chore(profiling): update Python profiling collectors for py3.15

[vlad-scherbich]

← Prev: #18503 | Next → #17624

PROF-14200

Description

Updates the Python profiling collectors for CPython 3.15 compatibility.

Collectors (threading.py, asyncio.py, exception.py, stack.py):

• Guard private asyncio/threading APIs that were removed or moved in 3.15
  (_exception, _task, threading._lock imports gated on version checks)
• _GatheringFuture.__init__ and _wait wrappers: guard current_task() call against
  RuntimeError when invoked outside a running event loop on 3.15+

_asyncio.py (minimal fix here; deep refactor is in #18389):

• Guard get_running_loop() / current_task() calls that 3.15's implementation can sidestep

monitoring.py, asyncs.py: minor 3.15 compatibility guards.

Testing

CI: profile, profile-memalloc, crashtracker venvs on py3.15.

Risks

Low. All changes are version-gated guards; behavior on older Python is unchanged.

Additional Notes

Part of the Python 3.15 support stack. Relates to #17809.

[datadog-prod-us1-5]

 

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⚠️ Warnings

🚦 4 Pipeline jobs failed

Changelog | Validate changelog     

DataDog/apm-reliability/dd-trace-py | build_base_venvs: [3.15]     

DataDog/apm-reliability/dd-trace-py | check-slo-breaches     

View all 4 failed jobs.

ℹ️ Info

No other issues found (see more)

🧪 All tests passed
❄️ No new flaky tests detected

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[pr-commenter]

Benchmarks

Benchmark execution time: 2026-06-08 13:21:24

Comparing candidate commit 163c7da in PR branch vlad/ddtracepy-315-profiling-collectors with baseline commit 6abf4b7 in branch vlad/ddtracepy-315-profiling-native.

Found 0 performance improvements and 5 performance regressions! Performance is the same for 613 metrics, 9 unstable metrics.

scenario:iastaspects-index_aspect

• 🟥 execution_time [+8.899µs; +12.644µs] or [+7.244%; +10.293%]

scenario:iastaspects-stringio_aspect

• 🟥 execution_time [+658.872µs; +719.435µs] or [+16.945%; +18.503%]

scenario:iastaspectsospath-ospathbasename_aspect

• 🟥 execution_time [+100.428µs; +107.418µs] or [+23.471%; +25.105%]

scenario:span-start

• 🟥 execution_time [+1.226ms; +1.362ms] or [+7.784%; +8.649%]

scenario:tracer-small

• 🟥 execution_time [+25.573µs; +28.522µs] or [+7.308%; +8.151%]

[github-actions]

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