Fixed bug in FlexGridSizer mods that prevented them from ever shrinking.

[wxWidgets.git] / src / common / socket.cpp

diff --git a/src/common/socket.cpp b/src/common/socket.cpp
index 542adadde694ef244212f409361e2d89e02815a1..d79c4986c20a72c2309a11a0ab6992c5c248799f 100644 (file)
--- a/src/common/socket.cpp
+++ b/src/common/socket.cpp
@@ -51,12 +51,32 @@
 // discard buffer
 #define MAX_DISCARD_SIZE (10 * 1024)
 
 // discard buffer
 #define MAX_DISCARD_SIZE (10 * 1024)
 

-// what to do within waits
+// what to do within waits: in wxBase we don't do anything as we don't have
+// the event loop anyhow (for now). In GUI apps we have 2 cases: from the main
+// thread itself we have to call wxYield() to let the events (including the
+// GUI events and the low-level (not wxWindows) events from GSocket) be
+// processed. From another thread it is enough to just call wxThread::Yield()
+// which will give away the rest of our time slice: the explanation is that
+// the events will be processed by the main thread anyhow, without calling
+// wxYield(), but we don't want to eat the CPU time uselessly while sitting
+// in the loop waiting for the data

 #if wxUSE_GUI
 #if wxUSE_GUI

-  #define PROCESS_EVENTS() wxYield()
-#else
-  #define PROCESS_EVENTS()
-#endif
+    #if wxUSE_THREADS
+        #define PROCESS_EVENTS()        \
+        {                               \
+            if ( wxThread::IsMain() )   \
+                wxYield();              \
+            else                        \
+                wxThread::Yield();      \
+        }
+    #else // !wxUSE_THREADS
+        #define PROCESS_EVENTS() wxYield()
+    #endif // wxUSE_THREADS/!wxUSE_THREADS
+#else // !wxUSE_GUI
+    #define PROCESS_EVENTS()
+#endif // wxUSE_GUI/!wxUSE_GUI
+
+#define wxTRACE_Socket _T("wxSocket")

 
 // --------------------------------------------------------------------------
 // wxWin macros
 
 // --------------------------------------------------------------------------
 // wxWin macros


@@ -86,12 +106,52 @@ public:
 
 public:
   wxSocketState() : wxObject() {}
 
 public:
   wxSocketState() : wxObject() {}

+
+    DECLARE_NO_COPY_CLASS(wxSocketState)

 };
 
 // ==========================================================================
 // wxSocketBase
 // ==========================================================================
 
 };
 
 // ==========================================================================
 // wxSocketBase
 // ==========================================================================
 

+// --------------------------------------------------------------------------
+// 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;
+
+bool wxSocketBase::IsInitialized()
+{
+    return m_countInit > 0;
+}
+
+bool wxSocketBase::Initialize()
+{
+    if ( !m_countInit++ )
+    {
+        if ( !GSocket_Init() )
+        {
+            m_countInit--;
+
+            return FALSE;
+        }
+    }
+
+    return TRUE;
+}
+
+void wxSocketBase::Shutdown()
+{
+    // we should be initialized
+    wxASSERT_MSG( m_countInit, _T("extra call to Shutdown()") );
+    if ( !--m_countInit )
+    {
+        GSocket_Cleanup();
+    }
+}
+

 // --------------------------------------------------------------------------
 // Ctor and dtor
 // --------------------------------------------------------------------------
 // --------------------------------------------------------------------------
 // Ctor and dtor
 // --------------------------------------------------------------------------


@@ -127,6 +187,13 @@ void wxSocketBase::Init()
   m_cbk          = NULL;
   m_cdata        = NULL;
 #endif // WXWIN_COMPATIBILITY
   m_cbk          = NULL;
   m_cdata        = NULL;
 #endif // WXWIN_COMPATIBILITY

+
+  if ( !IsInitialized() )
+  {
+      // this Initialize() will be undone by wxSocketModule::OnExit(), all the
+      // other calls to it should be matched by a call to Shutdown()
+      Initialize();
+  }

 }
 
 wxSocketBase::wxSocketBase()
 }
 
 wxSocketBase::wxSocketBase()


@@ -463,7 +530,7 @@ wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes)
   {
     bool more = TRUE;
 
   {
     bool more = TRUE;
 

-    while (more)            
+    while (more)

     {
       if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() )
         break;
     {
       if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() )
         break;


@@ -714,6 +781,12 @@ bool wxSocketBase::GetPeer(wxSockAddress& addr_man) const
     return FALSE;
 
   peer = GSocket_GetPeer(m_socket);
     return FALSE;
 
   peer = GSocket_GetPeer(m_socket);

+
+    // copying a null address would just trigger an assert anyway
+
+  if (!peer)
+    return FALSE;
+

   addr_man.SetAddress(peer);
   GAddress_destroy(peer);
 
   addr_man.SetAddress(peer);
   GAddress_destroy(peer);
 


@@ -761,11 +834,11 @@ void wxSocketBase::RestoreState()
   wxNode *node;
   wxSocketState *state;
 
   wxNode *node;
   wxSocketState *state;
 

-  node = m_states.Last();
+  node = m_states.GetLast();

   if (!node)
     return;
 
   if (!node)
     return;
 

-  state = (wxSocketState *)node->Data();
+  state = (wxSocketState *)node->GetData();

 
   m_flags      = state->m_flags;
   m_notify     = state->m_notify;
 
   m_flags      = state->m_flags;
   m_notify     = state->m_notify;


@@ -844,9 +917,10 @@ char *wxSocketBase::CallbackData(char *data)
 // decoupled from wx_socket_callback and thus they suffer from a variety
 // of problems. Avoid them where possible and use events instead.
 
