Skip to content
main
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
cpython/Python/
Go to file
cpython/Python/

Latest commit

@eduardo-elizondo
eduardo-elizondo gh-84436: Implement Immortal Objects (gh-19474)
ea2c001 Apr 22, 2023
gh-84436: Implement Immortal Objects (gh-19474) 
This is the implementation of PEP683

Motivation:

The PR introduces the ability to immortalize instances in CPython which bypasses reference counting. Tagging objects as immortal allows up to skip certain operations when we know that the object will be around for the entire execution of the runtime.

Note that this by itself will bring a performance regression to the runtime due to the extra reference count checks. However, this brings the ability of having truly immutable objects that are useful in other contexts such as immutable data sharing between sub-interpreters.
ea2c001

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
. .
clinic
 
 
deepfreeze
 
 
frozen_modules
 
 
Python-ast.c
 
 
Python-tokenize.c
 
 
README
 
 
_warnings.c
 
 
adaptive.md
 
 
asdl.c
 
 
asm_trampoline.S
 
 
assemble.c
 
 
ast.c
 
 
ast_opt.c
 
 
ast_unparse.c
 
 
bltinmodule.c
 
 
bootstrap_hash.c
 
 
bytecodes.c
 
 
ceval.c
 
 
ceval_gil.c
 
 
ceval_macros.h
 
 
codecs.c
 
 
compile.c
 
 
condvar.h
 
 
context.c
 
 
dtoa.c
 
 
dup2.c
 
 
dynamic_annotations.c
 
 
dynload_hpux.c
 
 
dynload_shlib.c
 
 
dynload_stub.c
 
 
dynload_win.c
 
 
emscripten_signal.c
 
 
errors.c
 
 
fileutils.c
 
 
flowgraph.c
 
 
formatter_unicode.c
 
 
frame.c
 
 
frozen.c
 
 
frozenmain.c
 
 
future.c
 
 
generated_cases.c.h
 
 
getargs.c
 
 
getcompiler.c
 
 
getcopyright.c
 
 
getopt.c
 
 
getplatform.c
 
 
getversion.c
 
 
hamt.c
 
 
hashtable.c
 
 
import.c
 
 
importdl.c
 
 
importdl.h
 
 
initconfig.c
 
 
instrumentation.c
 
 
intrinsics.c
 
 
legacy_tracing.c
 
 
makeopcodetargets.py
 
 
marshal.c
 
 
modsupport.c
 
 
mysnprintf.c
 
 
mystrtoul.c
 
 
opcode_metadata.h
 
 
opcode_targets.h
 
 
pathconfig.c
 
 
perf_trampoline.c
 
 
preconfig.c
 
 
pyarena.c
 
 
pyctype.c
 
 
pyfpe.c
 
 
pyhash.c
 
 
pylifecycle.c
 
 
pymath.c
 
 
pystate.c
 
 
pystrcmp.c
 
 
pystrhex.c
 
 
pystrtod.c
 
 
pythonrun.c
 
 
pytime.c
 
 
specialize.c
 
 
stdlib_module_names.h
 
 
structmember.c
 
 
suggestions.c
 
 
symtable.c
 
 
sysmodule.c
 
 
thread.c
 
 
thread_nt.h
 
 
thread_pthread.h
 
 
thread_pthread_stubs.h
 
 
traceback.c
 
 

README 

Miscellaneous source files for the main Python shared library