/* * $Id$ */ /* * Harbour Project source code: * MT mode functions * * Copyright 2008 Przemyslaw Czerpak * www - http://www.harbour-project.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this software; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/). * * As a special exception, the Harbour Project gives permission for * additional uses of the text contained in its release of Harbour. * * The exception is that, if you link the Harbour libraries with other * files to produce an executable, this does not by itself cause the * resulting executable to be covered by the GNU General Public License. * Your use of that executable is in no way restricted on account of * linking the Harbour library code into it. * * This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU General Public License. * * This exception applies only to the code released by the Harbour * Project under the name Harbour. If you copy code from other * Harbour Project or Free Software Foundation releases into a copy of * Harbour, as the General Public License permits, the exception does * not apply to the code that you add in this way. To avoid misleading * anyone as to the status of such modified files, you must delete * this exception notice from them. * * If you write modifications of your own for Harbour, it is your choice * whether to permit this exception to apply to your modifications. * If you do not wish that, delete this exception notice. * */ /* Harbour level API: hb_threadStart( [ ,] <@sStart()> | | [, ] ) -> hb_threadSelf() -> | NIL hb_threadId( [ ] ) -> hb_threadJoin( [, @ ] ) -> hb_threadDetach( ) -> * hb_threadQuitRequest( ) -> hb_threadTerminateAll() -> NIL hb_threadWaitForAll() -> NIL hb_threadWait( | , [ ] [, ] ) => | | 0 hb_threadOnce( @ [, ] ) -> hb_mutexCreate() -> hb_mutexLock( [, ] ) -> hb_mutexUnlock( ) -> hb_mutexNotify( [, ] ) -> NIL hb_mutexNotifyAll( [, ] ) -> NIL hb_mutexSubscribe( , [ ] [, @ ] ) -> hb_mutexSubscribeNow( , [ ] [, @ ] ) -> * - this function call can be ignored by the destination thread in some cases. HVM does not guaranties that the QUIT signal will be always delivered. */ #define HB_OS_WIN_USED #define INCL_DOSSEMAPHORES #define INCL_DOSPROCESS #define _HB_THREAD_INTERNAL_ #include "hbvmopt.h" #include "hbthread.h" #include "hbatomic.h" #include "hbapiitm.h" #include "hbapierr.h" #include "hbapicdp.h" #include "hbapilng.h" #include "hbvm.h" #include "hbstack.h" #include "hbdate.h" #include "hbmemvar.ch" #include "hbthread.ch" #if defined( HB_PTHREAD_API ) # include # include #endif #if defined( HB_OS_UNIX ) # include # include # include #endif static volatile BOOL s_fThreadInit = FALSE; static PHB_ITEM s_pOnceMutex = NULL; #if !defined( HB_MT_VM ) /* nothing */ #else static int s_waiting_for_threads = 0; # if defined( HB_PTHREAD_API ) static void hb_threadTimeInit( struct timespec * ts, ULONG ulMilliSec ) { # if _POSIX_C_SOURCE >= 199309L clock_gettime( CLOCK_REALTIME, ts ); # else struct timeval tv; gettimeofday( &tv, NULL ); ts->tv_sec = tv.tv_sec; ts->tv_nsec = tv.tv_usec * 1000l; # endif ts->tv_nsec += ( ulMilliSec % 1000 ) * 1000000l; ts->tv_sec += ulMilliSec / 1000 + ts->tv_nsec / 1000000000l; ts->tv_nsec %= 1000000000l; } # endif # if defined( HB_CRITICAL_NEED_INIT ) static HB_RAWCRITICAL_T s_init_mtx; static HB_RAWCRITICAL_T s_once_mtx; static HB_RAWCRITICAL_T s_thread_mtx; static HB_RAWCRITICAL_T s_mutexlst_mtx; static void hb_threadCriticalInit( HB_CRITICAL_T * critical ) { if( !s_fThreadInit ) hb_threadInit(); HB_CRITICAL_LOCK( s_init_mtx ); if( !critical->fInit ) { HB_CRITICAL_INIT( critical->critical ); critical->fInit = TRUE; } HB_CRITICAL_UNLOCK( s_init_mtx ); } # else # if defined( HB_COND_NEED_INIT ) static HB_CRITICAL_NEW( s_init_mtx ); # endif static HB_CRITICAL_NEW( s_once_mtx ); static HB_CRITICAL_NEW( s_thread_mtx ); static HB_CRITICAL_NEW( s_mutexlst_mtx ); # endif # if defined( HB_COND_NEED_INIT ) static HB_RAWCOND_T s_thread_cond; static void hb_threadCondInit( HB_COND_T * cond ) { if( !s_fThreadInit ) hb_threadInit(); HB_CRITICAL_LOCK( s_init_mtx ); if( !cond->fInit ) { HB_COND_INIT( cond->cond ); # if !defined( HB_COND_OS_SUPPORT ) HB_CRITICAL_INIT( cond->critical ); cond->waiters = 0; # endif cond->fInit = TRUE; } HB_CRITICAL_UNLOCK( s_init_mtx ); } # else static HB_COND_NEW( s_thread_cond ); # endif #endif /* HB_MT_VM */ void hb_threadInit( void ) { if( !s_fThreadInit ) { #if !defined( HB_MT_VM ) /* nothing to do */ #else # if defined( HB_CRITICAL_NEED_INIT ) HB_CRITICAL_INIT( s_init_mtx ); HB_CRITICAL_INIT( s_once_mtx ); HB_CRITICAL_INIT( s_thread_mtx ); HB_CRITICAL_INIT( s_mutexlst_mtx ); # endif # if defined( HB_COND_NEED_INIT ) HB_COND_INIT( s_thread_cond ); # endif #if defined( HB_TASK_THREAD ) hb_taskInit(); # endif #endif s_fThreadInit = TRUE; } } void hb_threadExit( void ) { if( s_pOnceMutex ) { hb_itemRelease( s_pOnceMutex ); s_pOnceMutex = NULL; } #if defined( HB_TASK_THREAD ) && defined( HB_MT_VM ) hb_taskExit(); #endif } void hb_threadReleaseCPU( void ) { /* * The following code is modified: * hb_releaseCPU() * originally created by: * Copyright 1999 David G. Holm * and then updated by few Harbour developers */ HB_TRACE(HB_TR_DEBUG, ("hb_threadReleaseCPU()")); hb_vmUnlock(); /* TODO: Add code to release time slices on all platforms */ #if defined( HB_TASK_THREAD ) && defined( HB_MT_VM ) hb_taskSleep( 20 ); #elif defined( HB_OS_WIN ) || defined( __CYGWIN__ ) /* Forfeit the remainder of the current time slice. */ Sleep( 20 ); #elif defined( HB_OS_OS2 ) /* 23/nov/2000 - maurilio.longo@libero.it Minimum time slice under OS/2 is 32 milliseconds, passed 1 will be rounded to 32 and will give a chance to threads of lower priority to get executed. Passing 0 causes current thread to give up its time slice only if there are threads of equal priority waiting to be dispatched. Note: certain versions of OS/2 kernel have a bug which causes DosSleep(0) not to work as expected. */ DosSleep( 1 ); /* Duration is in milliseconds */ #elif defined( HB_OS_DOS ) /* NOTE: there is a bug under NT 4 and 2000 - if the app is running in protected mode, time slices will _not_ be released - you must switch to real mode first, execute the following, and switch back. It just occurred to me that this is actually by design. Since MS doesn't want you to do this from a console app, their solution was to not allow the call to work in protected mode - screw the rest of the planet . returns zero on failure. (means not supported) */ { union REGS regs; regs.h.ah = 2; regs.HB_XREGS.ax = 0x1680; HB_DOS_INT86( 0x2F, ®s, ®s ); } #elif defined( HB_OS_UNIX ) { struct timeval tv; tv.tv_sec = 0; tv.tv_usec = 1000; select( 0, NULL, NULL, NULL, &tv ); } /* the code below is simpler but seems that some Linux kernels * (f.e. from Centos 5.1) have problems with nanosleep() * so it was replaced by above code */ /* { static const struct timespec nanosecs = { 0, 1000000 }; nanosleep( &nanosecs, NULL ); } */ #else /* Do nothing */ #endif hb_vmLock(); } #if defined( HB_MT_VM ) && defined( HB_COND_HARBOUR_SUPPORT ) static PHB_WAIT_LIST _hb_thread_wait_list( void ) { PHB_THREADSTATE pThread = ( PHB_THREADSTATE ) hb_vmThreadState(); if( pThread ) return &pThread->pWaitList; else return NULL; } static void _hb_thread_wait_add( HB_COND_T * cond, PHB_WAIT_LIST pWaiting ) { #if defined( HB_OS_OS2 ) ULONG ulPostCount = 0; DosResetEventSem( pWaiting->cond, &ulPostCount ); #elif defined( HB_OS_WIN ) /* It's not necessary because we have workaround for possible race * condition inside _hb_thread_cond_wait() function */ /* WaitForSingleObject( pWaiting->cond, 0 ); */ #endif pWaiting->signaled = FALSE; if( cond->waiters == NULL ) { cond->waiters = pWaiting->next = pWaiting->prev = pWaiting; } else { pWaiting->next = cond->waiters; pWaiting->prev = cond->waiters->prev; cond->waiters->prev = pWaiting->prev->next = pWaiting; } } static void _hb_thread_wait_del( HB_COND_T * cond, PHB_WAIT_LIST pWaiting ) { pWaiting->next->prev = pWaiting->prev; pWaiting->prev->next = pWaiting->next; if( pWaiting == cond->waiters ) { cond->waiters = pWaiting->next; if( pWaiting == cond->waiters ) cond->waiters = NULL; } } static BOOL _hb_thread_cond_signal( HB_COND_T * cond ) { if( cond->waiters ) { PHB_WAIT_LIST pWaiting = cond->waiters; do { if( !pWaiting->signaled ) { #if defined( HB_OS_OS2 ) DosPostEventSem( pWaiting->cond ); #elif defined( HB_OS_WIN ) ReleaseSemaphore( pWaiting->cond, 1, NULL ); #endif pWaiting->signaled = TRUE; /* signal only single thread */ break; } pWaiting = pWaiting->next; } while( pWaiting != cond->waiters ); } return TRUE; } static BOOL _hb_thread_cond_broadcast( HB_COND_T * cond ) { if( cond->waiters ) { PHB_WAIT_LIST pWaiting = cond->waiters; do { if( !pWaiting->signaled ) { #if defined( HB_OS_OS2 ) DosPostEventSem( pWaiting->cond ); #elif defined( HB_OS_WIN ) ReleaseSemaphore( pWaiting->cond, 1, NULL ); #endif pWaiting->signaled = TRUE; } pWaiting = pWaiting->next; } while( pWaiting != cond->waiters ); } return TRUE; } static BOOL _hb_thread_cond_wait( HB_COND_T * cond, HB_RAWCRITICAL_T * critical, ULONG ulMillisec ) { PHB_WAIT_LIST pWaiting = _hb_thread_wait_list(); BOOL fResult = FALSE; if( pWaiting ) { _hb_thread_wait_add( cond, pWaiting ); #if defined( HB_OS_OS2 ) DosReleaseMutexSem( *critical ); fResult = DosWaitEventSem( pWaiting->cond, ulMillisec ) == NO_ERROR; DosRequestMutexSem( *critical, SEM_INDEFINITE_WAIT ); #elif defined( HB_OS_WIN ) LeaveCriticalSection( critical ); fResult = WaitForSingleObject( pWaiting->cond, ulMillisec ) == WAIT_OBJECT_0; EnterCriticalSection( critical ); /* workaround for race condition */ if( !fResult && pWaiting->signaled ) fResult = WaitForSingleObject( pWaiting->cond, 0 ) == WAIT_OBJECT_0; #endif _hb_thread_wait_del( cond, pWaiting ); } return fResult; } #endif #if defined( HB_OS_OS2 ) && !defined( __GNUC__ ) ULONG _hb_gettid( void ) { ULONG tid = 0; PTIB ptib = NULL; if( DosGetInfoBlocks( &ptib, NULL ) == NO_ERROR ) tid = ptib->tib_ptib2->tib2_ultid; return tid; } #endif /* * atomic increment/decrement operations */ #if !defined( HB_MT_VM ) void hb_atomic_set( volatile HB_COUNTER * pCounter, HB_COUNTER value ) { *pCounter = value; } HB_COUNTER hb_atomic_get( volatile HB_COUNTER * pCounter ) { return *pCounter; } void hb_atomic_inc( volatile HB_COUNTER * pCounter ) { ++( *pCounter ); } BOOL hb_atomic_dec( volatile HB_COUNTER * pCounter ) { return --( *pCounter ) == 0; } #elif defined( HB_ATOM_INC ) && defined( HB_ATOM_DEC ) && \ defined( HB_ATOM_GET ) && defined( HB_ATOM_SET ) void hb_atomic_set( volatile HB_COUNTER * pCounter, HB_COUNTER value ) { HB_ATOM_SET( pCounter, value ); } HB_COUNTER hb_atomic_get( volatile HB_COUNTER * pCounter ) { return HB_ATOM_GET( pCounter ); } void hb_atomic_inc( volatile HB_COUNTER * pCounter ) { HB_ATOM_INC( pCounter ); } BOOL hb_atomic_dec( volatile HB_COUNTER * pCounter ) { return HB_ATOM_DEC( pCounter ) == 0; } #else static HB_CRITICAL_NEW( s_atomicMtx ); void hb_atomic_set( volatile HB_COUNTER * pCounter, HB_COUNTER value ) { /* NOTE: on some platforms it may be necessary to protect this * by cirtical section, f.e. when HB_COUNTER cannot be accessed * using single memory access by CPU. */ *pCounter = value; } HB_COUNTER hb_atomic_get( volatile HB_COUNTER * pCounter ) { /* NOTE: on some platforms it may be necessary to protect this * by cirtical section, f.e. when HB_COUNTER cannot be accessed * using single memory access by CPU. */ return *pCounter; } void hb_atomic_inc( volatile HB_COUNTER * pCounter ) { hb_threadEnterCriticalSection( &s_atomicMtx ); ++( *pCounter ); hb_threadLeaveCriticalSection( &s_atomicMtx ); } BOOL hb_atomic_dec( volatile HB_COUNTER * pCounter ) { BOOL fResult; hb_threadEnterCriticalSection( &s_atomicMtx ); fResult = --( *pCounter ) == 0; hb_threadLeaveCriticalSection( &s_atomicMtx ); return fResult; } #endif void hb_threadEnterCriticalSection( HB_CRITICAL_T * critical ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( critical ); #elif defined( HB_CRITICAL_NEED_INIT ) if( !critical->fInit ) hb_threadCriticalInit( critical ); HB_CRITICAL_LOCK( critical->critical ); #else HB_CRITICAL_LOCK( *critical ); #endif } void hb_threadLeaveCriticalSection( HB_CRITICAL_T * critical ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( critical ); #elif defined( HB_CRITICAL_NEED_INIT ) HB_CRITICAL_UNLOCK( critical->critical ); #else HB_CRITICAL_UNLOCK( *critical ); #endif } BOOL hb_threadCondSignal( HB_COND_T * cond ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( cond ); return FALSE; #elif defined( HB_TASK_THREAD ) HB_COND_SIGNAL( *cond ); return TRUE; #elif defined( HB_PTHREAD_API ) # if defined( HB_COND_NEED_INIT ) if( !cond->fInit ) hb_threadCondInit( cond ); # endif return pthread_cond_signal( HB_COND_GET( cond ) ) == 0; #elif defined( HB_COND_HARBOUR_SUPPORT ) return _hb_thread_cond_signal( cond ); #else if( !cond->fInit ) hb_threadCondInit( cond ); HB_CRITICAL_LOCK( cond->critical ); if( cond->waiters ) { HB_COND_SIGNAL( cond->cond ); cond->waiters--; } HB_CRITICAL_UNLOCK( cond->critical ); return TRUE; #endif } BOOL hb_threadCondBroadcast( HB_COND_T * cond ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( cond ); return FALSE; #elif defined( HB_TASK_THREAD ) HB_COND_SIGNALN( *cond, 0 ); return TRUE; #elif defined( HB_PTHREAD_API ) # if defined( HB_COND_NEED_INIT ) if( !cond->fInit ) hb_threadCondInit( cond ); # endif return pthread_cond_broadcast( HB_COND_GET( cond ) ) == 0; #elif defined( HB_COND_HARBOUR_SUPPORT ) return _hb_thread_cond_broadcast( cond ); #else if( !cond->fInit ) hb_threadCondInit( cond ); HB_CRITICAL_LOCK( cond->critical ); if( cond->waiters ) { HB_COND_SIGNALN( cond->cond, cond->waiters ); cond->waiters = 0; } HB_CRITICAL_UNLOCK( cond->critical ); return TRUE; #endif } BOOL hb_threadCondWait( HB_COND_T * cond, HB_CRITICAL_T * mutex ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( cond ); HB_SYMBOL_UNUSED( mutex ); return FALSE; #elif defined( HB_TASK_THREAD ) return HB_COND_WAIT( cond, mutex ) != 0; #elif defined( HB_PTHREAD_API ) # if defined( HB_COND_NEED_INIT ) if( !cond->fInit ) hb_threadCondInit( cond ); # endif return pthread_cond_wait( HB_COND_GET( cond ), HB_CRITICAL_GET( mutex ) ) == 0; #elif defined( HB_COND_HARBOUR_SUPPORT ) return _hb_thread_cond_wait( cond, &mutex->critical, HB_THREAD_INFINITE_WAIT ); #else BOOL fResult; if( !cond->fInit ) hb_threadCondInit( cond ); /* mutex should be already locked so it's not necessary * to make initialization test here */ HB_CRITICAL_LOCK( cond->critical ); cond->waiters++; HB_CRITICAL_UNLOCK( cond->critical ); HB_CRITICAL_UNLOCK( mutex->critical ); fResult = HB_COND_WAIT( cond->cond ); HB_CRITICAL_LOCK( mutex->critical ); /* There is race condition here and user code should always check if * the wait condition is valid after leaving hb_threadCondWait() * even if it returns TRUE */ if( !fResult ) { HB_CRITICAL_LOCK( cond->critical ); cond->waiters--; HB_CRITICAL_UNLOCK( cond->critical ); } return fResult; #endif } BOOL hb_threadCondTimedWait( HB_COND_T * cond, HB_CRITICAL_T * mutex, ULONG ulMilliSec ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( cond ); HB_SYMBOL_UNUSED( mutex ); HB_SYMBOL_UNUSED( ulMilliSec ); return FALSE; #elif defined( HB_TASK_THREAD ) return HB_COND_TIMEDWAIT( cond, mutex, ulMilliSec ) != 0; #elif defined( HB_TASK_THREAD ) return HB_COND_WAIT( cond, mutex ) != 0; #elif defined( HB_PTHREAD_API ) struct timespec ts; # if defined( HB_COND_NEED_INIT ) if( !cond->fInit ) hb_threadCondInit( cond ); # endif hb_threadTimeInit( &ts, ulMilliSec ); return pthread_cond_timedwait( HB_COND_GET( cond ), HB_CRITICAL_GET( mutex ), &ts ) == 0; #elif defined( HB_COND_HARBOUR_SUPPORT ) return _hb_thread_cond_wait( cond, &mutex->critical, ulMilliSec ); #else BOOL fResult; if( !cond->fInit ) hb_threadCondInit( cond ); /* mutex should be already locked so it's not necessary * to make initialization test here */ HB_CRITICAL_LOCK( cond->critical ); cond->waiters++; HB_CRITICAL_UNLOCK( cond->critical ); HB_CRITICAL_UNLOCK( mutex->critical ); fResult = HB_COND_TIMEDWAIT( cond->cond, ulMilliSec ); HB_CRITICAL_LOCK( mutex->critical ); /* There is race condition here and user code should always check if * the wait condition is valid after leaving hb_threadCondTimedWait() * even if it returns TRUE */ if( !fResult ) { HB_CRITICAL_LOCK( cond->critical ); cond->waiters--; HB_CRITICAL_UNLOCK( cond->critical ); } return fResult; #endif } HB_THREAD_HANDLE hb_threadCreate( HB_THREAD_ID * th_id, PHB_THREAD_STARTFUNC start_func, void * Cargo ) { HB_THREAD_HANDLE th_h; #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( start_func ); HB_SYMBOL_UNUSED( Cargo ); *th_id = ( HB_THREAD_ID ) 0; th_h = ( HB_THREAD_HANDLE ) 0; #elif defined( HB_TASK_THREAD ) *th_id = hb_taskCreate( start_func, Cargo, 0 ); th_h = *th_id; #elif defined( HB_PTHREAD_API ) if( pthread_create( th_id, NULL, start_func, Cargo ) != 0 ) *th_id = ( HB_THREAD_ID ) 0; th_h = *th_id; #elif defined( HB_OS_WIN ) th_h = ( HANDLE ) _beginthreadex( NULL, 0, start_func, Cargo, 0, th_id ); if( !th_h ) *th_id = ( HB_THREAD_ID ) 0; #elif defined( HB_OS_OS2 ) *th_id = _beginthread( start_func, NULL, 128 * 1024, Cargo ); th_h = *th_id; #else { int TODO_MT; } *th_id = ( HB_THREAD_ID ) 0; th_h = ( HB_THREAD_HANDLE ) 0; #endif return th_h; } BOOL hb_threadJoin( HB_THREAD_HANDLE th_h ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( th_h ); return FALSE; #elif defined( HB_TASK_THREAD ) return hb_taskJoin( th_h, HB_TASK_INFINITE_WAIT, NULL ) != 0; #elif defined( HB_PTHREAD_API ) return pthread_join( th_h, NULL ) == 0; #elif defined( HB_OS_WIN ) if( WaitForSingleObject( th_h, INFINITE ) != WAIT_FAILED ) { CloseHandle( th_h ); return TRUE; } return FALSE; #elif defined( HB_OS_OS2 ) APIRET rc = DosWaitThread( &th_h, DCWW_WAIT ); /* TOFIX: ERROR_INVALID_THREADID is a hack for failing DosWaitThread() * when thread terminates before DosWaitThread() call. * OS2 users please check and fix this code if possible. */ return rc == NO_ERROR || rc == ERROR_INVALID_THREADID; #else { int TODO_MT; } return FALSE; #endif } BOOL hb_threadDetach( HB_THREAD_HANDLE th_h ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( th_h ); return FALSE; #elif defined( HB_TASK_THREAD ) hb_taskDetach( th_h ); return TRUE; #elif defined( HB_PTHREAD_API ) return pthread_detach( th_h ) == 0; #elif defined( HB_OS_WIN ) return CloseHandle( th_h ) != 0; #elif defined( HB_OS_OS2 ) APIRET rc = DosWaitThread( &th_h, DCWW_NOWAIT ); return rc == NO_ERROR || rc == ERROR_INVALID_THREADID; #else { int TODO_MT; } return FALSE; #endif } /* * .PRG level functions */ /* I. THREADS */ static HB_GARBAGE_FUNC( hb_threadDestructor ) { PHB_THREADSTATE pThread = ( PHB_THREADSTATE ) Cargo; if( pThread->pParams ) { hb_itemRelease( pThread->pParams ); pThread->pParams = NULL; } if( pThread->pMemvars ) { hb_itemRelease( pThread->pMemvars ); pThread->pMemvars = NULL; } if( pThread->pResult ) { hb_itemRelease( pThread->pResult ); pThread->pResult = NULL; } if( pThread->pI18N ) { hb_i18n_release( pThread->pI18N ); pThread->pI18N = NULL; } if( pThread->pSet ) { hb_setRelease( pThread->pSet ); hb_xfree( pThread->pSet ); pThread->pSet = NULL; } if( pThread->th_h != 0 ) { hb_threadDetach( pThread->th_h ); pThread->th_h = 0; } if( pThread->hGT ) { hb_gtRelease( pThread->hGT ); pThread->hGT = NULL; } #if defined( HB_COND_HARBOUR_SUPPORT ) if( pThread->pWaitList.cond ) { # if defined( HB_OS_OS2 ) DosCloseEventSem( pThread->pWaitList.cond ); pThread->pWaitList.cond = ( HEV ) 0; # elif defined( HB_OS_WIN ) CloseHandle( pThread->pWaitList.cond ); pThread->pWaitList.cond = ( HANDLE ) 0; # endif } #endif } static HB_THREAD_STARTFUNC( hb_threadStartVM ) { #if defined( HB_MT_VM ) PHB_ITEM pThItm = ( PHB_ITEM ) Cargo; ULONG ulPCount, ulParam; PHB_THREADSTATE pThread; BOOL fSend = FALSE; pThread = ( PHB_THREADSTATE ) hb_itemGetPtrGC( pThItm, hb_threadDestructor ); hb_vmThreadInit( ( void * ) pThread ); ulPCount = hb_arrayLen( pThread->pParams ); if( ulPCount > 0 ) { PHB_ITEM pStart = hb_arrayGetItemPtr( pThread->pParams, 