Simplify and rationalize wxGDIPlusContext class constructors.

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

diff --git a/src/msw/thread.cpp b/src/msw/thread.cpp
index 602968aca608372e4cd2a834f85eef9807770a45..58bb6013ba0491e7f13322b0f073a7ac9664dfc0 100644 (file)
--- a/src/msw/thread.cpp
+++ b/src/msw/thread.cpp
@@ -21,20 +21,24 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

+#if wxUSE_THREADS
+
+#include "wx/thread.h"
+

 #ifndef WX_PRECOMP
     #include "wx/intl.h"
     #include "wx/app.h"
 #ifndef WX_PRECOMP
     #include "wx/intl.h"
     #include "wx/app.h"

+    #include "wx/module.h"

 #endif
 
 #endif
 

-#if wxUSE_THREADS
-

 #include "wx/apptrait.h"
 #include "wx/apptrait.h"

+#include "wx/scopeguard.h"

 
 #include "wx/msw/private.h"
 #include "wx/msw/missing.h"
 
 #include "wx/msw/private.h"
 #include "wx/msw/missing.h"

+#include "wx/msw/seh.h"

 
 

-#include "wx/module.h"
-#include "wx/thread.h"
+#include "wx/except.h"

 
 // must have this symbol defined to get _beginthread/_endthread declarations
 #ifndef _MT
 
 // must have this symbol defined to get _beginthread/_endthread declarations
 #ifndef _MT


@@ -71,7 +75,8 @@
     // this is where _beginthreadex() is declared
     #include <process.h>
 
     // this is where _beginthreadex() is declared
     #include <process.h>
 

-    // the return type of the thread function entry point
+    // the return type of the thread function entry point: notice that this
+    // type can't hold a pointer under Win64

     typedef unsigned THREAD_RETVAL;
 
     // the calling convention of the thread function entry point
     typedef unsigned THREAD_RETVAL;
 
     // the calling convention of the thread function entry point


@@ -82,6 +87,8 @@
     #define THREAD_CALLCONV WINAPI
 #endif
 
     #define THREAD_CALLCONV WINAPI
 #endif
 

+static const THREAD_RETVAL THREAD_ERROR_EXIT = (THREAD_RETVAL)-1;
+

 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------


@@ -106,7 +113,7 @@ static DWORD gs_tlsThisThread = 0xFFFFFFFF;
 
 // id of the main thread - the one which can call GUI functions without first
 // calling wxMutexGuiEnter()
 
 // id of the main thread - the one which can call GUI functions without first
 // calling wxMutexGuiEnter()

-static DWORD gs_idMainThread = 0;
+wxThreadIdType wxThread::ms_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;


@@ -138,7 +145,7 @@ static bool gs_waitingForThread = false;
 // wxCriticalSection
 // ----------------------------------------------------------------------------
 
 // wxCriticalSection
 // ----------------------------------------------------------------------------
 

-wxCriticalSection::wxCriticalSection()
+wxCriticalSection::wxCriticalSection( wxCriticalSectionType WXUNUSED(critSecType) )

 {
     wxCOMPILE_TIME_ASSERT( sizeof(CRITICAL_SECTION) <= sizeof(wxCritSectBuffer),
                            wxCriticalSectionBufferTooSmall );
 {
     wxCOMPILE_TIME_ASSERT( sizeof(CRITICAL_SECTION) <= sizeof(wxCritSectBuffer),
                            wxCriticalSectionBufferTooSmall );


@@ -174,7 +181,8 @@ public:
     bool IsOk() const { return m_mutex != NULL; }
 
     wxMutexError Lock() { return LockTimeout(INFINITE); }
     bool IsOk() const { return m_mutex != NULL; }
 
     wxMutexError Lock() { return LockTimeout(INFINITE); }

-    wxMutexError TryLock() { return LockTimeout(0); }
+    wxMutexError Lock(unsigned long ms) { return LockTimeout(ms); }
+    wxMutexError TryLock();

     wxMutexError Unlock();
 
 private:
     wxMutexError Unlock();
 
 private:


@@ -182,24 +190,31 @@ private:
 
     HANDLE m_mutex;
 
 
     HANDLE m_mutex;
 

-    DECLARE_NO_COPY_CLASS(wxMutexInternal)
+    unsigned long m_owningThread;
+    wxMutexType m_type;
+
+    wxDECLARE_NO_COPY_CLASS(wxMutexInternal);

 };
 
 // all mutexes are recursive under Win32 so we don't use mutexType
 };
 
 // all mutexes are recursive under Win32 so we don't use mutexType

-wxMutexInternal::wxMutexInternal(wxMutexType WXUNUSED(mutexType))
+wxMutexInternal::wxMutexInternal(wxMutexType mutexType)

 {
     // create a nameless (hence intra process and always private) mutex
     m_mutex = ::CreateMutex
                 (
                     NULL,       // default secutiry attributes
 {
     // create a nameless (hence intra process and always private) mutex
     m_mutex = ::CreateMutex
                 (
                     NULL,       // default secutiry attributes

