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specs: add epoch module semantic baseline#5150

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specs: add epoch module semantic baseline#5150
Alan-Jowett wants to merge 1 commit intomicrosoft:mainfrom
Alan-Jowett:alanjo/specs-epoch-baseline

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@Alan-Jowett Alan-Jowett commented Mar 30, 2026

Summary

Extract structured specifications for the ebpf_epoch module (epoch-based memory reclamation) from the existing codebase using the spec-extraction workflow.

Deliverables

File Content
specs/epoch/requirements.md 57 requirements across 9 categories with acceptance criteria and source citations
specs/epoch/design.md Architecture, 3-phase epoch computation protocol, tradeoff analysis, security considerations
specs/epoch/validation.md 6 existing tests mapped, 11 proposed test cases, 10 coverage gaps with risk prioritization
specs/epoch/audit.md Traceability audit (7 findings, critical items resolved)

Source Files Analyzed

  • libs/runtime/ebpf_epoch.h — public API (13 functions)
  • libs/runtime/ebpf_epoch.c — implementation (~1060 lines)
  • libs/runtime/unit/platform_unit_test.cpp — epoch-related tests (6 test cases)

Methodology

Followed the workflows/spec-extraction-workflow.md process:

  1. Phase 1: Repository scan and scope identification
  2. Phase 2: Parallel extraction of requirements, design, and validation specs
  3. Phase 3: Human clarification (user approved draft scope)
  4. Phase 4: Adversarial traceability audit — found 7 findings, applied critical fixes
  5. Phase 5: Human approval
  6. Phase 6: Commit and PR

Key Findings from Audit

  • 85% API coverage by existing tests (11/13 functions)
  • 10 coverage gaps identified with proposed test cases
  • No critical semantic conflicts between documents
  • Traceability alignment corrections applied

Non-Goals

  • No code changes — specs only
  • No refactoring or improvement recommendations
  • No new tests implemented (proposed tests documented for future work)

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This pull request isn't linked to any GitHub issue. Please reference an issue with a keyword such as Fixes #123, Closes #456, etc., so the work can be tracked.

Extract structured specifications for the ebpf_epoch module from the
existing codebase using the spec-extraction workflow.

Deliverables:
- specs/epoch/requirements.md: 57 requirements across 9 categories
  (lifecycle, epoch critical section, memory management, epoch
  computation, work items, synchronization, diagnostics, thread
  safety, robustness) with acceptance criteria and source citations.
- specs/epoch/design.md: Architecture, 3-phase epoch computation
  protocol, per-CPU state management, epoch skew protection,
  tradeoff analysis, and security considerations.
- specs/epoch/validation.md: 6 existing tests mapped to requirements,
  11 proposed test cases, 10 coverage gaps identified with risk
  prioritization.
- specs/epoch/audit.md: Traceability audit with 7 findings (all
  critical items resolved). Verdict: REVISE→applied corrections.

Source files analyzed:
- libs/runtime/ebpf_epoch.h
- libs/runtime/ebpf_epoch.c
- libs/runtime/unit/platform_unit_test.cpp

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Signed-off-by: Alan Jowett <alan.jowett@microsoft.com>
@Alan-Jowett Alan-Jowett force-pushed the alanjo/specs-epoch-baseline branch from a4a035e to ddb6e40 Compare March 30, 2026 20:10
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This pull request isn't linked to any GitHub issue. Please reference an issue with a keyword such as Fixes #123, Closes #456, etc., so the work can be tracked.

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