Class: HTTPClient::TimeoutScheduler

Inherits:
Object
  • Object
show all
Defined in:
lib/httpclient/timeout.rb

Overview

Replaces timeout.rb to avoid Thread creation and scheduling overhead.

You should check another timeout replace in WEBrick. See lib/webrick/utils.rb in ruby/1.9.

About this implementation:

  • Do not create Thread for each timeout() call. Just create 1 Thread for timeout scheduler.

  • Do not wakeup the scheduler thread so often. Let scheduler thread sleep until the nearest period.

Defined Under Namespace

Classes: Period

Instance Method Summary collapse

Constructor Details

#initializeTimeoutScheduler

Creates new TimeoutScheduler.


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# File 'lib/httpclient/timeout.rb', line 56

def initialize
  @pool = {}
  @next = nil
  @thread = start_timer_thread
end

Instance Method Details

#cancel(period) ⇒ Object

Cancels the given period.


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# File 'lib/httpclient/timeout.rb', line 78

def cancel(period)
  @pool.delete(period)
  period.cancel
end

#register(thread, sec, ex) ⇒ Object

Registers new timeout period.


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# File 'lib/httpclient/timeout.rb', line 63

def register(thread, sec, ex)
  period = Period.new(thread, Time.now + sec, ex || ::Timeout::Error)
  @pool[period] = true
  if @next.nil? or period.time < @next
    begin
      @thread.wakeup
    rescue ThreadError
      # Thread may be dead by fork.
      @thread = start_timer_thread
    end
  end
  period
end