Diagnosing Qt Cross-Thread Signal/Slot Delivery Failures
A diagnostic guide for Qt signals that leave a worker thread but whose slots never run, run late, or run on the wrong thread — with ordered checks and fixes tied to each finding.
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qtShared Mutable State in Rust with Arc<Mutex<T>>: A Practical Guide
Arc<Mutex<T>> is Rust's idiomatic answer to shared mutable state across threads. Here's how the guard-and-poisoning mechanics work, a runnable counter example, and when atomics, RwLock, or channels are the better call.
rustMarshalling UI Updates in Delphi: Synchronize vs Queue in Practice
When a Delphi worker thread touches UI controls you’ll get intermittent crashes. Use TThread.Queue for fire‑and‑forget updates and reserve TThread.Synchronize for blocking calls. This guide shows a concrete example, trade‑offs, and how to verify the RTL behaviour.
delphiCounting Semaphores: Throttle Threads, Avoid Deadlocks, and Tune Fairness
When multiple threads race for a limited resource, a counting semaphore can enforce a safe cap. This post walks through a producer‑consumer example, shows how to configure fairness, and highlights pitfalls like permit leaks.
Replacing Mutexes with C11 Atomics for High-Frequency Counters
Learn how to replace heavy mutexes with C11 atomic types to build high-performance, thread-safe counters using lock-free synchronization and memory ordering.
Handling I/O-Bound Work in VB.NET with Async and Await
Learn how to implement async-await in VB.NET to prevent UI freezes and deadlocks. This guide covers Task management, ConfigureAwait(False), and non-blocking I/O patterns.
Preventing UI Freezes and Thread Starvation with C# Async/Await
Learn how to implement the async/await pattern in C# to prevent UI freezes and improve server throughput by releasing threads during I/O operations.
csharpUsing Qt Queued Connections for Safe Cross‑Thread GUI Updates
Learn how to keep the GUI responsive while worker threads run long tasks by using Qt::QueuedConnection, with design considerations, safety checks, and failure modes.
Decoupling Qt Components: When to Use Queued Connections for Thread Safety
Learn how to use Qt's Signal and Slot mechanism to safely communicate between worker threads and the GUI thread using Queued Connections to prevent crashes.