diff options
| author | Eric Snow <ericsnowcurrently@gmail.com> | 2023-04-24 23:23:57 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-04-24 23:23:57 (GMT) |
| commit | df3173d28ef25a0f97d2cca8cf4e64e062a08d06 (patch) | |
| tree | f2b6f378f81ceee48a9e710154b9d6c4b0f959a2 /Lib/test/test_threading.py | |
| parent | 01be52e42eac468b6511b56ee60cd1b99baf3848 (diff) | |
| download | cpython-df3173d28ef25a0f97d2cca8cf4e64e062a08d06.zip cpython-df3173d28ef25a0f97d2cca8cf4e64e062a08d06.tar.gz cpython-df3173d28ef25a0f97d2cca8cf4e64e062a08d06.tar.bz2 | |
gh-101659: Isolate "obmalloc" State to Each Interpreter (gh-101660)
This is strictly about moving the "obmalloc" runtime state from
`_PyRuntimeState` to `PyInterpreterState`. Doing so improves isolation
between interpreters, specifically most of the memory (incl. objects)
allocated for each interpreter's use. This is important for a
per-interpreter GIL, but such isolation is valuable even without it.
FWIW, a per-interpreter obmalloc is the proverbial
canary-in-the-coalmine when it comes to the isolation of objects between
interpreters. Any object that leaks (unintentionally) to another
interpreter is highly likely to cause a crash (on debug builds at
least). That's a useful thing to know, relative to interpreter
isolation.
Diffstat (limited to 'Lib/test/test_threading.py')
| -rw-r--r-- | Lib/test/test_threading.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py index a39a267..fdd74c3 100644 --- a/Lib/test/test_threading.py +++ b/Lib/test/test_threading.py @@ -1343,6 +1343,7 @@ class SubinterpThreadingTests(BaseTestCase): import test.support test.support.run_in_subinterp_with_config( {subinterp_code!r}, + use_main_obmalloc=True, allow_fork=True, allow_exec=True, allow_threads={allowed}, |