Capture thread backtraces from live processes using LLDB and GDB.
npx skills add https://github.com/regenrek/agent-skills --skill debug-lldb
Please help me install this Agent Skill. Skill: debug-lldb Source: https://github.com/regenrek/agent-skills/tree/main/skills/debug-lldb Command: npx skills add https://github.com/regenrek/agent-skills --skill debug-lldb
Quickly diagnose unresponsive applications by capturing and analyzing thread backtraces from live processes across macOS, Linux, and Windows.
Run the guided workflow: identify the target process PID and execute the provided script to capture stack traces, then consult references/triage.md for interpretation.
High-intent search queries and answers about installing and using this skill.
Capture thread backtraces from a live process by running the bundled collect_stacks.sh script against the target PID, which gathers multiple stack samples to triage unresponsive application stalls. It works across macOS using LLDB and Linux or Windows using GDB.
Triage a busy loop or deadlock by collecting repeated thread backtrace samples and comparing them against bundled reference patterns in triage.md to classify the stall type. Repeated samples reveal threads stuck in identical frames, indicating a blocking operation or active spin.
Yes, you can use LLDB on macOS and GDB on Linux or Windows for the same deterministic troubleshooting workflow. The Skill applies a cross-platform backtrace collection workflow to capture thread stacks from live processes regardless of the operating system.
Identify the thread causing a UI freeze by executing the provided script to capture multiple thread backtrace samples during the stall, then consult the contextual triage guidance to pinpoint the blocking thread responsible for the unresponsive behavior.
No external dependencies are required to collect and analyze live thread backtraces. The Skill bundles the necessary collection script and a references directory with triage patterns, requiring only the native platform debugger like LLDB or GDB installed on the system.
Collect multiple stack samples instead of a single backtrace to distinguish a permanent hang from a temporary stall. Repeated sampling allows you to triage results against reference patterns, revealing whether threads are deadlocked, spinning in a busy loop, or waiting on I/O.
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