# Profile Analyzer Implementation Progress
## Overview
Implementing `profile-inspect` - a Rust CLI tool for analyzing V8 CPU and heap profiles.
## Implementation Steps
### Phase 1: Project Setup & Core Types
- [x] Step 1.1: Update Cargo.toml with all dependencies
- [x] Step 1.2: Create src/types/mod.rs - V8 types exports
- [x] Step 1.3: Create src/types/cpu.rs - Raw V8 CPU profile types
- [x] Step 1.4: Create src/types/heap.rs - Raw V8 heap profile types
### Phase 2: Intermediate Representation (IR)
- [x] Step 2.1: Create src/ir/mod.rs - IR exports
- [x] Step 2.2: Create src/ir/frame.rs - Frame IR with FrameKind, FrameCategory
- [x] Step 2.3: Create src/ir/stack.rs - Stack IR
- [x] Step 2.4: Create src/ir/sample.rs - Sample IR + ProfileIR
### Phase 3: Parsing & Classification
- [x] Step 3.1: Create src/classify/mod.rs - Classifier exports
- [x] Step 3.2: Create src/classify/frame_classifier.rs - Frame categorization
- [x] Step 3.3: Create src/parser/mod.rs - Parser exports
- [x] Step 3.4: Create src/parser/cpu_profile.rs - CPU profile → IR
- [x] Step 3.5: Create src/parser/heap_profile.rs - Heap profile → IR
### Phase 4: Source Map Support
- [x] Step 4.1: Create src/sourcemap/mod.rs - Source map exports
- [x] Step 4.2: Create src/sourcemap/resolver.rs - Location resolution
### Phase 5: Analysis Algorithms
- [x] Step 5.1: Create src/analysis/mod.rs - Analysis exports
- [x] Step 5.2: Create src/analysis/cpu_analysis.rs - CPU hot path detection
- [x] Step 5.3: Create src/analysis/heap_analysis.rs - Heap allocation analysis
- [x] Step 5.4: Create src/analysis/diff.rs - Profile comparison
- [x] Step 5.5: Create src/analysis/caller_callee.rs - Call graph attribution
### Phase 6: Output Formatters
- [x] Step 6.1: Create src/output/mod.rs - OutputFormat trait
- [x] Step 6.2: Create src/output/markdown.rs - Markdown formatter
- [x] Step 6.3: Create src/output/text.rs - Plain text formatter
- [x] Step 6.4: Create src/output/json.rs - JSON summary formatter
- [x] Step 6.5: Create src/output/speedscope.rs - Speedscope formatter
- [x] Step 6.6: Create src/output/collapsed.rs - Collapsed stacks formatter
### Phase 7: CLI & Integration
- [x] Step 7.1: Update src/lib.rs - Library exports
- [x] Step 7.2: Update src/main.rs - Full CLI implementation
### Phase 8: Testing & Verification
- [x] Step 8.1: Test with real CPU profile
- [x] Step 8.2: Test with real heap profile
- [x] Step 8.3: Verify all output formats
## Current Status
**Current Step**: ALL PHASES COMPLETE
**Last Updated**: 2026-01-24
## Summary
All 8 phases have been completed successfully:
- Phase 1-4: Core types, IR, parsing, source map support
- Phase 5: Analysis algorithms (CPU, heap, diff, caller/callee)
- Phase 6: Output formatters (markdown, json, speedscope, collapsed, text)
- Phase 7: Full CLI implementation
- Phase 8: Verified with real CPU and heap profiles
## Project Status: COMPLETE ✓
The profile-inspect tool has been fully implemented per IMPLEMENTATION_PLAN.md.
No further work is needed.
Built: Sat 24 Jan 2026 02:20:40 CST
Binary: ./target/release/profile-inspect