// Created: 04.06.02 (extracted from src/*/thread.cpp files)
// RCS-ID: $Id$
// Copyright: (c) Vadim Zeitlin (2002)
-// Licence: wxWidgets licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// this file is supposed to be included only by the various thread.cpp
// wxConditionInternal
// --------------------------------------------------------------------------
-#if defined(__WXMSW__) || defined(__WXPM__) || defined(__EMX__)
// Win32 and OS/2 don't have explicit support for the POSIX condition
// variables and their events/event semaphores have quite different semantics,
// so we reimplement the conditions from scratch using the mutexes and
// semaphores
-#if defined(__WXPM__) || defined(__EMX__)
-void InterlockedIncrement(LONG *num)
-{
- ::DosEnterCritSec();
- (*num)++;
- ::DosExitCritSec();
-}
-#endif
+#if defined(__WXMSW__) || defined(__OS2__) || defined(__EMX__)
class wxConditionInternal
{
wxCondError wxConditionInternal::Wait()
{
// increment the number of waiters
- ::InterlockedIncrement(&m_numWaiters);
+ {
+ wxCriticalSectionLocker lock(m_csWaiters);
+ m_numWaiters++;
+ }
m_mutex.Unlock();
wxSemaError err = m_semaphore.Wait();
m_mutex.Lock();
- return err == wxSEMA_NO_ERROR ? wxCOND_NO_ERROR : wxCOND_MISC_ERROR;
+ if ( err == wxSEMA_NO_ERROR )
+ return wxCOND_NO_ERROR;
+ else if ( err == wxSEMA_TIMEOUT )
+ return wxCOND_TIMEOUT;
+ else
+ return wxCOND_MISC_ERROR;
}
wxCondError wxConditionInternal::WaitTimeout(unsigned long milliseconds)
{
- ::InterlockedIncrement(&m_numWaiters);
+ {
+ wxCriticalSectionLocker lock(m_csWaiters);
+ m_numWaiters++;
+ }
m_mutex.Unlock();
wxSemaError err = m_semaphore.WaitTimeout(milliseconds);
- if ( err == wxSEMA_BUSY )
+ if ( err == wxSEMA_TIMEOUT )
{
// another potential race condition exists here it is caused when a
// 'waiting' thread timesout, and returns from WaitForSingleObject, but
m_mutex.Lock();
- return err == wxSEMA_NO_ERROR ? wxCOND_NO_ERROR : wxCOND_MISC_ERROR;
+ return err == wxSEMA_NO_ERROR ? wxCOND_NO_ERROR
+ : err == wxSEMA_TIMEOUT ? wxCOND_TIMEOUT
+ : wxCOND_MISC_ERROR;
}
wxCondError wxConditionInternal::Signal()
return wxCOND_NO_ERROR;
}
-#endif
+
+#endif // MSW or OS2
// ----------------------------------------------------------------------------
// wxCondition