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