1 ); if( HB_IS_BLOCK( pStart ) ) { hb_vmPushSymbol( &hb_symEval ); hb_vmPush( pStart ); fSend = TRUE; } else if( HB_IS_SYMBOL( pStart ) ) { hb_vmPush( pStart ); hb_vmPushNil(); } else if( HB_IS_STRING( pStart ) ) { hb_vmPushDynSym( hb_dynsymGet( hb_itemGetCPtr( pStart ) ) ); hb_vmPushNil(); } else ulPCount = 0; } if( ulPCount > 0 ) { for( ulParam = 2; ulParam <= ulPCount; ++ulParam ) hb_vmPush( hb_arrayGetItemPtr( pThread->pParams, ulParam ) ); hb_itemRelease( pThread->pParams ); pThread->pParams = NULL; if( fSend ) hb_vmSend( ( USHORT ) ( ulPCount - 1 ) ); else hb_vmProc( ( USHORT ) ( ulPCount - 1 ) ); } else { hb_itemRelease( pThread->pParams ); pThread->pParams = NULL; if( pThread->pMemvars ) { hb_itemRelease( pThread->pMemvars ); pThread->pMemvars = NULL; } hb_errRT_BASE_SubstR( EG_ARG, 3012, NULL, HB_ERR_FUNCNAME, 0 ); } /* hb_vmThreadQuit() unlocks and release HVM stack and may release * also pThItm item so we should not access any HVM items or * pThread structure after this function. */ hb_vmThreadQuit(); HB_CRITICAL_LOCK( s_thread_mtx ); if( s_waiting_for_threads ) { HB_COND_SIGNALN( s_thread_cond, s_waiting_for_threads ); s_waiting_for_threads = 0; } HB_CRITICAL_UNLOCK( s_thread_mtx ); HB_THREAD_END #else hb_itemRelease( ( PHB_ITEM ) Cargo ); HB_THREAD_RAWEND #endif } PHB_THREADSTATE hb_threadStateNew( void ) { PHB_ITEM pThItm; PHB_THREADSTATE pThread; pThItm = hb_itemNew( NULL ); pThread = ( PHB_THREADSTATE ) hb_gcAlloc( sizeof( HB_THREADSTATE ), hb_threadDestructor ); memset( pThread, 0, sizeof( HB_THREADSTATE ) ); hb_itemPutPtrGC( pThItm, pThread ); pThread->pszCDP = HB_MACRO2STRING( HB_CODEPAGE_DEFAULT ); pThread->pszLang = HB_MACRO2STRING( HB_LANG_DEFAULT ); pThread->pThItm = pThItm; pThread->hGT = hb_gtAlloc( NULL ); #if defined( HB_COND_HARBOUR_SUPPORT ) # if defined( HB_OS_OS2 ) DosCreateEventSem( NULL, &pThread->pWaitList.cond, 0L, FALSE ); # elif defined( HB_OS_WIN ) pThread->pWaitList.cond = CreateSemaphore( NULL, 0, 1, NULL ); # endif #endif return pThread; } static PHB_THREADSTATE hb_thParam( int iParam, int iPos ) { PHB_THREADSTATE pThread = ( PHB_THREADSTATE ) hb_parvptrGC( hb_threadDestructor, iParam, iPos ); if( pThread ) return pThread; hb_errRT_BASE_SubstR( EG_ARG, 3012, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); return NULL; } HB_FUNC( HB_THREADSTART ) { ULONG ulAttr = 0, ulStart = 1; const char * szFuncName = NULL; PHB_SYMB pSymbol = NULL; PHB_ITEM pStart; pStart = hb_param( ulStart, HB_IT_ANY ); while( pStart && HB_IS_NUMERIC( pStart ) ) { ulAttr |= ( ULONG ) hb_itemGetNL( pStart ); pStart = hb_param( ++ulStart, HB_IT_ANY ); } if( pStart ) { if( HB_IS_STRING( pStart ) ) { PHB_DYNS pDynSym; szFuncName = hb_itemGetCPtr( pStart ); pDynSym = hb_dynsymFindName( szFuncName ); if( pDynSym ) pSymbol = pDynSym->pSymbol; if( !pSymbol || !pSymbol->value.pFunPtr ) pStart = NULL; } else if( HB_IS_SYMBOL( pStart ) ) { pSymbol = hb_itemGetSymbol( pStart ); if( !pSymbol->value.pFunPtr ) { szFuncName = pSymbol->szName; pStart = NULL; } } else if( !HB_IS_BLOCK( pStart ) ) pStart = NULL; } if( pStart ) { HB_STACK_TLS_PRELOAD PHB_ITEM pReturn; PHB_THREADSTATE pThread; ULONG ulPCount, ulParam; pThread = hb_threadStateNew(); pReturn = pThread->pThItm; pThread->pszCDP = hb_cdpID(); pThread->pszLang = hb_langID(); pThread->pI18N = hb_i18n_alloc( hb_vmI18N() ); pThread->pszDefRDD = hb_stackRDD()->szDefaultRDD; pThread->pSet = hb_setClone( hb_stackSetStruct() ); pThread->pParams = hb_arrayBaseParams(); ulPCount = hb_arrayLen( pThread->pParams ); /* remove thread attributes */ if( ulStart > 1 ) { for( ulParam = 1; ulParam < ulStart; ++ulParam ) hb_arrayDel( pThread->pParams, 1 ); ulPCount -= ulStart - 1; hb_arraySize( pThread->pParams, ulPCount ); } if( HB_IS_STRING( pStart ) && pSymbol ) hb_itemPutSymbol( hb_arrayGetItemPtr( pThread->pParams, 1 ), pSymbol ); /* detach LOCAL variables passed by reference */ for( ulParam = 1; ulParam <= ulPCount; ++ulParam ) { PHB_ITEM pParam = hb_arrayGetItemPtr( pThread->pParams, ulParam ); if( HB_IS_BYREF( pParam ) ) { if( ulParam == 1 ) hb_itemCopy( pParam, hb_itemUnRef( pParam ) ); else hb_memvarDetachLocal( pParam ); } } if( ( ulAttr & HB_THREAD_INHERIT_MEMVARS ) != 0 ) { int iScope = 0; if( ( ulAttr & HB_THREAD_INHERIT_PUBLIC ) != 0 ) iScope |= HB_MV_PUBLIC; if( ( ulAttr & HB_THREAD_INHERIT_PRIVATE ) != 0 ) iScope |= HB_MV_PRIVATE; pThread->pMemvars = hb_memvarSaveInArray( iScope, ( ulAttr & HB_THREAD_MEMVARS_COPY ) != 0 ); } /* make copy of thread pointer item before we pass it to new thread * to avoid race condition */ hb_itemReturn( pReturn ); #if defined( HB_MT_VM ) if( hb_vmThreadRegister( ( void * ) pThread ) ) #endif pThread->th_h = hb_threadCreate( &pThread->th_id, hb_threadStartVM, ( void * ) pReturn ); if( !pThread->th_h ) { #if defined( HB_MT_VM ) hb_vmThreadRelease( pThread ); #else hb_itemRelease( pReturn ); #endif hb_ret(); } } else { if( szFuncName ) hb_errRT_BASE_SubstR( EG_NOFUNC, 1001, NULL, szFuncName, 0 ); else hb_errRT_BASE_SubstR( EG_ARG, 3012, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); } } HB_FUNC( HB_THREADSELF ) { #if defined( HB_MT_VM ) PHB_THREADSTATE pThread = ( PHB_THREADSTATE ) hb_vmThreadState(); /* It's possible that pThread will be NULL and this function will * return NIL. It may happen only in one case when this function is * executed by one of destructors of items stored in thread pointer * item (in practice it can be only thread return value) and parent * thread destroyed this thread pointer item. [druzus] */ if( pThread ) hb_itemReturn( pThread->pThItm ); #endif } HB_FUNC( HB_THREADID ) { #if defined( HB_MT_VM ) HB_STACK_TLS_PRELOAD PHB_THREADSTATE pThread; if( hb_pcount() > 0 ) { pThread = hb_thParam( 1, 0 ); if( pThread ) hb_retnint( pThread->th_no ); } else { pThread = ( PHB_THREADSTATE ) hb_vmThreadState(); if( pThread ) hb_retnint( pThread->th_no ); else hb_retnint( 0 ); } #else hb_retnint( 0 ); #endif } #if defined( HB_MT_VM ) static int hb_threadWait( PHB_THREADSTATE * pThreads, int iThreads, BOOL fAll, ULONG ulMilliSec ) { int i, iFinished, iResult = 0; BOOL fExit = ulMilliSec == 0; #if defined( HB_PTHREAD_API ) struct timespec ts; if( ulMilliSec != HB_THREAD_INFINITE_WAIT ) hb_threadTimeInit( &ts, ulMilliSec ); else ts.tv_sec = ts.tv_nsec = 0; #else HB_ULONG timer; if( ulMilliSec != HB_THREAD_INFINITE_WAIT ) timer = hb_dateMilliSeconds() + ulMilliSec; else timer = 0; #endif HB_CRITICAL_LOCK( s_thread_mtx ); for( ;; ) { for( i = iFinished = 0; i < iThreads; ++i ) { if( pThreads[ i ]->fFinished ) { iFinished++; if( !fAll ) { iResult = i + 1; break; } } } if( iFinished >= ( fAll ? iThreads : 1 ) ) break; if( fExit ) break; s_waiting_for_threads++; #if defined( HB_PTHREAD_API ) hb_vmUnlock(); if( ulMilliSec != HB_THREAD_INFINITE_WAIT ) fExit = pthread_cond_timedwait( &s_thread_cond, &s_thread_mtx, &ts ) != 0; else fExit = pthread_cond_wait( &s_thread_cond, &s_thread_mtx ) != 0; hb_vmLock(); #else # if defined( HB_TASK_THREAD ) hb_vmUnlock(); fExit = hb_taskWait( &s_thread_cond, &s_thread_mtx, ulMilliSec ); hb_vmLock(); # elif defined( HB_COND_HARBOUR_SUPPORT ) hb_vmUnlock(); fExit = !