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

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

+    m_type = mutexType;
+    m_owningThread = 0;
+

     if ( !m_mutex )
     {
     if ( !m_mutex )
     {

-        wxLogLastError(_T("CreateMutex()"));
+        wxLogLastError(wxT("CreateMutex()"));

     }
     }

+

 }
 
 wxMutexInternal::~wxMutexInternal()
 }
 
 wxMutexInternal::~wxMutexInternal()


@@ -208,51 +223,73 @@ wxMutexInternal::~wxMutexInternal()
     {
         if ( !::CloseHandle(m_mutex) )
         {
     {
         if ( !::CloseHandle(m_mutex) )
         {

-            wxLogLastError(_T("CloseHandle(mutex)"));
+            wxLogLastError(wxT("CloseHandle(mutex)"));

         }
     }
 }
 
         }
     }
 }
 

+wxMutexError wxMutexInternal::TryLock()
+{
+    const wxMutexError rc = LockTimeout(0);
+
+    // we have a special return code for timeout in this case
+    return rc == wxMUTEX_TIMEOUT ? wxMUTEX_BUSY : rc;
+}
+

 wxMutexError wxMutexInternal::LockTimeout(DWORD milliseconds)
 {
 wxMutexError wxMutexInternal::LockTimeout(DWORD milliseconds)
 {

-    DWORD rc = ::WaitForSingleObject(m_mutex, milliseconds);
-    if ( rc == WAIT_ABANDONED )
+    if (m_type == wxMUTEX_DEFAULT)

     {
     {

-        // the previous caller died without releasing the mutex, but now we can
-        // really lock it
-        wxLogDebug(_T("WaitForSingleObject() returned WAIT_ABANDONED"));
-
-        // use 0 timeout, normally we should always get it
-        rc = ::WaitForSingleObject(m_mutex, 0);
+        // Don't allow recursive
+        if (m_owningThread != 0)
+        {
+            if (m_owningThread == wxThread::GetCurrentId())
+                return wxMUTEX_DEAD_LOCK;
+        }

     }
 
     }
 

+    DWORD rc = ::WaitForSingleObject(m_mutex, milliseconds);

     switch ( rc )
     {
     switch ( rc )
     {

+        case WAIT_ABANDONED:
+            // the previous caller died without releasing the mutex, so even
+            // though we did get it, log a message about this
+            wxLogDebug(wxT("WaitForSingleObject() returned WAIT_ABANDONED"));
+            // fall through
+

         case WAIT_OBJECT_0:
             // ok
             break;
 
         case WAIT_TIMEOUT:
         case WAIT_OBJECT_0:
             // ok
             break;
 
         case WAIT_TIMEOUT:

-            return wxMUTEX_BUSY;
+            return wxMUTEX_TIMEOUT;

 
 

-        case WAIT_ABANDONED:        // checked for above

         default:
             wxFAIL_MSG(wxT("impossible return value in wxMutex::Lock"));
             // fall through
 
         case WAIT_FAILED:
         default:
             wxFAIL_MSG(wxT("impossible return value in wxMutex::Lock"));
             // fall through
 
         case WAIT_FAILED:

-            wxLogLastError(_T("WaitForSingleObject(mutex)"));
+            wxLogLastError(wxT("WaitForSingleObject(mutex)"));

             return wxMUTEX_MISC_ERROR;
     }
 
             return wxMUTEX_MISC_ERROR;
     }
 

+    if (m_type == wxMUTEX_DEFAULT)
+    {
+        // required for checking recursiveness
+        m_owningThread = wxThread::GetCurrentId();
+    }
+

     return wxMUTEX_NO_ERROR;
 }
 
 wxMutexError wxMutexInternal::Unlock()
 {
     return wxMUTEX_NO_ERROR;
 }
 
 wxMutexError wxMutexInternal::Unlock()
 {

+    // required for checking recursiveness
+    m_owningThread = 0;
+

     if ( !::ReleaseMutex(m_mutex) )
     {
     if ( !::ReleaseMutex(m_mutex) )
     {

-        wxLogLastError(_T("ReleaseMutex()"));
+        wxLogLastError(wxT("ReleaseMutex()"));

 
         return wxMUTEX_MISC_ERROR;
     }
 
         return wxMUTEX_MISC_ERROR;
     }


@@ -291,7 +328,7 @@ public:
 private:
     HANDLE m_semaphore;
 
 private:
     HANDLE m_semaphore;
 

-    DECLARE_NO_COPY_CLASS(wxSemaphoreInternal)
+    wxDECLARE_NO_COPY_CLASS(wxSemaphoreInternal);

 };
 
 wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)
 };
 
 wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)


@@ -313,7 +350,7 @@ wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)
 #endif
     if ( !m_semaphore )
     {
 #endif
     if ( !m_semaphore )
     {

