FazBrowse GitHub Viewer | Trending |
URL:
| Home
Tools: [Download Repo ZIP]   [Original HTTPS Page]

gh-117953: Small Cleanup of Extensions-Related Machinery Code by ericsnowcurrently · Pull Request #118167 · python/cpython · GitHub

/ cpython Public

gh-117953: Small Cleanup of Extensions-Related Machinery Code #118167

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ericsnowcurrently merged 9 commits into from
Apr 23, 2024
Conversation 0 Commits 9 Checks 0 Files changed
Merged

gh-117953: Small Cleanup of Extensions-Related Machinery Code #118167

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
9 commits
Select commit Hold shift + click to select a range
a66423e
Move the audit entry to _imp_create_dynamic_impl().
ericsnowcurrently Apr 16, 2024
47bc4ca
Always close the file handle.
ericsnowcurrently Apr 16, 2024
48b10b3
Revert the fclose() change.
ericsnowcurrently Apr 16, 2024
56614ad
Move setting __file__ to _imp.create_dynamic().
ericsnowcurrently Apr 17, 2024
6b6fdbe
Add a note about _PyImport_FixupBuiltin().
ericsnowcurrently Apr 17, 2024
08eb450
Clean up _PyImport_FixupBuiltin().
ericsnowcurrently Apr 18, 2024
d841ae8
Clean up create_builtin().
ericsnowcurrently Apr 22, 2024
88ff926
Use "filename" and "path" variable names correctly.
ericsnowcurrently Apr 19, 2024
be50020
Add a comment.
ericsnowcurrently Apr 16, 2024
File filter

Filter by extension

Filter by extension .c  (2) .h  (1) All 2 file types selected
Viewed files
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Unified
Split
Hide whitespace
Diff view
Unified
Split
Hide whitespace
1 change: 1 addition & 0 deletions Include/internal/pycore_import.h
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ extern int _PyImport_SetModuleString(const char *name, PyObject* module);
extern void _PyImport_AcquireLock(PyInterpreterState *interp);
extern int _PyImport_ReleaseLock(PyInterpreterState *interp);

// This is used exclusively for the sys and builtins modules:
extern int _PyImport_FixupBuiltin(
PyObject *mod,
const char *name, /* UTF-8 encoded string */
Expand Down
134 changes: 85 additions & 49 deletions Python/import.c
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -1125,10 +1125,10 @@ _PyImport_CheckSubinterpIncompatibleExtensionAllowed(const char *name)

static PyObject *
get_core_module_dict(PyInterpreterState *interp,
PyObject *name, PyObject *filename)
PyObject *name, PyObject *path)
{
/* Only builtin modules are core. */
if (filename == name) {
if (path == name) {
assert(!PyErr_Occurred());
if (PyUnicode_CompareWithASCIIString(name, "sys") == 0) {
return interp->sysdict_copy;
Expand All @@ -1143,11 +1143,11 @@ get_core_module_dict(PyInterpreterState *interp,
}

static inline int
is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *filename)
is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *path)
{
/* This might be called before the core dict copies are in place,
so we can't rely on get_core_module_dict() here. */
if (filename == name) {
if (path == name) {
if (PyUnicode_CompareWithASCIIString(name, "sys") == 0) {
return 1;
}
Expand All @@ -1159,7 +1159,7 @@ is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *filename)
}

static int
fix_up_extension(PyObject *mod, PyObject *name, PyObject *filename)
fix_up_extension(PyObject *mod, PyObject *name, PyObject *path)
{
if (mod == NULL || !PyModule_Check(mod)) {
PyErr_BadInternalCall();
Expand All @@ -1180,7 +1180,7 @@ fix_up_extension(PyObject *mod, PyObject *name, PyObject *filename)
// bpo-44050: Extensions and def->m_base.m_copy can be updated
// when the extension module doesn't support sub-interpreters.
if (def->m_size == -1) {
if (!is_core_module(tstate->interp, name, filename)) {
if (!is_core_module(tstate->interp, name, path)) {
assert(PyUnicode_CompareWithASCIIString(name, "sys") != 0);
assert(PyUnicode_CompareWithASCIIString(name, "builtins") != 0);
if (def->m_base.m_copy) {
Expand All @@ -1202,7 +1202,7 @@ fix_up_extension(PyObject *mod, PyObject *name, PyObject *filename)

