Contributors

The Memento Contributors are Euresys kernel drivers and Euresys or third-party user space applications embedding Memento Traces at particular code locations.

A Memento Trace is a non-blocking and lightweight software macro that, upon execution, builds up a message and pushes it into the Memento Ring.

Coaxlink Driver & Library

The Coaxlink Driver software package is a major message contributor. For instance, Coaxlink Driver 4.7 includes ~1,000 distinct instances of Memento Traces!

All the Coaxlink products implement Memento-in-hardware. This feature allows hardware events to be logged in Memento with an accurate time attribute.

MultiCam Driver & Libraries

The kernel-mode drivers for Grablink Base, Grablink DualBase, Grablink Full, and Grablink Full XR products as well as the MultiCam and clseremc libraries can also contribute to Memento.

User Application

A user application may include Memento Traces capable of generating messages having a custom content and two attributes: kind and level.

Any severity level can be assigned to the level attribute.

Sixteen (16) distinct values are available for the kind attribute:user0, … user9, … userA, … userF.

Note: The value user is kept for backward capability; it is equivalent to user0.

EGrabber

The EGrabber API layer generates Memento Traces with the Egrabber kind attribute.

Memento Application

The Memento Application also acts as a message contributor since it may inject "UTC Time" messages.