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Issue #23911: Move path-based bootstrap code to a separate frozen module.

This commit is contained in:
Eric Snow 2015-05-02 19:15:18 -06:00
parent 6b4c63dea5
commit 32439d6eb6
27 changed files with 6192 additions and 5712 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
Lib/ctypes/test/test_values.py
View File

@ -59,8 +59,13 @@ class Win_ValuesTestCase(unittest.TestCase):
items = []
# _frozen_importlib changes size whenever importlib._bootstrap
# changes, so it gets a special case. We should make sure it's
# found, but don't worry about its size too much.
_fzn_implib_seen = False
# found, but don't worry about its size too much. The same
# applies to _frozen_importlib_external.
bootstrap_seen = []
bootstrap_expected = (
b'_frozen_importlib',
b'_frozen_importlib_external',
)
for entry in ft:
# This is dangerous. We *can* iterate over a pointer, but
# the loop will not terminate (maybe with an access
@ -68,10 +73,10 @@ class Win_ValuesTestCase(unittest.TestCase):
if entry.name is None:
break
if entry.name == b'_frozen_importlib':
_fzn_implib_seen = True
if entry.name in bootstrap_expected:
bootstrap_seen.append(entry.name)
self.assertTrue(entry.size,
"_frozen_importlib was reported as having no size")
"{} was reported as having no size".format(entry.name))
continue
items.append((entry.name, entry.size))
@ -81,8 +86,8 @@ class Win_ValuesTestCase(unittest.TestCase):
]
self.assertEqual(items, expected)
self.assertTrue(_fzn_implib_seen,
"_frozen_importlib wasn't found in PyImport_FrozenModules")
self.assertEqual(sorted(bootstrap_seen), bootstrap_expected,
"frozen bootstrap modules did not match PyImport_FrozenModules")
from ctypes import _pointer_type_cache
del _pointer_type_cache[struct_frozen]

3
Lib/imp.py
View File

@ -16,7 +16,8 @@ except ImportError:
# Platform doesn't support dynamic loading.
load_dynamic = None
from importlib._bootstrap import SourcelessFileLoader, _ERR_MSG, _exec, _load
from importlib._bootstrap import _ERR_MSG, _exec, _load
from importlib._bootstrap_external import SourcelessFileLoader
from importlib import machinery
from importlib import util

20
Lib/importlib/__init__.py
View File

@ -30,9 +30,25 @@ else:
pass
sys.modules['importlib._bootstrap'] = _bootstrap
try:
import _frozen_importlib_external as _bootstrap_external
except ImportError:
from . import _bootstrap_external
_bootstrap_external._setup(_bootstrap)
else:
_bootstrap_external.__name__ = 'importlib._bootstrap_external'
_bootstrap_external.__package__ = 'importlib'
try:
_bootstrap_external.__file__ = __file__.replace('__init__.py', '_bootstrap_external.py')
except NameError:
# __file__ is not guaranteed to be defined, e.g. if this code gets
# frozen by a tool like cx_Freeze.
pass
sys.modules['importlib._bootstrap_external'] = _bootstrap_external
# To simplify imports in test code
_w_long = _bootstrap._w_long
_r_long = _bootstrap._r_long
_w_long = _bootstrap_external._w_long
_r_long = _bootstrap_external._r_long
# Fully bootstrapped at this point, import whatever you like, circular
# dependencies and startup overhead minimisation permitting :)

1343
Lib/importlib/_bootstrap.py
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File diff suppressed because it is too large Load Diff

1462
Lib/importlib/_bootstrap_external.py Normal file
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File diff suppressed because it is too large Load Diff

22
Lib/importlib/abc.py
View File

@ -1,12 +1,17 @@
"""Abstract base classes related to import."""
from . import _bootstrap
from . import _bootstrap_external
from . import machinery
try:
import _frozen_importlib
# import _frozen_importlib_external
except ImportError as exc:
if exc.name != '_frozen_importlib':
raise
_frozen_importlib = None
try:
import _frozen_importlib_external
except ImportError as exc:
_frozen_importlib_external = _bootstrap_external
import abc
@ -14,7 +19,10 @@ def _register(abstract_cls, *classes):
for cls in classes:
abstract_cls.register(cls)
if _frozen_importlib is not None:
try:
frozen_cls = getattr(_frozen_importlib, cls.__name__)
except AttributeError:
frozen_cls = getattr(_frozen_importlib_external, cls.__name__)
abstract_cls.register(frozen_cls)
@ -102,7 +110,7 @@ class PathEntryFinder(Finder):
else:
return None, []
find_module = _bootstrap._find_module_shim
find_module = _bootstrap_external._find_module_shim
def invalidate_caches(self):
"""An optional method for clearing the finder's cache, if any.
@ -144,7 +152,7 @@ class Loader(metaclass=abc.ABCMeta):
"""
if not hasattr(self, 'exec_module'):
raise ImportError
return _bootstrap._load_module_shim(self, fullname)
return _bootstrap_external._load_module_shim(self, fullname)
def module_repr(self, module):
"""Return a module's repr.
@ -222,8 +230,8 @@ class InspectLoader(Loader):
argument should be where the data was retrieved (when applicable)."""
return compile(data, path, 'exec', dont_inherit=True)
exec_module = _bootstrap._LoaderBasics.exec_module
load_module = _bootstrap._LoaderBasics.load_module
exec_module = _bootstrap_external._LoaderBasics.exec_module
load_module = _bootstrap_external._LoaderBasics.load_module
_register(InspectLoader, machinery.BuiltinImporter, machinery.FrozenImporter)
@ -265,7 +273,7 @@ class ExecutionLoader(InspectLoader):
_register(ExecutionLoader, machinery.ExtensionFileLoader)
class FileLoader(_bootstrap.FileLoader, ResourceLoader, ExecutionLoader):
class FileLoader(_bootstrap_external.FileLoader, ResourceLoader, ExecutionLoader):
"""Abstract base class partially implementing the ResourceLoader and
ExecutionLoader ABCs."""
@ -274,7 +282,7 @@ _register(FileLoader, machinery.SourceFileLoader,
machinery.SourcelessFileLoader)
class SourceLoader(_bootstrap.SourceLoader, ResourceLoader, ExecutionLoader):
class SourceLoader(_bootstrap_external.SourceLoader, ResourceLoader, ExecutionLoader):
"""Abstract base class for loading source code (and optionally any
corresponding bytecode).

18
Lib/importlib/machinery.py
View File

@ -2,18 +2,18 @@
import _imp
from ._bootstrap import (SOURCE_SUFFIXES, DEBUG_BYTECODE_SUFFIXES,
OPTIMIZED_BYTECODE_SUFFIXES, BYTECODE_SUFFIXES,
EXTENSION_SUFFIXES)
from ._bootstrap import ModuleSpec
from ._bootstrap import BuiltinImporter
from ._bootstrap import FrozenImporter
from ._bootstrap import WindowsRegistryFinder
from ._bootstrap import PathFinder
from ._bootstrap import FileFinder
from ._bootstrap import SourceFileLoader
from ._bootstrap import SourcelessFileLoader
from ._bootstrap import ExtensionFileLoader
from ._bootstrap_external import (SOURCE_SUFFIXES, DEBUG_BYTECODE_SUFFIXES,
OPTIMIZED_BYTECODE_SUFFIXES, BYTECODE_SUFFIXES,
EXTENSION_SUFFIXES)
from ._bootstrap_external import WindowsRegistryFinder
from ._bootstrap_external import PathFinder
from ._bootstrap_external import FileFinder
from ._bootstrap_external import SourceFileLoader
from ._bootstrap_external import SourcelessFileLoader
from ._bootstrap_external import ExtensionFileLoader
def all_suffixes():

12
Lib/importlib/util.py
View File

@ -1,14 +1,14 @@
"""Utility code for constructing importers, etc."""
from . import abc
from ._bootstrap import MAGIC_NUMBER
from ._bootstrap import cache_from_source
from ._bootstrap import decode_source
from ._bootstrap import module_from_spec
from ._bootstrap import source_from_cache
from ._bootstrap import spec_from_loader
from ._bootstrap import spec_from_file_location
from ._bootstrap import _resolve_name
from ._bootstrap import spec_from_loader
from ._bootstrap import _find_spec
from ._bootstrap_external import MAGIC_NUMBER
from ._bootstrap_external import cache_from_source
from ._bootstrap_external import decode_source
from ._bootstrap_external import source_from_cache
from ._bootstrap_external import spec_from_file_location
from contextlib import contextmanager
import functools

4
Lib/modulefinder.py
View File

@ -1,7 +1,7 @@
"""Find modules used by a script, using introspection."""
import dis
import importlib._bootstrap
import importlib._bootstrap_external
import importlib.machinery
import marshal
import os
@ -289,7 +289,7 @@ class ModuleFinder:
co = compile(fp.read()+'\n', pathname, 'exec')
elif type == imp.PY_COMPILED:
try:
marshal_data = importlib._bootstrap._validate_bytecode_header(fp.read())
marshal_data = importlib._bootstrap_external._validate_bytecode_header(fp.read())
except ImportError as exc:
self.msgout(2, "raise ImportError: " + str(exc), pathname)
raise

8
Lib/py_compile.py
View File

@ -3,7 +3,7 @@
This module has intimate knowledge of the format of .pyc files.
"""
import importlib._bootstrap
import importlib._bootstrap_external
import importlib.machinery
import importlib.util
import os
@ -137,10 +137,10 @@ def compile(file, cfile=None, dfile=None, doraise=False, optimize=-1):
except FileExistsError:
pass
source_stats = loader.path_stats(file)
bytecode = importlib._bootstrap._code_to_bytecode(
bytecode = importlib._bootstrap_external._code_to_bytecode(
code, source_stats['mtime'], source_stats['size'])
mode = importlib._bootstrap._calc_mode(file)
importlib._bootstrap._write_atomic(cfile, bytecode, mode)
mode = importlib._bootstrap_external._calc_mode(file)
importlib._bootstrap_external._write_atomic(cfile, bytecode, mode)
return cfile

5
Lib/pydoc.py
View File

@ -53,6 +53,7 @@ Richard Chamberlain, for the first implementation of textdoc.
import builtins
import importlib._bootstrap
import importlib._bootstrap_external
import importlib.machinery
import importlib.util
import inspect
@ -292,9 +293,9 @@ def importfile(path):
filename = os.path.basename(path)
name, ext = os.path.splitext(filename)
if is_bytecode:
loader = importlib._bootstrap.SourcelessFileLoader(name, path)
loader = importlib._bootstrap_external.SourcelessFileLoader(name, path)
else:
loader = importlib._bootstrap.SourceFileLoader(name, path)
loader = importlib._bootstrap_external.SourceFileLoader(name, path)
# XXX We probably don't need to pass in the loader here.
spec = importlib.util.spec_from_file_location(name, path, loader=loader)
try:

2
Lib/runpy.py
View File

@ -58,7 +58,7 @@ class _ModifiedArgv0(object):
self.value = self._sentinel
sys.argv[0] = self._saved_value
# TODO: Replace these helpers with importlib._bootstrap functions
# TODO: Replace these helpers with importlib._bootstrap_external functions.
def _run_code(code, run_globals, init_globals=None,
mod_name=None, mod_spec=None,
pkg_name=None, script_name=None):

4
Lib/site.py
View File

@ -98,8 +98,8 @@ def makepath(*paths):
def abs_paths():
"""Set all module __file__ and __cached__ attributes to an absolute path"""
for m in set(sys.modules.values()):
if (getattr(getattr(m, '__loader__', None), '__module__', None) !=
'_frozen_importlib'):
if (getattr(getattr(m, '__loader__', None), '__module__', None) not in
('_frozen_importlib', '_frozen_importlib_external')):
continue # don't mess with a PEP 302-supplied __file__
try:
m.__file__ = os.path.abspath(m.__file__)

20
Lib/test/test_import/__init__.py
View File

@ -1,7 +1,7 @@
# We import importlib *ASAP* in order to test #15386
import importlib
import importlib.util
from importlib._bootstrap import _get_sourcefile
from importlib._bootstrap_external import _get_sourcefile
import builtins
import marshal
import os
@ -845,19 +845,27 @@ class ImportlibBootstrapTests(unittest.TestCase):
self.assertEqual(mod.__package__, 'importlib')
self.assertTrue(mod.__file__.endswith('_bootstrap.py'), mod.__file__)
def test_frozen_importlib_external_is_bootstrap_external(self):
from importlib import _bootstrap_external
mod = sys.modules['_frozen_importlib_external']
self.assertIs(mod, _bootstrap_external)
self.assertEqual(mod.__name__, 'importlib._bootstrap_external')
self.assertEqual(mod.__package__, 'importlib')
self.assertTrue(mod.__file__.endswith('_bootstrap_external.py'), mod.__file__)
def test_there_can_be_only_one(self):
# Issue #15386 revealed a tricky loophole in the bootstrapping
# This test is technically redundant, since the bug caused importing
# this test module to crash completely, but it helps prove the point
from importlib import machinery
mod = sys.modules['_frozen_importlib']
self.assertIs(machinery.FileFinder, mod.FileFinder)
self.assertIs(machinery.ModuleSpec, mod.ModuleSpec)
@cpython_only
class GetSourcefileTests(unittest.TestCase):
"""Test importlib._bootstrap._get_sourcefile() as used by the C API.
"""Test importlib._bootstrap_external._get_sourcefile() as used by the C API.
Because of the peculiarities of the need of this function, the tests are
knowingly whitebox tests.
@ -867,7 +875,7 @@ class GetSourcefileTests(unittest.TestCase):
def test_get_sourcefile(self):
# Given a valid bytecode path, return the path to the corresponding
# source file if it exists.
with mock.patch('importlib._bootstrap._path_isfile') as _path_isfile:
with mock.patch('importlib._bootstrap_external._path_isfile') as _path_isfile:
_path_isfile.return_value = True;
path = TESTFN + '.pyc'
expect = TESTFN + '.py'
@ -876,7 +884,7 @@ class GetSourcefileTests(unittest.TestCase):
def test_get_sourcefile_no_source(self):
# Given a valid bytecode path without a corresponding source path,
# return the original bytecode path.
with mock.patch('importlib._bootstrap._path_isfile') as _path_isfile:
with mock.patch('importlib._bootstrap_external._path_isfile') as _path_isfile:
_path_isfile.return_value = False;
path = TESTFN + '.pyc'
self.assertEqual(_get_sourcefile(path), path)
@ -1031,7 +1039,7 @@ class ImportTracebackTests(unittest.TestCase):
# We simulate a bug in importlib and check that it's not stripped
# away from the traceback.
self.create_module("foo", "")
importlib = sys.modules['_frozen_importlib']
importlib = sys.modules['_frozen_importlib_external']
if 'load_module' in vars(importlib.SourceLoader):
old_exec_module = importlib.SourceLoader.exec_module
else:

6
Lib/test/test_importlib/extension/test_case_sensitivity.py
View File

@ -1,4 +1,4 @@
from importlib import _bootstrap
from importlib import _bootstrap_external
import sys
from test import support
import unittest
@ -26,7 +26,7 @@ class ExtensionModuleCaseSensitivityTest:
def test_case_sensitive(self):
with support.EnvironmentVarGuard() as env:
env.unset('PYTHONCASEOK')
if b'PYTHONCASEOK' in _bootstrap._os.environ:
if b'PYTHONCASEOK' in _bootstrap_external._os.environ:
self.skipTest('os.environ changes not reflected in '
'_os.environ')
loader = self.find_module()
@ -35,7 +35,7 @@ class ExtensionModuleCaseSensitivityTest:
def test_case_insensitivity(self):
with support.EnvironmentVarGuard() as env:
env.set('PYTHONCASEOK', '1')
if b'PYTHONCASEOK' not in _bootstrap._os.environ:
if b'PYTHONCASEOK' not in _bootstrap_external._os.environ:
self.skipTest('os.environ changes not reflected in '
'_os.environ')
loader = self.find_module()

