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/* -*- C++ -*- */
//=============================================================================
/**
* @file FILE_IO.h
*
* $Id$
*
* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
*/
//=============================================================================
#ifndef ACE_FILE_IO_H
#define ACE_FILE_IO_H
#include /**/ "ace/pre.h"
#include "ace/FILE.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/FILE_Addr.h"
// Used in the FILE_IO.h file...
#include "ace/os_include/os_stdio.h"
#include "ace/os_include/sys/os_uio.h"
#if defined (ACE_HAS_STREAM_PIPES)
# include "ace/OS_NS_stropts.h"
#endif /* ACE_HAS_STREAM_PIPES */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
// Forward decl.
class ACE_Message_Block;
class ACE_Time_Value;
/**
* @class ACE_FILE_IO
*
* @brief Read/Write operations on Files
*/
class ACE_Export ACE_FILE_IO : public ACE_FILE
{
public:
friend class ACE_FILE_Connector;
// = Initialization method.
/// Default constructor.
ACE_FILE_IO (void);
/// send upto <n> bytes in <buf>.
ssize_t send (const void *buf, size_t n) const;
/// Recv upto <n> bytes in <buf>.
ssize_t recv (void *buf, size_t n) const;
/// Send n bytes, keep trying until n are sent.
ssize_t send_n (const void *buf, size_t n) const;
/// Send all the <message_block>s chained through their <next> and
/// <cont> pointers. This call uses the underlying OS gather-write
/// operation to reduce the domain-crossing penalty.
ssize_t send_n (const ACE_Message_Block *message_block,
const ACE_Time_Value *timeout = 0,
size_t *bytes_transferred = 0);
/// Recv n bytes, keep trying until n are received.
ssize_t recv_n (void *buf, size_t n) const;
#if defined (ACE_HAS_STREAM_PIPES)
/// Send bytes via STREAM pipes.
ssize_t send (const ACE_Str_Buf *cntl,
const ACE_Str_Buf *data,
int flags = 0) const;
/// Recv bytes via STREAM pipes.
ssize_t recv (ACE_Str_Buf *cntl,
ACE_Str_Buf *data,
int *flags) const;
/// Send bytes via STREAM pipes using "band" mode.
ssize_t send (const ACE_Str_Buf *cntl,
const ACE_Str_Buf *data,
int band,
int flags) const;
/// Recv bytes via STREAM pipes using "band" mode.
ssize_t recv (ACE_Str_Buf *cntl,
ACE_Str_Buf *data,
int *band,
int *flags) const;
#endif /* ACE_HAS_STREAM_PIPES */
/// Send iovecs via <::writev>.
ssize_t send (const iovec iov[], int n) const;
/// Recv iovecs via <::readv>.
ssize_t recv (iovec iov[], int n) const;
/**
* Send N char *ptrs and int lengths. Note that the char *'s
* precede the ints (basically, an varargs version of writev). The
* count N is the *total* number of trailing arguments, *not* a
* couple of the number of tuple pairs!
*/
ssize_t send (size_t n, ...) const;
/**
* This is an interface to ::readv, that doesn't use the struct
* iovec explicitly. The ... can be passed as an arbitrary number
* of (char *ptr, int len) tuples. However, the count N is the
* *total* number of trailing arguments, *not* a couple of the
* number of tuple pairs!
*/
ssize_t recv (size_t n, ...) const;
/// Send <n> bytes via Win32 WriteFile using overlapped I/O.
ssize_t send (const void *buf,
size_t n,
ACE_OVERLAPPED *overlapped) const;
/// Recv <n> bytes via Win32 ReadFile using overlapped I/O.
ssize_t recv (void *buf,
size_t n,
ACE_OVERLAPPED *overlapped) const;
/// Send an <iovec> of size <n> to the file.
ssize_t sendv (const iovec iov[],
int n) const;
/**
* Allows a client to read from a file without having to provide a
* buffer to read. This method determines how much data is in the
* file, allocates a buffer of this size, reads in the data, and
* returns the number of bytes read. The caller is responsible for
* deleting the member in the <iov_base> field of <io_vec> using
* delete [] io_vec->iov_base.
*/
ssize_t recvv (iovec *io_vec);
/// Send an <iovec> of size <n> to the file. Will block until all
/// bytes are sent or an error occurs.
ssize_t sendv_n (const iovec iov[],
int n) const;
/// Receive an <iovec> of size <n> to the file.
ssize_t recvv_n (iovec iov[],
int n) const;
/// Dump the state of an object.
void dump (void) const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
// = Meta-type info
typedef ACE_FILE_Addr PEER_ADDR;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/FILE_IO.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* ACE_FILE_IO_H */
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