void HAL_COMPLETION::DequeueAndExec()
{
NATIVE_PROFILE_PAL_ASYNC_PROC_CALL();
GLOBAL_LOCK(irq);
HAL_COMPLETION* ptr = (HAL_COMPLETION*)g_HAL_Completion_List.FirstNode();
HAL_COMPLETION* ptrNext = (HAL_COMPLETION*)ptr->Next();
// waitforevents does not have an associated completion, therefore we need to verify
// than their is a next completion and that the current one has expired.
if(ptrNext)
{
ASSERT(ptr->EventTimeTicks <= HAL_Time_CurrentTicks());
Events_Set(SYSTEM_EVENT_FLAG_SYSTEM_TIMER);
ptr->Unlink();
//
// In case there's no other request to serve, set the next interrupt to be 356 years since last powerup (@25kHz).
//
HAL_Time_SetCompare( ptrNext->Next() ? ptrNext->EventTimeTicks : HAL_Completion_IdleValue );
#if defined(_DEBUG)
ptr->EventTimeTicks = 0;
#endif // defined(_DEBUG)
// let the ISR turn on interrupts, if it needs to
ptr->Execute();
}
}
void HAL_COMPLETION::EnqueueTicks( UINT64 EventTimeTicks )
{
NATIVE_PROFILE_PAL_ASYNC_PROC_CALL();
ASSERT(EventTimeTicks != 0);
GLOBAL_LOCK(irq);
this->EventTimeTicks = EventTimeTicks;
#if defined(_DEBUG)
this->Start_RTC_Ticks = HAL_Time_CurrentTicks();
#endif
HAL_COMPLETION* ptr = (HAL_COMPLETION*)g_HAL_Completion_List.FirstNode();
HAL_COMPLETION* ptrNext;
for(;(ptrNext = (HAL_COMPLETION*)ptr->Next()); ptr = ptrNext)
{
if(EventTimeTicks < ptr->EventTimeTicks) break;
}
g_HAL_Completion_List.InsertBeforeNode( ptr, this );
if(this == g_HAL_Completion_List.FirstNode())
{
HAL_Time_SetCompare( EventTimeTicks );
}
}
void HAL_COMPLETION::WaitForInterrupts( UINT64 Expire, UINT32 sleepLevel, UINT64 wakeEvents )
{
NATIVE_PROFILE_PAL_ASYNC_PROC_CALL();
const int c_SetCompare = 1;
const int c_ResetCompare = 2;
const int c_NilCompare = 4;
ASSERT_IRQ_MUST_BE_OFF();
HAL_COMPLETION* ptr = (HAL_COMPLETION*)g_HAL_Completion_List.FirstNode();
int state;
if(ptr->Next() == NULL)
{
state = c_SetCompare | c_NilCompare;
}
else if(ptr->EventTimeTicks > Expire)
{
state = c_SetCompare | c_ResetCompare;
}
else
{
state = 0;
}
if(state & c_SetCompare) HAL_Time_SetCompare( Expire );
CPU_Sleep( (SLEEP_LEVEL)sleepLevel, wakeEvents );
if(state & (c_ResetCompare | c_NilCompare))
{
// let's get the first node again
// it could have changed since CPU_Sleep re-enabled interrupts
ptr = (HAL_COMPLETION*)g_HAL_Completion_List.FirstNode();
HAL_Time_SetCompare( (state & c_ResetCompare) ? ptr->EventTimeTicks : HAL_Completion_IdleValue );
}
}