feat(profiling): stack_v2 supports CPython 3.13 (#12672)

## Checklist
- [x] PR author has checked that all the criteria below are met
- The PR description includes an overview of the change
- The PR description articulates the motivation for the change
- The change includes tests OR the PR description describes a testing
strategy
- The PR description notes risks associated with the change, if any
- Newly-added code is easy to change
- The change follows the [library release note
guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html)
- The change includes or references documentation updates if necessary
- Backport labels are set (if
[applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting))

## Reviewer Checklist
- [x] Reviewer has checked that all the criteria below are met 
- Title is accurate
- All changes are related to the pull request's stated goal
- Avoids breaking
[API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces)
changes
- Testing strategy adequately addresses listed risks
- Newly-added code is easy to change
- Release note makes sense to a user of the library
- If necessary, author has acknowledged and discussed the performance
implications of this PR as reported in the benchmarks PR comment
- Backport labels are set in a manner that is consistent with the
[release branch maintenance
policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)

Author: taegyunkim

.github/workflows/profiling-native.yml

@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-24.04]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
         sanitizer: ["safety", "thread", "valgrind"]
 
     steps:

.riot/requirements/955b213.txt

@@ -0,0 +1,33 @@
+#
+# This file is autogenerated by pip-compile with Python 3.13
+# by the following command:
+#
+#    pip-compile --allow-unsafe --no-annotate .riot/requirements/955b213.in
+#
+attrs==25.1.0
+coverage[toml]==7.6.12
+gevent==24.11.1
+greenlet==3.1.1
+gunicorn[gevent]==23.0.0
+hypothesis==6.45.0
+iniconfig==2.0.0
+lz4==4.4.3
+mock==5.2.0
+opentracing==2.4.0
+packaging==24.2
+pluggy==1.5.0
+py-cpuinfo==8.0.0
+pytest==8.3.5
+pytest-asyncio==0.21.1
+pytest-benchmark==5.1.0
+pytest-cov==6.0.0
+pytest-cpp==2.6.0
+pytest-mock==3.14.0
+pytest-randomly==3.16.0
+sortedcontainers==2.4.0
+uwsgi==2.0.28
+zope-event==5.0
+zope-interface==7.2
+
+# The following packages are considered to be unsafe in a requirements file:
+setuptools==75.8.2

.riot/requirements/cb9a5da.txt

@@ -0,0 +1,27 @@
+#
+# This file is autogenerated by pip-compile with Python 3.13
+# by the following command:
+#
+#    pip-compile --allow-unsafe --no-annotate .riot/requirements/cb9a5da.in
+#
+attrs==25.1.0
+coverage[toml]==7.6.12
+gunicorn==23.0.0
+hypothesis==6.45.0
+iniconfig==2.0.0
+lz4==4.4.3
+mock==5.2.0
+opentracing==2.4.0
+packaging==24.2
+pluggy==1.5.0
+protobuf==4.22.0
+py-cpuinfo==8.0.0
+pytest==8.3.5
+pytest-asyncio==0.21.1
+pytest-benchmark==5.1.0
+pytest-cov==6.0.0
+pytest-cpp==2.6.0
+pytest-mock==3.14.0
+pytest-randomly==3.16.0
+sortedcontainers==2.4.0
+uwsgi==2.0.28

.riot/requirements/d449a90.txt

@@ -0,0 +1,27 @@
+#
+# This file is autogenerated by pip-compile with Python 3.13
+# by the following command:
+#
+#    pip-compile --allow-unsafe --no-annotate .riot/requirements/d449a90.in
+#
+attrs==25.1.0
+coverage[toml]==7.6.12
+gunicorn==23.0.0
+hypothesis==6.45.0
+iniconfig==2.0.0
+lz4==4.4.3
+mock==5.2.0
+opentracing==2.4.0
+packaging==24.2
+pluggy==1.5.0
+protobuf==6.30.0
+py-cpuinfo==8.0.0
+pytest==8.3.5
+pytest-asyncio==0.21.1
+pytest-benchmark==5.1.0
+pytest-cov==6.0.0
+pytest-cpp==2.6.0
+pytest-mock==3.14.0
+pytest-randomly==3.16.0
+sortedcontainers==2.4.0
+uwsgi==2.0.28

