EDN

Embedded Operating Systems – Part 5: Linux memory management and kernel memory

Linux processes are made up of text, data, and BSS static segments; in addition, each process has its own stack (which is created with the fork system call). Heap space for Linux tasks are allocated ...
Design-Reuse

Dynamic Memory Allocation and Fragmentation in C and C++

In C and C++, it can be very convenient to allocate and de-allocate blocks of memory as and when needed. This is certainly standard practice in both languages and almost unavoidable in C++. However, ...
EDN

Embedded Operating Systems – Part 4: Memory management

Editor's Note: Embedded Systems Architecture, 2nd Edition, is a practical and technical guide to understanding the components that make up an embedded system’s architecture. Offering detailed ...
Linux Journal

Kernel Korner - AEM: a Scalable and Native Event Mechanism for Linux

In a previous article [“An Event Mechanism for Linux”, LJ, July 2003], we introduced the necessity for Linux to adopt a native and generic event mechanism in the context of telecom. Many existing ...
Embedded

Device drivers in user space

Here are the benefits and some caveats to running data-path applications in the user space. Discussed is Linux's UIO framework. Traditionally, packet-processing or data-path applications in Linux have ...