2
Lib/test/test_importlib/import_/test_path.py
View File

@ -99,7 +99,7 @@ class FinderTests:
new_path_importer_cache.pop(None, None)
new_path_hooks = [zipimport.zipimporter,
self.machinery.FileFinder.path_hook(
*self.importlib._bootstrap._get_supported_file_loaders())]
*self.importlib._bootstrap_external._get_supported_file_loaders())]
missing = object()
email = sys.modules.pop('email', missing)
try:

4
Lib/test/test_importlib/source/test_case_sensitivity.py
View File

@ -42,7 +42,7 @@ class CaseSensitivityTest:
def test_sensitive(self):
with test_support.EnvironmentVarGuard() as env:
env.unset('PYTHONCASEOK')
if b'PYTHONCASEOK' in self.importlib._bootstrap._os.environ:
if b'PYTHONCASEOK' in self.importlib._bootstrap_external._os.environ:
self.skipTest('os.environ changes not reflected in '
'_os.environ')
sensitive, insensitive = self.sensitivity_test()
@ -53,7 +53,7 @@ class CaseSensitivityTest:
def test_insensitive(self):
with test_support.EnvironmentVarGuard() as env:
env.set('PYTHONCASEOK', '1')
if b'PYTHONCASEOK' not in self.importlib._bootstrap._os.environ:
if b'PYTHONCASEOK' not in self.importlib._bootstrap_external._os.environ:
self.skipTest('os.environ changes not reflected in '
'_os.environ')
sensitive, insensitive = self.sensitivity_test()

6
Lib/test/test_site.py
View File

@ -355,8 +355,10 @@ class ImportSideEffectTests(unittest.TestCase):
stdout, stderr = proc.communicate()
self.assertEqual(proc.returncode, 0)
os__file__, os__cached__ = stdout.splitlines()[:2]
self.assertTrue(os.path.isabs(os__file__))
self.assertTrue(os.path.isabs(os__cached__))
self.assertTrue(os.path.isabs(os__file__),
"expected absolute path, got {}".format(os__file__))
self.assertTrue(os.path.isabs(os__cached__),
"expected absolute path, got {}".format(os__cached__))
def test_no_duplicate_paths(self):
# No duplicate paths should exist in sys.path

7
Makefile.pre.in
View File

@ -533,6 +533,7 @@ coverage-report:
: # force rebuilding of parser and importlib
@touch $(GRAMMAR_INPUT)
@touch $(srcdir)/Lib/importlib/_bootstrap.py
@touch $(srcdir)/Lib/importlib/_bootstrap_external.py
: # build with coverage info
$(MAKE) coverage
: # run tests, ignore failures
@ -694,6 +695,10 @@ Programs/_freeze_importlib.o: Programs/_freeze_importlib.c Makefile
Programs/_freeze_importlib: Programs/_freeze_importlib.o $(LIBRARY_OBJS_OMIT_FROZEN)
$(LINKCC) $(PY_LDFLAGS) -o $@ Programs/_freeze_importlib.o $(LIBRARY_OBJS_OMIT_FROZEN) $(LIBS) $(MODLIBS) $(SYSLIBS) $(LDLAST)
Python/importlib_external.h: $(srcdir)/Lib/importlib/_bootstrap_external.py Programs/_freeze_importlib
./Programs/_freeze_importlib \
$(srcdir)/Lib/importlib/_bootstrap_external.py Python/importlib_external.h
Python/importlib.h: $(srcdir)/Lib/importlib/_bootstrap.py Programs/_freeze_importlib
./Programs/_freeze_importlib \
$(srcdir)/Lib/importlib/_bootstrap.py Python/importlib.h
@ -841,7 +846,7 @@ $(OPCODETARGETS_H): $(OPCODETARGETGEN_FILES)
Python/ceval.o: $(OPCODETARGETS_H) $(srcdir)/Python/ceval_gil.h
Python/frozen.o: Python/importlib.h
Python/frozen.o: Python/importlib.h Python/importlib_external.h
Objects/typeobject.o: Objects/typeslots.inc
Objects/typeslots.inc: $(srcdir)/Include/typeslots.h $(srcdir)/Objects/typeslots.py

3
Misc/NEWS
View File

@ -15,6 +15,9 @@ Core and Builtins
- Issue #23910: Optimize property() getter calls. Patch by Joe Jevnik.
- Issue #23911: Move path-based importlib bootstrap code to a separate
frozen module.
- Issue #24022: Fix tokenizer crash when processing undecodable source code.
- Issue #9951: Added a hex() method to bytes, bytearray, and memoryview.

