Fix interface definition of GetMouseCursorAt

[wxWidgets.git] / src / unix / evtloopunix.cpp

diff --git a/src/unix/evtloopunix.cpp b/src/unix/evtloopunix.cpp
index 39afb42db065a142ddfc7eae4ff88a0a1688ccdd..4b7d8fded14b85c17a2d3a04ee6958a8aa624032 100644 (file)
--- a/src/unix/evtloopunix.cpp
+++ b/src/unix/evtloopunix.cpp
@@ -5,6 +5,8 @@
 // Created:     2007-05-07
 // RCS-ID:      $Id$
 // Copyright:   (c) 2006 Zork Lukasz Michalski
 // Created:     2007-05-07
 // RCS-ID:      $Id$
 // Copyright:   (c) 2006 Zork Lukasz Michalski

+//              (c) 2009, 2013 Vadim Zeitlin <vadim@wxwidgets.org>
+//              (c) 2013 Rob Bresalier

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 


@@ -21,174 +23,198 @@
 
 #if wxUSE_CONSOLE_EVENTLOOP
 
 
 #if wxUSE_CONSOLE_EVENTLOOP
 

+#include "wx/evtloop.h"
+

 #ifndef WX_PRECOMP
     #include "wx/app.h"
     #include "wx/log.h"
 #endif
 
 #ifndef WX_PRECOMP
     #include "wx/app.h"
     #include "wx/log.h"
 #endif
 

-#include <errno.h>
-#include "wx/evtloop.h"
+#include "wx/apptrait.h"
+#include "wx/scopedptr.h"

 #include "wx/thread.h"
 #include "wx/module.h"
 #include "wx/unix/private/timer.h"
 #include "wx/unix/private/epolldispatcher.h"
 #include "wx/thread.h"
 #include "wx/module.h"
 #include "wx/unix/private/timer.h"
 #include "wx/unix/private/epolldispatcher.h"

+#include "wx/unix/private/wakeuppipe.h"

 #include "wx/private/selectdispatcher.h"
 #include "wx/private/selectdispatcher.h"

+#include "wx/private/eventloopsourcesmanager.h"
+#include "wx/private/fdioeventloopsourcehandler.h"
+#include "wx/private/eventloopsourcesmanager.h"

 
 

-#define TRACE_EVENTS _T("events")
+#if wxUSE_EVENTLOOP_SOURCE
+    #include "wx/evtloopsrc.h"
+#endif // wxUSE_EVENTLOOP_SOURCE

 
 // ===========================================================================
 
 // ===========================================================================

-// wxEventLoop::PipeIOHandler implementation
+// wxEventLoop implementation

 // ===========================================================================
 
 // ===========================================================================
 

-// ----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------

 // initialization
 // initialization

-// ----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------

 
 

-bool wxConsoleEventLoop::PipeIOHandler::Create()
+wxConsoleEventLoop::wxConsoleEventLoop()

 {
 {

-    if ( !m_pipe.Create() )
-    {
-        wxLogError(_("Failed to create wake up pipe used by event loop."));
-        return false;
-    }
+    // Be pessimistic initially and assume that we failed to initialize.
+    m_dispatcher = NULL;
+    m_wakeupPipe = NULL;
+    m_wakeupSource = NULL;
+
+    // Create the pipe.
+    wxScopedPtr<wxWakeUpPipeMT> wakeupPipe(new wxWakeUpPipeMT);
+    const int pipeFD = wakeupPipe->GetReadFd();
+    if ( pipeFD == wxPipe::INVALID_FD )
+        return;

 
 

-    const int fdRead = GetReadFd();
+    // And start monitoring it in our event loop.
+    m_wakeupSource = wxEventLoopBase::AddSourceForFD
+                                      (
+                                        pipeFD,
+                                        wakeupPipe.get(),
+                                        wxFDIO_INPUT
+                                      );

 
 

-    int flags = fcntl(fdRead, F_GETFL, 0);
-    if ( flags == -1 || fcntl(fdRead, F_SETFL, flags | O_NONBLOCK) == -1 )
-    {
-        wxLogSysError(_("Failed to switch wake up pipe to non-blocking mode"));
-        return false;
-    }
+    if ( !m_wakeupSource )
+        return;

 
 