_hb_thread_cond_wait( &s_thread_cond, &s_thread_mtx, ulMilliSec ); hb_vmLock(); # else HB_CRITICAL_UNLOCK( s_thread_mtx ); hb_vmUnlock(); fExit = !HB_COND_TIMEDWAIT( s_thread_cond, ulMilliSec ); hb_vmLock(); HB_CRITICAL_LOCK( s_thread_mtx ); if( fExit ) s_waiting_for_threads--; # endif if( !fExit && timer ) { HB_ULONG curr = hb_dateMilliSeconds(); if( timer <= curr ) fExit = TRUE; else ulMilliSec = ( ULONG ) ( timer - curr ); } #endif if( !fExit && hb_vmRequestQuery() != 0 ) break; } HB_CRITICAL_UNLOCK( s_thread_mtx ); return fAll ? iFinished : iResult; } #endif HB_FUNC( HB_THREADJOIN ) { PHB_THREADSTATE pThread = hb_thParam( 1, 0 ); if( pThread ) { HB_STACK_TLS_PRELOAD BOOL fResult = FALSE; if( pThread->th_h ) { hb_vmUnlock(); fResult = hb_threadJoin( pThread->th_h ); if( fResult ) pThread->th_h = 0; hb_vmLock(); } if( fResult ) { if( pThread->pResult ) { hb_itemParamStoreForward( 2, pThread->pResult ); hb_itemRelease( pThread->pResult ); pThread->pResult = NULL; } } hb_retl( fResult ); } } HB_FUNC( HB_THREADDETACH ) { PHB_THREADSTATE pThread = hb_thParam( 1, 0 ); if( pThread ) { HB_STACK_TLS_PRELOAD BOOL fResult = FALSE; if( pThread->th_h && hb_threadDetach( pThread->th_h ) ) { pThread->th_h = 0; fResult = TRUE; } hb_retl( fResult ); } } HB_FUNC( HB_THREADQUITREQUEST ) { PHB_THREADSTATE pThread = hb_thParam( 1, 0 ); if( pThread ) { HB_STACK_TLS_PRELOAD BOOL fResult = FALSE; #if defined( HB_MT_VM ) if( !pThread->fActive ) { hb_vmThreadQuitRequest( ( void * ) pThread ); fResult = TRUE; } #endif hb_retl( fResult ); } } HB_FUNC( HB_THREADWAIT ) { #if defined( HB_MT_VM ) # define HB_THREAD_WAIT_ALLOC 16 HB_STACK_TLS_PRELOAD BOOL fAll = FALSE; ULONG ulMilliSec = HB_THREAD_INFINITE_WAIT; PHB_THREADSTATE * pThreads, pAlloc[ HB_THREAD_WAIT_ALLOC ]; int iThreads = -1; pThreads = pAlloc; if( HB_ISARRAY( 1 ) ) { PHB_ITEM pArray = hb_param( 1, HB_IT_ARRAY ); int iLen = ( int ) hb_arrayLen( pArray ), i; for( i = iThreads = 0; i < iLen; ++i ) { PHB_THREADSTATE pThread = hb_thParam( 1, i + 1 ); if( !pThread ) { iThreads = -1; break; } if( pThreads == pAlloc && iThreads >= HB_THREAD_WAIT_ALLOC ) { pThreads = ( PHB_THREADSTATE * ) hb_xgrab( sizeof( PHB_THREADSTATE ) * iLen ); memcpy( pThreads, pAlloc, sizeof( pAlloc ) ); } pThreads[ iThreads++ ] = pThread; } } else { pThreads[ 0 ] = hb_thParam( 1, 0 ); if( pThreads[ 0 ] ) iThreads = 1; } if( iThreads > 0 ) { if( HB_ISNUM( 2 ) ) { double dTimeOut = hb_parnd( 2 ); ulMilliSec = dTimeOut > 0 ? ( ULONG ) ( dTimeOut * 1000 ) : 0; } if( HB_ISLOG( 3 ) ) fAll = hb_parl( 3 ); hb_retni( hb_threadWait( pThreads, iThreads, fAll, ulMilliSec ) ); } else if( iThreads == 0 ) hb_retni( 0 ); if( pThreads != pAlloc ) hb_xfree( pThreads ); #endif } HB_FUNC( HB_THREADWAITFORALL ) { #if defined( HB_MT_VM ) hb_vmWaitForThreads(); #endif } HB_FUNC( HB_THREADTERMINATEALL ) { #if defined( HB_MT_VM ) hb_vmTerminateThreads(); #endif } /* hb_threadOnce( @ [, ] ) -> * Execute only once. is variable which holds * the execution status and have to be initialized to NIL. In most of * cases it will be simple staticvariable in user code. * When is executed by a thread all other threads which call * hb_threadOnce() are stopped even if they use different . * Because hb_threadOnce() uses single recursive mutex then deadlock caused * by cross call to hb_threadOnce() from different threads is not possible. * If thread calls hb_threadOnce() with the same variable * recursively from then hb_threadOnce() returns immediately * returning FALSE without executing . * This function returns logical value indicating if it was 1-st call to * hb_threadOnce() for given variable */ HB_FUNC( HB_THREADONCE ) { PHB_ITEM pItem = hb_param( 1, HB_IT_ANY ); if( pItem && HB_ISBYREF( 1 ) && ( HB_IS_NIL( pItem ) || HB_IS_LOGICAL( pItem ) ) ) { HB_STACK_TLS_PRELOAD BOOL fFirstCall = FALSE; if( HB_IS_NIL( pItem ) || !hb_itemGetL( pItem ) ) { PHB_ITEM pAction = hb_param( 2, HB_IT_BLOCK | HB_IT_SYMBOL ); #if defined( HB_MT_VM ) if( !s_pOnceMutex ) { if( !s_fThreadInit ) hb_threadInit(); HB_CRITICAL_LOCK( s_once_mtx ); if( !s_pOnceMutex ) s_pOnceMutex = hb_threadMutexCreate( FALSE ); HB_CRITICAL_UNLOCK( s_once_mtx ); } if( hb_threadMutexLock( s_pOnceMutex ) ) { if( HB_IS_NIL( pItem ) ) { if( pAction ) { hb_storl( FALSE, 1 ); hb_vmEvalBlock( pAction ); } hb_storl( TRUE, 1 ); fFirstCall = TRUE; } hb_threadMutexUnlock( s_pOnceMutex ); } #else hb_storl( TRUE, 1 ); fFirstCall = TRUE; if( pAction ) hb_vmEvalBlock( pAction ); #endif } hb_retl( fFirstCall ); } else hb_errRT_BASE_SubstR( EG_ARG, 3012, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); } /* II. MUTEXES */ typedef struct _HB_MUTEX { BOOL fSync; int lock_count; int lockers; int waiters; PHB_ITEM events; HB_THREAD_ID owner; HB_RAWCRITICAL_T mutex; HB_RAWCOND_T cond_l; HB_RAWCOND_T cond_w; struct _HB_MUTEX * pNext; struct _HB_MUTEX * pPrev; } HB_MUTEX, * PHB_MUTEX; typedef struct _HB_MTXLST { int lock_count; PHB_MUTEX pMutex; struct _HB_MTXLST * pNext; } HB_MTXLST, * PHB_MTXLST; static PHB_MUTEX s_pSyncList = NULL; static PHB_MUTEX s_pMutexList = NULL; static void hb_mutexLink( PHB_MUTEX *pList, PHB_MUTEX pItem ) { if( *pList ) { pItem->pNext = *pList; pItem->pPrev = (*pList)->pPrev; pItem->pPrev->pNext = pItem; (*pList)->pPrev = pItem; } else { *pList = pItem->pNext = pItem->pPrev = pItem; } } static void hb_mutexUnlink( PHB_MUTEX *pList, PHB_MUTEX pItem ) { pItem->pPrev->pNext = pItem->pNext; pItem->pNext->pPrev = pItem->pPrev; if( *pList == pItem ) { *pList = pItem->pNext; if( *pList == pItem ) *pList = NULL; /* this was the last block */ } } #if defined( HB_MT_VM ) static void hb_mutexListUnlock( PHB_MUTEX * pList, PHB_MTXLST * pStore ) { HB_CRITICAL_LOCK( s_mutexlst_mtx ); if( *pList ) { PHB_MUTEX pMutex = *pList; do { if( HB_THREAD_EQUAL( pMutex->owner, HB_THREAD_SELF() ) ) { HB_CRITICAL_LOCK( pMutex->mutex ); if( HB_THREAD_EQUAL( pMutex->owner, HB_THREAD_SELF() ) ) { if( pStore ) { *pStore = ( PHB_MTXLST ) hb_xgrab( sizeof( HB_MTXLST ) ); (*pStore)->lock_count = pMutex->lock_count; (*pStore)->pMutex = pMutex; pStore = &(*pStore)->pNext; *pStore = NULL; } pMutex->lock_count = 0; pMutex->owner = ( HB_THREAD_ID ) 0; if( pMutex->lockers ) HB_COND_SIGNAL( pMutex->cond_l ); } HB_CRITICAL_UNLOCK( pMutex->mutex ); } pMutex = pMutex->pNext; } while( pMutex != *pList ); } HB_CRITICAL_UNLOCK( s_mutexlst_mtx ); } static void hb_mutexListLock( PHB_MTXLST pList ) { while( pList ) { PHB_MUTEX pMutex = pList->pMutex; HB_CRITICAL_LOCK( pMutex->mutex ); while( pMutex->lock_count != 0 ) { pMutex->lockers++; #if defined( HB_PTHREAD_API ) pthread_cond_wait( &pMutex->cond_l, &pMutex->mutex ); #elif defined( HB_TASK_THREAD ) hb_taskWait( &pMutex->cond_l, &pMutex->mutex, HB_TASK_INFINITE_WAIT ); #elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pMutex->cond_l, &pMutex->mutex, HB_THREAD_INFINITE_WAIT ); #else HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_WAIT( pMutex->cond_l ); HB_CRITICAL_LOCK( pMutex->mutex ); #endif pMutex->lockers--; } pMutex->lock_count = pList->lock_count; pMutex->owner = HB_THREAD_SELF(); HB_CRITICAL_UNLOCK( pMutex->mutex ); { PHB_MTXLST pFree = pList; pList = pList->pNext; hb_xfree( pFree ); } } } void hb_threadMutexUnlockAll( void ) { hb_mutexListUnlock( &s_pMutexList, NULL ); hb_mutexListUnlock( &s_pSyncList, NULL ); } #endif static HB_GARBAGE_FUNC( hb_mutexDestructor ) { PHB_MUTEX pMutex = ( PHB_MUTEX ) Cargo; #if defined( HB_MT_VM ) HB_CRITICAL_LOCK( s_mutexlst_mtx ); hb_mutexUnlink( pMutex->fSync ? &s_pSyncList : &s_pMutexList, pMutex ); HB_CRITICAL_UNLOCK( s_mutexlst_mtx ); #else hb_mutexUnlink( pMutex->fSync ? &s_pSyncList : &s_pMutexList, pMutex ); #endif if( pMutex->events ) hb_itemRelease( pMutex->events ); #if !defined( HB_MT_VM ) /* nothing */ #else HB_CRITICAL_DESTROY( pMutex->mutex ); # if !defined( HB_COND_HARBOUR_SUPPORT ) HB_COND_DESTROY( pMutex->cond_l ); HB_COND_DESTROY( pMutex->cond_w ); # endif #endif } static PHB_MUTEX hb_mutexPtr( PHB_ITEM pItem ) { return ( PHB_MUTEX ) hb_itemGetPtrGC( pItem, hb_mutexDestructor ); } static PHB_ITEM hb_mutexParam( int iParam ) { PHB_ITEM pItem = hb_param( iParam, HB_IT_POINTER ); if( hb_itemGetPtrGC( pItem, hb_mutexDestructor ) ) return pItem; hb_errRT_BASE_SubstR( EG_ARG, 3012, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS ); return NULL; } PHB_ITEM hb_threadMutexCreate( BOOL fSync ) { PHB_MUTEX pMutex; PHB_ITEM pItem; pItem = hb_itemNew( NULL ); pMutex = ( PHB_MUTEX ) hb_gcAlloc( sizeof( HB_MUTEX ), hb_mutexDestructor ); memset( pMutex, 0, sizeof( HB_MUTEX ) ); pItem = hb_itemPutPtrGC( pItem, pMutex ); #if !defined( HB_MT_VM ) /* nothing */ #else HB_CRITICAL_INIT( pMutex->mutex ); # if !defined( HB_COND_HARBOUR_SUPPORT ) HB_COND_INIT( pMutex->cond_l ); HB_COND_INIT( pMutex->cond_w ); # endif #endif pMutex->fSync = fSync; #if defined( HB_MT_VM ) HB_CRITICAL_LOCK( s_mutexlst_mtx ); hb_mutexLink( fSync ? &s_pSyncList : &s_pMutexList, pMutex ); HB_CRITICAL_UNLOCK( s_mutexlst_mtx ); #else hb_mutexLink( fSync ? &s_pSyncList : &s_pMutexList, pMutex ); #endif return pItem; } #if defined( HB_MT_VM ) void hb_threadMutexSyncSignal( PHB_ITEM pItemMtx ) { PHB_MUTEX pMutex = hb_mutexPtr( pItemMtx ); if( pMutex ) { HB_CRITICAL_LOCK( pMutex->mutex ); if( pMutex->waiters ) { int iCount = pMutex->waiters; if( !pMutex->events ) pMutex->events = hb_itemArrayNew( iCount ); else { ULONG ulLen = hb_arrayLen( pMutex->events ); iCount -= ulLen; if( iCount > 0 ) hb_arraySize( pMutex->events, ulLen + iCount ); } if( iCount == 1 ) HB_COND_SIGNAL( pMutex->cond_w ); else if( iCount > 0 ) HB_COND_SIGNALN( pMutex->cond_w, iCount ); } else if( !pMutex->events ) pMutex->events = hb_itemArrayNew( 1 ); HB_CRITICAL_UNLOCK( pMutex->mutex ); } } BOOL hb_threadMutexSyncWait( PHB_ITEM pItemMtx, ULONG ulMilliSec, PHB_ITEM pItemSync ) { PHB_MUTEX pMutex = hb_mutexPtr( pItemMtx ), pSyncMutex = NULL; BOOL fResult = FALSE; if( pMutex ) { if( pItemSync ) { pSyncMutex = hb_mutexPtr( pItemSync ); if( !pSyncMutex ) pMutex = NULL; } } if( pMutex ) { int lock_count = 0; hb_vmUnlock(); HB_CRITICAL_LOCK( pMutex->mutex ); if( ulMilliSec && !( pMutex->events && hb_arrayLen( pMutex->events ) > 0 ) ) { /* release own locks from sync mutex */ if( pSyncMutex && HB_THREAD_EQUAL( pSyncMutex->owner, HB_THREAD_SELF() ) ) { HB_CRITICAL_LOCK( pSyncMutex->mutex ); lock_count = pSyncMutex->lock_count; pSyncMutex->lock_count = 0; pSyncMutex->owner = ( HB_THREAD_ID ) 0; if( pSyncMutex->lockers ) HB_COND_SIGNAL( pSyncMutex->cond_l ); HB_CRITICAL_UNLOCK( pSyncMutex->mutex ); } if( ulMilliSec == HB_THREAD_INFINITE_WAIT ) { while( !pMutex->events || hb_arrayLen( pMutex->events ) == 0 ) { pMutex->waiters++; # if defined( HB_PTHREAD_API ) pthread_cond_wait( &pMutex->cond_w, &pMutex->mutex ); # elif defined( HB_TASK_THREAD ) hb_taskWait( &pMutex->cond_w, &pMutex->mutex, HB_TASK_INFINITE_WAIT ); # elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pMutex->cond_w, &pMutex->mutex, HB_THREAD_INFINITE_WAIT ); # else HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_WAIT( pMutex->cond_w ); HB_CRITICAL_LOCK( pMutex->mutex ); # endif pMutex->waiters--; } } else { pMutex->waiters++; # if defined( HB_PTHREAD_API ) { struct timespec ts; hb_threadTimeInit( &ts, ulMilliSec ); while( !pMutex->events || hb_arrayLen( pMutex->events ) == 0 ) { if( pthread_cond_timedwait( &pMutex->cond_w, &pMutex->mutex, &ts ) != 0 ) break; } } # else { /* TODO: on some platforms HB_COND_SIGNAL() may wake up more then * one thread so we should use while loop to check if wait * condition is true. */ # if defined( HB_TASK_THREAD ) hb_taskWait( &pMutex->cond_w, &pMutex->mutex, ulMilliSec ); # elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pMutex->cond_w, &pMutex->mutex, ulMilliSec ); # else HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_TIMEDWAIT( pMutex->cond_w, ulMilliSec ); HB_CRITICAL_LOCK( pMutex->mutex ); # endif } # endif pMutex->waiters--; } } if( pMutex->events && hb_arrayLen( pMutex->events ) > 0 ) { hb_arraySize( pMutex->events, hb_arrayLen( pMutex->events ) - 1 ); fResult = TRUE; } HB_CRITICAL_UNLOCK( pMutex->mutex ); /* restore the own locks on sync mutex if necessary */ if( lock_count ) { HB_CRITICAL_LOCK( pSyncMutex->mutex ); if( pSyncMutex->owner ) { pSyncMutex->lockers++; while( pSyncMutex->lock_count != 0 ) { # if defined( HB_PTHREAD_API ) pthread_cond_wait( &pSyncMutex->cond_l, &pSyncMutex->mutex ); # elif defined( HB_TASK_THREAD ) hb_taskWait( &pSyncMutex->cond_l, &pSyncMutex->mutex, HB_TASK_INFINITE_WAIT ); # elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pSyncMutex->cond_l, &pSyncMutex->mutex, HB_THREAD_INFINITE_WAIT ); # else HB_CRITICAL_UNLOCK( pSyncMutex->mutex ); ( void ) HB_COND_WAIT( pSyncMutex->cond_l ); HB_CRITICAL_LOCK( pSyncMutex->mutex ); # endif } pSyncMutex->lockers--; } pSyncMutex->lock_count = lock_count; pSyncMutex->owner = HB_THREAD_SELF(); HB_CRITICAL_UNLOCK( pSyncMutex->mutex ); } hb_vmLock(); } return fResult; } #endif /* HB_MT_VM */ BOOL hb_threadMutexUnlock( PHB_ITEM pItem ) { PHB_MUTEX pMutex = hb_mutexPtr( pItem ); BOOL fResult = FALSE; if( pMutex ) { #if !defined( HB_MT_VM ) if( pMutex->lock_count ) { if( --pMutex->lock_count == 0 ) pMutex->owner = ( HB_THREAD_ID ) 0; fResult = TRUE; } #else HB_CRITICAL_LOCK( pMutex->mutex ); if( HB_THREAD_EQUAL( pMutex->owner, HB_THREAD_SELF() ) ) { if( --pMutex->lock_count == 0 ) { pMutex->owner = ( HB_THREAD_ID ) 0; if( pMutex->lockers ) HB_COND_SIGNAL( pMutex->cond_l ); } fResult = TRUE; } HB_CRITICAL_UNLOCK( pMutex->mutex ); #endif } return fResult; } BOOL hb_threadMutexLock( PHB_ITEM pItem ) { PHB_MUTEX pMutex = hb_mutexPtr( pItem ); BOOL fResult = FALSE; if( pMutex ) { #if !defined( HB_MT_VM ) pMutex->lock_count++; pMutex->owner = ( HB_THREAD_ID ) 1; fResult = TRUE; #else if( HB_THREAD_EQUAL( pMutex->owner, HB_THREAD_SELF() ) ) { pMutex->lock_count++; fResult = TRUE; } else { hb_vmUnlock(); HB_CRITICAL_LOCK( pMutex->mutex ); while( pMutex->lock_count != 0 ) { pMutex->lockers++; # if defined( HB_PTHREAD_API ) pthread_cond_wait( &pMutex->cond_l, &pMutex->mutex ); # elif defined( HB_TASK_THREAD ) hb_taskWait( &pMutex->cond_l, &pMutex->mutex, HB_TASK_INFINITE_WAIT ); # elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pMutex->cond_l, &pMutex->mutex, HB_THREAD_INFINITE_WAIT ); # else HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_WAIT( pMutex->cond_l ); HB_CRITICAL_LOCK( pMutex->mutex ); # endif pMutex->lockers--; } pMutex->lock_count = 1; pMutex->owner = HB_THREAD_SELF(); HB_CRITICAL_UNLOCK( pMutex->mutex ); fResult = TRUE; hb_vmLock(); } #endif } return fResult; } BOOL hb_threadMutexTimedLock( PHB_ITEM pItem, ULONG ulMilliSec ) { PHB_MUTEX pMutex = hb_mutexPtr( pItem ); BOOL fResult = FALSE; if( pMutex ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( ulMilliSec ); pMutex->lock_count++; pMutex->owner = ( HB_THREAD_ID ) 1; fResult = TRUE; #else if( HB_THREAD_EQUAL( pMutex->owner, HB_THREAD_SELF() ) ) { pMutex->lock_count++; fResult = TRUE; } else { hb_vmUnlock(); HB_CRITICAL_LOCK( pMutex->mutex ); if( ulMilliSec && pMutex->lock_count != 0 ) { # if defined( HB_PTHREAD_API ) struct timespec ts; hb_threadTimeInit( &ts, ulMilliSec ); /* pthread_cond_signal() wakes up at least one thread * but it's not guaranteed it's exactly one thread so * we should use while loop here. */ pMutex->lockers++; do { if( pthread_cond_timedwait( &pMutex->cond_l, &pMutex->mutex, &ts ) != 0 ) break; } while( pMutex->lock_count != 0 ); pMutex->lockers--; # else /* TODO: on some platforms HB_COND_SIGNAL() may wake up more then * one thread so we should use while loop to check if wait * condition is true. */ # if defined( HB_TASK_THREAD ) pMutex->lockers++; hb_taskWait( &pMutex->cond_l, &pMutex->mutex, ulMilliSec ); pMutex->lockers--; # elif defined( HB_COND_HARBOUR_SUPPORT ) pMutex->lockers++; _hb_thread_cond_wait( &pMutex->cond_l, &pMutex->mutex, ulMilliSec ); pMutex->lockers--; # else pMutex->lockers++; HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_TIMEDWAIT( pMutex->cond_l, ulMilliSec ); HB_CRITICAL_LOCK( pMutex->mutex ); pMutex->lockers--; # endif # endif } if( pMutex->lock_count == 0 ) { pMutex->lock_count = 1; pMutex->owner = HB_THREAD_SELF(); fResult = TRUE; } HB_CRITICAL_UNLOCK( pMutex->mutex ); hb_vmLock(); } #endif } return fResult; } void hb_threadMutexNotify( PHB_ITEM pItem, PHB_ITEM pNotifier, BOOL fWaiting ) { PHB_MUTEX pMutex = hb_mutexPtr( pItem ); if( pMutex ) { #if !defined( HB_MT_VM ) if( !fWaiting ) { if( !pMutex->events ) { pMutex->events = hb_itemArrayNew( 1 ); if( pNotifier && !HB_IS_NIL( pNotifier ) ) hb_arraySet( pMutex->events, 1, pNotifier ); } else if( pNotifier ) hb_arrayAdd( pMutex->events, pNotifier ); else hb_arraySize( pMutex->events, hb_arrayLen( pMutex->events ) + 1 ); } else if( pMutex->waiters ) { int iCount = pMutex->waiters; ULONG ulLen; if( pMutex->events ) { ulLen = hb_arrayLen( pMutex->events ); iCount -= ulLen; if( iCount > 0 ) hb_arraySize( pMutex->events, ulLen + iCount ); } else { ulLen = 0; pMutex->events = hb_itemArrayNew( iCount ); } if( iCount > 0 ) { if( pNotifier && !HB_IS_NIL( pNotifier ) ) { int iSet = iCount; do hb_arraySet( pMutex->events, ++ulLen, pNotifier ); while( --iSet ); } } } #else HB_CRITICAL_LOCK( pMutex->mutex ); if( !fWaiting ) { if( !pMutex->events ) { pMutex->events = hb_itemArrayNew( 1 ); if( pNotifier && !HB_IS_NIL( pNotifier ) ) hb_arraySet( pMutex->events, 1, pNotifier ); } else if( pNotifier ) hb_arrayAdd( pMutex->events, pNotifier ); else hb_arraySize( pMutex->events, hb_arrayLen( pMutex->events ) + 1 ); if( pMutex->waiters ) HB_COND_SIGNAL( pMutex->cond_w ); } else if( pMutex->waiters ) { int iCount = pMutex->waiters; ULONG ulLen; if( pMutex->events ) { ulLen = hb_arrayLen( pMutex->events ); iCount -= ulLen; if( iCount > 0 ) hb_arraySize( pMutex->events, ulLen + iCount ); } else { ulLen = 0; pMutex->events = hb_itemArrayNew( iCount ); } if( iCount > 0 ) { if( pNotifier && !HB_IS_NIL( pNotifier ) ) { int iSet = iCount; do hb_arraySet( pMutex->events, ++ulLen, pNotifier ); while( --iSet ); } if( iCount == 1 ) HB_COND_SIGNAL( pMutex->cond_w ); else HB_COND_SIGNALN( pMutex->cond_w, iCount ); } } HB_CRITICAL_UNLOCK( pMutex->mutex ); #endif } } PHB_ITEM hb_threadMutexSubscribe( PHB_ITEM pItem, BOOL fClear ) { PHB_MUTEX pMutex = hb_mutexPtr( pItem ); PHB_ITEM pResult = NULL; if( pMutex ) { #if !defined( HB_MT_VM ) if( pMutex->events && hb_arrayLen( pMutex->events ) > 0 ) { if( fClear && pMutex->events ) hb_arraySize( pMutex->events, 0 ); else { pResult = hb_itemNew( NULL ); hb_arrayGet( pMutex->events, 1, pResult ); hb_arrayDel( pMutex->events, 1 ); hb_arraySize( pMutex->events, hb_arrayLen( pMutex->events ) - 1 ); } } #else PHB_MTXLST pSyncList = NULL; BOOL fSync = TRUE; int lock_count = 0; hb_vmUnlock(); HB_CRITICAL_LOCK( pMutex->mutex ); if( fClear && pMutex->events ) hb_arraySize( pMutex->events, 0 ); /* release own lock from this mutex */ if( HB_THREAD_EQUAL( pMutex->owner, HB_THREAD_SELF() ) ) { lock_count = pMutex->lock_count; pMutex->lock_count = 0; pMutex->owner = ( HB_THREAD_ID ) 0; if( pMutex->lockers ) HB_COND_SIGNAL( pMutex->cond_l ); } while( !pMutex->events || hb_arrayLen( pMutex->events ) == 0 ) { if( fSync ) { /* SYNC method mutexes cannot be used for subscribe so it's safe * to unlock them when THIS mutex is internally locked */ hb_mutexListUnlock( &s_pSyncList, &pSyncList ); fSync = FALSE; } pMutex->waiters++; # if defined( HB_PTHREAD_API ) pthread_cond_wait( &pMutex->cond_w, &pMutex->mutex ); # elif defined( HB_TASK_THREAD ) hb_taskWait( &pMutex->cond_w, &pMutex->mutex, HB_TASK_INFINITE_WAIT ); # elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pMutex->cond_w, &pMutex->mutex, HB_THREAD_INFINITE_WAIT ); # else HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_WAIT( pMutex->cond_w ); HB_CRITICAL_LOCK( pMutex->mutex ); # endif pMutex->waiters--; } if( pMutex->events && hb_arrayLen( pMutex->events ) > 0 ) { pResult = hb_itemNew( NULL ); hb_arrayGet( pMutex->events, 1, pResult ); hb_arrayDel( pMutex->events, 1 ); hb_arraySize( pMutex->events, hb_arrayLen( pMutex->events ) - 1 ); } /* restore the own lock on this mutex if necessary */ if( lock_count ) { if( pMutex->owner ) { pMutex->lockers++; while( pMutex->lock_count != 0 ) { # if defined( HB_PTHREAD_API ) pthread_cond_wait( &pMutex->cond_l, &pMutex->mutex ); # elif defined( HB_TASK_THREAD ) hb_taskWait( &pMutex->cond_l, &pMutex->mutex, HB_TASK_INFINITE_WAIT ); # elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pMutex->cond_l, &pMutex->mutex, HB_THREAD_INFINITE_WAIT ); # else HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_WAIT( pMutex->cond_l ); HB_CRITICAL_LOCK( pMutex->mutex ); # endif } pMutex->lockers--; } pMutex->lock_count = lock_count; pMutex->owner = HB_THREAD_SELF(); } HB_CRITICAL_UNLOCK( pMutex->mutex ); hb_mutexListLock( pSyncList ); hb_vmLock(); #endif } return pResult; } PHB_ITEM hb_threadMutexTimedSubscribe( PHB_ITEM pItem, ULONG ulMilliSec, BOOL fClear ) { PHB_MUTEX pMutex = hb_mutexPtr( pItem ); PHB_ITEM pResult = NULL; if( pMutex ) { #if !defined( HB_MT_VM ) HB_SYMBOL_UNUSED( ulMilliSec ); if( pMutex->events && hb_arrayLen( pMutex->events ) > 0 ) { if( fClear && pMutex->events ) hb_arraySize( pMutex->events, 0 ); else { pResult = hb_itemNew( NULL ); hb_arrayGet( pMutex->events, 1, pResult ); hb_arrayDel( pMutex->events, 1 ); hb_arraySize( pMutex->events, hb_arrayLen( pMutex->events ) - 1 ); } } #else PHB_MTXLST pSyncList = NULL; int lock_count = 0; hb_vmUnlock(); HB_CRITICAL_LOCK( pMutex->mutex ); if( fClear && pMutex->events ) hb_arraySize( pMutex->events, 0 ); if( ulMilliSec && !( pMutex->events && hb_arrayLen( pMutex->events ) > 0 ) ) { /* release own lock from this mutex */ if( HB_THREAD_EQUAL( pMutex->owner, HB_THREAD_SELF() ) ) { lock_count = pMutex->lock_count; pMutex->lock_count = 0; pMutex->owner = ( HB_THREAD_ID ) 0; if( pMutex->lockers ) HB_COND_SIGNAL( pMutex->cond_l ); } /* SYNC method mutexes cannot be used for subscribe so it's safe * to unlock them when THIS mutex is internally locked */ hb_mutexListUnlock( &s_pSyncList, &pSyncList ); pMutex->waiters++; # if defined( HB_PTHREAD_API ) { struct timespec ts; hb_threadTimeInit( &ts, ulMilliSec ); while( !pMutex->events || hb_arrayLen( pMutex->events ) == 0 ) { if( pthread_cond_timedwait( &pMutex->cond_w, &pMutex->mutex, &ts ) != 0 ) break; } } # else { /* TODO: on some platforms HB_COND_SIGNAL() may wake up more then * one thread so we should use while loop to check if wait * condition is true. */ # if defined( HB_TASK_THREAD ) hb_taskWait( &pMutex->cond_w, &pMutex->mutex, ulMilliSec ); # elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pMutex->cond_w, &pMutex->mutex, ulMilliSec ); # else HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_TIMEDWAIT( pMutex->cond_w, ulMilliSec ); HB_CRITICAL_LOCK( pMutex->mutex ); # endif } # endif pMutex->waiters--; } if( pMutex->events && hb_arrayLen( pMutex->events ) > 0 ) { pResult = hb_itemNew( NULL ); hb_arrayGet( pMutex->events, 1, pResult ); hb_arrayDel( pMutex->events, 1 ); hb_arraySize( pMutex->events, hb_arrayLen( pMutex->events ) - 1 ); } /* restore the own lock on this mutex if necessary */ if( lock_count ) { if( pMutex->owner ) { pMutex->lockers++; while( pMutex->lock_count != 0 ) { # if defined( HB_PTHREAD_API ) pthread_cond_wait( &pMutex->cond_l, &pMutex->mutex ); # elif defined( HB_TASK_THREAD ) hb_taskWait( &pMutex->cond_l, &pMutex->mutex, HB_TASK_INFINITE_WAIT ); # elif defined( HB_COND_HARBOUR_SUPPORT ) _hb_thread_cond_wait( &pMutex->cond_l, &pMutex->mutex, HB_THREAD_INFINITE_WAIT ); # else HB_CRITICAL_UNLOCK( pMutex->mutex ); ( void ) HB_COND_WAIT( pMutex->cond_l ); HB_CRITICAL_LOCK( pMutex->mutex ); # endif } pMutex->lockers--; } pMutex->lock_count = lock_count; pMutex->owner = HB_THREAD_SELF(); } HB_CRITICAL_UNLOCK( pMutex->mutex ); hb_mutexListLock( pSyncList ); hb_vmLock(); #endif } return pResult; } HB_FUNC( HB_MUTEXCREATE ) { hb_itemReturnRelease( hb_threadMutexCreate( FALSE ) ); } HB_FUNC( HB_MUTEXLOCK ) { PHB_ITEM pItem = hb_mutexParam( 1 ); if( pItem ) { HB_STACK_TLS_PRELOAD if( HB_ISNUM( 2 ) ) { ULONG ulMilliSec = 0; double dTimeOut = hb_parnd( 2 ); if( dTimeOut > 0 ) ulMilliSec = ( ULONG ) ( dTimeOut * 1000 ); hb_retl( hb_threadMutexTimedLock( pItem, ulMilliSec ) ); } else hb_retl( hb_threadMutexLock( pItem ) ); } } HB_FUNC( HB_MUTEXUNLOCK ) { PHB_ITEM pItem = hb_mutexParam( 1 ); if( pItem ) { HB_STACK_TLS_PRELOAD hb_retl( hb_threadMutexUnlock( pItem ) ); } } HB_FUNC( HB_MUTEXNOTIFY ) { PHB_ITEM pItem = hb_mutexParam( 1 ); if( pItem ) hb_threadMutexNotify( pItem, hb_param( 2, HB_IT_ANY ), FALSE ); } HB_FUNC( HB_MUTEXNOTIFYALL ) { PHB_ITEM pItem = hb_mutexParam( 1 ); if( pItem ) hb_threadMutexNotify( pItem, hb_param( 2, HB_IT_ANY ), TRUE ); } HB_FUNC( HB_MUTEXSUBSCRIBE ) { PHB_ITEM pItem = hb_mutexParam( 1 ); if( pItem ) { HB_STACK_TLS_PRELOAD PHB_ITEM pResult; if( HB_ISNUM( 2 ) ) { ULONG ulMilliSec = 0; double dTimeOut = hb_parnd( 2 ); if( dTimeOut > 0 ) ulMilliSec = ( ULONG ) ( dTimeOut * 1000 ); pResult = hb_threadMutexTimedSubscribe( pItem, ulMilliSec, FALSE ); } else pResult = hb_threadMutexSubscribe( pItem, FALSE ); if( pResult ) { hb_itemParamStoreForward( 3, pResult ); hb_itemRelease( pResult ); hb_retl( TRUE ); } else hb_retl( FALSE ); } } HB_FUNC( HB_MUTEXSUBSCRIBENOW ) { PHB_ITEM pItem = hb_mutexParam( 1 ); if( pItem ) { HB_STACK_TLS_PRELOAD PHB_ITEM pResult; if( HB_ISNUM( 2 ) ) { ULONG ulMilliSec = 0; double dTimeOut = hb_parnd( 2 ); if( dTimeOut > 0 ) ulMilliSec = ( ULONG ) ( dTimeOut * 1000 ); pResult = hb_threadMutexTimedSubscribe( pItem, ulMilliSec, TRUE ); } else pResult = hb_threadMutexSubscribe( pItem, TRUE ); if( pResult ) { hb_itemParamStoreForward( 3, pResult ); hb_itemRelease( pResult ); hb_retl( TRUE ); } else hb_retl( FALSE ); } } HB_FUNC( HB_MUTEXQUEUEINFO ) { HB_STACK_TLS_PRELOAD PHB_ITEM pItem = hb_mutexParam( 1 ); if( pItem ) { PHB_MUTEX pMutex = hb_mutexPtr( pItem ); if( pMutex ) { hb_storni( pMutex->waiters, 2 ); hb_stornl( pMutex->events ? hb_arrayLen( pMutex->events ) : 0, 3 ); hb_retl( TRUE ); return; } } hb_storni( 0, 2 ); hb_stornl( 0, 3 ); hb_retl( FALSE ); } HB_FUNC( HB_MTVM ) { HB_STACK_TLS_PRELOAD #if defined( HB_MT_VM ) hb_retl( TRUE ); #else hb_retl( FALSE ); #endif } #if defined( HB_TASK_THREAD ) && defined( HB_MT_VM ) # include "task.c" #endif