don't try to remove -g flag from CFLAGS, it is not necessary and doesn't work correct...

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

diff --git a/src/common/socket.cpp b/src/common/socket.cpp
index 4cefd26bc9bab9ffbd072260d4718d1dba231867..95669073cd46c8ea8a56b0f01b8e8048e4116bd2 100644 (file)
--- a/src/common/socket.cpp
+++ b/src/common/socket.cpp
@@ -9,6 +9,10 @@
 // License:    see wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 // License:    see wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 

+// ==========================================================================
+// Declarations
+// ==========================================================================
+

 #ifdef __GNUG__
 #pragma implementation "socket.h"
 #endif
 #ifdef __GNUG__
 #pragma implementation "socket.h"
 #endif


@@ -22,10 +26,6 @@
 
 #if wxUSE_SOCKETS
 
 
 #if wxUSE_SOCKETS
 

-// ==========================================================================
-// Headers and constants
-// ==========================================================================
-

 #include "wx/app.h"
 #include "wx/defs.h"
 #include "wx/object.h"
 #include "wx/app.h"
 #include "wx/defs.h"
 #include "wx/object.h"


@@ -35,27 +35,49 @@
 #include "wx/module.h"
 #include "wx/log.h"
 #include "wx/intl.h"
 #include "wx/module.h"
 #include "wx/log.h"
 #include "wx/intl.h"

+#include "wx/event.h"

 
 #if wxUSE_GUI
 
 #if wxUSE_GUI

-    #include "wx/event.h"
-    #include "wx/gdicmn.h"      // for wxPendingDelete
+  #include "wx/gdicmn.h"      // for wxPendingDelete

 #endif // wxUSE_GUI
 
 #include "wx/sckaddr.h"
 #include "wx/socket.h"
 
 #endif // wxUSE_GUI
 
 #include "wx/sckaddr.h"
 #include "wx/socket.h"
 

+// --------------------------------------------------------------------------
+// macros and constants
+// --------------------------------------------------------------------------

 
 // discard buffer
 #define MAX_DISCARD_SIZE (10 * 1024)
 
 
 // discard buffer
 #define MAX_DISCARD_SIZE (10 * 1024)
 

-// what to do within waits
-#define PROCESS_EVENTS() wxYield()
-
-// use wxPostEvent or not
-#define USE_DELAYED_EVENTS 1
+// 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_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

 
 // --------------------------------------------------------------------------
 
 // --------------------------------------------------------------------------

-// ClassInfos
+// wxWin macros

 // --------------------------------------------------------------------------
 
 IMPLEMENT_CLASS(wxSocketBase, wxObject)
 // --------------------------------------------------------------------------
 
 IMPLEMENT_CLASS(wxSocketBase, wxObject)


@@ -64,24 +86,68 @@ IMPLEMENT_CLASS(wxSocketClient, wxSocketBase)
 IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase)
 IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
 
 IMPLEMENT_CLASS(wxDatagramSocket, wxSocketBase)
 IMPLEMENT_DYNAMIC_CLASS(wxSocketEvent, wxEvent)
 

+// --------------------------------------------------------------------------
+// private classes
+// --------------------------------------------------------------------------
+

 class wxSocketState : public wxObject
 {
 public:
 class wxSocketState : public wxObject
 {
 public:

-  bool                     m_notify_state;
-  wxSocketEventFlags       m_neededreq;

   wxSocketFlags            m_flags;
   wxSocketFlags            m_flags;

+  wxSocketEventFlags       m_eventmask;
+  bool                     m_notify;
+  void                    *m_clientData;
+#if WXWIN_COMPATIBILITY

   wxSocketBase::wxSockCbk  m_cbk;
   char                    *m_cdata;
   wxSocketBase::wxSockCbk  m_cbk;
   char                    *m_cdata;

+#endif // WXWIN_COMPATIBILITY

 
 public:
   wxSocketState() : wxObject() {}
 };
 
 
 public:
   wxSocketState() : wxObject() {}
 };
 

-

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


@@ -108,15 +174,28 @@ void wxSocketBase::Init()
   m_unrd_cur     = 0;
 
   // events
   m_unrd_cur     = 0;
 
   // events

-  m_handler      = NULL;

   m_id           = -1;
   m_id           = -1;