-        wxLogLastError(_T("CreateSemaphore()"));
+        wxLogLastError(wxT("CreateSemaphore()"));

     }
 }
 
     }
 }
 


@@ -323,7 +360,7 @@ wxSemaphoreInternal::~wxSemaphoreInternal()
     {
         if ( !::CloseHandle(m_semaphore) )
         {
     {
         if ( !::CloseHandle(m_semaphore) )
         {

-            wxLogLastError(_T("CloseHandle(semaphore)"));
+            wxLogLastError(wxT("CloseHandle(semaphore)"));

         }
     }
 }
         }
     }
 }


@@ -341,7 +378,7 @@ wxSemaError wxSemaphoreInternal::WaitTimeout(unsigned long milliseconds)
            return wxSEMA_TIMEOUT;
 
         default:
            return wxSEMA_TIMEOUT;
 
         default:

-            wxLogLastError(_T("WaitForSingleObject(semaphore)"));
+            wxLogLastError(wxT("WaitForSingleObject(semaphore)"));

     }
 
     return wxSEMA_MISC_ERROR;
     }
 
     return wxSEMA_MISC_ERROR;


@@ -351,14 +388,22 @@ wxSemaError wxSemaphoreInternal::Post()
 {
 #if !defined(_WIN32_WCE) || (_WIN32_WCE >= 300)
     if ( !::ReleaseSemaphore(m_semaphore, 1, NULL /* ptr to previous count */) )
 {
 #if !defined(_WIN32_WCE) || (_WIN32_WCE >= 300)
     if ( !::ReleaseSemaphore(m_semaphore, 1, NULL /* ptr to previous count */) )

-#endif

     {
     {

-        wxLogLastError(_T("ReleaseSemaphore"));
-
-        return wxSEMA_MISC_ERROR;
+        if ( GetLastError() == ERROR_TOO_MANY_POSTS )
+        {
+            return wxSEMA_OVERFLOW;
+        }
+        else
+        {
+            wxLogLastError(wxT("ReleaseSemaphore"));
+            return wxSEMA_MISC_ERROR;
+        }

     }
 
     return wxSEMA_NO_ERROR;
     }
 
     return wxSEMA_NO_ERROR;

+#else
+    return wxSEMA_MISC_ERROR;
+#endif

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -405,6 +450,7 @@ public:
     // (politely, this is not Kill()!) to do it
     wxThreadError WaitForTerminate(wxCriticalSection& cs,
                                    wxThread::ExitCode *pRc,
     // (politely, this is not Kill()!) to do it
     wxThreadError WaitForTerminate(wxCriticalSection& cs,
                                    wxThread::ExitCode *pRc,

+                                   wxThreadWait waitMode,

                                    wxThread *threadToDelete = NULL);
 
     // kill the thread unconditionally
                                    wxThread *threadToDelete = NULL);
 
     // kill the thread unconditionally


@@ -427,9 +473,16 @@ public:
     HANDLE GetHandle() const { return m_hThread; }
     DWORD  GetId() const { return m_tid; }
 
     HANDLE GetHandle() const { return m_hThread; }
     DWORD  GetId() const { return m_tid; }
 

-    // thread function
+    // the thread function forwarding to DoThreadStart

     static THREAD_RETVAL THREAD_CALLCONV WinThreadStart(void *thread);
 
     static THREAD_RETVAL THREAD_CALLCONV WinThreadStart(void *thread);
 

+    // really start the thread (if it's not already dead)
+    static THREAD_RETVAL DoThreadStart(wxThread *thread);
+
+    // call OnExit() on the thread
+    static void DoThreadOnExit(wxThread *thread);
+
+

     void KeepAlive()
     {
         if ( m_thread->IsDetached() )
     void KeepAlive()
     {
         if ( m_thread->IsDetached() )


@@ -455,7 +508,7 @@ private:
     // reaches 0 we kill the owning wxThread -- and die ourselves with it
     LONG m_nRef;
 
     // reaches 0 we kill the owning wxThread -- and die ourselves with it
     LONG m_nRef;
 

-    DECLARE_NO_COPY_CLASS(wxThreadInternal)
+    wxDECLARE_NO_COPY_CLASS(wxThreadInternal);

 };
 
 // small class which keeps a thread alive during its lifetime
 };
 
 // small class which keeps a thread alive during its lifetime


@@ -471,45 +524,77 @@ private:
     wxThreadInternal& m_thrImpl;
 };
 
     wxThreadInternal& m_thrImpl;
 };
 

-
-THREAD_RETVAL THREAD_CALLCONV wxThreadInternal::WinThreadStart(void *param)
+/* static */
+void wxThreadInternal::DoThreadOnExit(wxThread *thread)

 {
 {

-    THREAD_RETVAL rc;
+    wxTRY
+    {
+        thread->OnExit();
+    }
+    wxCATCH_ALL( wxTheApp->OnUnhandledException(); )
+}

