Remove the busy-wait loops in wxAMMediaBackend::Play as they didn't

[wxWidgets.git] / src / msw / thread.cpp

diff --git a/src/msw/thread.cpp b/src/msw/thread.cpp
index 01378e3940f03dfd7516f6401e60b0642af9e116..602968aca608372e4cd2a834f85eef9807770a45 100644 (file)
--- a/src/msw/thread.cpp
+++ b/src/msw/thread.cpp
@@ -10,10 +10,6 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "thread.h"
-#endif
-

 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------


@@ -112,8 +108,8 @@ static DWORD gs_tlsThisThread = 0xFFFFFFFF;
 // calling wxMutexGuiEnter()
 static DWORD gs_idMainThread = 0;
 
 // calling wxMutexGuiEnter()
 static DWORD gs_idMainThread = 0;
 

-// if it's FALSE, some secondary thread is holding the GUI lock
-static bool gs_bGuiOwnedByMainThread = TRUE;
+// 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
 
 // 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


@@ -123,11 +119,16 @@ static wxCriticalSection *gs_critsectGui = NULL;
 // critical section which protects gs_nWaitingForGui variable
 static wxCriticalSection *gs_critsectWaitingForGui = NULL;
 
 // critical section which protects gs_nWaitingForGui variable
 static wxCriticalSection *gs_critsectWaitingForGui = NULL;
 

+// critical section which serializes WinThreadStart() and WaitForTerminate()
+// (this is a potential bottleneck, we use a single crit sect for all threads
+// in the system, but normally time spent inside it should be quite short)
+static wxCriticalSection *gs_critsectThreadDelete = NULL;
+

 // number of threads waiting for GUI in wxMutexGuiEnter()
 static size_t gs_nWaitingForGui = 0;
 
 // are we waiting for a thread termination?
 // number of threads waiting for GUI in wxMutexGuiEnter()
 static size_t gs_nWaitingForGui = 0;
 
 // are we waiting for a thread termination?

-static bool gs_waitingForThread = FALSE;
+static bool gs_waitingForThread = false;

 
 // ============================================================================
 // Windows implementation of thread and related classes
 
 // ============================================================================
 // Windows implementation of thread and related classes


@@ -191,7 +192,7 @@ wxMutexInternal::wxMutexInternal(wxMutexType WXUNUSED(mutexType))
     m_mutex = ::CreateMutex
                 (
                     NULL,       // default secutiry attributes
     m_mutex = ::CreateMutex
                 (
                     NULL,       // default secutiry attributes

-                    FALSE,      // not initially locked
+                    false,      // not initially locked

                     NULL        // no name
                 );
 
                     NULL        // no name
                 );
 


@@ -295,7 +296,7 @@ private:
 
 wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)
 {
 
 wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)
 {

-#ifndef __WXWINCE__
+#if !defined(_WIN32_WCE) || (_WIN32_WCE >= 300)

     if ( maxcount == 0 )
     {
         // make it practically infinite
     if ( maxcount == 0 )
     {
         // make it practically infinite


@@ -348,7 +349,7 @@ wxSemaError wxSemaphoreInternal::WaitTimeout(unsigned long milliseconds)
 
 wxSemaError wxSemaphoreInternal::Post()
 {
 
 wxSemaError wxSemaphoreInternal::Post()
 {

-#ifndef __WXWINCE__
+#if !defined(_WIN32_WCE) || (_WIN32_WCE >= 300)

     if ( !::ReleaseSemaphore(m_semaphore, 1, NULL /* ptr to previous count */) )
 #endif
     {
     if ( !::ReleaseSemaphore(m_semaphore, 1, NULL /* ptr to previous count */) )
 #endif
     {


@@ -370,11 +371,13 @@ wxSemaError wxSemaphoreInternal::Post()
 class wxThreadInternal
 {
 public:
 class wxThreadInternal
 {
 public:

-    wxThreadInternal()
+    wxThreadInternal(wxThread *thread)