-    wxLogTrace(TRACE_EVENTS, wxT("Wake up pipe (%d, %d) created"),
-               fdRead, m_pipe[wxPipe::Write]);
+    // This is a bit ugly but we know that AddSourceForFD() used the currently
+    // active dispatcher to register this source, so use the same one for our
+    // other operations. Of course, currently the dispatcher returned by
+    // wxFDIODispatcher::Get() is always the same one anyhow so it doesn't
+    // really matter, but if we started returning different things later, it
+    // would.
+    m_dispatcher = wxFDIODispatcher::Get();

 
 

-    return true;
+    m_wakeupPipe = wakeupPipe.release();

 }
 
 }
 

-// ----------------------------------------------------------------------------
-// wakeup handling
-// ----------------------------------------------------------------------------
-
-void wxConsoleEventLoop::PipeIOHandler::WakeUp()
+wxConsoleEventLoop::~wxConsoleEventLoop()

 {
 {

-    if ( write(m_pipe[wxPipe::Write], "s", 1) != 1 )
+    if ( m_wakeupPipe )

     {
     {

-        // don't use wxLog here, we can be in another thread and this could
-        // result in dead locks
-        perror("write(wake up pipe)");
+        delete m_wakeupSource;
+
+        delete m_wakeupPipe;

     }
 }
 
     }
 }
 

-void wxConsoleEventLoop::PipeIOHandler::OnReadWaiting()
+//-----------------------------------------------------------------------------
+// adding & removing sources
+//-----------------------------------------------------------------------------
+
+#if wxUSE_EVENTLOOP_SOURCE
+
+class wxConsoleEventLoopSourcesManager : public wxEventLoopSourcesManagerBase

 {
 {

-    // got wakeup from child thread: read all data available in pipe just to
-    // make it empty (evevn though we write one byte at a time from WakeUp(),
-    // it could have been called several times)
-    char buf[4];
-    for ( ;; )
+public:
+    wxEventLoopSource* AddSourceForFD( int fd,
+                                       wxEventLoopSourceHandler *handler,
+                                       int flags)

     {
     {

-        const int size = read(GetReadFd(), buf, WXSIZEOF(buf));
+        wxCHECK_MSG( fd != -1, NULL, "can't monitor invalid fd" );

 
 

-        if ( size == 0 || (size == -1 && errno == EAGAIN) )
-        {
-            // nothing left in the pipe (EAGAIN is expected for an FD with
-            // O_NONBLOCK)
-            break;
-        }
+        wxLogTrace(wxTRACE_EVT_SOURCE,
+                    "Adding event loop source for fd=%d", fd);

 
 

-        if ( size == -1 )
-        {
-            wxLogSysError(_("Failed to read from wake-up pipe"));
+        // we need a bridge to wxFDIODispatcher
+        //
+        // TODO: refactor the code so that only wxEventLoopSourceHandler is used
+        wxScopedPtr<wxFDIOHandler>
+            fdioHandler(new wxFDIOEventLoopSourceHandler(handler));

 
 

-            break;
-        }
-    }
+        if ( !wxFDIODispatcher::Get()->RegisterFD(fd, fdioHandler.get(), flags) )
+            return NULL;

 
 

-    wxTheApp->ProcessPendingEvents();
-}
+        return new wxUnixEventLoopSource(wxFDIODispatcher::Get(), fdioHandler.release(),
+                                         fd, handler, flags);
+    }
+};

 
 

-// ===========================================================================
-// wxEventLoop implementation
-// ===========================================================================
+wxEventLoopSourcesManagerBase* wxAppTraits::GetEventLoopSourcesManager()
+{
+    static wxConsoleEventLoopSourcesManager s_eventLoopSourcesManager;

 
 

-//-----------------------------------------------------------------------------
-// initialization
-//-----------------------------------------------------------------------------
+    return &s_eventLoopSourcesManager;
+}

 
 

-wxConsoleEventLoop::wxConsoleEventLoop()
+wxUnixEventLoopSource::~wxUnixEventLoopSource()

 {
 {

-    if ( !m_wakeupPipe.Create() )
-    {
-        m_dispatcher = NULL;
-        return;
-    }
+    wxLogTrace(wxTRACE_EVT_SOURCE,
+               "Removing event loop source for fd=%d", m_fd);

 
 