-  m_notify_state = FALSE;
-  m_neededreq    = 0;
+  m_handler      = NULL;
+  m_clientData   = NULL;
+  m_notify       = FALSE;
+  m_eventmask    = 0;
+#if WXWIN_COMPATIBILITY

   m_cbk          = NULL;
   m_cdata        = NULL;
   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() { Init(); }
+wxSocketBase::wxSocketBase()
+{
+  Init();
+}

 
 wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type)
 {
 
 wxSocketBase::wxSocketBase(wxSocketFlags flags, wxSocketType type)
 {


@@ -157,9 +236,12 @@ bool wxSocketBase::Destroy()
   // Shutdown and close the socket
   Close();
 
   // Shutdown and close the socket
   Close();
 

+  // Supress events from now on
+  Notify(FALSE);
+

 #if wxUSE_GUI
 #if wxUSE_GUI

-  if ( wxPendingDelete.Member(this) )
-      wxPendingDelete.Append(this);
+  if ( !wxPendingDelete.Member(this) )
+    wxPendingDelete.Append(this);

 #else
   delete this;
 #endif
 #else
   delete this;
 #endif


@@ -167,9 +249,8 @@ bool wxSocketBase::Destroy()
   return TRUE;
 }
 
   return TRUE;
 }
 

-

 // --------------------------------------------------------------------------
 // --------------------------------------------------------------------------

-// Basic IO operations
+// Basic IO calls

 // --------------------------------------------------------------------------
 
 // The following IO operations update m_error and m_lcount:
 // --------------------------------------------------------------------------
 
 // The following IO operations update m_error and m_lcount:


@@ -180,7 +261,7 @@ bool wxSocketBase::Destroy()
 bool wxSocketBase::Close()
 {
   // Interrupt pending waits
 bool wxSocketBase::Close()
 {
   // Interrupt pending waits

-  InterruptAllWaits();
+  InterruptWait();

 
   if (m_socket)
   {
 
   if (m_socket)
   {


@@ -197,7 +278,7 @@ bool wxSocketBase::Close()
   return TRUE;
 }
 
   return TRUE;
 }
 

-wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::Read(void* buffer, wxUint32 nbytes)

 {
   // Mask read events
   m_reading = TRUE;
 {
   // Mask read events
   m_reading = TRUE;


@@ -216,7 +297,7 @@ wxSocketBase& wxSocketBase::Read(char* buffer, wxUint32 nbytes)
   return *this;
 }
 
   return *this;
 }
 

-wxUint32 wxSocketBase::_Read(char* buffer, wxUint32 nbytes)
+wxUint32 wxSocketBase::_Read(void* buffer, wxUint32 nbytes)

 {
   int total;
   int ret = 1;
 {
   int total;
   int ret = 1;


@@ -224,60 +305,62 @@ wxUint32 wxSocketBase::_Read(char* buffer, wxUint32 nbytes)
   // Try the pushback buffer first
   total = GetPushback(buffer, nbytes, FALSE);
   nbytes -= total;
   // Try the pushback buffer first
   total = GetPushback(buffer, nbytes, FALSE);
   nbytes -= total;

-  buffer += total;
-
-  // If the socket is invalid or we got all the data, return now
-  if (!m_socket || !nbytes)
+  buffer  = (char *)buffer + total;
+
+  // Return now in one of the following cases:
+  // - the socket is invalid,
+  // - we got all the data,
+  // - we got *some* data and we are not using wxSOCKET_WAITALL.
+  if ( !m_socket ||
+       !nbytes ||
+       ((total != 0) && !(m_flags & wxSOCKET_WAITALL)) )

     return total;
 
   // Possible combinations (they are checked in this order)
   // wxSOCKET_NOWAIT
     return total;
 
   // Possible combinations (they are checked in this order)
   // wxSOCKET_NOWAIT

-  // wxSOCKET_WAITALL | wxSOCKET_BLOCK
-  // wxSOCKET_WAITALL
+  // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)

   // wxSOCKET_BLOCK
   // wxSOCKET_NONE
   //
   if (m_flags & wxSOCKET_NOWAIT)
   {
   // wxSOCKET_BLOCK
   // wxSOCKET_NONE
   //
   if (m_flags & wxSOCKET_NOWAIT)
   {