     {
     {

+        m_thread = thread;

         m_hThread = 0;
         m_state = STATE_NEW;
         m_priority = WXTHREAD_DEFAULT_PRIORITY;
         m_hThread = 0;
         m_state = STATE_NEW;
         m_priority = WXTHREAD_DEFAULT_PRIORITY;

+        m_nRef = 1;

     }
 
     ~wxThreadInternal()
     }
 
     ~wxThreadInternal()


@@ -400,9 +403,9 @@ public:
 
     // wait for the thread to terminate, either by itself, or by asking it
     // (politely, this is not Kill()!) to do it
 
     // wait for the thread to terminate, either by itself, or by asking it
     // (politely, this is not Kill()!) to do it

-    wxThreadError WaitForTerminate(bool shouldCancel,
-                                   wxCriticalSection& cs,
-                                   wxThread::ExitCode *pRc);
+    wxThreadError WaitForTerminate(wxCriticalSection& cs,
+                                   wxThread::ExitCode *pRc,
+                                   wxThread *threadToDelete = NULL);

 
     // kill the thread unconditionally
     wxThreadError Kill();
 
     // kill the thread unconditionally
     wxThreadError Kill();


@@ -427,27 +430,61 @@ public:
     // thread function
     static THREAD_RETVAL THREAD_CALLCONV WinThreadStart(void *thread);
 
     // thread function
     static THREAD_RETVAL THREAD_CALLCONV WinThreadStart(void *thread);
 

+    void KeepAlive()
+    {
+        if ( m_thread->IsDetached() )
+            ::InterlockedIncrement(&m_nRef);
+    }
+
+    void LetDie()
+    {
+        if ( m_thread->IsDetached() && !::InterlockedDecrement(&m_nRef) )
+            delete m_thread;
+    }
+

 private:
 private:

+    // the thread we're associated with
+    wxThread *m_thread;
+

     HANDLE        m_hThread;    // handle of the thread
     wxThreadState m_state;      // state, see wxThreadState enum
     unsigned int  m_priority;   // thread priority in "wx" units
     DWORD         m_tid;        // thread id
 
     HANDLE        m_hThread;    // handle of the thread
     wxThreadState m_state;      // state, see wxThreadState enum
     unsigned int  m_priority;   // thread priority in "wx" units
     DWORD         m_tid;        // thread id
 

+    // number of threads which need this thread to remain alive, when the count
+    // reaches 0 we kill the owning wxThread -- and die ourselves with it
+    LONG m_nRef;
+

     DECLARE_NO_COPY_CLASS(wxThreadInternal)
 };
 
     DECLARE_NO_COPY_CLASS(wxThreadInternal)
 };
 

+// small class which keeps a thread alive during its lifetime
+class wxThreadKeepAlive
+{
+public:
+    wxThreadKeepAlive(wxThreadInternal& thrImpl) : m_thrImpl(thrImpl)
+        { m_thrImpl.KeepAlive(); }
+    ~wxThreadKeepAlive()
+        { m_thrImpl.LetDie(); }
+
+private:
+    wxThreadInternal& m_thrImpl;
+};
+
+

 THREAD_RETVAL THREAD_CALLCONV wxThreadInternal::WinThreadStart(void *param)
 {
     THREAD_RETVAL rc;
 THREAD_RETVAL THREAD_CALLCONV wxThreadInternal::WinThreadStart(void *param)
 {
     THREAD_RETVAL rc;

-    bool wasCancelled;
+
+    wxThread * const thread = (wxThread *)param;

 
     // first of all, check whether we hadn't been cancelled already and don't
     // start the user code at all then
 
     // first of all, check whether we hadn't been cancelled already and don't
     // start the user code at all then

-    wxThread *thread = (wxThread *)param;
-    if ( thread->m_internal->GetState() == STATE_EXITED )
+    const bool hasExited = thread->m_internal->GetState() == STATE_EXITED;
+
+    if ( hasExited )