18
Programs/_freeze_importlib.c
View File

@ -12,6 +12,7 @@
#include <unistd.h>
#endif
int Py_FrozenFlag = 1; /* Suppress errors from getpath.c */
/* To avoid a circular dependency on frozen.o, we create our own structure
of frozen modules instead, left deliberately blank so as to avoid
@ -33,13 +34,14 @@ const char header[] = "/* Auto-generated by Programs/_freeze_importlib.c */";
int
main(int argc, char *argv[])
{
char *inpath, *outpath;
char *inpath, *outpath, *code_name;
FILE *infile = NULL, *outfile = NULL;
struct _Py_stat_struct status;
size_t text_size, data_size, n;
char *text = NULL;
unsigned char *data;
PyObject *code = NULL, *marshalled = NULL;
int is_bootstrap = 1;
PyImport_FrozenModules = _PyImport_FrozenModules;
@ -82,8 +84,14 @@ main(int argc, char *argv[])
/* Don't install importlib, since it could execute outdated bytecode. */
_Py_InitializeEx_Private(1, 0);
code = Py_CompileStringExFlags(text, "<frozen importlib._bootstrap>",
Py_file_input, NULL, 0);
if (strstr(inpath, "_external") != NULL) {
is_bootstrap = 0;
}
code_name = is_bootstrap ?
"<frozen importlib._bootstrap>" :
"<frozen importlib._bootstrap_external>";
code = Py_CompileStringExFlags(text, code_name, Py_file_input, NULL, 0);
if (code == NULL)
goto error;
free(text);
@ -106,7 +114,11 @@ main(int argc, char *argv[])
goto error;
}
fprintf(outfile, "%s\n", header);
if (is_bootstrap)
fprintf(outfile, "const unsigned char _Py_M__importlib[] = {\n");
else
fprintf(outfile,
"const unsigned char _Py_M__importlib_external[] = {\n");
for (n = 0; n < data_size; n += 16) {
size_t i, end = Py_MIN(n + 16, data_size);
fprintf(outfile, " ");

3
Python/frozen.c
View File

@ -3,6 +3,7 @@
#include "Python.h"
#include "importlib.h"
#include "importlib_external.h"
/* In order to test the support for frozen modules, by default we
define a single frozen module, __hello__. Loading it will print
@ -31,6 +32,8 @@ static unsigned char M___hello__[] = {
static const struct _frozen _PyImport_FrozenModules[] = {
/* importlib */
{"_frozen_importlib", _Py_M__importlib, (int)sizeof(_Py_M__importlib)},
{"_frozen_importlib_external", _Py_M__importlib_external,
(int)sizeof(_Py_M__importlib_external)},
/* Test module */
{"__hello__", M___hello__, SIZE},
/* Test package (negative size indicates package-ness) */

