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// -*- C++ -*-
//=============================================================================
/**
* @file Wait_On_LF_No_Upcall.h
*
* @author Chris Cleeland <cleeland@ociweb.com>
*/
//=============================================================================
#ifndef TAO_WAIT_ON_LF_NO_UPCALL_H
#define TAO_WAIT_ON_LF_NO_UPCALL_H
#include /**/ "ace/pre.h"
#include "tao/Wait_On_Leader_Follower.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
namespace TAO
{
/**
* @class TAO_Wait_On_LF_No_Upcall
*
* @brief Wait according to the Leader-Follower model (like
* TAO_Wait_On_Leader_Follower), but do not allow nested upcalls.
*
* This implementation sets a thread-specific flag on entering wait()
* that indicates that the thread is unavailable to service upcalls.
* Connection handler that are acting in a server role cooperate by
* checking this flag in their handle_input, and returning if they're
* in a thread that is currently suspending upcalls. The flag gets
* reset once the reply is received.
*/
class Wait_On_LF_No_Upcall : public TAO_Wait_On_Leader_Follower
{
public:
/// Constructor.
explicit Wait_On_LF_No_Upcall (TAO_Transport *t);
/// Destructor.
~Wait_On_LF_No_Upcall () override = default;
/*! @copydoc TAO_Wait_Strategy::wait() */
int wait (ACE_Time_Value *max_wait_time, TAO_Synch_Reply_Dispatcher &rd) override;
/*! @copydoc TAO_Wait_Strategy::can_process_upcalls() */
bool can_process_upcalls () const override;
/*! @copydoc TAO_Wait_Strategy::defer_upcall() */
int defer_upcall (ACE_Event_Handler*) override;
};
}
TAO_END_VERSIONED_NAMESPACE_DECL
#include /**/ "ace/post.h"
#endif /* TAO_WAIT_ON_LF_NO_UPCALL_H */
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