-    GSocket_SetNonBlocking(m_socket, TRUE);
-    ret = GSocket_Read(m_socket, buffer, nbytes);
-    GSocket_SetNonBlocking(m_socket, FALSE);
+    GSocket_SetNonBlocking(m_socket, 1);
+    ret = GSocket_Read(m_socket, (char *)buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, 0);

 
     if (ret > 0)
       total += ret;
   }
 
     if (ret > 0)
       total += ret;
   }

-  else if (m_flags & wxSOCKET_WAITALL)
+  else

   {
   {

-    while (ret > 0 && nbytes > 0)
+    bool more = TRUE;
+
+    while (more)

     {
     {

-      if (!(m_flags & wxSOCKET_BLOCK) && !WaitForRead())
-          break;
+      if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForRead() )
+        break;

 
 

-      ret = GSocket_Read(m_socket, buffer, nbytes);
+      ret = GSocket_Read(m_socket, (char *)buffer, nbytes);

 
       if (ret > 0)
       {
         total  += ret;
 
       if (ret > 0)
       {
         total  += ret;

-        buffer += ret;

         nbytes -= ret;
         nbytes -= ret;

+        buffer  = (char *)buffer + ret;

       }
       }

-    }
-  }
-  else
-  {
-    if ((m_flags & wxSOCKET_BLOCK) || WaitForRead())
-    {
-      ret = GSocket_Read(m_socket, buffer, nbytes);

 
 

-      if (ret > 0)
-        total += ret;
+      // If we got here and wxSOCKET_WAITALL is not set, we can leave
+      // now. Otherwise, wait until we recv all the data or until there
+      // is an error.
+      //
+      more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL));

     }
   }
 
   return total;
 }
 
     }
   }
 
   return total;
 }
 

-wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::ReadMsg(void* buffer, wxUint32 nbytes)

 {
   wxUint32 len, len2, sig, total;
   bool error;
 {
   wxUint32 len, len2, sig, total;
   bool error;


@@ -296,17 +379,17 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
   old_flags = m_flags;
   SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);
 
   old_flags = m_flags;
   SetFlags((m_flags & wxSOCKET_BLOCK) | wxSOCKET_WAITALL);
 

-  if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
+  if (_Read(&msg, sizeof(msg)) != sizeof(msg))

     goto exit;
 
     goto exit;
 

-  sig =  (wxUint32)msg.sig[0];
+  sig = (wxUint32)msg.sig[0];

   sig |= (wxUint32)(msg.sig[1] << 8);
   sig |= (wxUint32)(msg.sig[2] << 16);
   sig |= (wxUint32)(msg.sig[3] << 24);
 
   if (sig != 0xfeeddead)
   {
   sig |= (wxUint32)(msg.sig[1] << 8);
   sig |= (wxUint32)(msg.sig[2] << 16);
   sig |= (wxUint32)(msg.sig[3] << 24);
 
   if (sig != 0xfeeddead)
   {

-    wxLogWarning( _("wxSocket: invalid signature in ReadMsg."));
+    wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));

     goto exit;
   }
 
     goto exit;
   }
 


@@ -350,7 +433,7 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
     if (len2 != 0)
       goto exit;
   }
     if (len2 != 0)
       goto exit;
   }

-  if (_Read((char *)&msg, sizeof(msg)) != sizeof(msg))
+  if (_Read(&msg, sizeof(msg)) != sizeof(msg))

     goto exit;
 
   sig = (wxUint32)msg.sig[0];
     goto exit;
 
   sig = (wxUint32)msg.sig[0];


@@ -360,7 +443,7 @@ wxSocketBase& wxSocketBase::ReadMsg(char* buffer, wxUint32 nbytes)
 
   if (sig != 0xdeadfeed)
   {
 
   if (sig != 0xdeadfeed)
   {

-    wxLogWarning( _("wxSocket: invalid signature in ReadMsg."));
+    wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));

     goto exit;
   }
 
     goto exit;
   }
 


@@ -376,7 +459,7 @@ exit:
   return *this;
 }
 
   return *this;
 }
 

-wxSocketBase& wxSocketBase::Peek(char* buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::Peek(void* buffer, wxUint32 nbytes)

 {
   // Mask read events
   m_reading = TRUE;
 {
   // Mask read events
   m_reading = TRUE;


