I think, therefore I am; recording insights from daily life and technology.
This article analyzes nine lock-free data structures in Android 17, including MPSC/SPSC queues, triple buffers, ring buffers, and a lock-free MessageQueue, detailing their mechanisms, memory layouts, and use cases in audio, graphics, Binder IPC, and Perfetto tracing.
Android 17 enhances Binder observability with a lock-free SPSC queue, boot-stable sharding, exponential latency histograms, and CPU sampling in the user-space Observer V2, while introducing a kernel Netlink channel for asynchronous, zero-overhead IPC error events like frozen transactions and spam detection.
This article compiles first-principles design philosophies from ten software engineering leaders, including LLVM creator Chris Lattner and Perfetto expert Lalit Maganti, showing how to break problems to fundamental constraints rather than copying existing solutions.
The article explains that complex systems are multivariable nonlinear systems where changes have first-, second-, and third-order consequences, using software examples like garbage collection modifications to illustrate why engineers must map cascading impacts before optimizing.
The author demonstrates using Claude Code agent to automatically download Android 16 and 17 source code via repo init --reference for space efficiency, then generate an HTML diff report comparing simpleperf repository changes with side-by-side visualization and feature summaries, replacing manual Beyond Compare workflows.
The article proposes using invariants—conceptual, connection, runtime, and class-level constraints—to formalize software structure, enabling correct-by-construction code generation by AI agents instead of relying on post-hoc verification.
Honor's MUSCHED introduces a VIP scheduling class between real-time and CFS via eBPF's sched-ext, using scenario-aware thread annotation and cross-process priority propagation to reduce touch-to-display latency by 31% and eliminate 92% of frame drops on 120Hz mobile devices.
The article explores how software engineering research is shifting from human-centered to agent-centered development (Harness Engineering), identifying key research questions around software complexity characterization, machine-readable knowledge representation, agent team collaboration, and adapting traditional SE theories, while advising against investing in generic agent frameworks already dominated by large companies.
The reviewer argues that software design is fundamentally conceptual modeling, where naming concepts constitutes abstraction—a highly difficult process—and praises the book 'Semantic Software Design' for focusing on this core challenge.
The article explores how software engineering research focus is shifting, requiring a redesign of roles among humans, AI agents, and software, and advocates analyzing spatial structure and evolutionary time from both developer and agent perspectives, illustrated with diagrams created manually and expanded via GPT and Gemini.
