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/* -*- C++ -*- */
// $Id$
// MEM_IO.i
// Send an n byte message to the connected socket.
ASYS_INLINE
ACE_MEM_IO::ACE_MEM_IO (void)
: recv_buffer_ (0),
buf_size_ (0),
cur_offset_ (0)
{
// ACE_TRACE ("ACE_MEM_IO::ACE_MEM_IO");
}
ASYS_INLINE ssize_t
ACE_MEM_IO::fetch_recv_buf (int flag, const ACE_Time_Value *timeout)
{
ACE_TRACE ("ACE_MEM_IO::fetch_recv_buf");
// This method can only be called when <buf_size_> == <cur_offset_>.
ACE_ASSERT (this->buf_size_ == this->cur_offset_);
// We have done using the previous buffer, return it to malloc.
if (this->recv_buffer_ != 0)
this->release_buffer (this->recv_buffer_);
this->cur_offset_ = 0;
off_t new_offset = 0;
int retv = ACE::recv (this->get_handle (),
(char *) &new_offset,
sizeof (off_t),
flag,
timeout);
if (retv != sizeof (off_t))
{
// Nothing available or we are really screwed.
this->buf_size_ = 0;
this->recv_buffer_ = 0;
return -1;
}
else
this->buf_size_ = this->get_buf_len (new_offset,
this->recv_buffer_);
return this->buf_size_;
}
ASYS_INLINE
ACE_MEM_IO::~ACE_MEM_IO (void)
{
// ACE_TRACE ("ACE_MEM_IO::~ACE_MEM_IO");
}
ASYS_INLINE ssize_t
ACE_MEM_IO::send (const void *buf,
size_t len,
int flags,
const ACE_Time_Value *timeout)
{
ACE_TRACE ("ACE_MEM_IO::send");
void *sbuf = this->acquire_buffer (len);
if (sbuf == 0)
return -1; // Memory buffer not initialized.
ACE_OS::memcpy (sbuf, buf, len);
off_t offset = this->set_buf_len (sbuf, len); // <set_buf_len> also calculate
// the offset.
// Send the offset value over the socket.
if (ACE::send (this->get_handle (),
(const char *) &offset,
sizeof (offset),
flags,
timeout) != sizeof (offset))
{
// unsucessful send, release the memory in the shared-memory.
this->release_buffer (sbuf);
return -1;
}
return len;
}
ASYS_INLINE ssize_t
ACE_MEM_IO::recv (void *buf,
size_t len,
int flags,
const ACE_Time_Value *timeout)
{
ACE_TRACE ("ACE_MEM_IO::recv");
size_t count = 0;
// while (len > 0)
// {
size_t buf_len = this->buf_size_ - this->cur_offset_;
if (buf_len == 0)
{
if (this->fetch_recv_buf (flags, timeout) == -1)
return -1;
buf_len = this->buf_size_;
}
size_t length = (len > buf_len ? buf_len : len);
ACE_OS::memcpy ((char *) buf + count,
(char *) this->recv_buffer_ + this->cur_offset_,
length);
this->cur_offset_ += length;
// len -= length;
count += length;
// }
return count;
}
ASYS_INLINE ssize_t
ACE_MEM_IO::send (const void *buf, size_t n, int flags)
{
ACE_TRACE ("ACE_MEM_IO::send");
return this->send (buf, n, flags, 0);
}
// Recv an n byte message from the connected socket.
ASYS_INLINE ssize_t
ACE_MEM_IO::recv (void *buf, size_t n, int flags)
{
ACE_TRACE ("ACE_MEM_IO::recv");
return this->recv (buf, n, flags, 0);
}
// Send an n byte message to the connected socket.
ASYS_INLINE ssize_t
ACE_MEM_IO::send (const void *buf, size_t n)
{
ACE_TRACE ("ACE_MEM_IO::send");
return this->send (buf, n, 0);
}
// Recv an n byte message from the connected socket.
ASYS_INLINE ssize_t
ACE_MEM_IO::recv (void *buf, size_t n)
{
ACE_TRACE ("ACE_MEM_IO::recv");
return this->recv (buf, n, 0);
}
ASYS_INLINE ssize_t
ACE_MEM_IO::recv (void *buf,
size_t len,
const ACE_Time_Value *timeout)
{
ACE_TRACE ("ACE_MEM_IO::recv");
return this->recv (buf, len, 0, timeout);
}
ASYS_INLINE ssize_t
ACE_MEM_IO::send (const void *buf,
size_t len,
const ACE_Time_Value *timeout)
{
ACE_TRACE ("ACE_MEM_IO::send");
return this->send (buf, len, 0, timeout);
}
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