mirror of
https://github.com/python/cpython.git
synced 2026-06-22 19:12:50 -04:00
Pablo Galindo Salgado
661df25692
Use exact remote reads for interpreter state, thread state, and interpreter frame structs instead of pulling full remote pages into the profiler page cache. This matches the core change from python/cpython#149585. The profiler clears the page cache between samples, so live entries are always packed at the front. Track the live count and only clear/search that prefix instead of scanning all 1024 slots on the hot path. Use the frame cache to predict the next thread state and top frame address, then batch interpreter/thread/frame reads with process_vm_readv when profiling a Linux target. Reuse prefetched frame buffers in the frame walker when the prediction is valid. Cache the last FrameInfo tuple per code object/instruction offset, reuse cached thread id objects, and append cached parent frames directly on full frame-cache hits. This cuts Python allocation churn in the steady-state profiler path.
This directory contains a number of Python programs that are useful
while building or extending Python.
build Automatically generated directory by the build system
contain build artifacts and intermediate files.
buildbot Batchfiles for running on Windows buildbot workers.
c-analyzer Tools to check no new global variables have been added.
cases_generator Tooling to generate interpreters.
clinic A preprocessor for CPython C files in order to automate
the boilerplate involved with writing argument parsing
code for "builtins".
freeze Create a stand-alone executable from a Python program.
ftscalingbench Benchmarks for free-threading and finding bottlenecks.
gdb Python code to be run inside gdb, to make it easier to
debug Python itself (by David Malcolm).
i18n Tools for internationalization. pygettext.py
parses Python source code and generates .pot files,
and msgfmt.py generates a binary message catalog
from a catalog in text format.
importbench A set of micro-benchmarks for various import scenarios.
inspection Tooling for PEP-678 "Safe external debugger interface for CPython".
jit Tooling for building the JIT.
lockbench Benchmarks for PyMutex and critical sections.
msi Support for packaging Python as an MSI package on Windows.
nuget Files for the NuGet package manager for .NET.
patchcheck Tools for checking and applying patches to the Python source code
and verifying the integrity of patch files.
peg_generator PEG-based parser generator (pegen) used for new parser.
pixi-packages Pixi package definitions for downstream from-source builds.
scripts A number of useful single-file programs, e.g. run_tests.py
which runs the Python test suite.
ssl Scripts to generate ssl_data.h from OpenSSL sources, and run
tests against multiple installations of OpenSSL and LibreSSL.
tsan Utilities for building CPython with thread-sanitizer.
unicode Tools for generating unicodedata and codecs from unicode.org
and other mapping files (by Fredrik Lundh, Marc-Andre Lemburg
and Martin von Loewis).
unittestgui A Tkinter based GUI test runner for unittest, with test
discovery.
wasm Config and helpers to facilitate cross compilation of CPython
to WebAssembly (WASM).
Note: The pynche color editor has moved to https://gitlab.com/warsaw/pynche