static ULONG vlc_DosWaitEventSemEx( HEV hev, ULONG ulTimeout, BOOL fCancelable )
{
HMUX hmux;
SEMRECORD asr[ 2 ];
ULONG ulUser;
int n;
ULONG rc;
struct vlc_thread *th = vlc_threadvar_get( thread_key );
if( th == NULL || !fCancelable )
{
/* Main thread - cannot be cancelled anyway
* Alien thread - out of our control
*/
if( hev != NULLHANDLE )
return DosWaitEventSem( hev, ulTimeout );
return DosSleep( ulTimeout );
}
n = 0;
if( hev != NULLHANDLE )
{
asr[ n ].hsemCur = ( HSEM )hev;
asr[ n ].ulUser = 0;
n++;
}
asr[ n ].hsemCur = ( HSEM )th->cancel_event;
asr[ n ].ulUser = 0xFFFF;
n++;
DosCreateMuxWaitSem( NULL, &hmux, n, asr, DCMW_WAIT_ANY );
rc = DosWaitMuxWaitSem( hmux, ulTimeout, &ulUser );
DosCloseMuxWaitSem( hmux );
if( rc )
return rc;
if( ulUser == 0xFFFF )
{
vlc_cancel_self( th );
return ERROR_INTERRUPT;
}
return NO_ERROR;
}
/****************************************************************\
* Routine to really stop semaphore example. *
*--------------------------------------------------------------*
* *
* Name: StopSemaphore( PVOID pvArg ) *
* *
* Purpose: Waits for threads to complete, *
* Sends message to message thread to indicate this *
* has occurred, and exits. *
* *
* Usage: Exec'd from BeginStop when user selects Stop from *
* Semaphore menu. *
* *
* Method: Turns off Auto mode, if present by posting auto *
* semaphore. Then stop event is posted. Waits *
* for threads to die. *
* Returns: *
* *
\****************************************************************/
VOID StopSemaphore( PVOID pvArg )
{
ULONG rc,usCount, i;
PULONG pfAutoMode = (PULONG)pvArg;
if (*pfAutoMode)
{
rc = DosWaitThread(&tidAutoThread,0L);
if (rc && (rc != ERROR_INVALID_THREADID))
{
SemError("DosWaitThread",rc);
}
*pfAutoMode = FALSE;
}
/* Wait for usConsumer threads to die. Order of death not important. */
for (usCount = 0; usCount < usConsumerThreadsCreated; usCount++)
{
rc = DosWaitThread(&thrConsumers[usCount].tid,0L);
/* rc is ERROR_INVALID_THREADID the thread is already dead.*\
\* This is OK and not a error. */
if (rc && (rc != ERROR_INVALID_THREADID))
{
SemError("DosWaitThread",rc);
}
}
/* Threads dead so we don't need semaphores any more. */
DosCloseEventSem(hevStopAuto);
DosCloseEventSem(hevStop);
DosCloseMutexSem(hmtxOwnResource);
for (i = 0; i < MAXRESOURCES; i++)
{
DosCloseEventSem(aSquares[i].hev);
}
DosCloseMuxWaitSem (hmuxResource);
WinPostMsg (hwndMain, WM_COMMAND, (MPARAM)IDM_STOPFINISHED, (MPARAM)NULL);
DosExit (EXIT_THREAD, 0);
return;
}
void TThreads::suspend() {
shutDownFlag=1;
TID localTID=mouseThreadID;
if (localTID != 0xFFFF) DosWaitThread(&localTID,DCWW_WAIT);
// cerr << " MouseThread has ended\n";
ULONG count;
assert(! DosQueryEventSem(TThreads::hevKeyboard2,&count));
if (!count)
assert(! DosPostEventSem(TThreads::hevKeyboard2)); // Make sure the thread is running.
localTID=keyboardThreadID;
DosWaitThread(&localTID,DCWW_WAIT);
// cerr << " KeyboardThread has ended\n";
assert(!DosCloseMutexSem(hmtxMouse1));
assert(!DosCloseEventSem(hevKeyboard2));
assert(!DosCloseEventSem(hevKeyboard1));
assert(!DosCloseEventSem(hevMouse2));
assert(!DosCloseEventSem(hevMouse1));
assert(!DosCloseMuxWaitSem(hmuxMaster));
if (tiled->mouseHandle != 0xFFFF) MouClose(tiled->mouseHandle); // This doesn't work, the mouseThread uses the handle.
assert(! DosFreeMem(tiled)); // Better not, dito
}
int main(VOID) {
HMUX hmuxHandAny = NULLHANDLE; /* Muxwaithandle */
HEV hev[5] = {0}; /* Event semaphores */
SEMRECORD apsr[5] = {{0}}; /* Semaphore records */
APIRET rc = NO_ERROR; /* Return code */
ULONG ulLoop = 0; /* Loop count */
ULONG ulSem = 0;
for (ulLoop = 0; ulLoop < 5; ulLoop++) {
rc = DosCreateEventSem((PSZ) NULL,
&hev[ulLoop],
0,
FALSE);
if (rc != NO_ERROR) {
printf("DosCreateEventSem error: return code = %u\n", rc);
return 1;
}
apsr[ulLoop].hsemCur = (HSEM) hev[ulLoop],
apsr[ulLoop].ulUser = 0;
} /* endfor */
rc = DosCreateMuxWaitSem((PSZ) NULL,
&hmuxHandAny,
5L, /* Number of semaphores in list */
apsr, /* Semaphore list */
DCMW_WAIT_ANY); /* Wait for any semaphore */
if (rc != NO_ERROR) {
printf("DosCreateMuxWaitSem error: return code = %u\n", rc);
return 1;
}
rc = DosWaitMuxWaitSem(hmuxHandAny,
SEM_IMMEDIATE_RETURN,
&ulSem); /* No semaphores have been posted, so
we should see a timeout below... */
if (rc != ERROR_TIMEOUT) {
printf("DosWaitMuxWaitSem error: return code = %u\n", rc);
return 1;
}
rc = DosDeleteMuxWaitSem(hmuxHandAny, apsr[0].hsemCur);
if (rc != NO_ERROR) {
printf("DosDeleteMuxWaitSem error: return code = %u\n", rc);
return 1;
}
rc = DosCloseMuxWaitSem(hmuxHandAny);
if (rc != NO_ERROR) {
printf("DosCloseMuxWaitSem error: return code = %u\n", rc);
return 1;
}
return NO_ERROR;
}
BOOL OMuxWaitSem::closeMuxWaitSem()
{
muxwaitState = DosCloseMuxWaitSem(hmux);
return(muxwaitState == 0);
}
