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gh-100228: Warn from os.fork() if other threads exist. (#100229)

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Not comprehensive, best effort warning. There are cases when threads exist on some platforms that this code cannot detect. macOS when API permissions allow and Linux with a readable /proc procfs present are the currently supported cases where a warning should show up reliably.

Starting with a DeprecationWarning for now, it is less disruptive than something like RuntimeWarning and most likely to only be seen in people's CI tests - a good place to start with this messaging.
This commit is contained in:
Gregory P. Smith 2022-12-29 14:41:39 -08:00 • committed by GitHub
parent 2df82db485
commit 894f2c3c16
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 283 additions and 66 deletions
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2
Include/internal/pycore_global_objects_fini_generated.h generated
View file

@ -733,6 +733,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(__xor__));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_abc_impl));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_abstract_));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_active));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_annotation));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_anonymous_));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_argtypes_));
@ -753,6 +754,7 @@ _PyStaticObjects_CheckRefcnt(PyInterpreterState *interp) {
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_initializing));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_is_text_encoding));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_length_));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_limbo));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_lock_unlock_module));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_loop));
_PyStaticObject_CheckRefcnt((PyObject *)&_Py_ID(_needs_com_addref_));

2
Include/internal/pycore_global_strings.h
View file

@ -219,6 +219,7 @@ struct _Py_global_strings {
STRUCT_FOR_ID(__xor__)
STRUCT_FOR_ID(_abc_impl)
STRUCT_FOR_ID(_abstract_)
STRUCT_FOR_ID(_active)
STRUCT_FOR_ID(_annotation)
STRUCT_FOR_ID(_anonymous_)
STRUCT_FOR_ID(_argtypes_)
@ -239,6 +240,7 @@ struct _Py_global_strings {
STRUCT_FOR_ID(_initializing)
STRUCT_FOR_ID(_is_text_encoding)
STRUCT_FOR_ID(_length_)
STRUCT_FOR_ID(_limbo)
STRUCT_FOR_ID(_lock_unlock_module)
STRUCT_FOR_ID(_loop)
STRUCT_FOR_ID(_needs_com_addref_)

2
Include/internal/pycore_runtime_init_generated.h generated
View file

@ -725,6 +725,7 @@ extern "C" {
INIT_ID(__xor__), \
INIT_ID(_abc_impl), \
INIT_ID(_abstract_), \
INIT_ID(_active), \
INIT_ID(_annotation), \
INIT_ID(_anonymous_), \
INIT_ID(_argtypes_), \
@ -745,6 +746,7 @@ extern "C" {
INIT_ID(_initializing), \
INIT_ID(_is_text_encoding), \
INIT_ID(_length_), \
INIT_ID(_limbo), \
INIT_ID(_lock_unlock_module), \
INIT_ID(_loop), \
INIT_ID(_needs_com_addref_), \

4
Include/internal/pycore_unicodeobject_generated.h generated
View file

@ -344,6 +344,8 @@ _PyUnicode_InitStaticStrings(void) {
PyUnicode_InternInPlace(&string);
string = &_Py_ID(_abstract_);
PyUnicode_InternInPlace(&string);
string = &_Py_ID(_active);
PyUnicode_InternInPlace(&string);
string = &_Py_ID(_annotation);
PyUnicode_InternInPlace(&string);
string = &_Py_ID(_anonymous_);
@ -384,6 +386,8 @@ _PyUnicode_InitStaticStrings(void) {
PyUnicode_InternInPlace(&string);
string = &_Py_ID(_length_);
PyUnicode_InternInPlace(&string);
string = &_Py_ID(_limbo);
PyUnicode_InternInPlace(&string);
string = &_Py_ID(_lock_unlock_module);
PyUnicode_InternInPlace(&string);
string = &_Py_ID(_loop);