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Shaokai Lin

PROFILE

Shaokai Lin

Shaokai worked on core scheduling and code generation features for the lf-lang/lingua-franca and lf-lang/reactor-c repositories, focusing on distributed and real-time systems. He simplified scheduler selection logic by removing deadline-based policies, making event handling more predictable and maintainable. Using C and Java, he enhanced federated code generation to prevent infinite loops and stack overflows, introducing recursive delay calculations and robust test coverage. Shaokai also improved event scheduling semantics and type safety in reactor-c, refining policy handling for same-tag events. His work emphasized code refactoring, concurrency management, and testing, resulting in cleaner, more reliable infrastructure for embedded and distributed workflows.

Overall Statistics

Feature vs Bugs

62%Features

Repository Contributions

25Total
Bugs
5
Commits
25
Features
8
Lines of code
555
Activity Months4

Work History

May 2025

15 Commits • 4 Features

May 1, 2025

May 2025 monthly summary focusing on key platform stability and policy updates across lingua-franca and reactor-c, with emphasis on business value, test coverage, and robustness.

April 2025

6 Commits • 3 Features

Apr 1, 2025

April 2025 monthly summary for lf-lang development. Focused on delivering robust features, improving scheduling reliability, and enhancing maintainability across two repositories (lf-lang/lingua-franca and lf-lang/reactor-c).

January 2025

3 Commits • 1 Features

Jan 1, 2025

January 2025 monthly summary for lf-lang/lingua-franca. Delivered robust federated code-generation improvements and strengthened test coverage to improve reliability in distributed workflows. Key outcomes include cycle-free min-delay calculation, backward tracing of physical actions, and safeguards against stack overflows during compile-time evaluation.

November 2024

1 Commits

Nov 1, 2024

November 2024: Delivered Scheduler Selection Simplification in lf-lang/lingua-franca by removing the deadline-based GEDF_NP logic, resulting in a simpler and more predictable scheduler decision path. Eliminated pickScheduler() and its helper hasDeadlines() in CGenerator.java to reduce dead code and maintenance burden, enabling easier future policy experimentation. Core commit: 9bd8dacdba9de15f22dd784e4b9077f01c2625f2. This work improves scheduling determinism, reduces risk of deadline-driven edge cases, and accelerates future enhancements.

Activity

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Quality Metrics

Correctness90.4%
Maintainability90.4%
Architecture86.4%
Performance84.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

CGradleJavaJavaScriptLFPython

Technical Skills

Build Tool ConfigurationC ProgrammingCode FormattingCode GenerationCode RefactoringCode ReviewCompiler DevelopmentConcurrencyConcurrency ControlConcurrency ManagementDistributed SystemsDocumentationEmbedded SystemsEvent SchedulingFederated Systems

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

lf-lang/lingua-franca

Nov 2024 May 2025
4 Months active

Languages Used

JavaCLFGradleJavaScriptPython

Technical Skills

Code RefactoringCompiler DevelopmentCode GenerationConcurrencyDistributed SystemsEmbedded Systems

lf-lang/reactor-c

Apr 2025 May 2025
2 Months active

Languages Used

C

Technical Skills

Embedded SystemsEvent SchedulingReal-time SystemsC ProgrammingCode FormattingCode Review