// (C) 1999-2000, Guillermo Rodriguez Garcia
// (C) 2008 Vadim Zeitlin
// RCS_ID: $Id$
-// License: wxWindows licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ==========================================================================
// discard buffer
#define MAX_DISCARD_SIZE (10 * 1024)
-#define wxTRACE_Socket _T("wxSocket")
+#define wxTRACE_Socket wxT("wxSocket")
// --------------------------------------------------------------------------
// wxWin macros
{
m_socket->m_reading = false;
- m_socket->m_impl->ReenableEvents(wxSOCKET_INPUT_FLAG);
+ // connection could have been lost while reading, in this case calling
+ // ReenableEvents() would assert and is not necessary anyhow
+ wxSocketImpl * const impl = m_socket->m_impl;
+ if ( impl && impl->m_fd != INVALID_SOCKET )
+ impl->ReenableEvents(wxSOCKET_INPUT_FLAG);
}
private:
wxASSERT_MSG( !m_socket->m_writing, "write reentrancy?" );
m_socket->m_writing = true;
-
- m_socket->m_impl->ReenableEvents(wxSOCKET_OUTPUT_FLAG);
}
~wxSocketWriteGuard()
{
m_socket->m_writing = false;
+
+ wxSocketImpl * const impl = m_socket->m_impl;
+ if ( impl && impl->m_fd != INVALID_SOCKET )
+ impl->ReenableEvents(wxSOCKET_OUTPUT_FLAG);
}
private:
if ( fd == INVALID_SOCKET )
return NULL;
- wxSocketImpl * const sock = Create(wxsocket);
+ wxSocketManager * const manager = wxSocketManager::Get();
+ if ( !manager )
+ return NULL;
+
+ wxSocketImpl * const sock = manager->CreateSocket(wxsocket);
+ if ( !sock )
+ return NULL;
+
sock->m_fd = fd;
sock->m_peer = wxSockAddressImpl(from.addr, fromlen);
// Initialization and shutdown
// --------------------------------------------------------------------------
-// FIXME-MT: all this is MT-unsafe, of course, we should protect all accesses
-// to m_countInit with a crit section
-size_t wxSocketBase::m_countInit = 0;
+namespace
+{
+
+// counts the number of calls to Initialize() minus the number of calls to
+// Shutdown(): we don't really need it any more but it was documented that
+// Shutdown() must be called the same number of times as Initialize() and using
+// a counter helps us to check it
+int gs_socketInitCount = 0;
+
+} // anonymous namespace
bool wxSocketBase::IsInitialized()
{
- return m_countInit > 0;
+ wxASSERT_MSG( wxIsMainThread(), "unsafe to call from other threads" );
+
+ return gs_socketInitCount != 0;
}
bool wxSocketBase::Initialize()
{
- if ( !m_countInit++ )
+ wxCHECK_MSG( wxIsMainThread(), false,
+ "must be called from the main thread" );
+
+ if ( !gs_socketInitCount )
{
wxSocketManager * const manager = wxSocketManager::Get();
if ( !manager || !manager->OnInit() )
- {
- m_countInit--;
-
return false;
- }
}
+ gs_socketInitCount++;
+
return true;
}
void wxSocketBase::Shutdown()
{
- // we should be initialized
- wxASSERT_MSG( m_countInit > 0, _T("extra call to Shutdown()") );
- if ( --m_countInit == 0 )
+ wxCHECK_RET( wxIsMainThread(), "must be called from the main thread" );
+
+ wxCHECK_RET( gs_socketInitCount > 0, "too many calls to Shutdown()" );
+
+ if ( !--gs_socketInitCount )
{
wxSocketManager * const manager = wxSocketManager::Get();
wxCHECK_RET( manager, "should have a socket manager" );
m_eventmask =
m_eventsgot = 0;
- if ( !IsInitialized() )
+ // when we create the first socket in the main thread we initialize the
+ // OS-dependent socket stuff: notice that this means that the user code
+ // needs to call wxSocket::Initialize() itself if the first socket it
+ // creates is not created in the main thread
+ if ( wxIsMainThread() )
{
- // this Initialize() will be undone by wxSocketModule::OnExit(), all
- // the other calls to it should be matched by a call to Shutdown()
- if (!Initialize())
- wxLogError("Cannot initialize wxSocketBase");
+ if ( !Initialize() )
+ {
+ wxLogError(_("Cannot initialize sockets"));
+ }
}
}
wxSocketBase::~wxSocketBase()
{
- // Just in case the app called Destroy() *and* then deleted the socket
- // immediately: don't leave dangling pointers.
- wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
- if ( traits )
- traits->RemoveFromPendingDelete(this);
-
// Shutdown and close the socket
if (!m_beingDeleted)
Close();
delete m_impl;
// Free the pushback buffer
- if (m_unread)
- free(m_unread);
+ free(m_unread);
}
bool wxSocketBase::Destroy()
// Suppress events from now on
Notify(false);
- // schedule this object for deletion
- wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
- if ( traits )
+ // Schedule this object for deletion instead of destroying it right now if
+ // it can have other events pending for it and we have a way to do it.
+ //
+ // Notice that sockets used in other threads won't have any events for them
+ // and we shouldn't use delayed destruction mechanism for them as it's not
+ // MT-safe.
+ if ( wxIsMainThread() && wxTheApp )
{
- // let the traits object decide what to do with us
- traits->ScheduleForDestroy(this);
+ wxTheApp->ScheduleForDestruction(this);
}
- else // no app or no traits
+ else // no app
{
// in wxBase we might have no app object at all, don't leak memory
delete this;
{
// if we don't want to wait, just return immediately
if ( m_flags & wxSOCKET_NOWAIT )
+ {
+ // this shouldn't be counted as an error in this case
+ SetError(wxSOCKET_NOERROR);
break;
+ }
// otherwise wait until the socket becomes ready for reading or
// an error occurs on it
{
wxSocketReadGuard read(this);
+ // Peek() should never block
+ wxSocketWaitModeChanger changeFlags(this, wxSOCKET_NOWAIT);
+
m_lcount = DoRead(buffer, nbytes);
Pushback(buffer, m_lcount);
exceptfds; // always want to know about errors
if ( flags & wxSOCKET_INPUT_FLAG )
- {
preadfds = &readfds;
+
+ if ( flags & wxSOCKET_OUTPUT_FLAG )
+ pwritefds = &writefds;
+
+ // When using non-blocking connect() the client socket becomes connected
+ // (successfully or not) when it becomes writable but when using
+ // non-blocking accept() the server socket becomes connected when it
+ // becomes readable.
+ if ( flags & wxSOCKET_CONNECTION_FLAG )
+ {
+ if ( m_server )
+ preadfds = &readfds;
+ else
+ pwritefds = &writefds;
+ }
+
+ if ( preadfds )
+ {
wxFD_ZERO(preadfds);
wxFD_SET(m_fd, preadfds);
}
- // when using non-blocking connect() the socket becomes connected
- // (successfully or not) when it becomes writable
- if ( flags & (wxSOCKET_OUTPUT_FLAG | wxSOCKET_CONNECTION_FLAG) )
+ if ( pwritefds )
{
- pwritefds = &writefds;
wxFD_ZERO(pwritefds);
wxFD_SET(m_fd, pwritefds);
}
{
wxCHECK_MSG( m_impl, -1, "can't wait on invalid socket" );
- // we're never going to become ready if we're not connected (any more)
- if ( !m_connected && !m_establishing )
+ // we're never going to become ready in a TCP client if we're not connected
+ // any more (OTOH a server can call this to precisely wait for a connection
+ // so do wait for it in this case and UDP client is never "connected")
+ if ( !m_impl->IsServer() &&
+ m_impl->m_stream && !m_connected && !m_establishing )
return -1;
// This can be set to true from Interrupt() to exit this function a.s.a.p.