@@ -396,7 +479,7 @@ wxSocketBase& wxSocketBase::Peek(char* buffer, wxUint32 nbytes)
   return *this;
 }
 
   return *this;
 }
 

-wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::Write(const void *buffer, wxUint32 nbytes)

 {
   // Mask write events
   m_writing = TRUE;
 {
   // Mask write events
   m_writing = TRUE;


@@ -415,68 +498,66 @@ wxSocketBase& wxSocketBase::Write(const char *buffer, wxUint32 nbytes)
   return *this;
 }
 
   return *this;
 }
 

-wxUint32 wxSocketBase::_Write(const char *buffer, wxUint32 nbytes)
+wxUint32 wxSocketBase::_Write(const void *buffer, wxUint32 nbytes)

 {
   wxUint32 total = 0;
   int ret = 1;
 
 {
   wxUint32 total = 0;
   int ret = 1;
 

-  // If the socket is invalid, return immediately
-  if (!m_socket)
+  // If the socket is invalid or parameters are ill, return immediately
+  if (!m_socket || !buffer || !nbytes)

     return 0;
 
   // Possible combinations (they are checked in this order)
   // wxSOCKET_NOWAIT
     return 0;
 
   // Possible combinations (they are checked in this order)
   // wxSOCKET_NOWAIT

-  // wxSOCKET_WAITALL | wxSOCKET_BLOCK
-  // wxSOCKET_WAITALL
+  // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)

   // wxSOCKET_BLOCK
   // wxSOCKET_NONE
   //
   if (m_flags & wxSOCKET_NOWAIT)
   {
   // wxSOCKET_BLOCK
   // wxSOCKET_NONE
   //
   if (m_flags & wxSOCKET_NOWAIT)
   {

-    GSocket_SetNonBlocking(m_socket, TRUE);
-    ret = GSocket_Write(m_socket, buffer, nbytes);
-    GSocket_SetNonBlocking(m_socket, FALSE);
+    GSocket_SetNonBlocking(m_socket, 1);
+    ret = GSocket_Write(m_socket, (const char *)buffer, nbytes);
+    GSocket_SetNonBlocking(m_socket, 0);

 
     if (ret > 0)
       total = ret;
   }
 
     if (ret > 0)
       total = ret;
   }

-  else if (m_flags & wxSOCKET_WAITALL)
+  else

   {
   {

-    while (ret > 0 && nbytes > 0)
+    bool more = TRUE;
+
+    while (more)

     {
     {

-      if (!(m_flags & wxSOCKET_BLOCK) && !WaitForWrite())
-          break;
+      if ( !(m_flags & wxSOCKET_BLOCK) && !WaitForWrite() )
+        break;

 
 

-      ret = GSocket_Write(m_socket, buffer, nbytes);
+      ret = GSocket_Write(m_socket, (const char *)buffer, nbytes);

 
       if (ret > 0)
       {
         total  += ret;
 
       if (ret > 0)
       {
         total  += ret;

-        buffer += ret;

         nbytes -= ret;
         nbytes -= ret;

+        buffer  = (const char *)buffer + ret;

       }
       }

-    }
-  }
-  else
-  {
-    if ((m_flags & wxSOCKET_BLOCK) || WaitForWrite())
-    {
-      ret = GSocket_Write(m_socket, buffer, nbytes);

 
 

-      if (ret > 0)
-        total = ret;
+      // If we got here and wxSOCKET_WAITALL is not set, we can leave
+      // now. Otherwise, wait until we send all the data or until there
+      // is an error.
+      //
+      more = (ret > 0 && nbytes > 0 && (m_flags & wxSOCKET_WAITALL));

     }
   }
 
   return total;
 }
 
     }
   }
 
   return total;
 }
 

-wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::WriteMsg(const void *buffer, wxUint32 nbytes)

 {
   wxUint32 total;
   bool error;
   int old_flags;
 {
   wxUint32 total;
   bool error;
   int old_flags;

-  struct {
+  struct
+  {

     unsigned char sig[4];
     unsigned char len[4];
   } msg;
     unsigned char sig[4];
     unsigned char len[4];
   } msg;


@@ -499,7 +580,7 @@ wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)
   msg.len[2] = (unsigned char) ((nbytes >> 16) & 0xff);
   msg.len[3] = (unsigned char) ((nbytes >> 24) & 0xff);
 
   msg.len[2] = (unsigned char) ((nbytes >> 16) & 0xff);
   msg.len[3] = (unsigned char) ((nbytes >> 24) & 0xff);
 

