Executable.h

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// Copyright (c) Fraunhofer MEVIS, Germany. All rights reserved.
// **InsertLicense** code
 
#pragma once
 
#include <asio/Processor.h>
 
 
namespace asio {
 
  template<typename... Args>
  class ExecutableType;
 
  // vtordisp(2) enables the vtordisp members for all vitual bases
  // with virtual functions to ensure correct performance of 
  // dynamic_cast on a partially constructed object. Otherwise
  // a warning is generated for each compilation unit.
 
#ifdef _MSC_VER
#pragma vtordisp(push, 2)
#endif
  template<typename... Args>
  class ExecutableType<ParameterPack<Args...>> : public virtual Processor
  {
  public:
 
    using InputSignature = ParameterPack<Args...>;
 
    // todo: deprecate this!
    using Signature = InputSignature;
 
    virtual void execute(Args... args) = 0;
  };
#ifdef _MSC_VER
#pragma vtordisp(pop)
#endif
 
  template<typename... Args>
  using ConstRefExecutable = ExecutableType<ParameterPack<const Args&...>>;
 
  template<typename... Args>
  using ByValueExecutable = ExecutableType<ParameterPack<Args...>>;
 
  template<typename... Args>
  using Executable = ConstRefExecutable<Args...>;
 
  using EntryPoint = Executable<>;
 
}