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#include "ace/MEM_Acceptor.h"
#include "ace/Lib_Find.h"
#if (ACE_HAS_POSITION_INDEPENDENT_POINTERS == 1)
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_string.h"
#include "ace/OS_NS_sys_socket.h"
#include "ace/OS_NS_unistd.h"
#if !defined (__ACE_INLINE__)
#include "ace/MEM_Acceptor.inl"
#endif /* __ACE_INLINE__ */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_ALLOC_HOOK_DEFINE(ACE_MEM_Acceptor)
void
ACE_MEM_Acceptor::dump () const
{
#if defined (ACE_HAS_DUMP)
ACE_TRACE ("ACE_MEM_Acceptor::dump");
#endif /* ACE_HAS_DUMP */
}
// Do nothing routine for constructor.
ACE_MEM_Acceptor::ACE_MEM_Acceptor ()
: mmap_prefix_ (0),
malloc_options_ (ACE_DEFAULT_BASE_ADDR, 0),
preferred_strategy_ (ACE_MEM_IO::Reactive)
{
ACE_TRACE ("ACE_MEM_Acceptor::ACE_MEM_Acceptor");
}
ACE_MEM_Acceptor::~ACE_MEM_Acceptor ()
{
ACE_TRACE ("ACE_MEM_Acceptor::~ACE_MEM_Acceptor");
#if defined (ACE_HAS_ALLOC_HOOKS)
ACE_Allocator::instance()->free(this->mmap_prefix_);
#else
delete[] this->mmap_prefix_;
#endif /* ACE_HAS_ALLOC_HOOKS */
}
// General purpose routine for performing server ACE_SOCK creation.
ACE_MEM_Acceptor::ACE_MEM_Acceptor (const ACE_MEM_Addr &remote_sap,
int reuse_addr,
int backlog,
int protocol)
: mmap_prefix_ (0),
malloc_options_ (ACE_DEFAULT_BASE_ADDR, 0),
preferred_strategy_ (ACE_MEM_IO::Reactive)
{
ACE_TRACE ("ACE_MEM_Acceptor::ACE_MEM_Acceptor");
if (this->open (remote_sap,
reuse_addr,
backlog,
protocol) == -1)
ACELIB_ERROR ((LM_ERROR,
ACE_TEXT ("ACE_MEM_Acceptor::ACE_MEM_Acceptor")));
}
int
ACE_MEM_Acceptor::open (const ACE_MEM_Addr &remote_sap,
int reuse_addr,
int back_log,
int protocol)
{
ACE_TRACE ("ACE_MEM_Acceptor::open");
return this->ACE_SOCK_Acceptor::open (remote_sap.get_local_addr (),
reuse_addr,
PF_INET,
back_log,
protocol);
}
// General purpose routine for accepting new connections.
int
ACE_MEM_Acceptor::accept (ACE_MEM_Stream &new_stream,
ACE_MEM_Addr *remote_sap,
ACE_Time_Value *timeout,
bool restart,
bool reset_new_handle)
{
ACE_TRACE ("ACE_MEM_Acceptor::accept");
int in_blocking_mode = 1;
if (this->shared_accept_start (timeout,
restart,
in_blocking_mode) == -1)
return -1;
else
{
sockaddr *addr = 0;
struct sockaddr_in inet_addr;
int *len_ptr = 0;
int len = 0;
if (remote_sap != 0)
{
addr = reinterpret_cast<sockaddr *> (&inet_addr);
len = sizeof (inet_addr);
len_ptr = &len;
}
do
// On Win32 the third parameter to <accept> must be a NULL
// pointer if to ignore the client's address.
new_stream.set_handle (ACE_OS::accept (this->get_handle (),
addr,
len_ptr));
while (new_stream.get_handle () == ACE_INVALID_HANDLE
&& restart != 0
&& errno == EINTR
&& timeout == 0);
if (remote_sap != 0)
{
ACE_INET_Addr temp (&inet_addr, len);
remote_sap->set_port_number (temp.get_port_number ());
}
}
if (this->shared_accept_finish (new_stream,
in_blocking_mode,
reset_new_handle) == -1)
return -1;
// Allocate 2 * MAXPATHLEN so we can accomodate the unique
// name that gets appended later
ACE_TCHAR buf [2 * MAXPATHLEN + 1];
ACE_INET_Addr local_addr;
if (new_stream.get_local_addr (local_addr) == -1)
return -1;
if (this->mmap_prefix_ != 0)
{
ACE_OS::snprintf (buf, sizeof buf / sizeof buf[0],
ACE_TEXT ("%s_%d_"),
this->mmap_prefix_,
local_addr.get_port_number ());
}
else
{
ACE_TCHAR name[25];
// - 24 is so we can append name to the end.
