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bpo-36710: Add tstate parameter in import.c (GH-14218)

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* Add 'tstate' parameter to many internal import.c functions.
* _PyImportZip_Init() now gets 'tstate' parameter rather than
  'interp'.
* Add 'interp' parameter to _PyState_ClearModules() and rename it
  to _PyInterpreterState_ClearModules().
* Move private _PyImport_FindBuiltin() to the internal C API; add
  'tstate' parameter to it.
* Remove private _PyImport_AddModuleObject() from the C API:
  use public PyImport_AddModuleObject() instead.
* Remove private _PyImport_FindExtensionObjectEx() from the C API:
  use private _PyImport_FindExtensionObject() instead.
This commit is contained in:
Victor Stinner 2019-06-19 02:54:39 +02:00 • committed by GitHub
parent 809ff1181c
commit 0a28f8d379
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
8 changed files with 248 additions and 191 deletions
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364
Python/import.c
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@ -4,6 +4,7 @@
#include "Python-ast.h"
#undef Yield /* undefine macro conflicting with <winbase.h> */
#include "pycore_pyerrors.h"
#include "pycore_pyhash.h"
#include "pycore_pylifecycle.h"
#include "pycore_pymem.h"
@ -25,6 +26,9 @@ extern "C" {
#define CACHEDIR "__pycache__"
/* Forward references */
static PyObject *import_add_module(PyThreadState *tstate, PyObject *name);
/* See _PyImport_FixupExtensionObject() below */
static PyObject *extensions = NULL;
@ -91,25 +95,26 @@ _PyImportHooks_Init(void)
}
PyStatus
_PyImportZip_Init(PyInterpreterState *interp)
_PyImportZip_Init(PyThreadState *tstate)
{
PyObject *path_hooks, *zipimport;
int err = 0;
path_hooks = PySys_GetObject("path_hooks");
if (path_hooks == NULL) {
PyErr_SetString(PyExc_RuntimeError, "unable to get sys.path_hooks");
_PyErr_SetString(tstate, PyExc_RuntimeError,
"unable to get sys.path_hooks");
goto error;
}
int verbose = interp->config.verbose;
int verbose = tstate->interp->config.verbose;
if (verbose) {
PySys_WriteStderr("# installing zipimport hook\n");
}
zipimport = PyImport_ImportModule("zipimport");
if (zipimport == NULL) {
PyErr_Clear(); /* No zip import module -- okay */
_PyErr_Clear(tstate); /* No zip import module -- okay */
if (verbose) {
PySys_WriteStderr("# can't import zipimport\n");
}
@ -120,7 +125,7 @@ _PyImportZip_Init(PyInterpreterState *interp)
&PyId_zipimporter);
Py_DECREF(zipimport);
if (zipimporter == NULL) {
PyErr_Clear(); /* No zipimporter object -- okay */
_PyErr_Clear(tstate); /* No zipimporter object -- okay */
if (verbose) {
PySys_WriteStderr("# can't import zipimport.zipimporter\n");
}
@ -341,26 +346,30 @@ _PyImport_GetModuleId(struct _Py_Identifier *nameid)
int
_PyImport_SetModule(PyObject *name, PyObject *m)
{
PyObject *modules = PyImport_GetModuleDict();
PyThreadState *tstate = _PyThreadState_GET();
PyObject *modules = tstate->interp->modules;
return PyObject_SetItem(modules, name, m);
}
int
_PyImport_SetModuleString(const char *name, PyObject *m)
{
PyObject *modules = PyImport_GetModuleDict();
PyThreadState *tstate = _PyThreadState_GET();
PyObject *modules = tstate->interp->modules;
return PyMapping_SetItemString(modules, name, m);
}
PyObject *
PyImport_GetModule(PyObject *name)
static PyObject *
import_get_module(PyThreadState *tstate, PyObject *name)
{
PyObject *m;
PyObject *modules = PyImport_GetModuleDict();
PyObject *modules = tstate->interp->modules;
if (modules == NULL) {
PyErr_SetString(PyExc_RuntimeError, "unable to get sys.modules");
_PyErr_SetString(tstate, PyExc_RuntimeError,
"unable to get sys.modules");
return NULL;
}
PyObject *m;
Py_INCREF(modules);
if (PyDict_CheckExact(modules)) {
