An Event Mechanism for Linux

Telecom applications have extraordinary requirements for low latency and high complexity. An asynchronous event mechanism can be the basis of meeting them.

An event-based mechanism provides a new programming model that offers software developers unique and powerful support for asynchronous execution of processes. Of course, it radically differs from the sequential programming styles we are used to but offers a design framework better structured for software development. It also simplifies the integration and the interoperability of complex software components.

The strength of such a mechanism is its ability to combine synchronous code and asynchronous code in the same application—or even mix these two types of models within the same code routine. With this hybrid approach, it is possible to take advantage of their respective capabilities depending on the situation. This model is especially favorable for the development of secure software and for the long-term maintenance of mission-critical applications.

In a future article, we will show how AEM has been implemented to provide this support in the Linux kernel and how to use it for software development.


The Open Systems Lab for reviewing and approving the publication of this article, Laurent Marchand at Ericsson Research Canada for useful comments and Philippe Meloche, a student at Sherbrooke University.


Frederic Rossi is a researcher at the Open Systems Lab at Ericsson Research, Corporate Unit, in Montréal, Canada. He is involved in research activities leading to designing kernel components for the advancement of carrier-class operating systems. He can be reached by e-mail at


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