>
private void Dispose(bool disposing)
{
if (!m_disposed)
{
try
{
if (disposing)
{
if ((object)m_timer != null)
{
m_timer.Tick -= m_timer_Tick;
m_timer.Dispose();
}
m_timer = null;
if ((object)m_frameWaitHandleA != null)
{
m_frameWaitHandleA.Set();
m_frameWaitHandleA.Dispose();
}
m_frameWaitHandleA = null;
if ((object)m_frameWaitHandleB != null)
{
m_frameWaitHandleB.Set();
m_frameWaitHandleB.Dispose();
}
m_frameWaitHandleB = null;
}
}
finally
{
m_disposed = true; // Prevent duplicate dispose.
}
}
}