     {
         rc = (THREAD_RETVAL)-1;
     {
         rc = (THREAD_RETVAL)-1;

-        wasCancelled = TRUE;

     }
     else // do run thread
     {
     }
     else // do run thread
     {


@@ -460,24 +497,24 @@ THREAD_RETVAL THREAD_CALLCONV wxThreadInternal::WinThreadStart(void *param)
         }
 
         rc = (THREAD_RETVAL)thread->Entry();
         }
 
         rc = (THREAD_RETVAL)thread->Entry();

-
-        // enter m_critsect before changing the thread state
-        thread->m_critsect.Enter();
-        wasCancelled = thread->m_internal->GetState() == STATE_CANCELED;
-        thread->m_internal->SetState(STATE_EXITED);
-        thread->m_critsect.Leave();

     }
 
     thread->OnExit();
 
     }
 
     thread->OnExit();
 

-    // if the thread was cancelled (from Delete()), then its handle is still
-    // needed there
-    if ( thread->IsDetached() && !wasCancelled )
+    // save IsDetached because thread object can be deleted by joinable
+    // threads after state is changed to STATE_EXITED.
+    bool isDetached = thread->IsDetached();
+
+    if ( !hasExited )

     {
     {

-        // auto delete
-        delete thread;
+        // enter m_critsect before changing the thread state
+        wxCriticalSectionLocker lock(thread->m_critsect);
+        thread->m_internal->SetState(STATE_EXITED);

     }
     }

-    //else: the joinable threads handle will be closed when Wait() is done
+
+    // the thread may delete itself now if it wants, we don't need it any more
+    if ( isDetached )
+        thread->m_internal->LetDie();

 
     return rc;
 }
 
     return rc;
 }


@@ -486,7 +523,7 @@ void wxThreadInternal::SetPriority(unsigned int priority)
 {
     m_priority = priority;
 
 {
     m_priority = priority;
 

-    // translate wxWindows priority to the Windows one
+    // translate wxWidgets priority to the Windows one

     int win_priority;
     if (m_priority <= 20)
         win_priority = THREAD_PRIORITY_LOWEST;
     int win_priority;
     if (m_priority <= 20)
         win_priority = THREAD_PRIORITY_LOWEST;


@@ -552,7 +589,7 @@ bool wxThreadInternal::Create(wxThread *thread, unsigned int stackSize)
     {
         wxLogSysError(_("Can't create thread"));
 
     {
         wxLogSysError(_("Can't create thread"));
 

-        return FALSE;
+        return false;

     }
 
     if ( m_priority != WXTHREAD_DEFAULT_PRIORITY )
     }
 
     if ( m_priority != WXTHREAD_DEFAULT_PRIORITY )


@@ -560,7 +597,7 @@ bool wxThreadInternal::Create(wxThread *thread, unsigned int stackSize)
         SetPriority(m_priority);
     }
 
         SetPriority(m_priority);
     }
 

-    return TRUE;
+    return true;

 }
 
 wxThreadError wxThreadInternal::Kill()
 }
 
 wxThreadError wxThreadInternal::Kill()


@@ -578,46 +615,49 @@ wxThreadError wxThreadInternal::Kill()
 }
 
 wxThreadError
 }
 
 wxThreadError

-wxThreadInternal::WaitForTerminate(bool shouldCancel,
-                                   wxCriticalSection& cs,
-                                   wxThread::ExitCode *pRc)
+wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
+                                   wxThread::ExitCode *pRc,
+                                   wxThread *threadToDelete)

 {
 {

-    wxThread::ExitCode rc = 0;
+    // prevent the thread C++ object from disappearing as long as we are using
+    // it here
+    wxThreadKeepAlive keepAlive(*this);
+

 
 

-    // Delete() is always safe to call, so consider all possible states
+    // we may either wait passively for the thread to terminate (when called
+    // from Wait()) or ask it to terminate (when called from Delete())
+    bool shouldDelete = threadToDelete != NULL;
+
+    wxThread::ExitCode rc = 0;