-  if (_Write((char *)&msg, sizeof(msg)) < sizeof(msg))
+  if (_Write(&msg, sizeof(msg)) < sizeof(msg))

     goto exit;
 
   total = _Write(buffer, nbytes);
     goto exit;
 
   total = _Write(buffer, nbytes);


@@ -513,7 +594,7 @@ wxSocketBase& wxSocketBase::WriteMsg(const char *buffer, wxUint32 nbytes)
   msg.sig[3] = (unsigned char) 0xde;
   msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;
 
   msg.sig[3] = (unsigned char) 0xde;
   msg.len[0] = msg.len[1] = msg.len[2] = msg.len[3] = (char) 0;
 

-  if ((_Write((char *)&msg, sizeof(msg))) < sizeof(msg))
+  if ((_Write(&msg, sizeof(msg))) < sizeof(msg))

     goto exit;
 
   // everything was OK
     goto exit;
 
   // everything was OK


@@ -527,7 +608,7 @@ exit:
   return *this;
 }
 
   return *this;
 }
 

-wxSocketBase& wxSocketBase::Unread(const char *buffer, wxUint32 nbytes)
+wxSocketBase& wxSocketBase::Unread(const void *buffer, wxUint32 nbytes)

 {
   if (nbytes != 0)
     Pushback(buffer, nbytes);
 {
   if (nbytes != 0)
     Pushback(buffer, nbytes);


@@ -578,7 +659,8 @@ wxSocketBase& wxSocketBase::Discard()
 // timeout elapses. The polling loop calls PROCESS_EVENTS(), so
 // this won't block the GUI.
 
 // timeout elapses. The polling loop calls PROCESS_EVENTS(), so
 // this won't block the GUI.
 

-bool wxSocketBase::_Wait(long seconds, long milliseconds,
+bool wxSocketBase::_Wait(long seconds,
+                         long milliseconds,

                          wxSocketEventFlags flags)
 {
   GSocketEventFlags result;
                          wxSocketEventFlags flags)
 {
   GSocketEventFlags result;


@@ -597,14 +679,12 @@ bool wxSocketBase::_Wait(long seconds, long milliseconds,
   else
     timeout = m_timeout * 1000;
 
   else
     timeout = m_timeout * 1000;
 

-  // Active polling (without using events)
+  // Wait in an active polling loop.

   //
   //

-  // NOTE: this duplicates some of the code in OnRequest (lost
-  //   connection and connection establishment handling) but
-  //   this doesn't hurt. It has to be here because the event
-  //   might be a bit delayed, and it has to be in OnRequest
-  //   as well because maybe the Wait functions are not being
-  //   used.
+  // NOTE: We duplicate some of the code in OnRequest, but this doesn't
+  //   hurt. It has to be here because the (GSocket) event might arrive
+  //   a bit delayed, and it has to be in OnRequest as well because we
+  //   don't know whether the Wait functions are being used.

   //
   // Do this at least once (important if timeout == 0, when
   // we are just polling). Also, if just polling, do not yield.
   //
   // Do this at least once (important if timeout == 0, when
   // we are just polling). Also, if just polling, do not yield.


@@ -635,7 +715,7 @@ bool wxSocketBase::_Wait(long seconds, long milliseconds,
     {
       m_connected = FALSE;
       m_establishing = FALSE;
     {
       m_connected = FALSE;
       m_establishing = FALSE;

-      return (flags & GSOCK_LOST_FLAG);
+      return (flags & GSOCK_LOST_FLAG) != 0;

     }
 
     // Wait more?
     }
 
     // Wait more?


@@ -727,11 +807,14 @@ void wxSocketBase::SaveState()
 
   state = new wxSocketState();
 
 
   state = new wxSocketState();
 

-  state->m_notify_state = m_notify_state;
-  state->m_neededreq    = m_neededreq;
-  state->m_flags        = m_flags;
-  state->m_cbk          = m_cbk;
-  state->m_cdata        = m_cdata;
+  state->m_flags      = m_flags;
+  state->m_notify     = m_notify;
+  state->m_eventmask  = m_eventmask;
+  state->m_clientData = m_clientData;
+#if WXWIN_COMPATIBILITY
+  state->m_cbk        = m_cbk;
+  state->m_cdata      = m_cdata;
+#endif // WXWIN_COMPATIBILITY

 
   m_states.Append(state);
 }
 
   m_states.Append(state);
 }


@@ -747,11 +830,14 @@ void wxSocketBase::RestoreState()
 
   state = (wxSocketState *)node->Data();
 
 
   state = (wxSocketState *)node->Data();
 