 
 

-    wxThread * const thread = (wxThread *)param;
+/* static */
+THREAD_RETVAL wxThreadInternal::DoThreadStart(wxThread *thread)
+{
+    wxON_BLOCK_EXIT1(DoThreadOnExit, thread);

 
 

-    // first of all, check whether we hadn't been cancelled already and don't
-    // start the user code at all then
-    const bool hasExited = thread->m_internal->GetState() == STATE_EXITED;
+    THREAD_RETVAL rc = THREAD_ERROR_EXIT;

 
 

-    if ( hasExited )
-    {
-        rc = (THREAD_RETVAL)-1;
-    }
-    else // do run thread
+    wxTRY

     {
         // store the thread object in the TLS
         if ( !::TlsSetValue(gs_tlsThisThread, thread) )
         {
     {
         // store the thread object in the TLS
         if ( !::TlsSetValue(gs_tlsThisThread, thread) )
         {

-            wxLogSysError(_("Can not start thread: error writing TLS."));
+            wxLogSysError(_("Cannot start thread: error writing TLS."));

 
 

-            return (DWORD)-1;
+            return THREAD_ERROR_EXIT;

         }
 
         }
 

-        rc = (THREAD_RETVAL)thread->Entry();
+        rc = wxPtrToUInt(thread->Entry());
+    }
+    wxCATCH_ALL( wxTheApp->OnUnhandledException(); )
+
+    return rc;
+}
+
+/* static */
+THREAD_RETVAL THREAD_CALLCONV wxThreadInternal::WinThreadStart(void *param)
+{
+    THREAD_RETVAL rc = THREAD_ERROR_EXIT;
+
+    wxThread * const thread = (wxThread *)param;
+
+    // each thread has its own SEH translator so install our own a.s.a.p.
+    DisableAutomaticSETranslator();
+
+    // first of all, check whether we hadn't been cancelled already and don't
+    // start the user code at all then
+    const bool hasExited = thread->m_internal->GetState() == STATE_EXITED;
+
+    // run the thread function itself inside a SEH try/except block
+    wxSEH_TRY
+    {
+        if ( hasExited )
+            DoThreadOnExit(thread);
+        else
+            rc = DoThreadStart(thread);

     }
     }

+    wxSEH_HANDLE(THREAD_ERROR_EXIT)

 
 

-    thread->OnExit();

 
     // save IsDetached because thread object can be deleted by joinable
     // threads after state is changed to STATE_EXITED.
 
     // save IsDetached because thread object can be deleted by joinable
     // threads after state is changed to STATE_EXITED.

-    bool isDetached = thread->IsDetached();
-
+    const bool isDetached = thread->IsDetached();

     if ( !hasExited )
     {
         // enter m_critsect before changing the thread state
     if ( !hasExited )
     {
         // enter m_critsect before changing the thread state

-        wxCriticalSectionLocker lock(thread->m_critsect);
+        //
+        // NB: can't use wxCriticalSectionLocker here as we use SEH and it's
+        //     incompatible with C++ object dtors
+        thread->m_critsect.Enter();

         thread->m_internal->SetState(STATE_EXITED);
         thread->m_internal->SetState(STATE_EXITED);

+        thread->m_critsect.Leave();

     }
 
     // the thread may delete itself now if it wants, we don't need it any more
     }
 
     // the thread may delete itself now if it wants, we don't need it any more


@@ -550,7 +635,7 @@ void wxThreadInternal::SetPriority(unsigned int priority)
 bool wxThreadInternal::Create(wxThread *thread, unsigned int stackSize)
 {
     wxASSERT_MSG( m_state == STATE_NEW && !m_hThread,
 bool wxThreadInternal::Create(wxThread *thread, unsigned int stackSize)
 {
     wxASSERT_MSG( m_state == STATE_NEW && !m_hThread,

-                    _T("Create()ing thread twice?") );
+                    wxT("Create()ing thread twice?") );

 
     // for compilers which have it, we should use C RTL function for thread
     // creation instead of Win32 API one because otherwise we will have memory
 
     // for compilers which have it, we should use C RTL function for thread
     // creation instead of Win32 API one because otherwise we will have memory


@@ -602,7 +687,9 @@ bool wxThreadInternal::Create(wxThread *thread, unsigned int stackSize)
 
 wxThreadError wxThreadInternal::Kill()
 {
 
 wxThreadError wxThreadInternal::Kill()
 {

-    if ( !::TerminateThread(m_hThread, (DWORD)-1) )
+    m_thread->OnKill();
+
+    if ( !::TerminateThread(m_hThread, THREAD_ERROR_EXIT) )

     {
         wxLogSysError(_("Couldn't terminate thread"));
 
     {
         wxLogSysError(_("Couldn't terminate thread"));
 


@@ -617,6 +704,7 @@ wxThreadError wxThreadInternal::Kill()
 wxThreadError
 wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
                                    wxThread::ExitCode *pRc,
 wxThreadError
 wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
                                    wxThread::ExitCode *pRc,

+                                   wxThreadWait waitMode,

                                    wxThread *threadToDelete)
 {
     // prevent the thread C++ object from disappearing as long as we are using
                                    wxThread *threadToDelete)
 {
     // prevent the thread C++ object from disappearing as long as we are using


@@ -628,7 +716,7 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
     // from Wait()) or ask it to terminate (when called from Delete())
     bool shouldDelete = threadToDelete != NULL;
 
     // from Wait()) or ask it to terminate (when called from Delete())
     bool shouldDelete = threadToDelete != NULL;
 

-    wxThread::ExitCode rc = 0;
+    DWORD rc = 0;

 
     // we might need to resume the thread if it's currently stopped
     bool shouldResume = false;
 
     // we might need to resume the thread if it's currently stopped
     bool shouldResume = false;


@@ -675,6 +763,8 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
         Cancel();
     }
 
         Cancel();
     }
 

+    if ( threadToDelete )
+        threadToDelete->OnDelete();

 
     // now wait for thread to finish
     if ( wxThread::IsMain() )
 
     // now wait for thread to finish
     if ( wxThread::IsMain() )


@@ -701,24 +791,22 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
             }
         }
 
             }
         }
 

-#if !defined(QS_ALLPOSTMESSAGE)
-#define QS_ALLPOSTMESSAGE 0
-#endif
-
-        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
-                 );
+        wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
+        if ( traits )
+        {
+            result = traits->WaitForThread(m_hThread, waitMode);
+        }
+        else // can't wait for the thread
+        {
+            // so kill it below
+            result = 0xFFFFFFFF;
+        }

 
         switch ( result )
         {
             case 0xFFFFFFFF:
                 // error
 
         switch ( result )
         {
             case 0xFFFFFFFF:
                 // error

-                wxLogSysError(_("Can not wait for thread termination"));
+                wxLogSysError(_("Cannot wait for thread termination"));

                 Kill();
                 return wxTHREAD_KILLED;
 
                 Kill();
                 return wxTHREAD_KILLED;
 


@@ -737,15 +825,6 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
                 //     the system might dead lock then
                 if ( wxThread::IsMain() )
                 {
                 //     the system might dead lock then
                 if ( wxThread::IsMain() )
                 {

-                    // 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
                     if ( traits && !traits->DoMessageFromThreadWait() )
                     {
                         // WM_QUIT received: kill the thread


@@ -772,16 +851,16 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
     // terminated if the "if" above hadn't been taken
     for ( ;; )
     {
     // terminated if the "if" above hadn't been taken
     for ( ;; )
     {

-        if ( !::GetExitCodeThread(m_hThread, (LPDWORD)&rc) )
+        if ( !::GetExitCodeThread(m_hThread, &rc) )

         {
             wxLogLastError(wxT("GetExitCodeThread"));
 
         {
             wxLogLastError(wxT("GetExitCodeThread"));
 

-            rc = (wxThread::ExitCode)-1;
+            rc = THREAD_ERROR_EXIT;

 
             break;
         }
 
 
             break;
         }
 

-        if ( (DWORD)rc != STILL_ACTIVE )
+        if ( rc != STILL_ACTIVE )

             break;
 
         // give the other thread some time to terminate, otherwise we may be
             break;
 
         // give the other thread some time to terminate, otherwise we may be


@@ -790,14 +869,13 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
     }
 
     if ( pRc )
     }
 
     if ( pRc )

-        *pRc = rc;
+        *pRc = wxUIntToPtr(rc);

 
     // we don't need the thread handle any more in any case
     Free();
 
 
 
     // we don't need the thread handle any more in any case
     Free();
 
 

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

 }
 
 bool wxThreadInternal::Suspend()
 }
 
 bool wxThreadInternal::Suspend()


@@ -805,7 +883,7 @@ bool wxThreadInternal::Suspend()
     DWORD nSuspendCount = ::SuspendThread(m_hThread);
     if ( nSuspendCount == (DWORD)-1 )
     {
     DWORD nSuspendCount = ::SuspendThread(m_hThread);
     if ( nSuspendCount == (DWORD)-1 )
     {

-        wxLogSysError(_("Can not suspend thread %x"), m_hThread);
+        wxLogSysError(_("Cannot suspend thread %x"), m_hThread);

 
         return false;
     }
 
         return false;
     }


@@ -820,7 +898,7 @@ bool wxThreadInternal::Resume()
     DWORD nSuspendCount = ::ResumeThread(m_hThread);
     if ( nSuspendCount == (DWORD)-1 )
     {
     DWORD nSuspendCount = ::ResumeThread(m_hThread);
     if ( nSuspendCount == (DWORD)-1 )
     {

