cpython/Python/frozen.c

/* Frozen modules initializer
 *
 * Frozen modules are written to header files by Programs/_freeze_module.
 * These files are typically put in Python/frozen_modules/.  Each holds
 * an array of bytes named "_Py_M__<module>", which is used below.
 *
 * These files must be regenerated any time the corresponding .pyc
 * file would change (including with changes to the compiler, bytecode
 * format, marshal format).  This can be done with "make regen-frozen".
 * That make target just runs Tools/build/freeze_modules.py.
 *
 * The freeze_modules.py script also determines which modules get
 * frozen.  Update the list at the top of the script to add, remove,
 * or modify the target modules.  Then run the script
 * (or run "make regen-frozen").
 *
 * The script does the following:
 *
 * 1. run Programs/_freeze_module on the target modules
 * 2. update the includes and _PyImport_FrozenModules[] in this file
 * 3. update the FROZEN_FILES variable in Makefile.pre.in
 * 4. update the per-module targets in Makefile.pre.in
 * 5. update the lists of modules in PCbuild/_freeze_module.vcxproj and
 *    PCbuild/_freeze_module.vcxproj.filters
 *
 * (Note that most of the data in this file is auto-generated by the script.)
 *
 * Those steps can also be done manually, though this is not recommended.
 * Expect such manual changes to be removed the next time
 * freeze_modules.py runs.
 * */

/* In order to test the support for frozen modules, by default we
   define some simple frozen modules: __hello__, __phello__ (a package),
   and __phello__.spam.  Loading any will print some famous words... */

#include "Python.h"
#include "pycore_import.h"

#include <stdbool.h>

/* Includes for frozen modules: */
#include "frozen_modules/importlib._bootstrap.h"
#include "frozen_modules/importlib._bootstrap_external.h"
#include "frozen_modules/zipimport.h"
#include "frozen_modules/abc.h"
#include "frozen_modules/codecs.h"
#include "frozen_modules/io.h"
#include "frozen_modules/_collections_abc.h"
#include "frozen_modules/_sitebuiltins.h"
#include "frozen_modules/genericpath.h"
#include "frozen_modules/ntpath.h"
#include "frozen_modules/posixpath.h"
#include "frozen_modules/os.h"
#include "frozen_modules/site.h"
#include "frozen_modules/stat.h"
#include "frozen_modules/importlib.util.h"
#include "frozen_modules/importlib.machinery.h"
#include "frozen_modules/runpy.h"
#include "frozen_modules/__hello__.h"
#include "frozen_modules/__phello__.h"
#include "frozen_modules/__phello__.ham.h"
#include "frozen_modules/__phello__.ham.eggs.h"
#include "frozen_modules/__phello__.spam.h"
#include "frozen_modules/frozen_only.h"
/* End includes */

static const struct _frozen bootstrap_modules[] = {
    {"_frozen_importlib", _Py_M__importlib__bootstrap, (int)sizeof(_Py_M__importlib__bootstrap), false},
    {"_frozen_importlib_external", _Py_M__importlib__bootstrap_external, (int)sizeof(_Py_M__importlib__bootstrap_external), false},
    {"zipimport", _Py_M__zipimport, (int)sizeof(_Py_M__zipimport), false},
    {0, 0, 0} /* bootstrap sentinel */
};
static const struct _frozen stdlib_modules[] = {
    /* stdlib - startup, without site (python -S) */
    {"abc", _Py_M__abc, (int)sizeof(_Py_M__abc), false},
    {"codecs", _Py_M__codecs, (int)sizeof(_Py_M__codecs), false},
    {"io", _Py_M__io, (int)sizeof(_Py_M__io), false},

    /* stdlib - startup, with site */
    {"_collections_abc", _Py_M___collections_abc, (int)sizeof(_Py_M___collections_abc), false},
    {"_sitebuiltins", _Py_M___sitebuiltins, (int)sizeof(_Py_M___sitebuiltins), false},
    {"genericpath", _Py_M__genericpath, (int)sizeof(_Py_M__genericpath), false},
    {"ntpath", _Py_M__ntpath, (int)sizeof(_Py_M__ntpath), false},
    {"posixpath", _Py_M__posixpath, (int)sizeof(_Py_M__posixpath), false},
    {"os", _Py_M__os, (int)sizeof(_Py_M__os), false},
    {"site", _Py_M__site, (int)sizeof(_Py_M__site), false},
    {"stat", _Py_M__stat, (int)sizeof(_Py_M__stat), false},

    /* runpy - run module with -m */
    {"importlib.util", _Py_M__importlib_util, (int)sizeof(_Py_M__importlib_util), false},
    {"importlib.machinery", _Py_M__importlib_machinery, (int)sizeof(_Py_M__importlib_machinery), false},
    {"runpy", _Py_M__runpy, (int)sizeof(_Py_M__runpy), false},
    {0, 0, 0} /* stdlib sentinel */
};
static const struct _frozen test_modules[] = {
    {"__hello__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false},
    {"__hello_alias__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false},
    {"__phello_alias__", _Py_M____hello__, (int)sizeof(_Py_M____hello__), true},
    {"__phello_alias__.spam", _Py_M____hello__, (int)sizeof(_Py_M____hello__), false},
    {"__phello__", _Py_M____phello__, (int)sizeof(_Py_M____phello__), true},
    {"__phello__.__init__", _Py_M____phello__, (int)sizeof(_Py_M____phello__), false},
    {"__phello__.ham", _Py_M____phello___ham, (int)sizeof(_Py_M____phello___ham), true},
    {"__phello__.ham.__init__", _Py_M____phello___ham, (int)sizeof(_Py_M____phello___ham), false},
    {"__phello__.ham.eggs", _Py_M____phello___ham_eggs, (int)sizeof(_Py_M____phello___ham_eggs), false},
    {"__phello__.spam", _Py_M____phello___spam, (int)sizeof(_Py_M____phello___spam), false},
    {"__hello_only__", _Py_M__frozen_only, (int)sizeof(_Py_M__frozen_only), false},
    {0, 0, 0} /* test sentinel */
};
const struct _frozen *_PyImport_FrozenBootstrap = bootstrap_modules;
const struct _frozen *_PyImport_FrozenStdlib = stdlib_modules;
const struct _frozen *_PyImport_FrozenTest = test_modules;

static const struct _module_alias aliases[] = {
    {"_frozen_importlib", "importlib._bootstrap"},
    {"_frozen_importlib_external", "importlib._bootstrap_external"},
    {"__hello_alias__", "__hello__"},
    {"__phello_alias__", "__hello__"},
    {"__phello_alias__.spam", "__hello__"},
    {"__phello__.__init__", "<__phello__"},
    {"__phello__.ham.__init__", "<__phello__.ham"},
    {"__hello_only__", NULL},
    {0, 0} /* aliases sentinel */
};
const struct _module_alias *_PyImport_FrozenAliases = aliases;


/* Embedding apps may change this pointer to point to their favorite
   collection of frozen modules: */

const struct _frozen *PyImport_FrozenModules = NULL;