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// $Id$
#include "ace/FILE_IO.h"
#include "ace/Log_Category.h"
#include "ace/OS_NS_sys_stat.h"
#include "ace/OS_Memory.h"
#include "ace/Truncate.h"
#if !defined (__ACE_INLINE__)
#include "ace/FILE_IO.inl"
#endif /* __ACE_INLINE__ */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_ALLOC_HOOK_DEFINE(ACE_FILE_IO)
void
ACE_FILE_IO::dump (void) const
{
#if defined (ACE_HAS_DUMP)
ACE_TRACE ("ACE_FILE_IO::dump");
ACELIB_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
this->addr_.dump ();
ACELIB_DEBUG ((LM_DEBUG, ACE_END_DUMP));
#endif /* ACE_HAS_DUMP */
}
// Simple-minded do nothing constructor.
ACE_FILE_IO::ACE_FILE_IO (void)
{
ACE_TRACE ("ACE_FILE_IO::ACE_FILE_IO");
}
// 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_FILE_IO::send (size_t n, ...) const
{
ACE_TRACE ("ACE_FILE_IO::send");
va_list argp;
int total_tuples = ACE_Utils::truncate_cast<int> (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::writev (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 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_FILE_IO::recv (size_t n, ...) const
{
ACE_TRACE ("ACE_FILE_IO::recv");
va_list argp;
int total_tuples = ACE_Utils::truncate_cast<int> (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 const result = ACE_OS::readv (this->get_handle (),
iovp,
total_tuples);
#if !defined (ACE_HAS_ALLOCA)
delete [] iovp;
#endif /* !defined (ACE_HAS_ALLOCA) */
va_end (argp);
return result;
}
// 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.
ssize_t
ACE_FILE_IO::recvv (iovec *io_vec)
{
ACE_TRACE ("ACE_FILE_IO::recvv");
io_vec->iov_base = 0;
ACE_OFF_T const length = ACE_OS::filesize (this->get_handle ());
if (length > 0)
{
// Restrict to max size we can record in iov_len.
size_t len = ACE_Utils::truncate_cast<u_long> (length);
ACE_NEW_RETURN (io_vec->iov_base,
char[len],
-1);
io_vec->iov_len = static_cast<u_long> (this->recv_n (io_vec->iov_base,
len));
return io_vec->iov_len;
}
else
{
return ACE_Utils::truncate_cast<ssize_t> (length);
}
}
ACE_END_VERSIONED_NAMESPACE_DECL
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