+ // Make sure the events we're interested in are enabled before waiting for
+ // them: this is really necessary here as otherwise this could happen:
+ // 1. DoRead(wxSOCKET_WAITALL) is called
+ // 2. There is nothing to read so DoWait(wxSOCKET_INPUT_FLAG) is called
+ // 3. Some, but not all data appears, wxSocketImplUnix::OnReadWaiting()
+ // is called and wxSOCKET_INPUT_FLAG events are disabled in it
+ // 4. Because of wxSOCKET_WAITALL we call DoWait() again but the events
+ // are still disabled and we block forever
+ //
+ // More elegant solution would be nice but for now simply re-enabling the
+ // events here will do
+ m_impl->ReenableEvents(flags & (wxSOCKET_INPUT_FLAG | wxSOCKET_OUTPUT_FLAG));
+
+
+ // Wait until we receive the event we're waiting for or the timeout expires
+ // (but note that we always execute the loop at least once, even if timeout
+ // is 0 as this is used for polling)
+ int rc = 0;
+ for ( bool firstTime = true; !m_interrupt; firstTime = false )
+ {
+ long timeLeft = wxMilliClockToLong(timeEnd - wxGetLocalTimeMillis());
+ if ( timeLeft < 0 )
+ {
+ if ( !firstTime )
+ break; // timed out
+
+ timeLeft = 0;
+ }
+
+ wxSocketEventFlags events;
+ if ( eventLoop )
+ {
+ // reset them before starting to wait
+ m_eventsgot = 0;
+
+ eventLoop->DispatchTimeout(timeLeft);
+
+ events = m_eventsgot;
+ }
+ else // no event loop or waiting in another thread
+ {
+ // as explained below, we should always check for wxSOCKET_LOST_FLAG
+ timeval tv;
+ SetTimeValFromMS(tv, timeLeft);
+ events = m_impl->Select(flags | wxSOCKET_LOST_FLAG, &tv);
+ }
+
+ // always check for wxSOCKET_LOST_FLAG, even if flags doesn't include
+ // it, as continuing to wait for anything else after getting it is
+ // pointless
+ if ( events & wxSOCKET_LOST_FLAG )
+ {
+ m_connected = false;
+ m_establishing = false;
+ rc = -1;
+ break;
+ }
+
+ // otherwise mask out the bits we're not interested in
+ events &= flags;
+
+ // Incoming connection (server) or connection established (client)?
+ if ( events & wxSOCKET_CONNECTION_FLAG )
+ {
+ m_connected = true;
+ m_establishing = false;
+ rc = true;
+ break;
+ }
+
+ // Data available or output buffer ready?
+ if ( (events & wxSOCKET_INPUT_FLAG) || (events & wxSOCKET_OUTPUT_FLAG) )
+ {
+ rc = true;
+ break;
+ }
+ }
projects / wxWidgets.git / blobdiff