 
 

-    // we might need to resume the thread, but we might also not need to cancel
-    // it if it doesn't run yet
-    bool shouldResume = FALSE,
-         isRunning = FALSE;
+    // we might need to resume the thread if it's currently stopped
+    bool shouldResume = false;

 
 

-    // check if the thread already started to run
+    // as Delete() (which calls us) is always safe to call we need to consider
+    // all possible states

     {
         wxCriticalSectionLocker lock(cs);
 
         if ( m_state == STATE_NEW )
         {
     {
         wxCriticalSectionLocker lock(cs);
 
         if ( m_state == STATE_NEW )
         {

-            if ( shouldCancel )
+            if ( shouldDelete )

             {
                 // WinThreadStart() will see it and terminate immediately, no
                 // need to cancel the thread -- but we still need to resume it
                 // to let it run
                 m_state = STATE_EXITED;
 
             {
                 // WinThreadStart() will see it and terminate immediately, no
                 // need to cancel the thread -- but we still need to resume it
                 // to let it run
                 m_state = STATE_EXITED;
 

-                Resume();   // it knows about STATE_EXITED special case
-
-                shouldCancel = FALSE;
+                // we must call Resume() as the thread hasn't been initially
+                // resumed yet (and as Resume() it knows about STATE_EXITED
+                // special case, it won't touch it and WinThreadStart() will
+                // just exit immediately)
+                shouldResume = true;
+                shouldDelete = false;

             }
             }

-
-            isRunning = TRUE;
-
-            // shouldResume is correctly set to FALSE here
-        }
-        else if ( m_state == STATE_EXITED )
-        {
-            return wxTHREAD_NOT_RUNNING;
+            //else: shouldResume is correctly set to false here, wait until
+            //      someone else runs the thread and it finishes

         }
         }

-        else // running (but maybe paused or cancelled)
+        else // running, paused, cancelled or even exited

         {
             shouldResume = m_state == STATE_PAUSED;
         }
         {
             shouldResume = m_state == STATE_PAUSED;
         }


@@ -627,125 +667,134 @@ wxThreadInternal::WaitForTerminate(bool shouldCancel,
     if ( shouldResume )
         Resume();
 
     if ( shouldResume )
         Resume();
 

-    // is it still running?
-    if ( isRunning || m_state == STATE_RUNNING )
+    // ask the thread to terminate
+    if ( shouldDelete )
+    {
+        wxCriticalSectionLocker lock(cs);
+
+        Cancel();
+    }
+
+
+    // now wait for thread to finish
+    if ( wxThread::IsMain() )
+    {
+        // set flag for wxIsWaitingForThread()
+        gs_waitingForThread = true;
+    }
+
+    // we can't just wait for the thread to terminate because it might be
+    // calling some GUI functions and so it will never terminate before we
+    // process the Windows messages that result from these functions
+    // (note that even in console applications we might have to process
+    // messages if we use wxExecute() or timers or ...)
+    DWORD result wxDUMMY_INITIALIZE(0);
+    do

     {
         if ( wxThread::IsMain() )
         {
     {
         if ( wxThread::IsMain() )
         {

-            // set flag for wxIsWaitingForThread()
-            gs_waitingForThread = TRUE;
+            // give the thread we're waiting for chance to do the GUI call
+            // it might be in
+            if ( (gs_nWaitingForGui > 0) && wxGuiOwnedByMainThread() )
+            {
+                wxMutexGuiLeave();
+            }

         }
 
         }
 

-        // ask the thread to terminate
-        if ( shouldCancel )
-        {
-            wxCriticalSectionLocker lock(cs);
+#if !defined(QS_ALLPOSTMESSAGE)
+#define QS_ALLPOSTMESSAGE 0
+#endif

 
 

