Page 90 - demo

Power Management

Alarms Wakelocks

 Implemented in the Linux kernel  Prevents an Android system from
and is visible to the app developer entering into sleep mode
through the AlarmManager in the

RunTime core libraries  These locks are requested through
the API whenever an application
 Is implemented in the kernel so requires one of the managed

that an alarm can trigger even if peripherals to remain powered on
the system is in sleep mode

 this allows the system to go  An application can hold one of
into sleep mode, saving the following wakelocks:

power, even though there is  Full_Wake_Lock
a process that requires a  Partial_Wake_Lock
wake up
 Screen_Dim_Wake_Lock
 Screen_Bright_Wake_Lock