-        wxLogSysError(_("Can not resume thread %x"), m_hThread);
+        wxLogSysError(_("Cannot resume thread %x"), m_hThread);

 
         return false;
     }
 
         return false;
     }


@@ -854,11 +932,6 @@ wxThread *wxThread::This()
     return thread;
 }
 
     return thread;
 }
 

-bool wxThread::IsMain()
-{
-    return ::GetCurrentThreadId() == gs_idMainThread || gs_idMainThread == 0;
-}
-

 void wxThread::Yield()
 {
     // 0 argument to Sleep() is special and means to just give away the rest of
 void wxThread::Yield()
 {
     // 0 argument to Sleep() is special and means to just give away the rest of


@@ -866,11 +939,6 @@ void wxThread::Yield()
     ::Sleep(0);
 }
 
     ::Sleep(0);
 }
 

-void wxThread::Sleep(unsigned long milliseconds)
-{
-    ::Sleep(milliseconds);
-}
-

 int wxThread::GetCPUCount()
 {
     SYSTEM_INFO si;
 int wxThread::GetCPUCount()
 {
     SYSTEM_INFO si;


@@ -889,7 +957,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
 #ifdef __WXWINCE__
     return false;
 #else
 #ifdef __WXWINCE__
     return false;
 #else

-    wxASSERT_MSG( IsMain(), _T("should only be called from the main thread") );
+    wxASSERT_MSG( IsMain(), wxT("should only be called from the main thread") );

 
     // ok only for the default one
     if ( level == 0 )
 
     // ok only for the default one
     if ( level == 0 )


@@ -900,7 +968,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
     DWORD_PTR dwProcMask, dwSysMask;
     if ( ::GetProcessAffinityMask(hProcess, &dwProcMask, &dwSysMask) == 0 )
     {
     DWORD_PTR dwProcMask, dwSysMask;
     if ( ::GetProcessAffinityMask(hProcess, &dwProcMask, &dwSysMask) == 0 )
     {

-        wxLogLastError(_T("GetProcessAffinityMask"));
+        wxLogLastError(wxT("GetProcessAffinityMask"));

 
         return false;
     }
 
         return false;
     }


@@ -925,7 +993,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
             dwProcMask |= bit;
 
             // another process added
             dwProcMask |= bit;
 
             // another process added

-            if ( !--level )
+            if ( --level == 0 )

             {
                 // and that's enough
                 break;
             {
                 // and that's enough
                 break;


@@ -939,7 +1007,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
     // could we set all bits?
     if ( level != 0 )
     {
     // could we set all bits?
     if ( level != 0 )
     {

-        wxLogDebug(_T("bad level %u in wxThread::SetConcurrency()"), level);
+        wxLogDebug(wxT("bad level %u in wxThread::SetConcurrency()"), level);

 
         return false;
     }
 
         return false;
     }


@@ -947,14 +1015,14 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
     // set it: we can't link to SetProcessAffinityMask() because it doesn't
     // exist in Win9x, use RT binding instead
 
     // set it: we can't link to SetProcessAffinityMask() because it doesn't
     // exist in Win9x, use RT binding instead
 

-    typedef BOOL (*SETPROCESSAFFINITYMASK)(HANDLE, DWORD);
+    typedef BOOL (WINAPI *SETPROCESSAFFINITYMASK)(HANDLE, DWORD_PTR);

 
     // can use static var because we're always in the main thread here
     static SETPROCESSAFFINITYMASK pfnSetProcessAffinityMask = NULL;
 
     if ( !pfnSetProcessAffinityMask )
     {
 
     // can use static var because we're always in the main thread here
     static SETPROCESSAFFINITYMASK pfnSetProcessAffinityMask = NULL;
 
     if ( !pfnSetProcessAffinityMask )
     {

-        HMODULE hModKernel = ::LoadLibrary(_T("kernel32"));
+        HMODULE hModKernel = ::LoadLibrary(wxT("kernel32"));

         if ( hModKernel )
         {
             pfnSetProcessAffinityMask = (SETPROCESSAFFINITYMASK)
         if ( hModKernel )
         {
             pfnSetProcessAffinityMask = (SETPROCESSAFFINITYMASK)


@@ -963,7 +1031,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
 
         // we've discovered a MT version of Win9x!
         wxASSERT_MSG( pfnSetProcessAffinityMask,
 
         // we've discovered a MT version of Win9x!
         wxASSERT_MSG( pfnSetProcessAffinityMask,

-                      _T("this system has several CPUs but no SetProcessAffinityMask function?") );
+                      wxT("this system has several CPUs but no SetProcessAffinityMask function?") );

     }
 
     if ( !pfnSetProcessAffinityMask )
     }
 
     if ( !pfnSetProcessAffinityMask )


