// 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
- #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
// --------------------------------------------------------------------------
// wxWin macros
// 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
// --------------------------------------------------------------------------
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()
nbytes -= total;
buffer = (char *)buffer + total;
- // If the socket is invalid or we got all the data, return now
- if (!m_socket || !nbytes)
+ // 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
- // wxSOCKET_WAITALL | wxSOCKET_BLOCK
- // wxSOCKET_WAITALL
+ // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)
// wxSOCKET_BLOCK
// wxSOCKET_NONE
//
if (m_flags & wxSOCKET_NOWAIT)
{
- GSocket_SetNonBlocking(m_socket, TRUE);
+ GSocket_SetNonBlocking(m_socket, 1);
ret = GSocket_Read(m_socket, (char *)buffer, nbytes);
- GSocket_SetNonBlocking(m_socket, FALSE);
+ GSocket_SetNonBlocking(m_socket, 0);
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, (char *)buffer, nbytes);
nbytes -= ret;
buffer = (char *)buffer + ret;
}
- }
- }
- else
- {
- if ((m_flags & wxSOCKET_BLOCK) || WaitForRead())
- {
- ret = GSocket_Read(m_socket, (char *)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));
}
}
if (sig != 0xfeeddead)
{
- wxLogWarning( _("wxSocket: invalid signature in ReadMsg."));
+ wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));
goto exit;
}
if (sig != 0xdeadfeed)
{
- wxLogWarning( _("wxSocket: invalid signature in ReadMsg."));
+ wxLogWarning(_("wxSocket: invalid signature in ReadMsg."));
goto exit;
}
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
- // wxSOCKET_WAITALL | wxSOCKET_BLOCK
- // wxSOCKET_WAITALL
+ // wxSOCKET_WAITALL (with or without wxSOCKET_BLOCK)
// wxSOCKET_BLOCK
// wxSOCKET_NONE
//
if (m_flags & wxSOCKET_NOWAIT)
{
- GSocket_SetNonBlocking(m_socket, TRUE);
+ GSocket_SetNonBlocking(m_socket, 1);
ret = GSocket_Write(m_socket, (const char *)buffer, nbytes);
- GSocket_SetNonBlocking(m_socket, FALSE);
+ GSocket_SetNonBlocking(m_socket, 0);
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, (const char *)buffer, nbytes);
nbytes -= ret;
buffer = (const char *)buffer + ret;
}
- }
- }
- else
- {
- if ((m_flags & wxSOCKET_BLOCK) || WaitForWrite())
- {
- ret = GSocket_Write(m_socket, (const char *)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));
}
}
// 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;
// Schedule the event
- wxSocketEventFlags flag = -1;
+ 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)
// ==========================================================================
-// wxSocketServer
+// wxSocketServer
// ==========================================================================
// --------------------------------------------------------------------------
// again.
if (!wait)
- GSocket_SetNonBlocking(m_socket, TRUE);
+ GSocket_SetNonBlocking(m_socket, 1);
child_socket = GSocket_WaitConnection(m_socket);
if (!wait)
- GSocket_SetNonBlocking(m_socket, FALSE);
+ GSocket_SetNonBlocking(m_socket, 0);
if (!child_socket)
return FALSE;
sock->SetFlags(m_flags);
if (!AcceptWith(*sock, wait))
- return NULL;
+ {
+ sock->Destroy();
+ sock = NULL;
+ }
return sock;
}
// 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_SetNonBlocking(m_socket, FALSE);
+ GSocket_SetNonBlocking(m_socket, 0);
if (err != GSOCK_NOERROR)
{
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
{
- DECLARE_DYNAMIC_CLASS(wxSocketModule)
-
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)
projects / wxWidgets.git / blobdiff