Intel® DAL supports sending and receiving events from other trusted applications or native services. To use events, trusted applications must define a special permission in the trusted application manifest to send/receive events. Trusted application events are sent to all instances of the same trusted application but
not to a specific trusted application instance
. In contrast, native events are sent to a specific instance of a trusted application.
The event mechanism can be utilized by Intel DAL services (e.g., timers), but to use them, event permissions have to be included when these services are implemented.
Trusted applications can also send events to host applications using the SendAnyMessage() method.
Trusted applications cannot process commands from the host and process events simultaneously.
Sending too many events will fill up the event queue, resulting in the loss of some of the messages.