-  SetFlags(state->m_flags);
-  m_cbk       = state->m_cbk;
-  m_cdata     = state->m_cdata;
-  m_neededreq = state->m_neededreq;
-  Notify(state->m_notify_state);
+  m_flags      = state->m_flags;
+  m_notify     = state->m_notify;
+  m_eventmask  = state->m_eventmask;
+  m_clientData = state->m_clientData;
+#if WXWIN_COMPATIBILITY
+  m_cbk        = state->m_cbk;
+  m_cdata      = state->m_cdata;
+#endif // WXWIN_COMPATIBILITY

 
   delete node;
   delete state;
 
   delete node;
   delete state;


@@ -774,10 +860,13 @@ void wxSocketBase::SetFlags(wxSocketFlags flags)
   m_flags = flags;
 }
 
   m_flags = flags;
 }
 

+

 // --------------------------------------------------------------------------
 // Callbacks (now obsolete - use events instead)
 // --------------------------------------------------------------------------
 
 // --------------------------------------------------------------------------
 // Callbacks (now obsolete - use events instead)
 // --------------------------------------------------------------------------
 

+#if WXWIN_COMPATIBILITY
+

 wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_)
 {
   wxSockCbk old_cbk = cbk_;
 wxSocketBase::wxSockCbk wxSocketBase::Callback(wxSockCbk cbk_)
 {
   wxSockCbk old_cbk = cbk_;


@@ -794,51 +883,48 @@ char *wxSocketBase::CallbackData(char *data)
   return old_data;
 }
 
   return old_data;
 }
 

+#endif // WXWIN_COMPATIBILITY
+

 // --------------------------------------------------------------------------
 // --------------------------------------------------------------------------

-// Event system
+// Event handling

 // --------------------------------------------------------------------------
 
 // --------------------------------------------------------------------------
 

-// All events (INPUT, OUTPUT, CONNECTION, LOST) are now always
-// internally watched; but users will only be notified of those
-// events they are interested in.
-
-static void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket),
-                                           GSocketEvent event,
-                                           char *cdata)
+// A note on how events are processed, which is probably the most
+// difficult thing to get working right while keeping the same API
+// and functionality for all platforms.
+//
+// When GSocket detects an event, it calls wx_socket_callback, which in
+// turn just calls wxSocketBase::OnRequest in the corresponding wxSocket
+// object. OnRequest does some housekeeping, and if the event is to be
+// propagated to the user, it creates a new wxSocketEvent object and
+// posts it. The event is not processed immediately, but delayed with
+// AddPendingEvent instead. This is necessary in order to decouple the
+// event processing from wx_socket_callback; otherwise, subsequent IO
+// calls made from the user event handler would fail, as gtk callbacks
+// are not reentrant.
+//
+// Note that, unlike events, user callbacks (now deprecated) are _not_
+// decoupled from wx_socket_callback and thus they suffer from a variety
+// of problems. Avoid them where possible and use events instead.
+
+extern "C"
+void LINKAGEMODE wx_socket_callback(GSocket * WXUNUSED(socket),
+                                    GSocketEvent notification,
+                                    char *cdata)

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

-  sckobj->OnRequest((wxSocketNotify)event);
-}
-
-void wxSocketBase::SetNotify(wxSocketEventFlags flags)
-{
-  m_neededreq = flags;
-}
-
-void wxSocketBase::Notify(bool notify)
-{
-  m_notify_state = notify;
+  sckobj->OnRequest((wxSocketNotify) notification);

 }
 
 }
 

-void wxSocketBase::OnRequest(wxSocketNotify req_evt)
+void wxSocketBase::OnRequest(wxSocketNotify notification)

 {
 {

-  wxSocketEventFlags flag = -1;
-
-  switch (req_evt)
-  {
-    case GSOCK_INPUT:      flag = GSOCK_INPUT_FLAG; break;
-    case GSOCK_OUTPUT:     flag = GSOCK_OUTPUT_FLAG; break;
-    case GSOCK_CONNECTION: flag = GSOCK_CONNECTION_FLAG; break;
-    case GSOCK_LOST:       flag = GSOCK_LOST_FLAG; break;
-  }
+  // NOTE: We duplicate some of the code in _Wait, but this doesn't
+  //   hurt. It has to be here because the (GSocket) event might arrive
+  //   a bit delayed, and it has to be in _Wait as well because we don't
+  //   know whether the Wait functions are being used.

