adding backtab to exception list

[wxWidgets.git] / src / osx / core / evtloop_cf.cpp

diff --git a/src/osx/core/evtloop_cf.cpp b/src/osx/core/evtloop_cf.cpp
index fae9a5dc5d56b8d08b0dcf10b7d71fb9c8a67e4b..f151cb5684405c6c01444a48872fd48f2a964a19 100644 (file)
--- a/src/osx/core/evtloop_cf.cpp
+++ b/src/osx/core/evtloop_cf.cpp
@@ -38,6 +38,11 @@
 
 #include "wx/osx/private.h"
 #include "wx/osx/core/cfref.h"
 
 #include "wx/osx/private.h"
 #include "wx/osx/core/cfref.h"

+#include "wx/thread.h"
+
+#if wxUSE_GUI
+    #include "wx/nonownedwnd.h"
+#endif

 
 // ============================================================================
 // wxCFEventLoopSource and wxCFEventLoop implementation
 
 // ============================================================================
 // wxCFEventLoopSource and wxCFEventLoop implementation


@@ -102,8 +107,6 @@ wxCFEventLoop::AddSourceForFD(int fd,
     if ( !cffd )
         return NULL;
 
     if ( !cffd )
         return NULL;
 

-    source->SetFileDescriptor(cffd.release());
-

     wxCFRef<CFRunLoopSourceRef>
         cfsrc(CFFileDescriptorCreateRunLoopSource(kCFAllocatorDefault, cffd, 0));
     if ( !cfsrc )
     wxCFRef<CFRunLoopSourceRef>
         cfsrc(CFFileDescriptorCreateRunLoopSource(kCFAllocatorDefault, cffd, 0));
     if ( !cfsrc )


@@ -112,6 +115,8 @@ wxCFEventLoop::AddSourceForFD(int fd,
     CFRunLoopRef cfloop = CFGetCurrentRunLoop();
     CFRunLoopAddSource(cfloop, cfsrc, kCFRunLoopDefaultMode);
 
     CFRunLoopRef cfloop = CFGetCurrentRunLoop();
     CFRunLoopAddSource(cfloop, cfsrc, kCFRunLoopDefaultMode);
 

+    source->SetFileDescriptor(cffd.release());
+

     return source.release();
 }
 
     return source.release();
 }
 


@@ -142,14 +147,14 @@ wxCFEventLoop::AddSourceForFD(int WXUNUSED(fd),
 
 #endif // wxUSE_EVENTLOOP_SOURCE
 
 
 #endif // wxUSE_EVENTLOOP_SOURCE
 

-void wxObserverCallBack(CFRunLoopObserverRef observer, CFRunLoopActivity activity, void *info)
+extern "C" void wxObserverCallBack(CFRunLoopObserverRef observer, CFRunLoopActivity activity, void *info)

 {
     wxCFEventLoop * eventloop = static_cast<wxCFEventLoop *>(info);
     if ( eventloop )
         eventloop->ObserverCallBack(observer, activity);
 {
     wxCFEventLoop * eventloop = static_cast<wxCFEventLoop *>(info);
     if ( eventloop )
         eventloop->ObserverCallBack(observer, activity);

-}        
+}

 
 

-void wxCFEventLoop::ObserverCallBack(CFRunLoopObserverRef observer, int activity)
+void wxCFEventLoop::ObserverCallBack(CFRunLoopObserverRef WXUNUSED(observer), int activity)

 {
     if ( activity & kCFRunLoopBeforeTimers )
     {
 {
     if ( activity & kCFRunLoopBeforeTimers )
     {


@@ -164,7 +169,7 @@ void wxCFEventLoop::ObserverCallBack(CFRunLoopObserverRef observer, int activity
         if ( wxTheApp )
             wxTheApp->ProcessPendingEvents();
     }
         if ( wxTheApp )
             wxTheApp->ProcessPendingEvents();
     }

-    
+

     if ( activity & kCFRunLoopBeforeWaiting )
     {
         if ( ProcessIdle() )
     if ( activity & kCFRunLoopBeforeWaiting )
     {
         if ( ProcessIdle() )


@@ -174,9 +179,7 @@ void wxCFEventLoop::ObserverCallBack(CFRunLoopObserverRef observer, int activity
         else
         {
 #if wxUSE_THREADS
         else
         {
 #if wxUSE_THREADS

-            wxMutexGuiLeave();
-            wxMilliSleep(20);
-            wxMutexGuiEnter();
+            wxMutexGuiLeaveOrEnter();

 #endif
         }
     }
 #endif
         }
     }


@@ -185,22 +188,23 @@ void wxCFEventLoop::ObserverCallBack(CFRunLoopObserverRef observer, int activity
 wxCFEventLoop::wxCFEventLoop()
 {
     m_shouldExit = false;
 wxCFEventLoop::wxCFEventLoop()
 {
     m_shouldExit = false;

