---
name: review-resource-leaks-open-afb596502851
description: Open Audit for memory leaks, handle leaks, GDI leaks, and CPU churn
user-invocable: true
disable-model-invocation: true
---
Enter planning mode. Systematically audit the codebase for resource/memory leaks and unnecessary CPU churn. Use maximum parallelism — spawn explore agents for independent areas.

## Known Safe Patterns (Do NOT Flag)

- `gD2D_Res` brush/font cache — intentional lifetime cache, cleaned up on exit
- `static` buffers in hot-path functions — intentional reuse per `ahk-patterns.md`
- Flight recorder ring buffer — pre-allocated, fixed size, overwrites oldest entries
- Stats `.bak` sentinel files — intentional crash-safety pattern

## Validation

After explore agents report back, **validate every finding yourself**. Resource "leaks" are frequently false positives where cleanup happens in a different function, on a timer, or at process exit.

For each candidate:

1. **Cite evidence**: "I verified by reading `file.ahk` lines X–Y" with actual code quoted.
2. **Trace the lifecycle**: Where is the resource created? Where is it supposed to be freed? Is there a cleanup function called on exit/disconnect/error?
3. **Counter-argument**: "What would make this fix unnecessary?" — Is the resource freed at process exit anyway? Is the "leak" actually a cache with bounded size? Does AHK's garbage collector handle this?
4. **Observed vs inferred**: State whether you saw a missing cleanup directly, or inferred it from the absence of a delete call (absence of evidence is not evidence — the cleanup may be elsewhere).
5. **Impact assessment**: Is this a per-paint leak (catastrophic), per-window leak (slow burn), or per-session leak (negligible)?

## Plan Format

Group by severity (per-paint > per-event > per-session > theoretical):

| File | Lines | Resource Type | Leak Description | Impact | Fix |
|------|-------|--------------|-----------------|--------|-----|
| `file.ahk` | 42–58 | D2D Brush | D2D brush created in paint loop, never released | ~60 handles/sec | Use `D2D_GetCachedBrush` or `static` |

For CPU churn findings, use a separate table:

| File | Lines | Pattern | Frequency | Fix |
|------|-------|---------|-----------|-----|
| `file.ahk` | 100–120 | Timer polls every 100ms, no-ops 99% of the time | 10/sec idle | Adaptive interval or event-driven |

Ignore any existing plans — create a fresh one.


---
Source attribution: cwilliams5
Original project: https://github.com/cwilliams5/Alt-Tabby/blob/6e941fe6d8344facc4f24c373f41999ff6da4c04/.claude/skills/review-resource-leaks-open/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2025 Cody Williams

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: cwilliams5
Original project: https://github.com/cwilliams5/Alt-Tabby/blob/6e941fe6d8344facc4f24c373f41999ff6da4c04/.claude/skills/review-resource-leaks-open/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering
Roles: Backend Developer, DevOps / SRE, QA / Test Engineer
Specialties: Backend, Testing
Tools: Ahk
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: a3acf133477df81edfbc0c731a0c7ffa5f42f98a9bb42badd9376668d1d791c9