Crash Manager
The Crash Manager is a service and interface for managing crash data within the Gecko application.
From JavaScript, the service can be accessed via:
let crashManager = Services.crashmanager;
That will give you an instance of CrashManager from CrashManager.sys.mjs.
From there, you can access and manipulate crash data.
The crash manager stores statistical information about crashes as well as detailed information for both browser and content crashes. The crash manager automatically detects new browser crashes at startup by scanning for Crash Events. Content process crash information on the other hand is provided externally.
Crash Pings
The Crash Manager is responsible for sending crash pings when a crash occurs or when a crash event is found. Crash pings are sent using Telemetry pings.
Glean
Crash pings have been migrated to use Glean pings, however the Telemetry pings will still be sent until we are confident that the Glean implementation is robust. The Glean crash ping can be found here.
See bug 1784069 for details.
Lifecycle and Post-Processing
The lifecycle of a crash ping can be viewed at Crash Ping Lifecycle.