text: /**
   * Licensed to Green Energy Corp (www.greenenergycorp.com) under one or
   * more contributor license agreements. See the NOTICE file distributed
   * with this work for additional information regarding copyright ownership.
   * Green Energy Corp licenses this file to you under the Apache License,
   * Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * This project was forked on 01/01/2013 by Automatak, LLC and modifications
   * may have been made to this file. Automatak, LLC licenses these modifications
   * to you under the terms of the License.
   */
  #ifndef OPENPAL_IEXECUTOR_H
  #define OPENPAL_IEXECUTOR_H
  
  #include "ITimer.h"
  #include "TimeDuration.h"
  #include "MonotonicTimestamp.h"
  #include "Action0.h"
  
  namespace openpal
  {
  
  /**
   * Interface for posting events to a queue.  Events can be posted for
   * immediate consumption or some time in the future.  Events are processed
   * in the order they are received.
   *
   */
  class IExecutor
  {
  
  public:
  
  	virtual ~IExecutor() {}
  
  	/// @return a non-absolute timestamp for the monotonic time source
  	virtual MonotonicTimestamp GetTime() = 0;
  
  	/// @return a new timer based on a relative time duration
  	virtual ITimer* Start(const TimeDuration& arDuration, const Action0& action) = 0;
  
  	/// @return a new timer based on an absolute timestamp of the monotonic clock
  	virtual ITimer* Start(const MonotonicTimestamp&, const Action0& action) = 0;
  
  	/// @return Thread-safe way to post an event to be handled asynchronously
  	virtual void Post(const Action0& runnable) = 0;
  
  	template <class Lambda>
  	void PostLambda(Lambda& lambda)
  	{
  		this->Post(Action0::Bind<Lambda>(lambda));
  	}
  };
  
  }
  
  #endif
  