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// -*- C++ -*-
//=============================================================================
/**
* @file Non_Servant_Upcall.h
*
* @author Irfan Pyarali
*/
//=============================================================================
#ifndef TAO_NONSERVANT_UPCALL_H
#define TAO_NONSERVANT_UPCALL_H
#include /**/ "ace/pre.h"
#include "tao/PortableServer/portableserver_export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/orbconf.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
// Forward declaration
class TAO_Root_POA;
class TAO_Object_Adapter;
namespace TAO
{
namespace Portable_Server
{
/**
* @class Non_Servant_Upcall
*
* @brief This class helps us with a recursive thread lock without
* using a recursive thread lock. Non_Servant_Upcall has a
* magic constructor and destructor. We unlock the
* Object_Adapter lock for the duration of the non-servant
* (i.e., adapter activator and servant activator) upcalls;
* reacquiring once the upcalls complete. Even though we are
* releasing the lock, other threads will not be able to make
* progress since
* <Object_Adapter::non_servant_upcall_in_progress_> has been
* set.
*/
class TAO_PortableServer_Export Non_Servant_Upcall
{
public:
/// Constructor.
Non_Servant_Upcall (::TAO_Root_POA &poa);
/// Destructor.
~Non_Servant_Upcall ();
::TAO_Root_POA &poa () const;
protected:
TAO_Object_Adapter &object_adapter_;
TAO_Root_POA &poa_;
Non_Servant_Upcall *previous_;
};
}
}
TAO_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
# include "tao/PortableServer/Non_Servant_Upcall.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* TAO_NONSERVANT_UPCALL_H */
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