-            Cancel();
-        }
+        result = ::MsgWaitForMultipleObjects
+                 (
+                   1,              // number of objects to wait for
+                   &m_hThread,     // the objects
+                   false,          // don't wait for all objects
+                   INFINITE,       // no timeout
+                   QS_ALLINPUT|QS_ALLPOSTMESSAGE   // return as soon as there are any events
+                 );

 
 

-        // we can't just wait for the thread to terminate because it might be
-        // calling some GUI functions and so it will never terminate before we
-        // process the Windows messages that result from these functions
-        // (note that even in console applications we might have to process
-        // messages if we use wxExecute() or timers or ...)
-        DWORD result = 0;       // suppress warnings from broken compilers
-        do
+        switch ( result )

         {
         {

-            if ( wxThread::IsMain() )
-            {
-                // give the thread we're waiting for chance to do the GUI call
-                // it might be in
-                if ( (gs_nWaitingForGui > 0) && wxGuiOwnedByMainThread() )
+            case 0xFFFFFFFF:
+                // error
+                wxLogSysError(_("Can not wait for thread termination"));
+                Kill();
+                return wxTHREAD_KILLED;
+
+            case WAIT_OBJECT_0:
+                // thread we're waiting for terminated
+                break;
+
+            case WAIT_OBJECT_0 + 1:
+                // new message arrived, process it -- but only if we're the
+                // main thread as we don't support processing messages in
+                // the other ones
+                //
+                // NB: we still must include QS_ALLINPUT even when waiting
+                //     in a secondary thread because if it had created some
+                //     window somehow (possible not even using wxWidgets)
+                //     the system might dead lock then
+                if ( wxThread::IsMain() )

                 {
                 {

-                    wxMutexGuiLeave();
-                }
-            }
+                    // it looks that sometimes WAIT_OBJECT_0 + 1 is
+                    // returned but there are no messages in the thread
+                    // queue -- prevent DoMessageFromThreadWait() from
+                    // blocking inside ::GetMessage() forever in this case
+                    ::PostMessage(NULL, WM_NULL, 0, 0);

 
 

-            result = ::MsgWaitForMultipleObjects
-                     (
-                       1,              // number of objects to wait for
-                       &m_hThread,     // the objects
-                       FALSE,          // don't wait for all objects
-                       INFINITE,       // no timeout
-                       QS_ALLINPUT |   // return as soon as there are any events
-                       QS_ALLPOSTMESSAGE
-                     );
-
-            switch ( result )
-            {
-                case 0xFFFFFFFF:
-                    // error
-                    wxLogSysError(_("Can not wait for thread termination"));
-                    Kill();
-                    return wxTHREAD_KILLED;
-
-                case WAIT_OBJECT_0:
-                    // thread we're waiting for terminated
-                    break;
-
-                case WAIT_OBJECT_0 + 1:
-                    // new message arrived, process it -- but only if we're the
-                    // main thread as we don't support processing messages in
-                    // the other ones
-                    //
-                    // NB: we still must include QS_ALLINPUT even when waiting
-                    //     in a secondary thread because if it had created some
-                    //     window somehow (possible not even using wxWindows)
-                    //     the system might dead lock then
-                    if ( wxThread::IsMain() )
+                    wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits()
+                                                   : NULL;
+
+                    if ( traits && !traits->DoMessageFromThreadWait() )

                     {
                     {

-                        // it looks that sometimes WAIT_OBJECT_0 + 1 is
-                        // returned but there are no messages in the thread
-                        // queue -- prevent DoMessageFromThreadWait() from
-                        // blocking inside ::GetMessage() forever in this case
-                        ::PostMessage(NULL, WM_NULL, 0, 0);
-
-                        wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits()
-                                                       : NULL;
-
-                        if ( traits && !traits->DoMessageFromThreadWait() )
-                        {
-                            // WM_QUIT received: kill the thread
-                            Kill();
-
-                            return wxTHREAD_KILLED;
-                        }
-                    }
-                    break;
+                        // WM_QUIT received: kill the thread
+                        Kill();

