mirror of https://github.com/python/cpython
df3173d28e
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. |
||
---|---|---|
.. | ||
build | ||
buildbot | ||
c-analyzer | ||
cases_generator | ||
ccbench | ||
clinic | ||
freeze | ||
gdb | ||
i18n | ||
importbench | ||
iobench | ||
msi | ||
nuget | ||
patchcheck | ||
peg_generator | ||
scripts | ||
ssl | ||
stringbench | ||
tz | ||
unicode | ||
unittestgui | ||
wasm | ||
README |
README
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. ccbench A Python threads-based concurrency benchmark. (*) 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. 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. iobench Benchmark for the new Python I/O system. (*) 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. scripts A number of useful single-file programs, e.g. tabnanny.py by Tim Peters, which checks for inconsistent mixing of tabs and spaces, and 2to3, which converts Python 2 code to Python 3 code. ssl Scripts to generate ssl_data.h from OpenSSL sources, and run tests against multiple installations of OpenSSL and LibreSSL. stringbench A suite of micro-benchmarks for various operations on strings (both 8-bit and unicode). (*) tz A script to dump timezone from /usr/share/zoneinfo. 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). (*) A generic benchmark suite is maintained separately at https://github.com/python/performance Note: The pynche color editor has moved to https://gitlab.com/warsaw/pynche