@@ -974,7 +1042,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
 
     if ( pfnSetProcessAffinityMask(hProcess, dwProcMask) == 0 )
     {
 
     if ( pfnSetProcessAffinityMask(hProcess, dwProcMask) == 0 )
     {

-        wxLogLastError(_T("SetProcessAffinityMask"));
+        wxLogLastError(wxT("SetProcessAffinityMask"));

 
         return false;
     }
 
         return false;
     }


@@ -1015,11 +1083,8 @@ wxThreadError wxThread::Run()
 {
     wxCriticalSectionLocker lock(m_critsect);
 
 {
     wxCriticalSectionLocker lock(m_critsect);
 

-    if ( m_internal->GetState() != STATE_NEW )
-    {
-        // actually, it may be almost any state at all, not only STATE_RUNNING
-        return wxTHREAD_RUNNING;
-    }
+    wxCHECK_MSG( m_internal->GetState() == STATE_NEW, wxTHREAD_RUNNING,
+             wxT("thread may only be started once after Create()") );

 
     // the thread has just been created and is still suspended - let it run
     return Resume();
 
     // the thread has just been created and is still suspended - let it run
     return Resume();


@@ -1045,23 +1110,23 @@ wxThreadError wxThread::Resume()
 // stopping thread
 // ---------------
 
 // stopping thread
 // ---------------
 

-wxThread::ExitCode wxThread::Wait()
+wxThread::ExitCode wxThread::Wait(wxThreadWait waitMode)

 {
 {

+    ExitCode rc = wxUIntToPtr(THREAD_ERROR_EXIT);
+

     // although under Windows we can wait for any thread, it's an error to
     // wait for a detached one in wxWin API
     // although under Windows we can wait for any thread, it's an error to
     // wait for a detached one in wxWin API

-    wxCHECK_MSG( !IsDetached(), (ExitCode)-1,
-                 _T("wxThread::Wait(): can't wait for detached thread") );
+    wxCHECK_MSG( !IsDetached(), rc,
+                 wxT("wxThread::Wait(): can't wait for detached thread") );

 
 

-    ExitCode rc = (ExitCode)-1;
-
-    (void)m_internal->WaitForTerminate(m_critsect, &rc);
+    (void)m_internal->WaitForTerminate(m_critsect, &rc, waitMode);

 
     return rc;
 }
 
 
     return rc;
 }
 

-wxThreadError wxThread::Delete(ExitCode *pRc)
+wxThreadError wxThread::Delete(ExitCode *pRc, wxThreadWait waitMode)

 {
 {

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

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


@@ -1101,7 +1166,7 @@ void wxThread::Exit(ExitCode status)
     }
 
 #ifdef wxUSE_BEGIN_THREAD
     }
 
 #ifdef wxUSE_BEGIN_THREAD

-    _endthreadex((unsigned)status);
+    _endthreadex(wxPtrToUInt(status));

 #else // !VC++
     ::ExitThread((DWORD)status);
 #endif // VC++/!VC++
 #else // !VC++
     ::ExitThread((DWORD)status);
 #endif // VC++/!VC++


@@ -1121,28 +1186,28 @@ void wxThread::SetPriority(unsigned int prio)
 
 unsigned int wxThread::GetPriority() const
 {
 
 unsigned int wxThread::GetPriority() const
 {

-    wxCriticalSectionLocker lock((wxCriticalSection &)m_critsect); // const_cast
+    wxCriticalSectionLocker lock(const_cast<wxCriticalSection &>(m_critsect));

 
     return m_internal->GetPriority();
 }
 
 unsigned long wxThread::GetId() const
 {
 
     return m_internal->GetPriority();
 }
 
 unsigned long wxThread::GetId() const
 {

-    wxCriticalSectionLocker lock((wxCriticalSection &)m_critsect); // const_cast
+    wxCriticalSectionLocker lock(const_cast<wxCriticalSection &>(m_critsect));

 
     return (unsigned long)m_internal->GetId();
 }
 
 bool wxThread::IsRunning() const
 {
 
     return (unsigned long)m_internal->GetId();
 }
 
 bool wxThread::IsRunning() const
 {

-    wxCriticalSectionLocker lock((wxCriticalSection &)m_critsect); // const_cast
+    wxCriticalSectionLocker lock(const_cast<wxCriticalSection &>(m_critsect));

 
     return m_internal->GetState() == STATE_RUNNING;
 }
 
 bool wxThread::IsAlive() const
 {
 
     return m_internal->GetState() == STATE_RUNNING;
 }
 
 bool wxThread::IsAlive() const
 {

-    wxCriticalSectionLocker lock((wxCriticalSection &)m_critsect); // const_cast
+    wxCriticalSectionLocker lock(const_cast<wxCriticalSection &>(m_critsect));

 
     return (m_internal->GetState() == STATE_RUNNING) ||
            (m_internal->GetState() == STATE_PAUSED);
 
     return (m_internal->GetState() == STATE_RUNNING) ||
            (m_internal->GetState() == STATE_PAUSED);