 
 

-                default:
-                    wxFAIL_MSG(wxT("unexpected result of MsgWaitForMultipleObject"));
-            }
-        } while ( result != WAIT_OBJECT_0 );
+                        return wxTHREAD_KILLED;
+                    }
+                }
+                break;

 
 

-        if ( wxThread::IsMain() )
-        {
-            gs_waitingForThread = FALSE;
+            default:
+                wxFAIL_MSG(wxT("unexpected result of MsgWaitForMultipleObject"));

         }
         }

+    } while ( result != WAIT_OBJECT_0 );
+
+    if ( wxThread::IsMain() )
+    {
+        gs_waitingForThread = false;

     }
 
     }
 

+

     // although the thread might be already in the EXITED state it might not
     // have terminated yet and so we are not sure that it has actually
     // terminated if the "if" above hadn't been taken
     // although the thread might be already in the EXITED state it might not
     // have terminated yet and so we are not sure that it has actually
     // terminated if the "if" above hadn't been taken

-    do
+    for ( ;; )

     {
         if ( !::GetExitCodeThread(m_hThread, (LPDWORD)&rc) )
         {
             wxLogLastError(wxT("GetExitCodeThread"));
 
             rc = (wxThread::ExitCode)-1;
     {
         if ( !::GetExitCodeThread(m_hThread, (LPDWORD)&rc) )
         {
             wxLogLastError(wxT("GetExitCodeThread"));
 
             rc = (wxThread::ExitCode)-1;

+
+            break;

         }
         }

-    } while ( (DWORD)rc == STILL_ACTIVE );
+
+        if ( (DWORD)rc != STILL_ACTIVE )
+            break;
+
+        // give the other thread some time to terminate, otherwise we may be
+        // starving it
+        ::Sleep(1);
+    }

 
     if ( pRc )
         *pRc = rc;
 
 
     if ( pRc )
         *pRc = rc;
 

-    // we don't need the thread handle any more
+    // we don't need the thread handle any more in any case

     Free();
 
     Free();
 

-    wxCriticalSectionLocker lock(cs);
-    SetState(STATE_EXITED);

 
     return rc == (wxThread::ExitCode)-1 ? wxTHREAD_MISC_ERROR
                                         : wxTHREAD_NO_ERROR;
 
     return rc == (wxThread::ExitCode)-1 ? wxTHREAD_MISC_ERROR
                                         : wxTHREAD_NO_ERROR;


@@ -758,12 +807,12 @@ bool wxThreadInternal::Suspend()
     {
         wxLogSysError(_("Can not suspend thread %x"), m_hThread);
 
     {
         wxLogSysError(_("Can not suspend thread %x"), m_hThread);
 

-        return FALSE;
+        return false;

     }
 
     m_state = STATE_PAUSED;
 
     }
 
     m_state = STATE_PAUSED;
 

-    return TRUE;
+    return true;

 }
 
 bool wxThreadInternal::Resume()
 }
 
 bool wxThreadInternal::Resume()


@@ -773,18 +822,18 @@ bool wxThreadInternal::Resume()
     {
         wxLogSysError(_("Can not resume thread %x"), m_hThread);
 
     {
         wxLogSysError(_("Can not resume thread %x"), m_hThread);
 

-        return FALSE;
+        return false;

     }
 
     // don't change the state from STATE_EXITED because it's special and means
     // we are going to terminate without running any user code - if we did it,
     }
 
     // don't change the state from STATE_EXITED because it's special and means
     // we are going to terminate without running any user code - if we did it,

-    // the codei n Delete() wouldn't work
+    // the code in WaitForTerminate() wouldn't work

     if ( m_state != STATE_EXITED )
     {
         m_state = STATE_RUNNING;
     }
 
     if ( m_state != STATE_EXITED )
     {
         m_state = STATE_RUNNING;
     }
 

-    return TRUE;
+    return true;

