apache/mynewt-core
Nov 2024 – Aug 2025
4 Months active
Languages Used
C
Technical Skills
CryptographyEmbedded SystemsMemory ManagementNetwork ProgrammingC ProgrammingAssembly Language
Mariusz Skamra
PROFILE
Mariusz Skamra
Mariusz Skamra contributed to the apache/mynewt-core repository by focusing on core system stability and maintainability across embedded systems. Over four months, he delivered a kernel macro to simplify mbuf pointer derivation, enhancing memory management for packet handling in C. He addressed build reliability by patching TinyCrypt to suppress spurious compiler warnings and implemented a memset inline assembly fix for GCC 15, ensuring compatibility and smoother CI workflows. Additionally, he resolved a memory leak in native socket operations by refactoring stack allocation, improving network programming robustness. His work demonstrated depth in C programming, compiler optimization, and embedded systems engineering.
Overall Statistics
Feature vs Bugs
25%Features
Repository Contributions
4Total
Bugs
3
Commits
4
Features
1
Lines of code
25
Activity Months4
Your Network
22 people
Work History
August 2025
1 Commits
Aug 1, 2025August 2025 monthly summary for Apache Mynewt Core focusing on stabilizing builds for GCC 15 by implementing a memset inline-assembly compatibility fix in baselibc. The patch forces specific parameters into low registers to avoid conflicts with CPSR updates, restoring successful builds and reducing CI churn. This work enables continued platform and feature development on apache/mynewt-core under GCC 15 toolchains, improving developer productivity and release readiness.
1 Commits
Aug 1, 2025August 2025 monthly summary for Apache Mynewt Core focusing on stabilizing builds for GCC 15 by implementing a memset inline-assembly compatibility fix in baselibc. The patch forces specific parameters into low registers to avoid conflicts with CPSR updates, restoring successful builds and reducing CI churn. This work enables continued platform and feature development on apache/mynewt-core under GCC 15 toolchains, improving developer productivity and release readiness.
August 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for apache/mynewt-core. Key feature delivered: OS_MBUF_USRHDR_TO_MBUF macro added to derive the mbuf pointer from a user header, simplifying and stabilizing mbuf handling in the kernel's mbuf subsystem. Major bugs fixed: none this month. Overall impact: improves reliability and maintainability of memory management for packet handling and provides a safer, direct access path to mbuf structures, enabling downstream features with reduced risk of pointer errors. Technologies/skills demonstrated: C macro design, kernel memory management, and careful change management with a focused commit (ad165a5f174338c5dee339b5f31ab01718696006).
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for apache/mynewt-core. Key feature delivered: OS_MBUF_USRHDR_TO_MBUF macro added to derive the mbuf pointer from a user header, simplifying and stabilizing mbuf handling in the kernel's mbuf subsystem. Major bugs fixed: none this month. Overall impact: improves reliability and maintainability of memory management for packet handling and provides a safer, direct access path to mbuf structures, enabling downstream features with reduced risk of pointer errors. Technologies/skills demonstrated: C macro design, kernel memory management, and careful change management with a focused commit (ad165a5f174338c5dee339b5f31ab01718696006).
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for apache/mynewt-core focused on stabilizing native socket operations by eliminating a memory leak via static stack allocation in the native socket task. This work reduces heap pressure and address Valgrind-detected leaks, improving reliability for network I/O paths and overall system stability. No user-facing features were shipped this month; the emphasis was on robustness, maintainability, and long-term performance benefits.
1 Commits
Feb 1, 2025February 2025 monthly summary for apache/mynewt-core focused on stabilizing native socket operations by eliminating a memory leak via static stack allocation in the native socket task. This work reduces heap pressure and address Valgrind-detected leaks, improving reliability for network I/O paths and overall system stability. No user-facing features were shipped this month; the emphasis was on robustness, maintainability, and long-term performance benefits.
February 2025
November 2024
1 Commits
Nov 1, 2024November 2024 (apache/mynewt-core): Focused on build stability and reliability in core cryptographic components. No new user-facing features shipped. Primary effort centered on addressing a compilation-time warning in TinyCrypt to ensure successful builds, enabling smoother CI and downstream development.
November 2024
1 Commits
Nov 1, 2024November 2024 (apache/mynewt-core): Focused on build stability and reliability in core cryptographic components. No new user-facing features shipped. Primary effort centered on addressing a compilation-time warning in TinyCrypt to ensure successful builds, enabling smoother CI and downstream development.
Activity
Loading activity data...
Quality Metrics
Correctness95.0%
Maintainability95.0%
Architecture90.0%
Performance95.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
Assembly LanguageC ProgrammingCompiler OptimizationCryptographyEmbedded SystemsMemory ManagementNetwork Programming
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline