X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3f49efdba9f219752121353c9430aabb6d679cf0..c084a1ac064cff672b777e1e6a3624fd838387e7:/src/msw/thread.cpp

diff --git a/src/msw/thread.cpp b/src/msw/thread.cpp
index 942a0379da..2a692e374d 100644
--- a/src/msw/thread.cpp
+++ b/src/msw/thread.cpp
@@ -75,8 +75,9 @@
     // this is where _beginthreadex() is declared
     #include <process.h>
 
-    // the return type of the thread function entry point
-    typedef wxUIntPtr THREAD_RETVAL;
+    // 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
     #define THREAD_CALLCONV __stdcall
@@ -144,7 +145,7 @@ static bool gs_waitingForThread = false;
 // wxCriticalSection
 // ----------------------------------------------------------------------------
 
-wxCriticalSection::wxCriticalSection()
+wxCriticalSection::wxCriticalSection( wxCriticalSectionType WXUNUSED(critSecType) )
 {
     wxCOMPILE_TIME_ASSERT( sizeof(CRITICAL_SECTION) <= sizeof(wxCritSectBuffer),
                            wxCriticalSectionBufferTooSmall );
@@ -189,11 +190,14 @@ private:
 
     HANDLE m_mutex;
 
+    unsigned long m_owningThread;
+    wxMutexType m_type;
+
     DECLARE_NO_COPY_CLASS(wxMutexInternal)
 };
 
 // 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
@@ -203,10 +207,14 @@ wxMutexInternal::wxMutexInternal(wxMutexType WXUNUSED(mutexType))
                     NULL        // no name
                 );
 
+    m_type = mutexType;
+    m_owningThread = 0;
+
     if ( !m_mutex )
     {
         wxLogLastError(_T("CreateMutex()"));
     }
+
 }
 
 wxMutexInternal::~wxMutexInternal()
@@ -230,19 +238,25 @@ wxMutexError wxMutexInternal::TryLock()
 
 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 )
     {
+        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"));
+            // fall through
+
         case WAIT_OBJECT_0:
             // ok
             break;
@@ -250,7 +264,6 @@ wxMutexError wxMutexInternal::LockTimeout(DWORD milliseconds)
         case WAIT_TIMEOUT:
             return wxMUTEX_TIMEOUT;
 
-        case WAIT_ABANDONED:        // checked for above
         default:
             wxFAIL_MSG(wxT("impossible return value in wxMutex::Lock"));
             // fall through
@@ -260,11 +273,20 @@ wxMutexError wxMutexInternal::LockTimeout(DWORD milliseconds)
             return wxMUTEX_MISC_ERROR;
     }
 
+    if (m_type == wxMUTEX_DEFAULT)
+    {
+        // required for checking recursiveness
+        m_owningThread = wxThread::GetCurrentId();
+    }
+
     return wxMUTEX_NO_ERROR;
 }
 
 wxMutexError wxMutexInternal::Unlock()
 {
+    // required for checking recursiveness
+    m_owningThread = 0;
+
     if ( !::ReleaseMutex(m_mutex) )
     {
         wxLogLastError(_T("ReleaseMutex()"));
@@ -528,7 +550,7 @@ THREAD_RETVAL wxThreadInternal::DoThreadStart(wxThread *thread)
             return THREAD_ERROR_EXIT;
         }
 
-        rc = (THREAD_RETVAL)thread->Entry();
+        rc = wxPtrToUInt(thread->Entry());
     }
     wxCATCH_ALL( wxTheApp->OnUnhandledException(); )
 
@@ -916,11 +938,6 @@ void wxThread::Yield()
     ::Sleep(0);
 }
 
-void wxThread::Sleep(unsigned long milliseconds)
-{
-    ::Sleep(milliseconds);
-}
-
 int wxThread::GetCPUCount()
 {
     SYSTEM_INFO si;
@@ -1097,7 +1114,7 @@ wxThreadError wxThread::Resume()
 
 wxThread::ExitCode wxThread::Wait()
 {
-    ExitCode rc = (ExitCode)THREAD_ERROR_EXIT;
+    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