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/* -*- C++ -*- */
//=============================================================================
/**
* @file Stream_Modules.h
*
* $Id$
*
* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
*/
//=============================================================================
// This needs to go outside of the #if !defined() block. Don't ask...
#include "ace/Task.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#ifndef ACE_STREAM_MODULES
#define ACE_STREAM_MODULES
#include "ace/pre.h"
/**
* @class ACE_Stream_Head
*
* @brief Standard module that acts as the head of a ustream.
*/
template <ACE_SYNCH_DECL>
class ACE_Stream_Head : public ACE_Task<ACE_SYNCH_USE>
{
public:
/// Construction
ACE_Stream_Head (void);
/// Destruction
~ACE_Stream_Head (void);
// = ACE_Task hooks
virtual int open (void *a = 0);
virtual int close (u_long flags = 0);
virtual int put (ACE_Message_Block *msg, ACE_Time_Value * = 0);
virtual int svc (void);
// = Dynamic linking hooks
virtual int init (int argc, ACE_TCHAR *argv[]);
virtual int info (ACE_TCHAR **info_string, size_t length) const;
virtual int fini (void);
/// Dump the state of an object.
void dump (void) const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
private:
/// Performs canonical flushing at the ACE_Stream Head.
int control (ACE_Message_Block *);
int canonical_flush (ACE_Message_Block *);
};
/**
* @class ACE_Stream_Tail
*
* @brief Standard module that acts as the head of a ustream.
*/
template <ACE_SYNCH_DECL>
class ACE_Stream_Tail : public ACE_Task<ACE_SYNCH_USE>
{
public:
/// Construction
ACE_Stream_Tail (void);
/// Destruction
~ACE_Stream_Tail (void);
// = ACE_Task hooks
virtual int open (void *a = 0);
virtual int close (u_long flags = 0);
virtual int put (ACE_Message_Block *msg, ACE_Time_Value * = 0);
virtual int svc (void);
// = Dynamic linking hooks
virtual int init (int argc, ACE_TCHAR *argv[]);
virtual int info (ACE_TCHAR **info_string, size_t length) const;
virtual int fini (void);
/// Dump the state of an object.
void dump (void) const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
private:
/// Performs canonical flushing at the ACE_Stream tail.
int control (ACE_Message_Block *);
int canonical_flush (ACE_Message_Block *);
};
/**
* @class ACE_Thru_Task
*
* @brief Standard module that acts as a "no op", simply passing on all
* data to its adjacent neighbor.
*/
template <ACE_SYNCH_DECL>
class ACE_Thru_Task : public ACE_Task<ACE_SYNCH_USE>
{
public:
/// Construction
ACE_Thru_Task (void);
/// Destruction
~ACE_Thru_Task (void);
// = ACE_Task hooks
virtual int open (void *a = 0);
virtual int close (u_long flags = 0);
virtual int put (ACE_Message_Block *msg, ACE_Time_Value * = 0);
virtual int svc (void);
// = Dynamic linking hooks
virtual int init (int argc, ACE_TCHAR *argv[]);
virtual int info (ACE_TCHAR **info_string, size_t length) const;
virtual int fini (void);
/// Dump the state of an object.
void dump (void) const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
};
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "ace/Stream_Modules.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#if defined (ACE_TEMPLATES_REQUIRE_PRAGMA)
#pragma implementation ("Stream_Modules.cpp")
#endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */
#include "ace/post.h"
#endif /* ACE_STREAM_MODULES */
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