public void AddSearchKeyword(string keyword)
{
//TODO 这里的参数应该可配置
bool firstEnqueue = this.Context.KeywordQueue.Enqueue(keyword, 100);
if (firstEnqueue)
{
SearchJob searching = this.Context.JobQueue.CurrentJob as SearchJob;
if (searching != null && searching.Keyword == keyword)
{
return;
}
KeywordSelectJob job = new KeywordSelectJob(this);
this.Context.JobQueue.Enqueue(job);
if (this.WorkingThread.ThreadState == ThreadState.WaitSleepJoin)
{
this.WorkingThread.Interrupt();
}
}
}
private void GetJobAndWork()
{
while (true)
{
while (this.Context.JobQueue.HasJob)
{
Job job = this.Context.JobQueue.Dequeue();
Crawler.NotifyJobQueueChange(this.Context.JobQueue);
try
{
job.Work();
}
catch (WebException) { }
catch (Exception ex)
{
job.Priority--;
#if DEBUG
//throw ex;
#endif
}
if (!this.Context.JobQueue.HasJob)
{
job = new KeywordSelectJob(this);
job.Priority--;
this.Context.JobQueue.Enqueue(job);
}
}
try
{
Thread.Sleep(System.Threading.Timeout.Infinite);
}
catch (ThreadInterruptedException)
{
continue;
}
}
}