 
 

-  // This duplicates some code in _Wait, but this doesn't
-  // hurt. It has to be here because we don't know whether
-  // the Wait functions will be used, and it has to be in
-  // _Wait as well because the event might be a bit delayed.
-
-  switch(req_evt)
+  switch(notification)

   {
     case wxSOCKET_CONNECTION:
       m_establishing = FALSE;
   {
     case wxSOCKET_CONNECTION:
       m_establishing = FALSE;


@@ -868,26 +954,49 @@ void wxSocketBase::OnRequest(wxSocketNotify req_evt)
       break;
   }
 
       break;
   }
 

-  if (((m_neededreq & flag) == flag) && m_notify_state)
+  // Schedule the event
+
+  wxSocketEventFlags flag = 0;
+  switch (notification)
+  {
+    case GSOCK_INPUT:      flag = GSOCK_INPUT_FLAG; break;
+    case GSOCK_OUTPUT:     flag = GSOCK_OUTPUT_FLAG; break;
+    case GSOCK_CONNECTION: flag = GSOCK_CONNECTION_FLAG; break;
+    case GSOCK_LOST:       flag = GSOCK_LOST_FLAG; break;
+    default:
+      wxLogWarning(_("wxSocket: unknown event!."));
+      return;
+  }
+
+  if (((m_eventmask & flag) == flag) && m_notify)

   {
     if (m_handler)
     {
       wxSocketEvent event(m_id);
   {
     if (m_handler)
     {
       wxSocketEvent event(m_id);

-      event.m_socket = this;
-      event.m_event  = req_evt;
+      event.m_event      = notification;
+      event.m_clientData = m_clientData;
+      event.SetEventObject(this);

 
 

-#if USE_DELAYED_EVENTS
-      wxPostEvent(m_handler, event);
-#else
-      m_handler->ProcessEvent(event);
-#endif
+      m_handler->AddPendingEvent(event);

     }
 
     }
 

+#if WXWIN_COMPATIBILITY

     if (m_cbk)
     if (m_cbk)

-      m_cbk(*this, req_evt, m_cdata);
+      m_cbk(*this, notification, m_cdata);
+#endif // WXWIN_COMPATIBILITY

   }
 }
 
   }
 }
 

+void wxSocketBase::Notify(bool notify)
+{
+  m_notify = notify;
+}
+
+void wxSocketBase::SetNotify(wxSocketEventFlags flags)
+{
+  m_eventmask = flags;
+}
+

 void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id)
 {
   m_handler = &handler;
 void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id)
 {
   m_handler = &handler;


@@ -898,18 +1007,18 @@ void wxSocketBase::SetEventHandler(wxEvtHandler& handler, int id)
 // Pushback buffer
 // --------------------------------------------------------------------------
 
 // Pushback buffer
 // --------------------------------------------------------------------------
 

-void wxSocketBase::Pushback(const char *buffer, wxUint32 size)
+void wxSocketBase::Pushback(const void *buffer, wxUint32 size)

 {
   if (!size) return;
 
   if (m_unread == NULL)
 {
   if (!size) return;
 
   if (m_unread == NULL)

-    m_unread = (char *)malloc(size);
+    m_unread = malloc(size);

   else
   {
   else
   {

-    char *tmp;
+    void *tmp;

 
 

-    tmp = (char *)malloc(m_unrd_size + size);
-    memcpy(tmp+size, m_unread, m_unrd_size);
+    tmp = malloc(m_unrd_size + size);
+    memcpy((char *)tmp + size, m_unread, m_unrd_size);

     free(m_unread);
 
     m_unread = tmp;
     free(m_unread);
 
     m_unread = tmp;


@@ -920,7 +1029,7 @@ void wxSocketBase::Pushback(const char *buffer, wxUint32 size)
   memcpy(m_unread, buffer, size);
 }
 
   memcpy(m_unread, buffer, size);
 }
 

-wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek)
+wxUint32 wxSocketBase::GetPushback(void *buffer, wxUint32 size, bool peek)

