X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1654ef4c9809ef7264db3eb9855345f5f61f01e0..8a31648287be0ef976f133de2786b137f1e98340:/src/msw/thread.cpp?ds=sidebyside

diff --git a/src/msw/thread.cpp b/src/msw/thread.cpp
index 2a692e374d..d57bbb9b0f 100644
--- a/src/msw/thread.cpp
+++ b/src/msw/thread.cpp
@@ -40,6 +40,8 @@
 
 #include "wx/except.h"
 
+#include "wx/dynlib.h"
+
 // must have this symbol defined to get _beginthread/_endthread declarations
 #ifndef _MT
     #define _MT
@@ -113,7 +115,7 @@ static DWORD gs_tlsThisThread = 0xFFFFFFFF;
 
 // 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;
@@ -163,6 +165,25 @@ void wxCriticalSection::Enter()
     ::EnterCriticalSection((CRITICAL_SECTION *)m_buffer);
 }
 
+bool wxCriticalSection::TryEnter()
+{
+#if wxUSE_DYNLIB_CLASS
+    typedef BOOL
+      (WINAPI *TryEnterCriticalSection_t)(LPCRITICAL_SECTION lpCriticalSection);
+
+    static TryEnterCriticalSection_t
+        pfnTryEnterCriticalSection = (TryEnterCriticalSection_t)
+            wxDynamicLibrary(wxT("kernel32.dll")).
+                GetSymbol(wxT("TryEnterCriticalSection"));
+
+    return pfnTryEnterCriticalSection
+            ? (*pfnTryEnterCriticalSection)((CRITICAL_SECTION *)m_buffer) != 0
+            : false;
+#else
+    return false;
+#endif
+}
+
 void wxCriticalSection::Leave()
 {
     ::LeaveCriticalSection((CRITICAL_SECTION *)m_buffer);
@@ -193,7 +214,7 @@ private:
     unsigned long m_owningThread;
     wxMutexType m_type;
 
-    DECLARE_NO_COPY_CLASS(wxMutexInternal)
+    wxDECLARE_NO_COPY_CLASS(wxMutexInternal);
 };
 
 // all mutexes are recursive under Win32 so we don't use mutexType
@@ -212,7 +233,7 @@ wxMutexInternal::wxMutexInternal(wxMutexType mutexType)
 
     if ( !m_mutex )
     {
-        wxLogLastError(_T("CreateMutex()"));
+        wxLogLastError(wxT("CreateMutex()"));
     }
 
 }
@@ -223,7 +244,7 @@ wxMutexInternal::~wxMutexInternal()
     {
         if ( !::CloseHandle(m_mutex) )
         {
-            wxLogLastError(_T("CloseHandle(mutex)"));
+            wxLogLastError(wxT("CloseHandle(mutex)"));
         }
     }
 }
@@ -254,7 +275,7 @@ wxMutexError wxMutexInternal::LockTimeout(DWORD milliseconds)
         case WAIT_ABANDONED:
             // the previous caller died without releasing the mutex, so even
             // though we did get it, log a message about this
-            wxLogDebug(_T("WaitForSingleObject() returned WAIT_ABANDONED"));
+            wxLogDebug(wxT("WaitForSingleObject() returned WAIT_ABANDONED"));
             // fall through
 
         case WAIT_OBJECT_0:
@@ -269,7 +290,7 @@ wxMutexError wxMutexInternal::LockTimeout(DWORD milliseconds)
             // fall through
 
         case WAIT_FAILED:
-            wxLogLastError(_T("WaitForSingleObject(mutex)"));
+            wxLogLastError(wxT("WaitForSingleObject(mutex)"));
             return wxMUTEX_MISC_ERROR;
     }
 
@@ -289,7 +310,7 @@ wxMutexError wxMutexInternal::Unlock()
 
     if ( !::ReleaseMutex(m_mutex) )
     {
-        wxLogLastError(_T("ReleaseMutex()"));
+        wxLogLastError(wxT("ReleaseMutex()"));
 
         return wxMUTEX_MISC_ERROR;
     }
@@ -328,7 +349,7 @@ public:
 private:
     HANDLE m_semaphore;
 
