X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f46a01651ac91690b47f9606ae53530fbf73829f..81533a3af6ed598c32a35e1c1c2b60f4908f5541:/src/common/socket.cpp

diff --git a/src/common/socket.cpp b/src/common/socket.cpp
index 3a9de3950c..228fe79a28 100644
--- a/src/common/socket.cpp
+++ b/src/common/socket.cpp
@@ -115,7 +115,7 @@ wxDEFINE_EVENT(wxEVT_SOCKET, wxSocketEvent);
 // discard buffer
 #define MAX_DISCARD_SIZE (10 * 1024)
 
-#define wxTRACE_Socket _T("wxSocket")
+#define wxTRACE_Socket wxT("wxSocket")
 
 // --------------------------------------------------------------------------
 // wxWin macros
@@ -533,7 +533,14 @@ wxSocketImpl *wxSocketImpl::Accept(wxSocketBase& wxsocket)
     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);
 
@@ -743,36 +750,48 @@ int wxSocketImpl::Write(const void *buffer, int size)
 // 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" );
@@ -814,12 +833,16 @@ void wxSocketBase::Init()
     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"));
+        }
     }
 }
 
@@ -839,12 +862,6 @@ wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type)
 
 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();
@@ -853,8 +870,7 @@ wxSocketBase::~wxSocketBase()
     delete m_impl;
 
     // Free the pushback buffer
-    if (m_unread)
-        free(m_unread);
+    free(m_unread);
 }
 
 bool wxSocketBase::Destroy()
@@ -870,14 +886,13 @@ 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
+    // possible as we may have other events pending for it
+    if ( 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;
@@ -1094,6 +1109,9 @@ wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes)
 {
     wxSocketReadGuard read(this);
 
+    // Peek() should never block
+    wxSocketWaitModeChanger changeFlags(this, wxSOCKET_NOWAIT);
+
     m_lcount = DoRead(buffer, nbytes);
 
     Pushback(buffer, m_lcount);
@@ -1354,8 +1372,10 @@ wxSocketBase::DoWait(long timeout, wxSocketEventFlags flags)
 {
     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 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)
+    if ( !m_impl->IsServer() && !m_connected && !m_establishing )
         return -1;
 
     // This can be set to true from Interrupt() to exit this function a.s.a.p.
@@ -1626,7 +1646,9 @@ void wxSocketBase::OnRequest(wxSocketNotify notification)
         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;
 
@@ -1741,13 +1763,14 @@ wxSocketServer::wxSocketServer(const wxSockAddress& addr,
                                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;
     }
 
@@ -1769,11 +1792,11 @@ wxSocketServer::wxSocketServer(const wxSockAddress& addr,
         delete m_impl;
         m_impl = NULL;
 
-        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 );
+    wxLogTrace( wxTRACE_Socket, wxT("wxSocketServer on fd %d"), m_impl->m_fd );
 }
 
 // --------------------------------------------------------------------------
@@ -1839,7 +1862,7 @@ bool wxSocketServer::WaitForAccept(long seconds, long milliseconds)
 
 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,
@@ -1854,7 +1877,7 @@ bool wxSocketBase::GetOption(int level, int optname, void *optval, int *optlen)
 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;
@@ -1901,7 +1924,8 @@ bool wxSocketClient::DoConnect(const wxSockAddress& remote,
     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;
 
@@ -1983,7 +2007,8 @@ wxDatagramSocket::wxDatagramSocket( const wxSockAddress& addr,
                 : 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;
@@ -2028,7 +2053,7 @@ wxDatagramSocket& wxDatagramSocket::SendTo( const wxSockAddress& addr,
                                             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);
@@ -2068,4 +2093,14 @@ IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
 wxFORCE_LINK_MODULE( socketiohandler )
 #endif
 
+// same for ManagerSetter in the MSW file
+#ifdef __WXMSW__
+    wxFORCE_LINK_MODULE( mswsocket )
+#endif
+
+// and for OSXManagerSetter in the OS X one
+#ifdef __WXOSX__
+    wxFORCE_LINK_MODULE( osxsocket )
+#endif
+
 #endif // wxUSE_SOCKETS