releasenotes/notes/profiling-3.13-e62c18bff5de1218.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    profiling: Stack v2 supports CPython 3.13.
+

riotfile.py

@@ -2926,28 +2926,9 @@ def select_pys(min_version: str = MIN_PYTHON_VERSION, max_version: str = MAX_PYT
                         ),
                     ],
                 ),
-                # Python 3.11
-                Venv(
-                    pys="3.11",
-                    pkgs={"uwsgi": latest},
-                    venvs=[
-                        Venv(
-                            pkgs={
-                                "protobuf": ["==4.22.0", latest],
-                            },
-                        ),
-                        # Gevent
-                        Venv(
-                            env={
-                                "DD_PROFILE_TEST_GEVENT": "1",
-                            },
-                            pkgs={"gunicorn[gevent]": latest, "gevent": latest},
-                        ),
-                    ],
-                ),
-                # Python 3.12
+                # Python >= 3.11
                 Venv(
-                    pys="3.12",
+                    pys=select_pys("3.11", "3.13"),
                     pkgs={"uwsgi": latest},
                     venvs=[
                         Venv(

setup.py

@@ -666,14 +666,13 @@ def get_exts_for(name):
             )
         )
 
-        if sys.version_info < (3, 13):
-            ext_modules.append(
-                CMakeExtension(
-                    "ddtrace.internal.datadog.profiling.stack_v2._stack_v2",
-                    source_dir=STACK_V2_DIR,
-                    optional=False,
-                ),
-            )
+        ext_modules.append(
+            CMakeExtension(
+                "ddtrace.internal.datadog.profiling.stack_v2._stack_v2",
+                source_dir=STACK_V2_DIR,
+                optional=False,
+            ),
+        )
 
 else:
     ext_modules = []

tests/profiling_v2/collector/test_memalloc.py

@@ -1,5 +1,6 @@
 import inspect
 import os
+import sys
 import threading
 
 import pytest
@@ -9,6 +10,9 @@
 from tests.profiling.collector import pprof_utils
 
 
+PY_313_OR_ABOVE = sys.version_info[:2] >= (3, 13)
+
+
 def _allocate_1k():
     return [object() for _ in range(1000)]
 
@@ -140,6 +144,7 @@ def test_heap_profiler_large_heap_overhead():
     # Un-skip this test if/when we improve the worst-case performance of the
     # heap profiler for large heaps
     from ddtrace.profiling import Profiler
+    from tests.profiling_v2.collector.test_memalloc import one
 
     p = Profiler()
     p.start()
@@ -149,10 +154,10 @@ def test_heap_profiler_large_heap_overhead():
 
     junk = []
     for i in range(count):
-        b1 = bytearray(thing_size)
-        b2 = bytearray(2 * thing_size)
-        b3 = bytearray(3 * thing_size)
-        b4 = bytearray(4 * thing_size)
+        b1 = one(thing_size)
+        b2 = one(2 * thing_size)
+        b3 = one(3 * thing_size)
+        b4 = one(4 * thing_size)
         t = (b1, b2, b3, b4)
         junk.append(t)
 
@@ -164,20 +169,22 @@ def test_heap_profiler_large_heap_overhead():
 # one, two, three, and four exist to give us distinct things
 # we can find in the profile without depending on something
 # like the line number at which an allocation happens
+# Python 3.13 changed bytearray to use an allocation domain that we don't
+# currently profile, so we use None instead of bytearray to test.
 def one(size):
-    return bytearray(size)
+    return (None,) * size if PY_313_OR_ABOVE else bytearray(size)
 
 
 def two(size):
-    return bytearray(size)
+    return (None,) * size if PY_313_OR_ABOVE else bytearray(size)
 
 
 def three(size):
-    return bytearray(size)
+    return (None,) * size if PY_313_OR_ABOVE else bytearray(size)
 
 
 def four(size):
-    return bytearray(size)
+    return (None,) * size if PY_313_OR_ABOVE else bytearray(size)
 
 
 class HeapInfo: