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// $Id$
#include "ace/SOCK_IO.h"
#include "ace/Handle_Set.h"
#include "ace/OS_NS_sys_select.h"
#include "ace/OS_NS_sys_socket.h"
#include "ace/OS_Memory.h"
#include "ace/Truncate.h"
#if !defined (__ACE_INLINE__)
#include "ace/SOCK_IO.inl"
#endif /* __ACE_INLINE__ */
ACE_RCSID(ace, SOCK_IO, "$Id$")
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_ALLOC_HOOK_DEFINE(ACE_SOCK_IO)
void
ACE_SOCK_IO::dump (void) const
{
#if defined (ACE_HAS_DUMP)
ACE_TRACE ("ACE_SOCK_IO::dump");
#endif /* ACE_HAS_DUMP */
}
// 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.
ssize_t
ACE_SOCK_IO::recvv (iovec *io_vec,
const ACE_Time_Value *timeout) const
{
ACE_TRACE ("ACE_SOCK_IO::recvv");
#if defined (FIONREAD)
ACE_Handle_Set handle_set;
handle_set.reset ();
handle_set.set_bit (this->get_handle ());
io_vec->iov_base = 0;
// Check the status of the current socket.
int select_width;
# if defined (ACE_WIN32)
// This arg is ignored on Windows and causes pointer truncation
// warnings on 64-bit compiles.
select_width = 0;
# else
select_width = int (this->get_handle ()) + 1;
# endif /* ACE_WIN32 */
switch (ACE_OS::select (select_width,
handle_set,
0, 0,
timeout))
{
case -1:
return -1;
/* NOTREACHED */
case 0:
errno = ETIME;
return -1;
/* NOTREACHED */
default:
// Goes fine, fallthrough to get data
break;
}
int inlen = 0;
if (ACE_OS::ioctl (this->get_handle (),
FIONREAD,
&inlen) == -1)
return -1;
else if (inlen > 0)
{
ACE_NEW_RETURN (io_vec->iov_base,
char[inlen],
-1);
// It's ok to blindly cast this value since 'inlen' is an int and, thus,
// we can't get more than that back. Besides, if the recv() fails, we
// don't want that value cast to unsigned and returned.
ssize_t recv_len = this->recv (io_vec->iov_base, inlen);
if (recv_len > 0)
// u_long is the Windows type; size_t is everyone else's. A u_long
// should go into a size_t anywhere without an issue.
io_vec->iov_len = static_cast<u_long> (recv_len);
return recv_len;
}
else
return 0;
#else
ACE_UNUSED_ARG (io_vec);
ACE_UNUSED_ARG (timeout);
ACE_NOTSUP_RETURN (-1);
#endif /* FIONREAD */
}
// 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
ACE_SOCK_IO::send (size_t n, ...) const
{
ACE_TRACE ("ACE_SOCK_IO::send");
va_list argp;
int total_tuples = ACE_Utils::Truncate<size_t> (n / 2);
iovec *iovp = 0;
#if defined (ACE_HAS_ALLOCA)
iovp = (iovec *) alloca (total_tuples * sizeof (iovec));
#else
ACE_NEW_RETURN (iovp,
iovec[total_tuples],
-1);
#endif /* !defined (ACE_HAS_ALLOCA) */
va_start (argp, n);
for (int i = 0; i < total_tuples; i++)
{
iovp[i].iov_base = va_arg (argp, char *);
iovp[i].iov_len = va_arg (argp, int);
}
ssize_t result = ACE_OS::sendv (this->get_handle (),
iovp,
total_tuples);
#if !defined (ACE_HAS_ALLOCA)
delete [] iovp;
#endif /* !defined (ACE_HAS_ALLOCA) */
va_end (argp);
return result;
}
// This is basically an interface to ACE_OS::readv, that doesn't use
// the struct iovec_Base 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
ACE_SOCK_IO::recv (size_t n, ...) const
{
ACE_TRACE ("ACE_SOCK_IO::recv");
va_list argp;
int total_tuples = ACE_Utils::Truncate<size_t> (n / 2);
iovec *iovp;
#if defined (ACE_HAS_ALLOCA)
iovp = (iovec *) alloca (total_tuples * sizeof (iovec));
#else
ACE_NEW_RETURN (iovp,
iovec[total_tuples],
-1);
#endif /* !defined (ACE_HAS_ALLOCA) */
va_start (argp, n);
for (int i = 0; i < total_tuples; i++)
{
iovp[i].iov_base = va_arg (argp, char *);
iovp[i].iov_len = va_arg (argp, int);
}
ssize_t result = ACE_OS::recvv (this->get_handle (),
iovp,
total_tuples);
#if !defined (ACE_HAS_ALLOCA)
delete [] iovp;
#endif /* !defined (ACE_HAS_ALLOCA) */
va_end (argp);
return result;
}
ACE_END_VERSIONED_NAMESPACE_DECL
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