 {
   if (!m_unrd_size)
     return 0;
 {
   if (!m_unrd_size)
     return 0;


@@ -928,7 +1037,7 @@ wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek)
   if (size > (m_unrd_size-m_unrd_cur))
     size = m_unrd_size-m_unrd_cur;
 
   if (size > (m_unrd_size-m_unrd_cur))
     size = m_unrd_size-m_unrd_cur;
 

-  memcpy(buffer, (m_unread+m_unrd_cur), size);
+  memcpy(buffer, (char *)m_unread + m_unrd_cur, size);

 
   if (!peek)
   {
 
   if (!peek)
   {


@@ -945,6 +1054,7 @@ wxUint32 wxSocketBase::GetPushback(char *buffer, wxUint32 size, bool peek)
   return size;
 }
 
   return size;
 }
 

+

 // ==========================================================================
 // wxSocketServer
 // ==========================================================================
 // ==========================================================================
 // wxSocketServer
 // ==========================================================================


@@ -995,12 +1105,12 @@ bool wxSocketServer::AcceptWith(wxSocketBase& sock, bool wait)
   // again.
 
   if (!wait)
   // again.
 
   if (!wait)

-    GSocket_SetNonBlocking(m_socket, TRUE);
+    GSocket_SetNonBlocking(m_socket, 1);

 
   child_socket = GSocket_WaitConnection(m_socket);
 
   if (!wait)
 
   child_socket = GSocket_WaitConnection(m_socket);
 
   if (!wait)

-    GSocket_SetNonBlocking(m_socket, FALSE);
+    GSocket_SetNonBlocking(m_socket, 0);

 
   if (!child_socket)
     return FALSE;
 
   if (!child_socket)
     return FALSE;


@@ -1024,7 +1134,10 @@ 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;
 }


@@ -1083,13 +1196,13 @@ bool wxSocketClient::Connect(wxSockAddress& addr_man, bool wait)
   // again.
 
   if (!wait)
   // again.
 
   if (!wait)

-    GSocket_SetNonBlocking(m_socket, TRUE);
+    GSocket_SetNonBlocking(m_socket, 1);

 
   GSocket_SetPeer(m_socket, addr_man.GetAddress());
   err = GSocket_Connect(m_socket, GSOCK_STREAMED);
 
   if (!wait)
 
   GSocket_SetPeer(m_socket, addr_man.GetAddress());
   err = GSocket_Connect(m_socket, GSOCK_STREAMED);
 
   if (!wait)

-    GSocket_SetNonBlocking(m_socket, FALSE);
+    GSocket_SetNonBlocking(m_socket, 0);

 
   if (err != GSOCK_NOERROR)
   {
 
   if (err != GSOCK_NOERROR)
   {


@@ -1151,7 +1264,7 @@ wxDatagramSocket::wxDatagramSocket( wxSockAddress& addr,
 }
 
 wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
 }
 
 wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,

-                                              char* buf,
+                                              void* buf,

                                               wxUint32 nBytes )
 {
     Read(buf, nBytes);
                                               wxUint32 nBytes )
 {
     Read(buf, nBytes);


@@ -1160,7 +1273,7 @@ wxDatagramSocket& wxDatagramSocket::RecvFrom( wxSockAddress& addr,
 }
 
 wxDatagramSocket& wxDatagramSocket::SendTo( wxSockAddress& addr,
 }
 
 wxDatagramSocket& wxDatagramSocket::SendTo( wxSockAddress& addr,

-                                            const char* buf,
+                                            const void* buf,

                                             wxUint32 nBytes )
 {
     GSocket_SetPeer(m_socket, addr.GetAddress());
                                             wxUint32 nBytes )
 {
     GSocket_SetPeer(m_socket, addr.GetAddress());


@@ -1168,37 +1281,27 @@ 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_socket = m_socket;
-}
-
-

 // ==========================================================================
 // wxSocketModule
 // ==========================================================================
 
 // ==========================================================================
 // wxSocketModule
 // ==========================================================================
 

-class WXDLLEXPORT wxSocketModule: public wxModule
+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)
 };
 
 IMPLEMENT_DYNAMIC_CLASS(wxSocketModule, wxModule)