void FMTest1PInterfererThread(TAny* a)
{
SFMTest1Info& info = *(SFMTest1Info*)a;
NThread* pC = NKern::CurrentThread();
TEST_PRINT1("Thread %T start", pC);
TUint32 seed[2] = {(TUint32)pC, 0};
NThread* t0 = info.iThreads[0];
TInt n = 0;
while (!__e32_atomic_load_acq32(&info.iStop))
{
while (!__e32_atomic_load_acq32(&info.iStop) && t0->iPriority != 11)
__chill();
TUint32 x = random(seed) & 2047;
while(x)
{
__e32_atomic_add_ord32(&x, TUint32(-1));
}
if (__e32_atomic_load_acq32(&info.iStop))
break;
NKern::ThreadSetPriority(t0, 9);
++n;
}
TEST_PRINT2("Thread %T ran %d times", pC, n);
}
TBool NTimer::DoCancelMutating(TUint aFlags)
{
CHECK_PRECONDITIONS(MASK_NOT_ISR,"NTimer::Cancel (mutating NTimer)");
TSubScheduler& ss0 = SubScheduler();
TBool wait = FALSE;
TInt cpu = -1;
TBool result = TRUE;
TDfc* d = (TDfc*)this;
NKern::Lock();
TDfcQue* q = iDfcQ;
NThreadBase* t = q->iThread;
t->AcqSLock();
TheTimerQ.iTimerSpinLock.LockIrq();
// 0000->0000, XX00->ZZ00, xxYY->zzYY
TUint state = d->CancelInitialStateChange();
if (state & 0xFF00)
{
// someone else cancelling at the same time - just wait for them to finish
// they can only be waiting for the cancel IPI
result = FALSE;
wait = TRUE;
goto end;
}
if (state == 0) // timer was not active
{
result = FALSE;
goto end;
}
if (state>=ETransferring && state<=EFinal)
{
DoCancel0(state);
// cancel is complete
goto reset;
}
if (state==1)
{
// on DFC final queue
q->Remove((TPriListLink*)this);
goto reset;
}
// must be on IDFC queue - need to send cancel IPI
__NK_ASSERT_ALWAYS((state>>5)==4);
cpu = state & 0x1f;
if (TUint(cpu) == ss0.iCpuNum)
{
// it's on this CPU's IDFC queue so just dequeue it and finish
Deque();
cpu = -1;
reset:
d->ResetState(); // release semantics
}
end:
if (aFlags & ECancelDestroy)
iHType = EEventHandlerDummy;
TheTimerQ.iTimerSpinLock.UnlockIrq();
t->RelSLock();
if (cpu>=0)
{
TCancelIPI ipi;
ipi.Send(d, cpu);
ipi.WaitCompletion();
wait = TRUE;
}
if (wait)
{
TUint n = 0x01000000;
while ((i8816.iHState16>>8) & ss0.iCpuMask)
{
__chill();
if (!--n)
__crash();
}
}
NKern::Unlock();
return result;
}