-#ifdef wxUSE_EPOLL_DISPATCHER
-    m_dispatcher = wxEpollDispatcher::Get();
-    if ( !m_dispatcher )
-#endif // wxUSE_EPOLL_DISPATCHER
-#if wxUSE_SELECT_DISPATCHER
-        m_dispatcher = wxSelectDispatcher::Get();
-#endif // wxUSE_WCHAR_T
-
-    wxCHECK_RET( m_dispatcher, _T("failed to create IO dispatcher") );
-
-    m_dispatcher->RegisterFD
-                  (
-                    m_wakeupPipe.GetReadFd(),
-                    &m_wakeupPipe,
-                    wxFDIO_INPUT
-                  );
+    m_dispatcher->UnregisterFD(m_fd);
+
+    delete m_fdioHandler;

 }
 
 }
 

+#endif // wxUSE_EVENTLOOP_SOURCE
+

 //-----------------------------------------------------------------------------
 // events dispatch and loop handling
 //-----------------------------------------------------------------------------
 
 bool wxConsoleEventLoop::Pending() const
 {
 //-----------------------------------------------------------------------------
 // events dispatch and loop handling
 //-----------------------------------------------------------------------------
 
 bool wxConsoleEventLoop::Pending() const
 {

-    return wxTheApp->HasPendingEvents();
+    if ( m_dispatcher->HasPending() )
+        return true;
+
+#if wxUSE_TIMER
+    wxUsecClock_t nextTimer;
+    if ( wxTimerScheduler::Get().GetNext(&nextTimer) &&
+            !wxMilliClockToLong(nextTimer) )
+        return true;
+#endif // wxUSE_TIMER
+
+    return false;

 }
 
 bool wxConsoleEventLoop::Dispatch()
 {
 }
 
 bool wxConsoleEventLoop::Dispatch()
 {

-    wxTheApp->ProcessPendingEvents();
-    return true;
-}
+    DispatchTimeout(static_cast<unsigned long>(
+        wxFDIODispatcher::TIMEOUT_INFINITE));

 
 

-void wxConsoleEventLoop::WakeUp()
-{
-    m_wakeupPipe.WakeUp();
+    return true;

 }
 
 }
 

-void wxConsoleEventLoop::OnNextIteration()
+int wxConsoleEventLoop::DispatchTimeout(unsigned long timeout)

 {
 {

-    // calculate the timeout until the next timer expiration
-    int timeout;
-

 #if wxUSE_TIMER
 #if wxUSE_TIMER

+    // check if we need to decrease the timeout to account for a timer

     wxUsecClock_t nextTimer;
     if ( wxTimerScheduler::Get().GetNext(&nextTimer) )
     {
     wxUsecClock_t nextTimer;
     if ( wxTimerScheduler::Get().GetNext(&nextTimer) )
     {

-        // timeout is in ms
-        timeout = (nextTimer / 1000).ToLong();
+        unsigned long timeUntilNextTimer = wxMilliClockToLong(nextTimer / 1000);
+        if ( timeUntilNextTimer < timeout )
+            timeout = timeUntilNextTimer;

     }
     }

-    else // no timers, we can block forever

 #endif // wxUSE_TIMER
 #endif // wxUSE_TIMER

-    {
-        timeout = wxFDIODispatcher::TIMEOUT_INFINITE;
-    }

 
 

-    m_dispatcher->RunLoop(timeout);
+    bool hadEvent = m_dispatcher->Dispatch(timeout) > 0;

 
 #if wxUSE_TIMER
 
 #if wxUSE_TIMER

-    wxTimerScheduler::Get().NotifyExpired();
-#endif
+    if ( wxTimerScheduler::Get().NotifyExpired() )
+        hadEvent = true;
+#endif // wxUSE_TIMER
+
+    return hadEvent ? 1 : -1;
+}
+
+void wxConsoleEventLoop::WakeUp()
+{
+    m_wakeupPipe->WakeUp();
+}

 
 

+void wxConsoleEventLoop::OnNextIteration()
+{

     // call the signal handlers for any signals we caught recently
     wxTheApp->CheckSignal();
 }
 
     // call the signal handlers for any signals we caught recently
     wxTheApp->CheckSignal();
 }
 

+
+wxEventLoopBase *wxConsoleAppTraits::CreateEventLoop()
+{
+    return new wxEventLoop();
+}
+

 #endif // wxUSE_CONSOLE_EVENTLOOP
 #endif // wxUSE_CONSOLE_EVENTLOOP