class ShutdownWatcherRegister

Defined at line 4388 of file fidling/gen/sdk/fidl/fuchsia.hardware.power.statecontrol/fuchsia.hardware.power.statecontrol/hlcpp/fuchsia/hardware/power/statecontrol/cpp/fidl.h

Allows components to register a callback that will be executed when reboots or shutdowns occur.

The main purpose of this protocol is to be able to track shutdown reasons and provide signals

to critical platform components that cannot rely on Component Framework's orderly shutdown.

Before relying on this protocol, consider using Component Framework's orderly shutdown

pattern or component lifecycle hooks.

Public Members

static const char[] Name_

Public Methods

void ~ShutdownWatcherRegister ()

void RegisterWatcher (::fidl::InterfaceHandle< ::fuchsia::hardware::power::statecontrol::ShutdownWatcher> watcher, RegisterWatcherCallback callback)

Registers a watcher to be notified when the `Admin.Shutdown` method is called.

Once the watcher has been successfully registered with the server, then

the request will be completed and the ShutdownWatcherRegister

channel will be left open (though a client is free to close it at this

time).

If there is an error in registering the watcher, then the

ShutdownWatcherRegister channel will be closed without completing

the request.

The provided `watcher` channel will be used at most once to notify the

watcher of an impending shutdown and allow it the chance to respond.

Watchers can unregister by closing their `ShutdownWatcher` channel.

void RegisterTerminalStateWatcher (::fidl::InterfaceHandle< ::fuchsia::hardware::power::statecontrol::TerminalStateWatcher> watcher, RegisterTerminalStateWatcherCallback callback)

Registers a watcher to be notified when the system begins a transition to a terminal state

regardless of the trigger.

The [`TerminalStateWatcher`] is notified for all reboots, power-offs, and kernel-initiated

shutdowns. It does not provide reasons or options.