-    DECLARE_NO_COPY_CLASS(wxSemaphoreInternal)
+    wxDECLARE_NO_COPY_CLASS(wxSemaphoreInternal);
 };
 
 wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)
@@ -350,7 +371,7 @@ wxSemaphoreInternal::wxSemaphoreInternal(int initialcount, int maxcount)
 #endif
     if ( !m_semaphore )
     {
-        wxLogLastError(_T("CreateSemaphore()"));
+        wxLogLastError(wxT("CreateSemaphore()"));
     }
 }
 
@@ -360,7 +381,7 @@ wxSemaphoreInternal::~wxSemaphoreInternal()
     {
         if ( !::CloseHandle(m_semaphore) )
         {
-            wxLogLastError(_T("CloseHandle(semaphore)"));
+            wxLogLastError(wxT("CloseHandle(semaphore)"));
         }
     }
 }
@@ -378,7 +399,7 @@ wxSemaError wxSemaphoreInternal::WaitTimeout(unsigned long milliseconds)
            return wxSEMA_TIMEOUT;
 
         default:
-            wxLogLastError(_T("WaitForSingleObject(semaphore)"));
+            wxLogLastError(wxT("WaitForSingleObject(semaphore)"));
     }
 
     return wxSEMA_MISC_ERROR;
@@ -395,7 +416,7 @@ wxSemaError wxSemaphoreInternal::Post()
         }
         else
         {
-            wxLogLastError(_T("ReleaseSemaphore"));
+            wxLogLastError(wxT("ReleaseSemaphore"));
             return wxSEMA_MISC_ERROR;
         }
     }
@@ -450,6 +471,7 @@ public:
     // (politely, this is not Kill()!) to do it
     wxThreadError WaitForTerminate(wxCriticalSection& cs,
                                    wxThread::ExitCode *pRc,
+                                   wxThreadWait waitMode,
                                    wxThread *threadToDelete = NULL);
 
     // kill the thread unconditionally
@@ -507,7 +529,7 @@ private:
     // 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
@@ -545,7 +567,7 @@ THREAD_RETVAL wxThreadInternal::DoThreadStart(wxThread *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 THREAD_ERROR_EXIT;
         }
@@ -634,7 +656,7 @@ void wxThreadInternal::SetPriority(unsigned int priority)
 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
@@ -686,6 +708,8 @@ bool wxThreadInternal::Create(wxThread *thread, unsigned int stackSize)
 
 wxThreadError wxThreadInternal::Kill()
 {
+    m_thread->OnKill();
+
     if ( !::TerminateThread(m_hThread, THREAD_ERROR_EXIT) )
     {
         wxLogSysError(_("Couldn't terminate thread"));
@@ -701,6 +725,7 @@ wxThreadError wxThreadInternal::Kill()
 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
@@ -759,6 +784,8 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
         Cancel();
     }
 
+    if ( threadToDelete )
+        threadToDelete->OnDelete();
 
     // now wait for thread to finish
     if ( wxThread::IsMain() )
@@ -788,7 +815,7 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
         wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
         if ( traits )
         {
-            result = traits->WaitForThread(m_hThread);
+            result = traits->WaitForThread(m_hThread, waitMode);
         }
         else // can't wait for the thread
         {
@@ -800,7 +827,7 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
         {
             case 0xFFFFFFFF:
                 // error
-                wxLogSysError(_("Can not wait for thread termination"));
+                wxLogSysError(_("Cannot wait for thread termination"));
                 Kill();
                 return wxTHREAD_KILLED;
 
@@ -877,7 +904,7 @@ bool wxThreadInternal::Suspend()
     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;
     }
@@ -892,7 +919,7 @@ bool wxThreadInternal::Resume()
     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;
     }
@@ -926,11 +953,6 @@ wxThread *wxThread::This()
     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
@@ -956,7 +978,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
 #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 )
@@ -967,7 +989,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
     DWORD_PTR dwProcMask, dwSysMask;
     if ( ::GetProcessAffinityMask(hProcess, &dwProcMask, &dwSysMask) == 0 )
     {
-        wxLogLastError(_T("GetProcessAffinityMask"));
+        wxLogLastError(wxT("GetProcessAffinityMask"));
 
         return false;
     }
@@ -1006,7 +1028,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
     // 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;
     }
@@ -1021,7 +1043,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
 
     if ( !pfnSetProcessAffinityMask )
     {
-        HMODULE hModKernel = ::LoadLibrary(_T("kernel32"));
+        HMODULE hModKernel = ::LoadLibrary(wxT("kernel32"));
         if ( hModKernel )
         {
             pfnSetProcessAffinityMask = (SETPROCESSAFFINITYMASK)
@@ -1030,7 +1052,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
 
         // 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 )
@@ -1041,7 +1063,7 @@ bool wxThread::SetConcurrency(size_t WXUNUSED_IN_WINCE(level))
 
     if ( pfnSetProcessAffinityMask(hProcess, dwProcMask) == 0 )
     {
-        wxLogLastError(_T("SetProcessAffinityMask"));
+        wxLogLastError(wxT("SetProcessAffinityMask"));
 
         return false;
     }
@@ -1082,11 +1104,8 @@ wxThreadError wxThread::Run()
 {
     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();
@@ -1112,23 +1131,23 @@ wxThreadError wxThread::Resume()
 // 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
     wxCHECK_MSG( !IsDetached(), rc,
-                 _T("wxThread::Wait(): can't wait for detached thread") );
+                 wxT("wxThread::Wait(): can't wait for detached thread") );
 
-    (void)m_internal->WaitForTerminate(m_critsect, &rc);
+    (void)m_internal->WaitForTerminate(m_critsect, &rc, waitMode);
 
     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()
@@ -1188,28 +1207,28 @@ void wxThread::SetPriority(unsigned int prio)
 
 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
 {
-    wxCriticalSectionLocker lock((wxCriticalSection &)m_critsect); // const_cast
+    wxCriticalSectionLocker lock(const_cast<wxCriticalSection &>(m_critsect));
 
     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
 {
-    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);
@@ -1217,14 +1236,14 @@ bool wxThread::IsAlive() 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()
 {
-    wxCriticalSectionLocker lock((wxCriticalSection &)m_critsect); // const_cast
+    wxCriticalSectionLocker lock(const_cast<wxCriticalSection &>(m_critsect));
 
     return m_internal->GetState() == STATE_CANCELED;
 }
@@ -1266,7 +1285,7 @@ bool wxThreadModule::OnInit()
         ::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;
     }
@@ -1278,8 +1297,7 @@ bool wxThreadModule::OnInit()
 
     gs_critsectThreadDelete = new wxCriticalSection;
 
-    // no error return for GetCurrentThreadId()
-    gs_idMainThread = ::GetCurrentThreadId();
+    wxThread::ms_idMainThread = wxThread::GetCurrentId();
 
     return true;
 }
@@ -1291,18 +1309,15 @@ void wxThreadModule::OnExit()
         wxLogLastError(wxT("TlsFree failed."));
     }
 
-    delete gs_critsectThreadDelete;
-    gs_critsectThreadDelete = NULL;
+    wxDELETE(gs_critsectThreadDelete);
 
     if ( gs_critsectGui )
     {
         gs_critsectGui->Leave();
-        delete gs_critsectGui;
-        gs_critsectGui = NULL;
+        wxDELETE(gs_critsectGui);
     }
 
-    delete gs_critsectWaitingForGui;
-    gs_critsectWaitingForGui = NULL;
+    wxDELETE(gs_critsectWaitingForGui);
 }
 
 // ----------------------------------------------------------------------------
@@ -1393,7 +1408,7 @@ bool WXDLLIMPEXP_BASE wxGuiOwnedByMainThread()
 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)"));