private static Results MatchMultiProcessor(string userAgent, Handler handler)
{
// Provide an object to signal when the request has completed.
AutoResetEvent waiter = new AutoResetEvent(false);
// Create the request.
Request request = new Request(userAgent, handler, waiter);
if (request.Count > 0)
{
// For each thread add this to the queue.
for (int i = 0; i < Environment.ProcessorCount; i++)
ThreadPool.QueueUserWorkItem(ServiceRequest, request);
// Wait until a signal is received. Keeping coming back to
// this thread so that a request to close the request
// can be processed.
while (waiter.WaitOne(1, false) == false)
{
// Do nothing
}
;
}
// Return the results.
return request.Results;
}
private static void ServiceRequest(Request request)
{
string userAgent = request.UserAgent;
DeviceInfo current = request.Next();
while (current != null)
{
// Perform the edit distance check.
int distance = Algorithms.EditDistance(current.UserAgent, userAgent, request.Results.MinDistance);
if (distance <= request.Results.MinDistance)
{
lock (request.Results)
{
if (distance < request.Results.MinDistance)
{
request.Results.MinDistance = distance;
request.Results.Clear();
request.Results.Add(current);
}
else if (distance == request.Results.MinDistance)
{
request.Results.Add(current);
}
}
}
current = request.Next();
request.Complete();
}
}
private static Results MatchSingleProcessor(string userAgent, Handler handler)
{
// Create a single matcher and start it.
Request request = new Request(userAgent, handler);
// Process the request.
ServiceRequest(request);
// Return the results.
return request.Results;
}