if (ACE::get_temp_dir (buf, MAXPATHLEN - 24) == -1)
{
ACELIB_ERROR ((LM_ERROR,
ACE_TEXT ("Temporary path too long, ")
ACE_TEXT ("defaulting to current directory\n")));
buf[0] = 0;
}
ACE_OS::snprintf (name, 25,
ACE_TEXT ("MEM_Acceptor_%d_"),
local_addr.get_port_number ());
ACE_OS::strcat (buf, name);
}
ACE_TCHAR unique [MAXPATHLEN];
ACE_OS::unique_name (&new_stream, unique, MAXPATHLEN);
ACE_OS::strcat (buf, unique);
// Make sure we have a fresh start.
ACE_OS::unlink (buf);
new_stream.disable (ACE_NONBLOCK);
ACE_HANDLE new_handle = new_stream.get_handle ();
// Protocol negociation:
// Tell the client side what level of signaling strategy
// we support.
ACE_MEM_IO::Signal_Strategy client_signaling =
#if defined (ACE_WIN32) || !defined (_ACE_USE_SV_SEM)
this->preferred_strategy_;
#else
// We don't support MT.
ACE_MEM_IO::Reactive;
#endif /* ACE_WIN32 || !_ACE_USE_SV_SEM */
if (ACE::send (new_handle, &client_signaling,
sizeof (ACE_INT16)) == -1)
ACELIB_ERROR_RETURN ((LM_DEBUG,
ACE_TEXT ("ACE_MEM_Acceptor::accept error sending strategy\n")),
-1);
// Now we get the signaling strategy the client support.
if (ACE::recv (new_handle, &client_signaling,
sizeof (ACE_INT16)) == -1)
ACELIB_ERROR_RETURN ((LM_DEBUG,
ACE_TEXT ("ACE_MEM_Acceptor::%p error receiving strategy\n"),
ACE_TEXT ("accept")),
-1);
// Ensure minimum buffer size
if (this->malloc_options_.minimum_bytes_ < ACE_MEM_STREAM_MIN_BUFFER)
this->malloc_options_.minimum_bytes_ = ACE_MEM_STREAM_MIN_BUFFER;
// Client will decide what signaling strategy to use.
// Now set up the shared memory malloc pool.
if (new_stream.init (buf,
static_cast<ACE_MEM_IO::Signal_Strategy> (client_signaling),
&this->malloc_options_) == -1)
return -1;
// @@ Need to handle timeout here.
ACE_UINT16 buf_len = static_cast<ACE_UINT16> ((ACE_OS::strlen (buf) + 1) *
sizeof (ACE_TCHAR));
// No need to worry about byte-order because both parties should always
// be on the same machine.
if (ACE::send (new_handle, &buf_len, sizeof (ACE_UINT16)) == -1)
return -1;
// Now send the pathname of the mmap file.
if (ACE::send (new_handle, buf, buf_len) == -1)
return -1;
return 0;
}
int
ACE_MEM_Acceptor::shared_accept_finish (ACE_MEM_Stream new_stream,
int in_blocking_mode,
bool reset_new_handle) const
{
ACE_TRACE ("ACE_MEM_Acceptor::shared_accept_finish ()");
ACE_HANDLE new_handle = new_stream.get_handle ();
// Check to see if we were originally in blocking mode, and if so,
// set the <new_stream>'s handle and <this> handle to be in blocking
// mode.
if (in_blocking_mode)
{
// Save/restore errno.
ACE_Errno_Guard error (errno);
// Only disable ACE_NONBLOCK if we weren't in non-blocking mode
// originally.
ACE::clr_flags (this->get_handle (),
ACE_NONBLOCK);
ACE::clr_flags (new_handle,
ACE_NONBLOCK);
}
#if defined (ACE_HAS_WINSOCK2) && (ACE_HAS_WINSOCK2 != 0)
if (reset_new_handle)
// Reset the event association inherited by the new handle.
::WSAEventSelect ((SOCKET) new_handle, 0, 0);
#else
ACE_UNUSED_ARG (reset_new_handle);
#endif /* ACE_WIN32 */
if (new_handle == ACE_INVALID_HANDLE)
return -1;
return 0;
}
ACE_END_VERSIONED_NAMESPACE_DECL
#endif /* ACE_HAS_POSITION_INDEPENDENT_POINTERS == 1 */
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