// XXX Why special-case the main interpreter?
if (_Py_IsMainInterpreter(tstate->interp) || def->m_size == -1) {
if (_extensions_cache_set(filename, name, def) < 0) {
if (_extensions_cache_set(path, name, def) < 0) {
return -1;
}
}
Expand All @@ -1227,10 +1227,10 @@ _PyImport_FixupExtensionObject(PyObject *mod, PyObject *name,

static PyObject *
import_find_extension(PyThreadState *tstate, PyObject *name,
PyObject *filename)
PyObject *path)
{
/* Only single-phase init modules will be in the cache. */
PyModuleDef *def = _extensions_cache_get(filename, name);
PyModuleDef *def = _extensions_cache_get(path, name);
if (def == NULL) {
return NULL;
}
Expand All @@ -1253,7 +1253,7 @@ import_find_extension(PyThreadState *tstate, PyObject *name,
if (m_copy == NULL) {
/* It might be a core module (e.g. sys & builtins),
for which we don't set m_copy. */
m_copy = get_core_module_dict(tstate->interp, name, filename);
m_copy = get_core_module_dict(tstate->interp, name, path);
if (m_copy == NULL) {
return NULL;
}
Expand Down Expand Up @@ -1292,16 +1292,16 @@ import_find_extension(PyThreadState *tstate, PyObject *name,
int verbose = _PyInterpreterState_GetConfig(tstate->interp)->verbose;
if (verbose) {
PySys_FormatStderr("import %U # previously loaded (%R)\n",
name, filename);
name, path);
}
return mod;
}

static int
clear_singlephase_extension(PyInterpreterState *interp,
PyObject *name, PyObject *filename)
PyObject *name, PyObject *path)
{
PyModuleDef *def = _extensions_cache_get(filename, name);
PyModuleDef *def = _extensions_cache_get(path, name);
if (def == NULL) {
if (PyErr_Occurred()) {
return -1;
Expand All @@ -1322,7 +1322,7 @@ clear_singlephase_extension(PyInterpreterState *interp,
}

/* Clear the cached module def. */
_extensions_cache_delete(filename, name);
_extensions_cache_delete(path, name);

return 0;
}
Expand All @@ -1336,18 +1336,28 @@ int
_PyImport_FixupBuiltin(PyObject *mod, const char *name, PyObject *modules)
{
int res = -1;
assert(mod != NULL && PyModule_Check(mod));

PyObject *nameobj;
nameobj = PyUnicode_InternFromString(name);
if (nameobj == NULL) {
return -1;
}

PyModuleDef *def = PyModule_GetDef(mod);
if (def == NULL) {
PyErr_BadInternalCall();
goto finally;
}

if (PyObject_SetItem(modules, nameobj, mod) < 0) {
goto finally;
}
if (fix_up_extension(mod, nameobj, nameobj) < 0) {
PyMapping_DelItem(modules, nameobj);
goto finally;
}

res = 0;

finally:
Expand Down Expand Up @@ -1382,39 +1392,45 @@ create_builtin(PyThreadState *tstate, PyObject *name, PyObject *spec)
}

PyObject *modules = MODULES(tstate->interp);
struct _inittab *found = NULL;
for (struct _inittab *p = INITTAB; p->name != NULL; p++) {
if (_PyUnicode_EqualToASCIIString(name, p->name)) {
if (p->initfunc == NULL) {
/* Cannot re-init internal module ("sys" or "builtins") */
return import_add_module(tstate, name);
}
mod = (*p->initfunc)();
if (mod == NULL) {
return NULL;
}
found = p;
}
}
if (found == NULL) {
// not found
Py_RETURN_NONE;
}

if (PyObject_TypeCheck(mod, &PyModuleDef_Type)) {
return PyModule_FromDefAndSpec((PyModuleDef*)mod, spec);
}
else {
/* Remember pointer to module init function. */
PyModuleDef *def = PyModule_GetDef(mod);
if (def == NULL) {
return NULL;
}
PyModInitFunction p0 = (PyModInitFunction)found->initfunc;
if (p0 == NULL) {
/* Cannot re-init internal module ("sys" or "builtins") */
assert(is_core_module(tstate->interp, name, name));
return import_add_module(tstate, name);
}

def->m_base.m_init = p->initfunc;
if (_PyImport_FixupExtensionObject(mod, name, name,
modules) < 0) {
return NULL;
}
return mod;
}
}
mod = p0();
if (mod == NULL) {
return NULL;
}

// not found
Py_RETURN_NONE;
if (PyObject_TypeCheck(mod, &PyModuleDef_Type)) {
return PyModule_FromDefAndSpec((PyModuleDef*)mod, spec);
}
else {
/* Remember pointer to module init function. */
PyModuleDef *def = PyModule_GetDef(mod);
if (def == NULL) {
return NULL;
}

def->m_base.m_init = p0;
if (_PyImport_FixupExtensionObject(mod, name, name, modules) < 0) {
return NULL;
}
return mod;
}
}


Expand Down Expand Up @@ -3724,44 +3740,64 @@ static PyObject *
_imp_create_dynamic_impl(PyObject *module, PyObject *spec, PyObject *file)
/*[clinic end generated code: output=83249b827a4fde77 input=c31b954f4cf4e09d]*/
{
PyObject *mod, *name, *path;
PyObject *mod, *name, *filename;
FILE *fp;

name = PyObject_GetAttrString(spec, "name");
if (name == NULL) {
return NULL;
}

path = PyObject_GetAttrString(spec, "origin");
if (path == NULL) {
filename = PyObject_GetAttrString(spec, "origin");
if (filename == NULL) {
Py_DECREF(name);
return NULL;
}