case wxSOCKET_LOST:
flag = wxSOCKET_LOST_FLAG;
- // if we lost the connection the socket is now closed
+ // if we lost the connection the socket is now closed and not
+ // connected any more
+ m_connected = false;
m_closed = true;
break;
wxSocketFlags flags)
: wxSocketBase(flags, wxSOCKET_SERVER)
{
- wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") );
+ wxLogTrace( wxTRACE_Socket, wxT("Opening wxSocketServer") );
- m_impl = wxSocketImpl::Create(*this);
+ wxSocketManager * const manager = wxSocketManager::Get();
+ m_impl = manager ? manager->CreateSocket(*this) : NULL;
if (!m_impl)
{
- wxLogTrace( wxTRACE_Socket, _T("*** Failed to create m_impl") );
+ wxLogTrace( wxTRACE_Socket, wxT("*** Failed to create m_impl") );
return;
}
if (m_impl->CreateServer() != wxSOCKET_NOERROR)
{
- delete m_impl;
- m_impl = NULL;
+ wxDELETE(m_impl);
- wxLogTrace( wxTRACE_Socket, _T("*** CreateServer() failed") );
+ wxLogTrace( wxTRACE_Socket, wxT("*** CreateServer() failed") );
return;
}
- wxLogTrace( wxTRACE_Socket, _T("wxSocketServer on fd %d"), m_impl->m_fd );
+ // Notice that we need a cast as SOCKET is 64 bit under Win64 and that the
+ // cast is safe because a SOCKET is a handle and so limited to 32 (or,
+ // actually, even 24) bit values anyhow.
+ wxLogTrace( wxTRACE_Socket, wxT("wxSocketServer on fd %u"),
+ static_cast<unsigned>(m_impl->m_fd) );
}
// --------------------------------------------------------------------------
bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen)
{
- wxASSERT_MSG( m_impl, _T("Socket not initialised") );
+ wxASSERT_MSG( m_impl, wxT("Socket not initialised") );
SOCKOPTLEN_T lenreal = *optlen;
if ( getsockopt(m_impl->m_fd, level, optname,
bool
wxSocketBase::SetOption(int level, int optname, const void *optval, int optlen)
{
- wxASSERT_MSG( m_impl, _T("Socket not initialised") );
+ wxASSERT_MSG( m_impl, wxT("Socket not initialised") );
return setsockopt(m_impl->m_fd, level, optname,
static_cast<const char *>(optval), optlen) == 0;
m_establishing = false;
// Create and set up the new one
- m_impl = wxSocketImpl::Create(*this);
+ wxSocketManager * const manager = wxSocketManager::Get();
+ m_impl = manager ? manager->CreateSocket(*this) : NULL;
if ( !m_impl )
return false;
: wxSocketBase( flags, wxSOCKET_DATAGRAM )
{
// Create the socket
- m_impl = wxSocketImpl::Create(*this);
+ wxSocketManager * const manager = wxSocketManager::Get();
+ m_impl = manager ? manager->CreateSocket(*this) : NULL;
if (!m_impl)
return;
if ( m_impl->CreateUDP() != wxSOCKET_NOERROR )
{
- delete m_impl;
- m_impl = NULL;
+ wxDELETE(m_impl);
return;
}
const void* buf,
wxUint32 nBytes )
{
- wxASSERT_MSG( m_impl, _T("Socket not initialised") );
+ wxASSERT_MSG( m_impl, wxT("Socket not initialised") );
m_impl->SetPeer(addr.GetAddress());
Write(buf, nBytes);
wxFORCE_LINK_MODULE( socketiohandler )
#endif
+// same for ManagerSetter in the MSW file
+#ifdef __WINDOWS__
+ wxFORCE_LINK_MODULE( mswsocket )
+#endif
+
+// and for OSXManagerSetter in the OS X one
+#ifdef __WXOSX__
+ wxFORCE_LINK_MODULE( osxsocket )
+#endif
+
#endif // wxUSE_SOCKETS
projects / wxWidgets.git / blobdiff