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// -*- C++ -*-
//==========================================================================
/**
* @file SOCK_IO.h
*
* @author Douglas C. Schmidt <d.schmidt@vanderbilt.edu>
*/
//==========================================================================
#ifndef ACE_SOCK_IO_H
#define ACE_SOCK_IO_H
#include /**/ "ace/pre.h"
#include "ace/SOCK.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/ACE.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_SOCK_IO
*
* @brief Defines the methods for the ACE socket wrapper I/O routines
* described below.
*
* If @a timeout == 0, then the call behaves as a normal
* send/recv call, i.e., for blocking sockets, the call will
* block until action is possible; for non-blocking sockets,
* -1 will be returned with errno == EWOULDBLOCK if no action is
* immediately possible.
* If @a timeout != 0, the call will wait until the relative time
* specified in *@a timeout elapses.
* Errors are reported by -1 and 0 return values. If the
* operation times out, -1 is returned with @c errno == ETIME.
* If it succeeds the number of bytes transferred is returned.
* Methods with the extra @a flags argument will always result in
* @c send getting called. Methods without the extra @a flags
* argument will result in @c send getting called on Win32
* platforms, and @c write getting called on non-Win32 platforms.
*/
class ACE_Export ACE_SOCK_IO : public ACE_SOCK
{
public:
/// Constructor.
ACE_SOCK_IO ();
/// Destructor.
~ACE_SOCK_IO ();
/// Recv an @a n byte buffer from the connected socket.
ssize_t recv (void *buf,
size_t n,
int flags,
const ACE_Time_Value *timeout = 0) const;
/// Recv an @a n byte buffer from the connected socket.
ssize_t recv (void *buf,
size_t n,
const ACE_Time_Value *timeout = 0) const;
/// Recv an <iovec> of size @a n from the connected socket.
ssize_t recvv (iovec iov[],
int n,
const ACE_Time_Value *timeout = 0) const;
/**
* Allows a client to read from a socket without having to provide a
* buffer to read. This method determines how much data is in the
* socket, 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 @a io_vec using
* delete [] io_vec->iov_base.
*/
ssize_t recvv (iovec *io_vec,
const ACE_Time_Value *timeout = 0) const;
#ifndef ACE_LACKS_VA_FUNCTIONS
/// Recv @a n varargs messages to the connected socket.
ssize_t recv (size_t n,
...) const;
#endif
/// Recv @a n bytes via Win32 @c ReadFile using overlapped I/O.
ssize_t recv (void *buf,
size_t n,
ACE_OVERLAPPED *overlapped) const;
/// Send an @a n byte buffer to the connected socket.
ssize_t send (const void *buf,
size_t n,
int flags,
const ACE_Time_Value *timeout = 0) const;
/// Send an @a n byte buffer to the connected socket.
ssize_t send (const void *buf,
size_t n,
const ACE_Time_Value *timeout = 0) const;
/// Send an @c iovec of size @a n to the connected socket.
ssize_t sendv (const iovec iov[],
int n,
const ACE_Time_Value *timeout = 0) const;
#ifndef ACE_LACKS_VA_FUNCTIONS
/// Send @a n varargs messages to the connected socket.
ssize_t send (size_t n,
...) const;
#endif
/// Send @a n bytes via Win32 <WriteFile> using overlapped I/O.
ssize_t send (const void *buf,
size_t n,
ACE_OVERLAPPED *overlapped) const;
/// Dump the state of an object.
void dump () const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/SOCK_IO.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* ACE_SOCK_IO_H */
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