PyThreadState *tstate = _PyThreadState_GET();
mod = import_find_extension(tstate, name, path);
mod = import_find_extension(tstate, name, filename);
if (mod != NULL || _PyErr_Occurred(tstate)) {
assert(mod == NULL || !_PyErr_Occurred(tstate));
goto finally;
}

if (PySys_Audit("import", "OOOOO", name, filename,
Py_None, Py_None, Py_None) < 0)
{
goto finally;
}

/* Is multi-phase init or this is the first time being loaded. */

/* We would move this (and the fclose() below) into
* _PyImport_GetModInitFunc(), but it isn't clear if the intervening
* code relies on fp still being open. */
if (file != NULL) {
fp = _Py_fopen_obj(path, "r");
fp = _Py_fopen_obj(filename, "r");
if (fp == NULL) {
goto finally;
}
}
else
else {
fp = NULL;
}

mod = _PyImport_LoadDynamicModuleWithSpec(spec, fp);
if (mod != NULL) {
/* Remember the filename as the __file__ attribute */
if (PyModule_AddObjectRef(mod, "__file__", filename) < 0) {
PyErr_Clear(); /* Not important enough to report */
}
}

if (fp)
// XXX Shouldn't this happen in the error cases too.
if (fp) {
fclose(fp);
}

finally:
Py_DECREF(name);
Py_DECREF(path);
Py_DECREF(filename);
return mod;
}

Expand Down
45 changes: 19 additions & 26 deletions Python/importdl.c
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -97,9 +97,10 @@ PyObject *
_PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *fp)
{
#ifndef MS_WINDOWS
PyObject *pathbytes = NULL;
PyObject *filename_bytes = NULL;
const char *filename_buf;
#endif
PyObject *name_unicode = NULL, *name = NULL, *path = NULL, *m = NULL;
PyObject *name_unicode = NULL, *name = NULL, *filename = NULL, *m = NULL;
const char *name_buf, *hook_prefix;
const char *oldcontext, *newcontext;
dl_funcptr exportfunc;
Expand All @@ -126,26 +127,23 @@ _PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *fp)
}
name_buf = PyBytes_AS_STRING(name);

path = PyObject_GetAttrString(spec, "origin");
if (path == NULL)
goto error;

if (PySys_Audit("import", "OOOOO", name_unicode, path,
Py_None, Py_None, Py_None) < 0) {
filename = PyObject_GetAttrString(spec, "origin");
if (filename == NULL) {
goto error;
}

#ifdef MS_WINDOWS
exportfunc = _PyImport_FindSharedFuncptrWindows(hook_prefix, name_buf,
path, fp);
exportfunc = _PyImport_FindSharedFuncptrWindows(
hook_prefix, name_buf, filename, fp);
#else
pathbytes = PyUnicode_EncodeFSDefault(path);
if (pathbytes == NULL)
filename_bytes = PyUnicode_EncodeFSDefault(filename);
if (filename_bytes == NULL) {
goto error;
exportfunc = _PyImport_FindSharedFuncptr(hook_prefix, name_buf,
PyBytes_AS_STRING(pathbytes),
fp);
Py_DECREF(pathbytes);
}
filename_buf = PyBytes_AS_STRING(filename_bytes);
exportfunc = _PyImport_FindSharedFuncptr(
hook_prefix, name_buf, filename_buf, fp);
Py_DECREF(filename_bytes);
#endif

if (exportfunc == NULL) {
Expand All @@ -157,7 +155,7 @@ _PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *fp)
hook_prefix, name_buf);
if (msg == NULL)
goto error;
PyErr_SetImportError(msg, name_unicode, path);
PyErr_SetImportError(msg, name_unicode, filename);
Py_DECREF(msg);
}
goto error;
Expand Down Expand Up @@ -199,7 +197,7 @@ _PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *fp)
if (PyObject_TypeCheck(m, &PyModuleDef_Type)) {
Py_DECREF(name_unicode);
Py_DECREF(name);
Py_DECREF(path);
Py_DECREF(filename);
return PyModule_FromDefAndSpec((PyModuleDef*)m, spec);
}

Expand Down Expand Up @@ -228,25 +226,20 @@ _PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *fp)
}
def->m_base.m_init = p0;

/* Remember the filename as the __file__ attribute */
if (PyModule_AddObjectRef(m, "__file__", path) < 0) {
PyErr_Clear(); /* Not important enough to report */
}

PyObject *modules = PyImport_GetModuleDict();
if (_PyImport_FixupExtensionObject(m, name_unicode, path, modules) < 0)
if (_PyImport_FixupExtensionObject(m, name_unicode, filename, modules) < 0)
goto error;

Py_DECREF(name_unicode);
Py_DECREF(name);
Py_DECREF(path);
Py_DECREF(filename);

return m;

error:
Py_DECREF(name_unicode);
Py_XDECREF(name);
Py_XDECREF(path);
Py_XDECREF(filename);
Py_XDECREF(m);
return NULL;
}
Expand Down
Back | FazBrowse Home | New Git URL