InertMessageSvc.cpp

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// Include files

// From Gaudi
#include "GaudiKernel/SvcFactory.h"
// local
#include "InertMessageSvc.h"

// ----------------------------------------------------------------------------
// Implementation file for class: InertMessageSvc
//
// 12/02/2013: Danilo Piparo
// ----------------------------------------------------------------------------
DECLARE_SERVICE_FACTORY( InertMessageSvc )

//---------------------------------------------------------------------------

InertMessageSvc::InertMessageSvc( const std::string& name, ISvcLocator* pSvcLocator )
    : MessageSvc( name, pSvcLocator ), m_isActive( false )
{
}

//---------------------------------------------------------------------------

InertMessageSvc::~InertMessageSvc() {}

//---------------------------------------------------------------------------

StatusCode InertMessageSvc::initialize()
{
  StatusCode sc = MessageSvc::initialize(); // must be executed first
  if ( sc.isFailure() ) return sc;          // error printed already by MessageSvc

  info() << "Activating in a separate thread" << endmsg;
  m_thread = std::thread( std::bind( &InertMessageSvc::m_activate, this ) );

  return StatusCode::SUCCESS;
}

//---------------------------------------------------------------------------

StatusCode InertMessageSvc::InertMessageSvc::finalize()
{

  m_deactivate();

  m_thread.join();

  return MessageSvc::finalize(); // must be called after all other actions
}

//---------------------------------------------------------------------------

void InertMessageSvc::m_activate()
{
  m_isActive = true;
  messageActionPtr thisMessageAction;
  while ( m_isActive or not m_messageActionsQueue.empty() ) {
    m_messageActionsQueue.pop( thisMessageAction );
    ( *thisMessageAction )();
  }
}

//---------------------------------------------------------------------------

void InertMessageSvc::m_deactivate()
{

  if ( m_isActive ) {
    // This would be the last action
    m_messageActionsQueue.push( messageActionPtr( new messageAction( [this]() { m_isActive = false; } ) ) );
  }
}

//---------------------------------------------------------------------------
void InertMessageSvc::reportMessage( const Message& msg, int outputLevel )
{
  // msg has to be copied as the reference may become invalid by the time it's used
  m_messageActionsQueue.push( messageActionPtr(
      new messageAction( [ this, m = Message( msg ), outputLevel ]() { this->i_reportMessage( m, outputLevel ); } ) ) );
}

//---------------------------------------------------------------------------

void InertMessageSvc::reportMessage( const Message& msg )
{
  // msg has to be copied as the reference may become invalid by the time it's used
  m_messageActionsQueue.push( messageActionPtr( new messageAction(
      [ this, m = Message( msg ) ]() { this->i_reportMessage( m, this->outputLevel( m.getSource() ) ); } ) ) );
}

//---------------------------------------------------------------------------

void InertMessageSvc::reportMessage( const StatusCode& code, const std::string& source )
{
  // msg has to be copied as the source may become invalid by the time it's used
  m_messageActionsQueue.push( messageActionPtr(
      new messageAction( [ this, code, s = std::string( source ) ]() { this->i_reportMessage( code, s ); } ) ) );
}

//---------------------------------------------------------------------------