@@ -1150,14 +1215,14 @@ bool wxThread::IsAlive() const
 
 bool wxThread::IsPaused() const
 {
 
 bool wxThread::IsPaused() const
 {

-    wxCriticalSectionLocker lock((wxCriticalSection &)m_critsect); // const_cast
+    wxCriticalSectionLocker lock(const_cast<wxCriticalSection &>(m_critsect));

 
     return m_internal->GetState() == STATE_PAUSED;
 }
 
 bool wxThread::TestDestroy()
 {
 
     return m_internal->GetState() == STATE_PAUSED;
 }
 
 bool wxThread::TestDestroy()
 {

-    wxCriticalSectionLocker lock((wxCriticalSection &)m_critsect); // const_cast
+    wxCriticalSectionLocker lock(const_cast<wxCriticalSection &>(m_critsect));

 
     return m_internal->GetState() == STATE_CANCELED;
 }
 
     return m_internal->GetState() == STATE_CANCELED;
 }


@@ -1199,7 +1264,7 @@ bool wxThreadModule::OnInit()
         ::TlsFree(gs_tlsThisThread);
         gs_tlsThisThread = 0xFFFFFFFF;
 
         ::TlsFree(gs_tlsThisThread);
         gs_tlsThisThread = 0xFFFFFFFF;
 

-        wxLogSysError(_("Thread module initialization failed: can not store value in thread local storage"));
+        wxLogSysError(_("Thread module initialization failed: cannot store value in thread local storage"));

 
         return false;
     }
 
         return false;
     }


@@ -1211,8 +1276,7 @@ bool wxThreadModule::OnInit()
 
     gs_critsectThreadDelete = new wxCriticalSection;
 
 
     gs_critsectThreadDelete = new wxCriticalSection;
 

-    // no error return for GetCurrentThreadId()
-    gs_idMainThread = ::GetCurrentThreadId();
+    wxThread::ms_idMainThread = wxThread::GetCurrentId();

 
     return true;
 }
 
     return true;
 }


@@ -1224,18 +1288,15 @@ void wxThreadModule::OnExit()
         wxLogLastError(wxT("TlsFree failed."));
     }
 
         wxLogLastError(wxT("TlsFree failed."));
     }
 

-    delete gs_critsectThreadDelete;
-    gs_critsectThreadDelete = NULL;
+    wxDELETE(gs_critsectThreadDelete);

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

-        delete gs_critsectGui;
-        gs_critsectGui = NULL;
+        wxDELETE(gs_critsectGui);

     }
 
     }
 

-    delete gs_critsectWaitingForGui;
-    gs_critsectWaitingForGui = NULL;
+    wxDELETE(gs_critsectWaitingForGui);

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -1243,7 +1304,7 @@ void wxThreadModule::OnExit()
 // not a mutex, so the names are a bit confusing
 // ----------------------------------------------------------------------------
 
 // not a mutex, so the names are a bit confusing
 // ----------------------------------------------------------------------------
 

-void WXDLLIMPEXP_BASE wxMutexGuiEnter()
+void wxMutexGuiEnterImpl()

 {
     // this would dead lock everything...
     wxASSERT_MSG( !wxThread::IsMain(),
 {
     // this would dead lock everything...
     wxASSERT_MSG( !wxThread::IsMain(),


@@ -1265,7 +1326,7 @@ void WXDLLIMPEXP_BASE wxMutexGuiEnter()
     gs_critsectGui->Enter();
 }
 
     gs_critsectGui->Enter();
 }
 

-void WXDLLIMPEXP_BASE wxMutexGuiLeave()
+void wxMutexGuiLeaveImpl()

 {
     wxCriticalSectionLocker enter(*gs_critsectWaitingForGui);
 
 {
     wxCriticalSectionLocker enter(*gs_critsectWaitingForGui);
 


@@ -1326,7 +1387,7 @@ bool WXDLLIMPEXP_BASE wxGuiOwnedByMainThread()
 void WXDLLIMPEXP_BASE wxWakeUpMainThread()
 {
     // sending any message would do - hopefully WM_NULL is harmless enough
 void WXDLLIMPEXP_BASE wxWakeUpMainThread()
 {
     // sending any message would do - hopefully WM_NULL is harmless enough

-    if ( !::PostThreadMessage(gs_idMainThread, WM_NULL, 0, 0) )
+    if ( !::PostThreadMessage(wxThread::GetMainId(), WM_NULL, 0, 0) )

     {
         // should never happen
         wxLogLastError(wxT("PostThreadMessage(WM_NULL)"));
     {
         // should never happen
         wxLogLastError(wxT("PostThreadMessage(WM_NULL)"));


@@ -1345,4 +1406,3 @@ bool WXDLLIMPEXP_BASE wxIsWaitingForThread()
 #include "wx/thrimpl.cpp"
 
 #endif // wxUSE_THREADS
 #include "wx/thrimpl.cpp"
 
 #endif // wxUSE_THREADS

-