08285d563e
In the list of generated frozen modules at the top of Tools/scripts/freeze_modules.py, you will find that some of the modules have a different name than the module (or .py file) that is actually frozen. Let's call each case an "alias". Aliases do not come into play until we get to the (generated) list of modules in Python/frozen.c. (The tool for freezing modules, Programs/_freeze_module, is only concerned with the source file, not the module it will be used for.) Knowledge of which frozen modules are aliases (and the identity of the original module) normally isn't important. However, this information is valuable when we go to set __file__ on frozen stdlib modules. This change updates Tools/scripts/freeze_modules.py to map aliases to the original module name (or None if not a stdlib module) in Python/frozen.c. We also add a helper function in Python/import.c to look up a frozen module's alias and add the result of that function to the frozen info returned from find_frozen(). https://bugs.python.org/issue45020
128 lines
5.4 KiB
C
128 lines
5.4 KiB
C
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/* Frozen modules initializer
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*
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* Frozen modules are written to header files by Programs/_freeze_module.
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* These files are typically put in Python/frozen_modules/. Each holds
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* an array of bytes named "_Py_M__<module>", which is used below.
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*
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* These files must be regenerated any time the corresponding .pyc
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* file would change (including with changes to the compiler, bytecode
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* format, marshal format). This can be done with "make regen-frozen".
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* That make target just runs Tools/scripts/freeze_modules.py.
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*
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* The freeze_modules.py script also determines which modules get
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* frozen. Update the list at the top of the script to add, remove,
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* or modify the target modules. Then run the script
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* (or run "make regen-frozen").
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*
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* The script does the following:
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*
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* 1. run Programs/_freeze_module on the target modules
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* 2. update the includes and _PyImport_FrozenModules[] in this file
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* 3. update the FROZEN_FILES variable in Makefile.pre.in
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* 4. update the per-module targets in Makefile.pre.in
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* 5. update the lists of modules in PCbuild/_freeze_module.vcxproj and
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* PCbuild/_freeze_module.vcxproj.filters
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*
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* (Note that most of the data in this file is auto-generated by the script.)
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*
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* Those steps can also be done manually, though this is not recommended.
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* Expect such manual changes to be removed the next time
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* freeze_modules.py runs.
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* */
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/* In order to test the support for frozen modules, by default we
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define some simple frozen modules: __hello__, __phello__ (a package),
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and __phello__.spam. Loading any will print some famous words... */
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#include "Python.h"
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#include "pycore_import.h"
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/* Includes for frozen modules: */
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#include "frozen_modules/importlib._bootstrap.h"
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#include "frozen_modules/importlib._bootstrap_external.h"
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#include "frozen_modules/zipimport.h"
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#include "frozen_modules/abc.h"
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#include "frozen_modules/codecs.h"
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#include "frozen_modules/io.h"
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#include "frozen_modules/_collections_abc.h"
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#include "frozen_modules/_sitebuiltins.h"
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#include "frozen_modules/genericpath.h"
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#include "frozen_modules/ntpath.h"
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#include "frozen_modules/posixpath.h"
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#include "frozen_modules/os.h"
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#include "frozen_modules/site.h"
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#include "frozen_modules/stat.h"
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#include "frozen_modules/__hello__.h"
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#include "frozen_modules/__phello__.h"
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#include "frozen_modules/__phello__.ham.h"
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#include "frozen_modules/__phello__.ham.eggs.h"
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#include "frozen_modules/__phello__.spam.h"
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#include "frozen_modules/frozen_only.h"
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/* End includes */
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/* Note that a negative size indicates a package. */
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static const struct _frozen _PyImport_FrozenModules[] = {
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/* import system */
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{"_frozen_importlib", _Py_M__importlib__bootstrap,
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(int)sizeof(_Py_M__importlib__bootstrap)},
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{"_frozen_importlib_external", _Py_M__importlib__bootstrap_external,
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(int)sizeof(_Py_M__importlib__bootstrap_external)},
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{"zipimport", _Py_M__zipimport, (int)sizeof(_Py_M__zipimport)},
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/* stdlib - startup, without site (python -S) */
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{"abc", _Py_M__abc, (int)sizeof(_Py_M__abc)},
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{"codecs", _Py_M__codecs, (int)sizeof(_Py_M__codecs)},
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{"io", _Py_M__io, (int)sizeof(_Py_M__io)},
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/* stdlib - startup, with site */
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{"_collections_abc", _Py_M___collections_abc,
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(int)sizeof(_Py_M___collections_abc)},
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{"_sitebuiltins", _Py_M___sitebuiltins, (int)sizeof(_Py_M___sitebuiltins)},
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{"genericpath", _Py_M__genericpath, (int)sizeof(_Py_M__genericpath)},
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{"ntpath", _Py_M__ntpath, (int)sizeof(_Py_M__ntpath)},
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{"posixpath", _Py_M__posixpath, (int)sizeof(_Py_M__posixpath)},
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{"os.path", _Py_M__posixpath, (int)sizeof(_Py_M__posixpath)},
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{"os", _Py_M__os, (int)sizeof(_Py_M__os)},
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{"site", _Py_M__site, (int)sizeof(_Py_M__site)},
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{"stat", _Py_M__stat, (int)sizeof(_Py_M__stat)},
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/* Test module */
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{"__hello__", _Py_M____hello__, (int)sizeof(_Py_M____hello__)},
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{"__hello_alias__", _Py_M____hello__, (int)sizeof(_Py_M____hello__)},
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{"__phello_alias__", _Py_M____hello__, -(int)sizeof(_Py_M____hello__)},
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{"__phello_alias__.spam", _Py_M____hello__, (int)sizeof(_Py_M____hello__)},
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{"__phello__", _Py_M____phello__, -(int)sizeof(_Py_M____phello__)},
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{"__phello__.__init__", _Py_M____phello__, (int)sizeof(_Py_M____phello__)},
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{"__phello__.ham", _Py_M____phello___ham, -(int)sizeof(_Py_M____phello___ham)},
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{"__phello__.ham.__init__", _Py_M____phello___ham,
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(int)sizeof(_Py_M____phello___ham)},
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{"__phello__.ham.eggs", _Py_M____phello___ham_eggs,
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(int)sizeof(_Py_M____phello___ham_eggs)},
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{"__phello__.spam", _Py_M____phello___spam,
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(int)sizeof(_Py_M____phello___spam)},
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{"__hello_only__", _Py_M__frozen_only, (int)sizeof(_Py_M__frozen_only)},
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{0, 0, 0} /* modules sentinel */
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};
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static const struct _module_alias aliases[] = {
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{"_frozen_importlib", "importlib._bootstrap"},
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{"_frozen_importlib_external", "importlib._bootstrap_external"},
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{"os.path", "posixpath"},
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{"__hello_alias__", "__hello__"},
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{"__phello_alias__", "__hello__"},
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{"__phello_alias__.spam", "__hello__"},
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{"__phello__.__init__", "<__phello__"},
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{"__phello__.ham.__init__", "<__phello__.ham"},
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{"__hello_only__", NULL},
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{0, 0} /* aliases sentinel */
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};
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const struct _module_alias *_PyImport_FrozenAliases = aliases;
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/* Embedding apps may change this pointer to point to their favorite
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collection of frozen modules: */
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const struct _frozen *PyImport_FrozenModules = _PyImport_FrozenModules;
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