PROTOCOLS
Watcher
Defined in fuchsia.power.profile/profile.fidl
Protocol for observing changes to the system power profile.
Watch
Watches for changes to the system power profile.
On a given connection, the first call will return immediately with the current system power
profile, while subsequent calls will only return a new profile as the system power profile
changes. This follows the
hanging get pattern. Any
errors are considered fatal and will result in the channel being closed.
Request
<EMPTY>
Response
| Name | Type |
|---|---|
profile |
Profile
|
ENUMS
Profile strict
Type: uint32
Defined in fuchsia.power.profile/profile.fidl
System power profiles that may be returned by [Watcher.Watch].
| Name | Value | Description |
|---|---|---|
IDLE |
1 |
There is no active work in the system. On a system that supports it, the device may be put into a lower-power or suspended state at any time. |
BACKGROUND_ACTIVE |
2 |
Some background activity is occurring that should prevent the system from dropping into a non-running or suspended state (example: downloading an OTA, performing a backup, or CPU-based hotword monitoring). |
USER_ACTIVE |
3 |
The device is providing some user-visible experience such as running an app in the foreground or streaming audio, or has recently received interaction from a user. |