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#include "ace/SPIPE_Connector.h"
#include "ace/Handle_Ops.h"
#include "ace/Log_Category.h"
#include "ace/OS_NS_sys_time.h"
#include "ace/OS_NS_fcntl.h"
#include "ace/OS_NS_unistd.h"
#if defined (ACE_HAS_ALLOC_HOOKS)
# include "ace/Malloc_Base.h"
#endif /* ACE_HAS_ALLOC_HOOKS */
#if !defined (__ACE_INLINE__)
#include "ace/SPIPE_Connector.inl"
#endif /* __ACE_INLINE__ */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_ALLOC_HOOK_DEFINE(ACE_SPIPE_Connector)
// Creates a Local ACE_SPIPE.
ACE_SPIPE_Connector::ACE_SPIPE_Connector (ACE_SPIPE_Stream &new_io,
const ACE_SPIPE_Addr &remote_sap,
ACE_Time_Value *timeout,
const ACE_Addr & local_sap,
int reuse_addr,
int flags,
int perms,
LPSECURITY_ATTRIBUTES sa,
int pipe_mode)
{
ACE_TRACE ("ACE_SPIPE_Connector::ACE_SPIPE_Connector");
if (this->connect (new_io, remote_sap, timeout, local_sap,
reuse_addr, flags, perms, sa, pipe_mode) == -1
&& timeout != 0 && !(errno == EWOULDBLOCK || errno == ETIME))
ACELIB_ERROR ((LM_ERROR, ACE_TEXT ("address %s, %p\n"),
remote_sap.get_path_name (), ACE_TEXT ("ACE_SPIPE_Connector")));
}
void
ACE_SPIPE_Connector::dump () const
{
#if defined (ACE_HAS_DUMP)
ACE_TRACE ("ACE_SPIPE_Connector::dump");
#endif /* ACE_HAS_DUMP */
}
ACE_SPIPE_Connector::ACE_SPIPE_Connector ()
{
ACE_TRACE ("ACE_SPIPE_Connector::ACE_SPIPE_Connector");
}
int
ACE_SPIPE_Connector::connect (ACE_SPIPE_Stream &new_io,
const ACE_SPIPE_Addr &remote_sap,
ACE_Time_Value *timeout,
const ACE_Addr & /* local_sap */,
int /* reuse_addr */,
int flags,
int perms,
LPSECURITY_ATTRIBUTES sa,
int pipe_mode)
{
ACE_TRACE ("ACE_SPIPE_Connector::connect");
// Make darn sure that the O_CREAT flag is not set!
ACE_CLR_BITS (flags, O_CREAT);
ACE_HANDLE handle;
ACE_UNUSED_ARG (pipe_mode);
#if defined (ACE_WIN32)
// We need to allow for more than one attempt to connect,
// calculate the absolute time at which we give up.
ACE_Time_Value absolute_time;
if (timeout != 0)
absolute_time = ACE_OS::gettimeofday () + *timeout;
// Loop until success or failure.
for (;;)
{
handle = ACE_OS::open (remote_sap.get_path_name(), flags, perms, sa);
if (handle != ACE_INVALID_HANDLE)
// Success!
break;
// Check if we have a busy pipe condition.
if (::GetLastError() != ERROR_PIPE_BUSY)
// Nope, this is a failure condition.
break;
// This will hold the time out value used in the ::WaitNamedPipe
// call.
DWORD time_out_value;
// Check if we are to block until we connect.
if (timeout == 0)
// Wait for as long as it takes.
time_out_value = NMPWAIT_WAIT_FOREVER;
else
{
// Calculate the amount of time left to wait.
ACE_Time_Value relative_time (absolute_time - ACE_OS::gettimeofday ());
// Check if we have run out of time.
if (relative_time <= ACE_Time_Value::zero)
{
// Mimick the errno value returned by
// ACE::handle_timed_open.
if (*timeout == ACE_Time_Value::zero)
errno = EWOULDBLOCK;
else
errno = ETIMEDOUT;
// Exit the connect loop with the failure.
break;
}
// Get the amount of time remaining for ::WaitNamedPipe.
time_out_value = relative_time.msec ();
}
// Wait for the named pipe to become available.
ACE_TEXT_WaitNamedPipe (remote_sap.get_path_name (),
time_out_value);
// Regardless of the return value, we'll do one more attempt to
// connect to see if it is now available and to return
// consistent error values.
}
// Set named pipe mode if we have a valid handle.
if (handle != ACE_INVALID_HANDLE)
{
// Check if we are changing the pipe mode from the default.
if (pipe_mode != (PIPE_READMODE_BYTE | PIPE_WAIT))
{
DWORD dword_pipe_mode = pipe_mode;
if (!::SetNamedPipeHandleState (handle,
&dword_pipe_mode,
0,
0))
{
// We were not able to put the pipe into the requested
// mode.
ACE_OS::close (handle);
handle = ACE_INVALID_HANDLE;
}
}
}
#else /* ACE_WIN32 */
handle = ACE::handle_timed_open (timeout,
remote_sap.get_path_name (),
flags, perms, sa);
#endif /* !ACE_WIN32 */
new_io.set_handle (handle);
new_io.remote_addr_ = remote_sap; // class copy.
return handle == ACE_INVALID_HANDLE ? -1 : 0;
}
ACE_END_VERSIONED_NAMESPACE_DECL
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