iokit/Kernel/IOService.cpp

3341     uint64_t    timeoutNS;
3345 	timeoutNS = timeout->tv_sec;
3346 	timeoutNS *= kSecondScale;
3347 	timeoutNS += timeout->tv_nsec;
3350 	timeoutNS = UINT64_MAX;
3352     return( waitForState( kIOServiceBusyStateMask, 0, timeoutNS ));
4010     uint64_t    timeoutNS;
4014 	timeoutNS = timeout->tv_sec;
4015 	timeoutNS *= kSecondScale;
4016 	timeoutNS += timeout->tv_nsec;
4019 	timeoutNS = UINT64_MAX;
4021     result = waitForMatchingService(matching, timeoutNS);