 }
 
 // static functions
 }
 
 // static functions


@@ -807,7 +856,7 @@ wxThread *wxThread::This()
 
 bool wxThread::IsMain()
 {
 
 bool wxThread::IsMain()
 {

-    return ::GetCurrentThreadId() == gs_idMainThread;
+    return ::GetCurrentThreadId() == gs_idMainThread || gs_idMainThread == 0;

 }
 
 void wxThread::Yield()
 }
 
 void wxThread::Yield()


@@ -835,9 +884,11 @@ unsigned long wxThread::GetCurrentId()
     return (unsigned long)::GetCurrentThreadId();
 }
 
     return (unsigned long)::GetCurrentThreadId();
 }
 

-bool wxThread::SetConcurrency(size_t level)
+bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))

 {
 {

-#ifndef __WXWINCE__
+#ifdef __WXWINCE__
+    return false;
+#else

     wxASSERT_MSG( IsMain(), _T("should only be called from the main thread") );
 
     // ok only for the default one
     wxASSERT_MSG( IsMain(), _T("should only be called from the main thread") );
 
     // ok only for the default one


@@ -846,12 +897,12 @@ bool wxThread::SetConcurrency(size_t level)
 
     // get system affinity mask first
     HANDLE hProcess = ::GetCurrentProcess();
 
     // get system affinity mask first
     HANDLE hProcess = ::GetCurrentProcess();

-    DWORD dwProcMask, dwSysMask;
+    DWORD_PTR dwProcMask, dwSysMask;

     if ( ::GetProcessAffinityMask(hProcess, &dwProcMask, &dwSysMask) == 0 )
     {
         wxLogLastError(_T("GetProcessAffinityMask"));
 
     if ( ::GetProcessAffinityMask(hProcess, &dwProcMask, &dwSysMask) == 0 )
     {
         wxLogLastError(_T("GetProcessAffinityMask"));
 

-        return FALSE;
+        return false;

     }
 
     // how many CPUs have we got?
     }
 
     // how many CPUs have we got?


@@ -890,7 +941,7 @@ bool wxThread::SetConcurrency(size_t level)
     {
         wxLogDebug(_T("bad level %u in wxThread::SetConcurrency()"), level);
 
     {
         wxLogDebug(_T("bad level %u in wxThread::SetConcurrency()"), level);
 

-        return FALSE;
+        return false;

     }
 
     // set it: we can't link to SetProcessAffinityMask() because it doesn't
     }
 
     // set it: we can't link to SetProcessAffinityMask() because it doesn't


@@ -918,17 +969,18 @@ bool wxThread::SetConcurrency(size_t level)
     if ( !pfnSetProcessAffinityMask )
     {
         // msg given above - do it only once
     if ( !pfnSetProcessAffinityMask )
     {
         // msg given above - do it only once

-        return FALSE;
+        return false;

     }
 
     if ( pfnSetProcessAffinityMask(hProcess, dwProcMask) == 0 )
     {
         wxLogLastError(_T("SetProcessAffinityMask"));
 
     }
 
     if ( pfnSetProcessAffinityMask(hProcess, dwProcMask) == 0 )
     {
         wxLogLastError(_T("SetProcessAffinityMask"));
 

-        return FALSE;
+        return false;

     }
     }

-#endif
-    return TRUE;
+
+    return true;
+#endif // __WXWINCE__/!__WXWINCE__

 }
 
 // ctor and dtor
 }
 
 // ctor and dtor


@@ -936,7 +988,7 @@ bool wxThread::SetConcurrency(size_t level)
 
 wxThread::wxThread(wxThreadKind kind)
 {
 
 wxThread::wxThread(wxThreadKind kind)
 {

-    m_internal = new wxThreadInternal();
+    m_internal = new wxThreadInternal(this);

 
     m_isDetached = kind == wxTHREAD_DETACHED;
 }
 
     m_isDetached = kind == wxTHREAD_DETACHED;
 }


@@ -1002,14 +1054,14 @@ wxThread::ExitCode wxThread::Wait()
 