-    
+

     m_runLoop = CFGetCurrentRunLoop();
     m_runLoop = CFGetCurrentRunLoop();

-    
+

     CFRunLoopObserverContext ctxt;
     bzero( &ctxt, sizeof(ctxt) );
     ctxt.info = this;
     CFRunLoopObserverContext ctxt;
     bzero( &ctxt, sizeof(ctxt) );
     ctxt.info = this;

-    m_runLoopObserver = CFRunLoopObserverCreate( kCFAllocatorDefault, kCFRunLoopBeforeTimers | kCFRunLoopBeforeWaiting , true /* repeats */, 0, 
-                                                wxObserverCallBack, &ctxt );
-    CFRunLoopAddObserver(m_runLoop, m_runLoopObserver, kCFRunLoopDefaultMode);
+    m_runLoopObserver = CFRunLoopObserverCreate( kCFAllocatorDefault, kCFRunLoopBeforeTimers | kCFRunLoopBeforeWaiting , true /* repeats */, 0,
+                                            wxObserverCallBack, &ctxt );
+    CFRunLoopAddObserver(m_runLoop, m_runLoopObserver, kCFRunLoopCommonModes);
+    CFRelease(m_runLoopObserver);

 }
 
 wxCFEventLoop::~wxCFEventLoop()
 {
 }
 
 wxCFEventLoop::~wxCFEventLoop()
 {

-    CFRunLoopRemoveObserver(m_runLoop, m_runLoopObserver, kCFRunLoopDefaultMode);
+    CFRunLoopRemoveObserver(m_runLoop, m_runLoopObserver, kCFRunLoopCommonModes);

 }
 }

-                        
+

 
 CFRunLoopRef wxCFEventLoop::CFGetCurrentRunLoop() const
 {
 
 CFRunLoopRef wxCFEventLoop::CFGetCurrentRunLoop() const
 {


@@ -209,11 +213,21 @@ CFRunLoopRef wxCFEventLoop::CFGetCurrentRunLoop() const
 
 void wxCFEventLoop::WakeUp()
 {
 
 void wxCFEventLoop::WakeUp()
 {

-    extern void wxMacWakeUp();
-    
-    wxMacWakeUp();
+    CFRunLoopWakeUp(m_runLoop);
+}
+
+#if wxUSE_BASE
+
+void wxMacWakeUp()
+{
+    wxEventLoopBase * const loop = wxEventLoopBase::GetActive();
+
+    if ( loop )
+        loop->WakeUp();

 }
 
 }
 

+#endif
+

 bool wxCFEventLoop::YieldFor(long eventsToProcess)
 {
 #if wxUSE_THREADS
 bool wxCFEventLoop::YieldFor(long eventsToProcess)
 {
 #if wxUSE_THREADS


@@ -224,34 +238,34 @@ bool wxCFEventLoop::YieldFor(long eventsToProcess)
         return true;
     }
 #endif // wxUSE_THREADS
         return true;
     }
 #endif // wxUSE_THREADS

-    
+

     m_isInsideYield = true;
     m_eventsToProcessInsideYield = eventsToProcess;
     m_isInsideYield = true;
     m_eventsToProcessInsideYield = eventsToProcess;

-    
+

 #if wxUSE_LOG
     // disable log flushing from here because a call to wxYield() shouldn't
     // normally result in message boxes popping up &c
     wxLog::Suspend();
 #endif // wxUSE_LOG
 #if wxUSE_LOG
     // disable log flushing from here because a call to wxYield() shouldn't
     // normally result in message boxes popping up &c
     wxLog::Suspend();
 #endif // wxUSE_LOG

-    
+

     // process all pending events:
     while ( DoProcessEvents() == 1 )
         ;
     // process all pending events:
     while ( DoProcessEvents() == 1 )
         ;

-    
+

     // it's necessary to call ProcessIdle() to update the frames sizes which
     // might have been changed (it also will update other things set from
     // OnUpdateUI() which is a nice (and desired) side effect)
     while ( ProcessIdle() ) {}
     // it's necessary to call ProcessIdle() to update the frames sizes which
     // might have been changed (it also will update other things set from
     // OnUpdateUI() which is a nice (and desired) side effect)
     while ( ProcessIdle() ) {}

-    
+

     // if there are pending events, we must process them.
     if (wxTheApp)
         wxTheApp->ProcessPendingEvents();
     // if there are pending events, we must process them.
     if (wxTheApp)
         wxTheApp->ProcessPendingEvents();

-    
+

 #if wxUSE_LOG
     wxLog::Resume();
 #endif // wxUSE_LOG
     m_isInsideYield = false;
 #if wxUSE_LOG
     wxLog::Resume();
 #endif // wxUSE_LOG
     m_isInsideYield = false;

-    
+

     return true;
 }
 
     return true;
 }
 


@@ -263,7 +277,7 @@ bool wxCFEventLoop::Pending() const
 
 int wxCFEventLoop::DoProcessEvents()
 {
 
 int wxCFEventLoop::DoProcessEvents()
 {

-    return DispatchTimeout( 1000 );
+    return DispatchTimeout( 0 );

 }
 
 bool wxCFEventLoop::Dispatch()
 }
 
 bool wxCFEventLoop::Dispatch()


@@ -277,7 +291,7 @@ int wxCFEventLoop::DispatchTimeout(unsigned long timeout)
         return 0;
 
     int status = DoDispatchTimeout(timeout);
         return 0;
 
     int status = DoDispatchTimeout(timeout);

-    
+

     switch( status )
     {
         case 0:
     switch( status )
     {
         case 0:


@@ -285,17 +299,17 @@ int wxCFEventLoop::DispatchTimeout(unsigned long timeout)
         case -1:
             if ( m_shouldExit )
                 return 0;
         case -1:
             if ( m_shouldExit )
                 return 0;

-            
+

             break;
         case 1:
             break;
     }
             break;
         case 1:
             break;
     }

-    
+

     return status;
 }
 
 int wxCFEventLoop::DoDispatchTimeout(unsigned long timeout)
     return status;
 }
 
 int wxCFEventLoop::DoDispatchTimeout(unsigned long timeout)

-{    
+{

     SInt32 status = CFRunLoopRunInMode(kCFRunLoopDefaultMode, timeout / 1000.0 , true);
     switch( status )
     {
     SInt32 status = CFRunLoopRunInMode(kCFRunLoopDefaultMode, timeout / 1000.0 , true);
     switch( status )
     {


@@ -322,7 +336,7 @@ void wxCFEventLoop::DoRun()
         // generate and process idle events for as long as we don't
         // have anything else to do
         DoProcessEvents();
         // generate and process idle events for as long as we don't
         // have anything else to do
         DoProcessEvents();

-        
+

         // if the "should exit" flag is set, the loop should terminate
         // but not before processing any remaining messages so while
         // Pending() returns true, do process them
         // if the "should exit" flag is set, the loop should terminate
         // but not before processing any remaining messages so while
         // Pending() returns true, do process them


@@ -330,7 +344,7 @@ void wxCFEventLoop::DoRun()
         {
             while ( DoProcessEvents() == 1 )
                 ;
         {
             while ( DoProcessEvents() == 1 )
                 ;

-            
+

             break;
         }
     }
             break;
         }
     }


@@ -347,12 +361,12 @@ int wxCFEventLoop::Run()
 {
     // event loops are not recursive, you need to create another loop!
     wxCHECK_MSG( !IsRunning(), -1, wxT("can't reenter a message loop") );
 {
     // event loops are not recursive, you need to create another loop!
     wxCHECK_MSG( !IsRunning(), -1, wxT("can't reenter a message loop") );

-    
+

     // ProcessIdle() and ProcessEvents() below may throw so the code here should
     // be exception-safe, hence we must use local objects for all actions we
     // should undo
     wxEventLoopActivator activate(this);
     // ProcessIdle() and ProcessEvents() below may throw so the code here should
     // be exception-safe, hence we must use local objects for all actions we
     // should undo
     wxEventLoopActivator activate(this);

-    
+

     // we must ensure that OnExit() is called even if an exception is thrown
     // from inside ProcessEvents() but we must call it from Exit() in normal
     // situations because it is supposed to be called synchronously,
     // we must ensure that OnExit() is called even if an exception is thrown
     // from inside ProcessEvents() but we must call it from Exit() in normal
     // situations because it is supposed to be called synchronously,


@@ -364,9 +378,9 @@ int wxCFEventLoop::Run()
         try
         {
 #endif // wxUSE_EXCEPTIONS
         try
         {
 #endif // wxUSE_EXCEPTIONS

-            
+

             DoRun();
             DoRun();

-            
+

 #if wxUSE_EXCEPTIONS
             // exit the outer loop as well
             break;
 #if wxUSE_EXCEPTIONS
             // exit the outer loop as well
             break;


@@ -393,7 +407,7 @@ int wxCFEventLoop::Run()
         }
     }
 #endif // wxUSE_EXCEPTIONS
         }
     }
 #endif // wxUSE_EXCEPTIONS

-    
+

     return m_exitcode;
 }
 
     return m_exitcode;
 }
 


@@ -406,26 +420,138 @@ void wxCFEventLoop::Exit(int rc)
     DoStop();
 }
 
     DoStop();
 }
 

-#if wxUSE_GUI
+// TODO Move to thread_osx.cpp
+
+#if wxUSE_THREADS
+
+// ----------------------------------------------------------------------------
+// GUI Serialization copied from MSW implementation
+// ----------------------------------------------------------------------------
+
+// if it's false, some secondary thread is holding the GUI lock
+static bool gs_bGuiOwnedByMainThread = true;
+
+// critical section which controls access to all GUI functions: any secondary
+// thread (i.e. except the main one) must enter this crit section before doing
+// any GUI calls
+static wxCriticalSection *gs_critsectGui = NULL;

 
 

-wxModalEventLoop::wxModalEventLoop(wxWindow *winModal)
+// critical section which protects gs_nWaitingForGui variable
+static wxCriticalSection *gs_critsectWaitingForGui = NULL;
+
+// number of threads waiting for GUI in wxMutexGuiEnter()
+static size_t gs_nWaitingForGui = 0;
+
+void wxOSXThreadModuleOnInit()
+{
+    gs_critsectWaitingForGui = new wxCriticalSection();
+    gs_critsectGui = new wxCriticalSection();
+    gs_critsectGui->Enter();
+}
+
+
+void wxOSXThreadModuleOnExit()

 {
 {

-    m_modalWindow = dynamic_cast<wxNonOwnedWindow*> (winModal);
-    wxASSERT_MSG( m_modalWindow != NULL, "must pass in a toplevel window for modal event loop" );
+    if ( gs_critsectGui )
+    {
+        if ( !wxGuiOwnedByMainThread() )
+        {
+            gs_critsectGui->Enter();
+            gs_bGuiOwnedByMainThread = true;
+        }
+
+        gs_critsectGui->Leave();
+        wxDELETE(gs_critsectGui);
+    }
+
+    wxDELETE(gs_critsectWaitingForGui);

 }
 
 }
 

-#ifdef __WXOSX_IPHONE__

 
 

-void wxModalEventLoop::DoRun()
+// wake up the main thread
+void WXDLLIMPEXP_BASE wxWakeUpMainThread()

 {
 {

-    // presentModalViewController:animated:
+    wxMacWakeUp();

 }
 
 }
 

-void wxModalEventLoop::DoStop()
+void wxMutexGuiEnterImpl()

 {
 {

-    // (void)dismissModalViewControllerAnimated:(BOOL)animated
+    // this would dead lock everything...
+    wxASSERT_MSG( !wxThread::IsMain(),
+                 wxT("main thread doesn't want to block in wxMutexGuiEnter()!") );
+
+    // the order in which we enter the critical sections here is crucial!!
+
+    // set the flag telling to the main thread that we want to do some GUI
+    {
+        wxCriticalSectionLocker enter(*gs_critsectWaitingForGui);
+
+        gs_nWaitingForGui++;
+    }
+
+    wxWakeUpMainThread();
+
+    // now we may block here because the main thread will soon let us in
+    // (during the next iteration of OnIdle())
+    gs_critsectGui->Enter();

 }
 
 }
 

-#endif // wxUSE_GUI
+void wxMutexGuiLeaveImpl()
+{
+    wxCriticalSectionLocker enter(*gs_critsectWaitingForGui);
+
+    if ( wxThread::IsMain() )
+    {
+        gs_bGuiOwnedByMainThread = false;
+    }
+    else
+    {
+        // decrement the number of threads waiting for GUI access now
+        wxASSERT_MSG( gs_nWaitingForGui > 0,
+                     wxT("calling wxMutexGuiLeave() without entering it first?") );
+
+        gs_nWaitingForGui--;
+
+        wxWakeUpMainThread();
+    }
+
+    gs_critsectGui->Leave();
+}
+
+void WXDLLIMPEXP_BASE wxMutexGuiLeaveOrEnter()
+{
+    wxASSERT_MSG( wxThread::IsMain(),
+                 wxT("only main thread may call wxMutexGuiLeaveOrEnter()!") );
+
+    if ( !gs_critsectWaitingForGui )
+        return;
+
+    wxCriticalSectionLocker enter(*gs_critsectWaitingForGui);
+
+    if ( gs_nWaitingForGui == 0 )
+    {
+        // no threads are waiting for GUI - so we may acquire the lock without
+        // any danger (but only if we don't already have it)
+        if ( !wxGuiOwnedByMainThread() )
+        {
+            gs_critsectGui->Enter();
+
+            gs_bGuiOwnedByMainThread = true;
+        }
+        //else: already have it, nothing to do
+    }
+    else
+    {
+        // some threads are waiting, release the GUI lock if we have it
+        if ( wxGuiOwnedByMainThread() )
+            wxMutexGuiLeave();
+        //else: some other worker thread is doing GUI
+    }
+}
+
+bool WXDLLIMPEXP_BASE wxGuiOwnedByMainThread()
+{
+    return gs_bGuiOwnedByMainThread;
+}

 
 #endif
 
 #endif