32
Python/import.c
View File

@ -491,8 +491,13 @@ PyImport_GetMagicNumber(void)
{
long res;
PyInterpreterState *interp = PyThreadState_Get()->interp;
PyObject *pyc_magic = PyObject_GetAttrString(interp->importlib,
"_RAW_MAGIC_NUMBER");
PyObject *external, *pyc_magic;
external = PyObject_GetAttrString(interp->importlib, "_bootstrap_external");
if (external == NULL)
return -1;
pyc_magic = PyObject_GetAttrString(external, "_RAW_MAGIC_NUMBER");
Py_DECREF(external);
if (pyc_magic == NULL)
return -1;
res = PyLong_AsLong(pyc_magic);
@ -737,7 +742,7 @@ PyImport_ExecCodeModuleWithPathnames(const char *name, PyObject *co,
const char *cpathname)
{
PyObject *m = NULL;
PyObject *nameobj, *pathobj = NULL, *cpathobj = NULL;
PyObject *nameobj, *pathobj = NULL, *cpathobj = NULL, *external= NULL;
nameobj = PyUnicode_FromString(name);
if (nameobj == NULL)
@ -765,9 +770,14 @@ PyImport_ExecCodeModuleWithPathnames(const char *name, PyObject *co,
"no interpreter!");
}
pathobj = _PyObject_CallMethodIdObjArgs(interp->importlib,
external= PyObject_GetAttrString(interp->importlib,
"_bootstrap_external");
if (external != NULL) {
pathobj = _PyObject_CallMethodIdObjArgs(external,
&PyId__get_sourcefile, cpathobj,
NULL);
Py_DECREF(external);
}
if (pathobj == NULL)
PyErr_Clear();
}
@ -833,7 +843,7 @@ PyObject*
PyImport_ExecCodeModuleObject(PyObject *name, PyObject *co, PyObject *pathname,
PyObject *cpathname)
{
PyObject *d, *res;
PyObject *d, *external, *res;
PyInterpreterState *interp = PyThreadState_GET()->interp;
_Py_IDENTIFIER(_fix_up_module);
@ -845,9 +855,13 @@ PyImport_ExecCodeModuleObject(PyObject *name, PyObject *co, PyObject *pathname,
if (pathname == NULL) {
pathname = ((PyCodeObject *)co)->co_filename;
}
res = _PyObject_CallMethodIdObjArgs(interp->importlib,
external = PyObject_GetAttrString(interp->importlib, "_bootstrap_external");
if (external == NULL)
return NULL;
res = _PyObject_CallMethodIdObjArgs(external,
&PyId__fix_up_module,
d, name, pathname, cpathname, NULL);
Py_DECREF(external);
if (res != NULL) {
Py_DECREF(res);
res = exec_code_in_module(name, d, co);
@ -1245,6 +1259,7 @@ static void
remove_importlib_frames(void)
{
const char *importlib_filename = "<frozen importlib._bootstrap>";
const char *external_filename = "<frozen importlib._bootstrap_external>";
const char *remove_frames = "_call_with_frames_removed";
int always_trim = 0;
int in_importlib = 0;
@ -1274,7 +1289,10 @@ remove_importlib_frames(void)
assert(PyTraceBack_Check(tb));
now_in_importlib = (PyUnicode_CompareWithASCIIString(
code->co_filename,
importlib_filename) == 0);
importlib_filename) == 0) ||
(PyUnicode_CompareWithASCIIString(
code->co_filename,
external_filename) == 0);
if (now_in_importlib && !in_importlib) {
/* This is the link to this chunk of importlib tracebacks */
outer_link = prev_link;

6227
Python/importlib.h
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2633
Python/importlib_external.h Normal file
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9
Python/pythonrun.c
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@ -304,7 +304,7 @@ set_main_loader(PyObject *d, const char *filename, const char *loader_name)
{
PyInterpreterState *interp;
PyThreadState *tstate;
PyObject *filename_obj, *loader_type, *loader;
PyObject *filename_obj, *bootstrap, *loader_type = NULL, *loader;
int result = 0;
filename_obj = PyUnicode_DecodeFSDefault(filename);
@ -313,7 +313,12 @@ set_main_loader(PyObject *d, const char *filename, const char *loader_name)
/* Get current thread state and interpreter pointer */
tstate = PyThreadState_GET();
interp = tstate->interp;
loader_type = PyObject_GetAttrString(interp->importlib, loader_name);
bootstrap = PyObject_GetAttrString(interp->importlib,
"_bootstrap_external");
if (bootstrap != NULL) {
loader_type = PyObject_GetAttrString(bootstrap, loader_name);
Py_DECREF(bootstrap);
}
if (loader_type == NULL) {
Py_DECREF(filename_obj);
return -1;

4
Tools/freeze/freeze.py
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@ -366,8 +366,10 @@ def main():
mf.load_file(mod)
# Alias "importlib._bootstrap" to "_frozen_importlib" so that the
# import machinery can bootstrap.
# import machinery can bootstrap. Do the same for
# importlib._bootstrap_external.
mf.modules["_frozen_importlib"] = mf.modules["importlib._bootstrap"]
mf.modules["_frozen_importlib_external"] = mf.modules["importlib._bootstrap_external"]
# Add the main script as either __main__, or the actual module name.
if python_entry_is_main: