don't overwrite the existing local file if we failed to open it but it does exist

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

diff --git a/src/msw/thread.cpp b/src/msw/thread.cpp
index 60536949096c41f51992490c9c38b4620a6b714e..6b835a97073906ab56c0a5220c3a8def05a8b407 100644 (file)
--- a/src/msw/thread.cpp
+++ b/src/msw/thread.cpp
@@ -21,13 +21,16 @@
     #pragma hdrstop
 #endif
 
+#if wxUSE_THREADS
+
+#include "wx/thread.h"
+
 #ifndef WX_PRECOMP
     #include "wx/intl.h"
     #include "wx/app.h"
+    #include "wx/module.h"
 #endif
 
-#if wxUSE_THREADS
-
 #include "wx/apptrait.h"
 #include "wx/scopeguard.h"
 
@@ -36,8 +39,6 @@
 #include "wx/msw/seh.h"
 
 #include "wx/except.h"
-#include "wx/module.h"
-#include "wx/thread.h"
 
 // must have this symbol defined to get _beginthread/_endthread declarations
 #ifndef _MT
@@ -177,7 +178,8 @@ public:
     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:
@@ -195,7 +197,7 @@ wxMutexInternal::wxMutexInternal(wxMutexType WXUNUSED(mutexType))
     m_mutex = ::CreateMutex
                 (
                     NULL,       // default secutiry attributes
-                    false,      // not initially locked
+                    FALSE,      // not initially locked
                     NULL        // no name
                 );
 
@@ -216,6 +218,14 @@ wxMutexInternal::~wxMutexInternal()
     }
 }
 
+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)
 {
     DWORD rc = ::WaitForSingleObject(m_mutex, milliseconds);
@@ -236,7 +246,7 @@ wxMutexError wxMutexInternal::LockTimeout(DWORD milliseconds)
             break;
 
         case WAIT_TIMEOUT:
-            return wxMUTEX_BUSY;
+            return wxMUTEX_TIMEOUT;
 
         case WAIT_ABANDONED:        // checked for above
         default:
@@ -354,14 +364,22 @@ wxSemaError wxSemaphoreInternal::Post()
 {
 #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(_T("ReleaseSemaphore"));
+            return wxSEMA_MISC_ERROR;
+        }
     }
 
     return wxSEMA_NO_ERROR;
+#else
+    return wxSEMA_MISC_ERROR;
+#endif
 }
 
 // ----------------------------------------------------------------------------
@@ -743,18 +761,16 @@ 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);
+        }
+        else // can't wait for the thread
+        {
+            // so kill it below
+            result = 0xFFFFFFFF;
+        }
 
         switch ( result )
         {
@@ -779,9 +795,6 @@ wxThreadInternal::WaitForTerminate(wxCriticalSection& cs,
                 //     the system might dead lock then
                 if ( wxThread::IsMain() )
                 {
-                    wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits()
-                                                   : NULL;
-
                     if ( traits && !traits->DoMessageFromThreadWait() )
                     {
                         // WM_QUIT received: kill the thread
@@ -983,7 +996,7 @@ 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
 
-    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;
@@ -1381,4 +1394,3 @@ bool WXDLLIMPEXP_BASE wxIsWaitingForThread()
 #include "wx/thrimpl.cpp"
 
 #endif // wxUSE_THREADS
-