     ExitCode rc = (ExitCode)-1;
 
 
     ExitCode rc = (ExitCode)-1;
 

-    (void)m_internal->WaitForTerminate(false, m_critsect, &rc);
+    (void)m_internal->WaitForTerminate(m_critsect, &rc);

 
     return rc;
 }
 
 wxThreadError wxThread::Delete(ExitCode *pRc)
 {
 
     return rc;
 }
 
 wxThreadError wxThread::Delete(ExitCode *pRc)
 {

-    return m_internal->WaitForTerminate(true, m_critsect, pRc);
+    return m_internal->WaitForTerminate(m_critsect, pRc, this);

 }
 
 wxThreadError wxThread::Kill()
 }
 
 wxThreadError wxThread::Kill()


@@ -1137,7 +1189,7 @@ bool wxThreadModule::OnInit()
         // words, this should never happen
         wxLogSysError(_("Thread module initialization failed: impossible to allocate index in thread local storage"));
 
         // words, this should never happen
         wxLogSysError(_("Thread module initialization failed: impossible to allocate index in thread local storage"));
 

-        return FALSE;
+        return false;

     }
 
     // main thread doesn't have associated wxThread object, so store 0 in the
     }
 
     // main thread doesn't have associated wxThread object, so store 0 in the


@@ -1149,7 +1201,7 @@ bool wxThreadModule::OnInit()
 
         wxLogSysError(_("Thread module initialization failed: can not store value in thread local storage"));
 
 
         wxLogSysError(_("Thread module initialization failed: can not store value in thread local storage"));
 

-        return FALSE;
+        return false;

     }
 
     gs_critsectWaitingForGui = new wxCriticalSection();
     }
 
     gs_critsectWaitingForGui = new wxCriticalSection();


@@ -1157,10 +1209,12 @@ bool wxThreadModule::OnInit()
     gs_critsectGui = new wxCriticalSection();
     gs_critsectGui->Enter();
 
     gs_critsectGui = new wxCriticalSection();
     gs_critsectGui->Enter();
 

+    gs_critsectThreadDelete = new wxCriticalSection;
+

     // no error return for GetCurrentThreadId()
     gs_idMainThread = ::GetCurrentThreadId();
 
     // no error return for GetCurrentThreadId()
     gs_idMainThread = ::GetCurrentThreadId();
 

-    return TRUE;
+    return true;

 }
 
 void wxThreadModule::OnExit()
 }
 
 void wxThreadModule::OnExit()


@@ -1170,6 +1224,9 @@ void wxThreadModule::OnExit()
         wxLogLastError(wxT("TlsFree failed."));
     }
 
         wxLogLastError(wxT("TlsFree failed."));
     }
 

+    delete gs_critsectThreadDelete;
+    gs_critsectThreadDelete = NULL;
+

     if ( gs_critsectGui )
     {
         gs_critsectGui->Leave();
     if ( gs_critsectGui )
     {
         gs_critsectGui->Leave();


@@ -1214,7 +1271,7 @@ void WXDLLIMPEXP_BASE wxMutexGuiLeave()
 
     if ( wxThread::IsMain() )
     {
 
     if ( wxThread::IsMain() )
     {

-        gs_bGuiOwnedByMainThread = FALSE;
+        gs_bGuiOwnedByMainThread = false;

     }
     else
     {
     }
     else
     {


@@ -1245,7 +1302,7 @@ void WXDLLIMPEXP_BASE wxMutexGuiLeaveOrEnter()
         {
             gs_critsectGui->Enter();
 
         {
             gs_critsectGui->Enter();
 

-            gs_bGuiOwnedByMainThread = TRUE;
+            gs_bGuiOwnedByMainThread = true;

         }
         //else: already have it, nothing to do
     }
         }
         //else: already have it, nothing to do
     }