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| author | Mark Shannon <mark@hotpy.org> | 2021-07-26 10:22:16 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-07-26 10:22:16 (GMT) |
| commit | ae0a2b756255629140efcbe57fc2e714f0267aa3 (patch) | |
| tree | 8710e8c7a398c9ec0add227fab607f367242a7e5 /Misc/NEWS.d | |
| parent | 0363a4014d90df17a29042de008ef0b659f92505 (diff) | |
| download | cpython-ae0a2b756255629140efcbe57fc2e714f0267aa3.zip cpython-ae0a2b756255629140efcbe57fc2e714f0267aa3.tar.gz cpython-ae0a2b756255629140efcbe57fc2e714f0267aa3.tar.bz2 | |
bpo-44590: Lazily allocate frame objects (GH-27077)
* Convert "specials" array to InterpreterFrame struct, adding f_lasti, f_state and other non-debug FrameObject fields to it.
* Refactor, calls pushing the call to the interpreter upward toward _PyEval_Vector.
* Compute f_back when on thread stack, only filling in value when frame object outlives stack invocation.
* Move ownership of InterpreterFrame in generator from frame object to generator object.
* Do not create frame objects for Python calls.
* Do not create frame objects for generators.
Diffstat (limited to 'Misc/NEWS.d')
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2021-07-09-12-08-17.bpo-44590.a2ntVX.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2021-07-09-12-08-17.bpo-44590.a2ntVX.rst b/Misc/NEWS.d/next/Core and Builtins/2021-07-09-12-08-17.bpo-44590.a2ntVX.rst new file mode 100644 index 0000000..ed4d969 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2021-07-09-12-08-17.bpo-44590.a2ntVX.rst @@ -0,0 +1,5 @@ +All necessary data for executing a Python function (local variables, stack, +etc) is now kept in a per-thread stack. Frame objects are lazily allocated +on demand. This increases performance by about 7% on the standard benchmark +suite. Introspection and debugging are unaffected as frame objects are +always available when needed. Patch by Mark Shannon. |