// Created: 04/13/98
// RCS-ID: $Id$
// Copyright: (c) Guilhem Lavaux
-// Licence: wxWidgets licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_THREAD_H_
#if wxUSE_THREADS
-// only for wxUSE_THREADS - otherwise we'd get undefined symbols
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma interface "thread.h"
-#endif
-
// Windows headers define it
#ifdef Yield
#undef Yield
wxMUTEX_DEAD_LOCK, // mutex is already locked by the calling thread
wxMUTEX_BUSY, // mutex is already locked by another thread
wxMUTEX_UNLOCKED, // attempt to unlock a mutex which is not locked
+ wxMUTEX_TIMEOUT, // LockTimeout() has timed out
wxMUTEX_MISC_ERROR // any other error
};
// The caller must call Unlock() later if Lock() returned wxMUTEX_NO_ERROR.
wxMutexError Lock();
+ // Same as Lock() but return wxMUTEX_TIMEOUT if the mutex can't be locked
+ // during the given number of milliseconds
+ wxMutexError LockTimeout(unsigned long ms);
+
// Try to lock the mutex: if it is currently locked, return immediately
// with an error. Otherwise the caller must call Unlock().
wxMutexError TryLock();
// in order to avoid any overhead under platforms where critical sections are
// just mutexes make all wxCriticalSection class functions inline
-#if !defined(__WXMSW__)
+#if !defined(__WXMSW__) && !defined(__WXMAC__)
#define wxCRITSECT_IS_MUTEX 1
#define wxCRITSECT_INLINE inline
wxCritSectBuffer m_buffer;
};
+#elif defined(__WXMAC__)
+ void *m_critRegion ;
#endif // Unix&OS2/Win32
DECLARE_NO_COPY_CLASS(wxCriticalSection)
#undef wxCRITSECT_IS_MUTEX
// wxCriticalSectionLocker is the same to critical sections as wxMutexLocker is
-// to th mutexes
+// to mutexes
class WXDLLIMPEXP_BASE wxCriticalSectionLocker
{
public:
bool IsOk() const;
// NB: the associated mutex MUST be locked beforehand by the calling thread
- //
+ //
// it atomically releases the lock on the associated mutex
// and starts waiting to be woken up by a Signal()/Broadcast()
// once its signaled, then it will wait until it can reacquire
wxCondError Wait();
// exactly as Wait() except that it may also return if the specified
- // timeout ellapses even if the condition hasn't been signalled: in this
+ // timeout elapses even if the condition hasn't been signalled: in this
// case, the return value is false, otherwise (i.e. in case of a normal
// return) it is true
- //
- // the timeeout parameter specifies a interval that needs to be waited in
- // milliseconds
+ //
+ // the timeout parameter specifies an interval that needs to be waited for
+ // in milliseconds
wxCondError WaitTimeout(unsigned long milliseconds);
// NB: the associated mutex may or may not be locked by the calling thread
//
// this method unblocks one thread if any are blocking on the condition.
// if no thread is blocking in Wait(), then the signal is NOT remembered
- // The thread which was blocking on Wait(), will then reacquire the lock
+ // The thread which was blocking on Wait() will then reacquire the lock
// on the associated mutex object before returning
wxCondError Signal();
//
// this method unblocks all threads if any are blocking on the condition.
// if no thread is blocking in Wait(), then the signal is NOT remembered
- // The threads which were blocking on Wait(), will then reacquire the lock
+ // The threads which were blocking on Wait() will then reacquire the lock
// on the associated mutex object before returning.
wxCondError Broadcast();
+#if WXWIN_COMPATIBILITY_2_6
// deprecated version, don't use
- bool Wait(unsigned long milliseconds)
- { return WaitTimeout(milliseconds) == wxCOND_NO_ERROR; }
+ wxDEPRECATED( bool Wait(unsigned long milliseconds) );
+#endif // WXWIN_COMPATIBILITY_2_6
private:
wxConditionInternal *m_internal;
DECLARE_NO_COPY_CLASS(wxCondition)
};
+#if WXWIN_COMPATIBILITY_2_6
+ inline bool wxCondition::Wait(unsigned long milliseconds)
+ { return WaitTimeout(milliseconds) == wxCOND_NO_ERROR; }
+#endif // WXWIN_COMPATIBILITY_2_6
+
// ----------------------------------------------------------------------------
// wxSemaphore: a counter limiting the number of threads concurrently accessing
// a shared resource
wxSemaError TryWait();
// same as Wait(), but as a timeout limit, returns wxSEMA_NO_ERROR if the
- // semaphore was acquired and wxSEMA_TIMEOUT if the timeout has ellapsed
+ // semaphore was acquired and wxSEMA_TIMEOUT if the timeout has elapsed
wxSemaError WaitTimeout(unsigned long milliseconds);
// increments the semaphore count and signals one of the waiting threads
};
// ----------------------------------------------------------------------------
-// wxThread: class encpasulating a thread of execution
+// wxThread: class encapsulating a thread of execution
// ----------------------------------------------------------------------------
// there are two different kinds of threads: joinable and detached (default)
// Returns true if current thread is the main thread.
static bool IsMain();
- // Release the rest of our time slice leting the other threads run
+ // Release the rest of our time slice letting the other threads run
static void Yield();
// Sleep during the specified period of time in milliseconds
ExitCode Wait();
// kills the thread without giving it any chance to clean up - should
- // not be used in normal circumstances, use Delete() instead. It is a
- // dangerous function that should only be used in the most extreme
- // cases!
+ // not be used under normal circumstances, use Delete() instead.
+ // It is a dangerous function that should only be used in the most
+ // extreme cases!
//
// The wxThread object is deleted by Kill() if the thread is
// detachable, but you still have to delete it manually for joinable
#if wxUSE_THREADS
-#if defined(__WXMSW__) || defined(__WXMAC__) || defined(__WXPM__) || defined(__EMX__)
+#if defined(__WXMSW__) || defined(__WXMAC__) || defined(__OS2__) || defined(__EMX__)
// unlock GUI if there are threads waiting for and lock it back when
// there are no more of them - should be called periodically by the main
// thread
// returns true if the main thread has GUI lock
extern bool WXDLLIMPEXP_BASE wxGuiOwnedByMainThread();
-#ifndef __WXPM__
// wakes up the main thread if it's sleeping inside ::GetMessage()
extern void WXDLLIMPEXP_BASE wxWakeUpMainThread();
-#endif // !OS/2
// return true if the main thread is waiting for some other to terminate:
// wxApp then should block all "dangerous" messages
#endif // wxUSE_THREADS
#endif // _WX_THREAD_H_
-
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