 // decoupled from wx_socket_callback and thus they suffer from a variety
 // of problems. Avoid them where possible and use events instead.
 

-static void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket),
-                                           GSocketEvent notification,
-                                           char *cdata)
+extern "C"
+void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket),
+                                    GSocketEvent notification,
+                                    char *cdata)

 {
   wxSocketBase *sckobj = (wxSocketBase *)cdata;
 
 {
   wxSocketBase *sckobj = (wxSocketBase *)cdata;
 


@@ -992,7 +1066,7 @@ wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek)
 
 
 // ==========================================================================
 
 
 // ==========================================================================

-// wxSocketServer                             
+// wxSocketServer

 // ==========================================================================
 
 // --------------------------------------------------------------------------
 // ==========================================================================
 
 // --------------------------------------------------------------------------


@@ -1003,26 +1077,32 @@ wxSocketServer::wxSocketServer(wxSockAddress& addr_man,
                                wxSocketFlags flags)
               : wxSocketBase(flags, wxSOCKET_SERVER)
 {
                                wxSocketFlags flags)
               : wxSocketBase(flags, wxSOCKET_SERVER)
 {

-  // Create the socket
-  m_socket = GSocket_new();
+    wxLogTrace( wxTRACE_Socket, _T("Opening wxSocketServer") );

 
 

-  if (!m_socket)
-    return;
+    m_socket = GSocket_new();

 
 

-  // Setup the socket as server
-  GSocket_SetLocal(m_socket, addr_man.GetAddress());
-  if (GSocket_SetServer(m_socket) != GSOCK_NOERROR)
-  {
-    GSocket_destroy(m_socket);
-    m_socket = NULL;
-    return;
-  }
+    if (!m_socket)
+    {
+        wxLogTrace( wxTRACE_Socket, _T("*** GSocket_new failed") );
+        return;
+    }

 
 

-  GSocket_SetTimeout(m_socket, m_timeout * 1000);
-  GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
-                                GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
-                                wx_socket_callback, (char *)this);
+        // Setup the socket as server

 
 

+    GSocket_SetLocal(m_socket, addr_man.GetAddress());
+    if (GSocket_SetServer(m_socket) != GSOCK_NOERROR)
+    {
+        GSocket_destroy(m_socket);
+        m_socket = NULL;
+
+        wxLogTrace( wxTRACE_Socket, _T("*** GSocket_SetServer failed") );
+        return;
+    }
+
+    GSocket_SetTimeout(m_socket, m_timeout * 1000);
+    GSocket_SetCallback(m_socket, GSOCK_INPUT_FLAG | GSOCK_OUTPUT_FLAG |
+                                  GSOCK_LOST_FLAG | GSOCK_CONNECTION_FLAG,
+                                  wx_socket_callback, (char *)this);

 }
 
 // --------------------------------------------------------------------------
 }
 
 // --------------------------------------------------------------------------


@@ -1070,7 +1150,10 @@ wxSocketBase *wxSocketServer::Accept(bool wait)
   sock->SetFlags(m_flags);
 
   if (!AcceptWith(*sock, wait))
   sock->SetFlags(m_flags);
 
   if (!AcceptWith(*sock, wait))

-    return NULL;
+  {
+    sock->Destroy();
+    sock = NULL;
+  }

 
   return sock;
 }
 
   return sock;
 }


@@ -1214,39 +1297,32 @@ wxDatagramSocket& wxDatagramSocket::SendTo( wxSockAddress& addr,
     return (*this);
 }
 
     return (*this);
 }
 

-// ==========================================================================
-// wxSocketEvent
-// ==========================================================================
-
-wxSocketEvent::wxSocketEvent(int id) : wxEvent(id)
-{
-  SetEventType( (wxEventType)wxEVT_SOCKET );
-}
-
-void wxSocketEvent::CopyObject(wxObject& object_dest) const
-{
-  wxSocketEvent *event = (wxSocketEvent *)&object_dest;
-
-  wxEvent::CopyObject(object_dest);
-
-  event->m_event      = m_event;
-  event->m_clientData = m_clientData;
-}
-

 // ==========================================================================
 // wxSocketModule
 // ==========================================================================
 
 class WXDLLEXPORT wxSocketModule : public wxModule
 {
 // ==========================================================================
 // wxSocketModule
 // ==========================================================================
 
 class WXDLLEXPORT wxSocketModule : public wxModule
 {

-  DECLARE_DYNAMIC_CLASS(wxSocketModule)
-

 public:
 public:

-  bool OnInit() { return GSocket_Init(); }
-  void OnExit() { GSocket_Cleanup(); }
+    virtual bool OnInit()
+    {
+        // wxSocketBase will call GSocket_Init() itself when/if needed
+        return TRUE;
+    }
+
+    virtual void OnExit()
+    {
+        if ( wxSocketBase::IsInitialized() )
+            wxSocketBase::Shutdown();
+    }
+
+private:
+    DECLARE_DYNAMIC_CLASS(wxSocketModule)

 };
 
 IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
 
 #endif
   // wxUSE_SOCKETS
 };
 
 IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)
 
 #endif
   // wxUSE_SOCKETS

+
+// vi:sts=4:sw=4:et