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// -*- C++ -*-
//==========================================================================
/**
* @file FIFO_Recv.h
*
* @author Doug Schmidt
*/
//==========================================================================
#ifndef ACE_FIFO_RECV_H
#define ACE_FIFO_RECV_H
#include /**/ "ace/pre.h"
#include "ace/FIFO.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/os_include/os_fcntl.h"
#include "ace/Default_Constants.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_FIFO_Recv
*
* @brief Receiver side of the bytestream C++ wrapper for UNIX
* FIFOs.
*/
class ACE_Export ACE_FIFO_Recv : public ACE_FIFO
{
public:
/// @name Initialization methods.
///
/// Note that @c ACE_NONBLOCK will be added to any @a flags value passed.
/// This causes the open to succeed even if no writer has yet opened the
/// fifo. There is no way to disable this behavior.
///
/// @arg persistent Means "open fifo for writing, as well as
/// reading." This ensures that the fifo never gets EOF, even if there
/// aren't any writers at the moment!
//@{
/// Default constructor.
ACE_FIFO_Recv (void);
/// Open up a bytestream named pipe for reading.
ACE_FIFO_Recv (const ACE_TCHAR *rendezvous,
int flags = O_CREAT | O_RDONLY,
mode_t perms = ACE_DEFAULT_FILE_PERMS,
int persistent = 1,
LPSECURITY_ATTRIBUTES sa = 0);
/// Open up a bytestream named pipe for reading.
int open (const ACE_TCHAR *rendezvous,
int flags = O_CREAT | O_RDONLY,
mode_t perms = ACE_DEFAULT_FILE_PERMS,
int persistent = 1,
LPSECURITY_ATTRIBUTES sa = 0);
//@}
/// Close down the fifo.
int close (void);
/// Recv @a buf of up to @a len bytes.
ssize_t recv (void *buf, size_t len);
/// Recv @a buf of exactly @a len bytes (block until done).
ssize_t recv_n (void *buf, size_t len);
/// Dump the state of an object.
void dump () const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
private:
/// Auxiliary handle that is used to implement persistent FIFOs.
ACE_HANDLE aux_handle_;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/FIFO_Recv.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* ACE_FIFO_RECV_H */
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