so_5/disp/main.cpp

/*
 * A sample of working with dispatchers.
 */

#include <iostream>
#include <sstream>

// Main SObjectizer header file.
#include <so_5/all.hpp>

// A class for an agent.
class a_disp_user_t final : public so_5::agent_t
{
  public:
    a_disp_user_t( context_t ctx, std::string name )
      : so_5::agent_t( ctx )
      , m_name( std::move(name) )
    {}

    // A reaction to start of work in SObjectizer.
    void so_evt_start() override
    {
      SO_5_LOG_ERROR( so_environment(), log_stream )
      { log_stream << m_name << ".so_evt_start(): start pause"; }

      // Sleeping for some time.
      std::this_thread::sleep_for( std::chrono::seconds( 1 ) );

      SO_5_LOG_ERROR( so_environment(), log_stream )
      { log_stream << m_name << ".so_evt_start(): finish pause"; }
    }

    // A reaction to finish of work in SObjectizer.
    void so_evt_finish() override
    {
      SO_5_LOG_ERROR( so_environment(), log_stream )
      { log_stream << m_name << ".so_evt_finish(): start pause"; }

      // Sleeping for some time.
      std::this_thread::sleep_for( std::chrono::seconds( 1 ) );

      SO_5_LOG_ERROR( so_environment(), log_stream )
      { log_stream << m_name << ".so_evt_finish(): finish pause"; }
    }

  private:
    const std::string m_name;
};

// The helper function for making name of an agent.
std::string create_agent_name( const std::string & base, int i )
{
  return base + "_" + std::to_string(i);
}


// The SObjectizer Environment initialization.
void init( so_5::environment_t & env )
{
  // Creating and registering a cooperation.
  env.introduce_coop( []( so_5::coop_t & coop ) {
    // Adding agents which will work on the default dispatcher.
    for( int i = 0; i < 4; ++i )
    {
      coop.make_agent< a_disp_user_t >(
        create_agent_name( "default_disp", i+1 ) );
    }

    // Adding agents which will work on the dispatcher 
    // with name 'single_thread'.
    {
      auto disp = so_5::disp::one_thread::make_dispatcher(
          coop.environment(), "single_thread" );
      for( int i = 0; i < 3; ++i )
      {
        coop.make_agent_with_binder< a_disp_user_t >(
          disp.binder(),
          create_agent_name( "single_thread", i+1 ) );
      }
    }

    // Adding agents which will work on the dispatcher with active groups
    // named as 'active_group'.
    {
      auto disp = so_5::disp::active_group::make_dispatcher(
          coop.environment(), "active_group" );

      // Agents will be bound to a group 'A'.
      for( int i = 0; i < 2; ++i )
      {
        coop.make_agent_with_binder< a_disp_user_t >(
          disp.binder( "A" ),
          create_agent_name( "active_group_A", i+1 ) );
      }

      // Agents will be bound to a group 'B'.
      for( int i = 0; i < 2; ++i )
      {
        coop.make_agent_with_binder< a_disp_user_t >(
          disp.binder( "B" ),
          create_agent_name( "active_group_B", i+1 ) );
      }
    }

    // Adding agents which will work on the dispatcher for active objects.
    // This dispatcher will have name 'active_obj'.
    {
      auto disp = so_5::disp::active_obj::make_dispatcher(
          coop.environment(), "active_obj" );
      for( int i = 0; i < 4; ++i )
      {
        coop.make_agent_with_binder< a_disp_user_t >(
          disp.binder(),
          create_agent_name( "active_obj", i+1 ) );
      }
    }
  });

  // Stopping SObjectizer.
  env.stop();
}

int main()
{
  try
  {
    so_5::launch( &init );
  }
  catch( const std::exception & ex )
  {
    std::cerr << "Error: " << ex.what() << std::endl;
    return 1;
  }

  return 0;
}