Print logs when exception is caught

[akifcorduk]

Previously, exceptions inside the MIP OpenMP region were caught silently and rethrown after the region ended. Now their message is logged when caught while preserving the deferred rethrow.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 6eef0aca-b0d8-40c7-91e1-99f2193c7f61

📥 Commits

Reviewing files that changed from the base of the PR and between 8148a4f and 1d46be1.

📒 Files selected for processing (2)

• cpp/src/pdlp/solve.cu
• cpp/tests/linear_programming/pdlp_test.cu

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📝 Walkthrough

Walkthrough

The change adds typed standard-exception logging and deferred propagation to MIP and concurrent PDLP execution, and extends a PDLP test to verify emitted exception messages.

Changes

Exception handling

Layer / File(s)	Summary
MIP exception handling cpp/src/mip_heuristics/solve.cu	solve_mip logs std::exception messages, captures exceptions for deferred rethrow, and retains catch-all handling for unknown exceptions.
Concurrent PDLP exception handling and validation cpp/src/pdlp/solve.cu, cpp/tests/linear_programming/pdlp_test.cu	Barrier, Dual Simplex, and synchronous PDLP paths log standard exception messages, preserve exception pointers, request concurrent halts, and validate the emitted logs in the exception test.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: bubullzz, chris-maes, hlinsen

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title matches the main change: logging exception details when caught, while keeping deferred rethrow behavior.
Description check	✅ Passed	The description accurately describes the exception-logging change in the MIP OpenMP region and remains related to the PR.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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_{Comment @coderabbitai help to get the list of available commands.}

[aliceb-nv]

Let's also check the lp/ side of the codebase for similar patterns

[github-actions]

CI Test Summary

1 failed · 30 passed · 0 skipped