bool IOInterruptEventSource::checkForWork()
{
unsigned int cacheProdCount = producerCount;
int numInts = cacheProdCount - consumerCount;
IOInterruptEventAction intAction = (IOInterruptEventAction) action;
if (numInts > 0) {
IOTimeStampLatency();
IOTimeTypeStampS(IOINTES_CLIENT);
IOTimeStampConstant(IODBG_INTES(IOINTES_ACTION),
(uintptr_t) intAction, (uintptr_t) owner);
(*intAction)(owner, this, numInts);
IOTimeTypeStampE(IOINTES_CLIENT);
consumerCount = cacheProdCount;
if (autoDisable && !explicitDisable)
enable();
}
else if (numInts < 0) {
IOTimeStampLatency();
IOTimeTypeStampS(IOINTES_CLIENT);
IOTimeStampConstant(IODBG_INTES(IOINTES_ACTION),
(uintptr_t) intAction, (uintptr_t) owner);
(*intAction)(owner, this, -numInts);
IOTimeTypeStampE(IOINTES_CLIENT);
consumerCount = cacheProdCount;
if (autoDisable && !explicitDisable)
enable();
}
return false;
}
void IOInterruptController::timeStampSpuriousInterrupt(void)
{
uint64_t providerID = 0;
IOService * provider = getProvider();
if (provider) {
providerID = provider->getRegistryEntryID();
}
IOTimeStampConstant(IODBG_INTC(IOINTC_SPURIOUS), providerID);
}