m = PyDict_GetItemWithError(modules, name); /* borrowed */
@ -368,8 +377,8 @@ PyImport_GetModule(PyObject *name)
}
else {
m = PyObject_GetItem(modules, name);
if (m == NULL && PyErr_ExceptionMatches(PyExc_KeyError)) {
PyErr_Clear();
if (m == NULL && _PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
_PyErr_Clear(tstate);
}
}
Py_DECREF(modules);
@ -377,6 +386,14 @@ PyImport_GetModule(PyObject *name)
}
PyObject *
PyImport_GetModule(PyObject *name)
{
PyThreadState *tstate = _PyThreadState_GET();
return import_get_module(tstate, name);
}
/* List of names to clear in sys */
static const char * const sys_deletes[] = {
"path", "argv", "ps1", "ps2",
@ -398,15 +415,13 @@ static const char * const sys_files[] = {
void
PyImport_Cleanup(void)
{
Py_ssize_t pos;
PyObject *key, *value, *dict;
PyInterpreterState *interp = _PyInterpreterState_Get();
PyObject *modules = PyImport_GetModuleDict();
PyObject *weaklist = NULL;
const char * const *p;
if (modules == NULL)
return; /* Already done */
PyThreadState *tstate = _PyThreadState_GET();
PyInterpreterState *interp = tstate->interp;
PyObject *modules = interp->modules;
if (modules == NULL) {
/* Already done */
return;
}
/* Delete some special variables first. These are common
places where user values hide and people complain when their
@ -424,6 +439,7 @@ PyImport_Cleanup(void)
PyErr_WriteUnraisable(NULL);
}
const char * const *p;
for (p = sys_deletes; *p != NULL; p++) {
if (verbose) {
PySys_WriteStderr("# clear sys.%s\n", *p);
@ -436,9 +452,10 @@ PyImport_Cleanup(void)
if (verbose) {
PySys_WriteStderr("# restore sys.%s\n", *p);
}
value = _PyDict_GetItemStringWithError(interp->sysdict, *(p+1));
PyObject *value = _PyDict_GetItemStringWithError(interp->sysdict,
*(p+1));
if (value == NULL) {
if (PyErr_Occurred()) {
if (_PyErr_Occurred(tstate)) {
PyErr_WriteUnraisable(NULL);
}
value = Py_None;
@ -452,7 +469,7 @@ PyImport_Cleanup(void)
modules when they are removed from sys.modules. The name is used
for diagnosis messages (in verbose mode), while the weakref helps
detect those modules which have been held alive. */
weaklist = PyList_New(0);
PyObject *weaklist = PyList_New(0);
if (weaklist == NULL) {
PyErr_WriteUnraisable(NULL);
}
@ -486,7 +503,8 @@ PyImport_Cleanup(void)
/* Remove all modules from sys.modules, hoping that garbage collection
can reclaim most of them. */
if (PyDict_CheckExact(modules)) {
pos = 0;
Py_ssize_t pos = 0;
PyObject *key, *value;
while (PyDict_Next(modules, &pos, &key, &value)) {
CLEAR_MODULE(key, value);
}
@ -497,8 +515,9 @@ PyImport_Cleanup(void)
PyErr_WriteUnraisable(NULL);
}
else {
PyObject *key;
while ((key = PyIter_Next(iterator))) {
value = PyObject_GetItem(modules, key);
PyObject *value = PyObject_GetItem(modules, key);
if (value == NULL) {
PyErr_WriteUnraisable(NULL);
continue;
@ -526,17 +545,17 @@ PyImport_Cleanup(void)
}
/* Restore the original builtins dict, to ensure that any
user data gets cleared. */
dict = PyDict_Copy(interp->builtins);
PyObject *dict = PyDict_Copy(interp->builtins);
if (dict == NULL) {
PyErr_WriteUnraisable(NULL);
}
PyDict_Clear(interp->builtins);
if (PyDict_Update(interp->builtins, interp->builtins_copy)) {
PyErr_Clear();
_PyErr_Clear(tstate);
}
Py_XDECREF(dict);
/* Clear module dict copies stored in the interpreter state */
_PyState_ClearModules();
_PyInterpreterState_ClearModules(tstate->interp);
/* Collect references */
_PyGC_CollectNoFail();
/* Dump GC stats before it's too late, since it uses the warnings
@ -651,7 +670,7 @@ PyImport_GetMagicTag(void)
int
_PyImport_FixupExtensionObject(PyObject *mod, PyObject *name,
PyObject *filename, PyObject *modules)
PyObject *filename, PyObject *modules)
{
PyObject *dict, *key;
struct PyModuleDef *def;
@ -713,33 +732,32 @@ _PyImport_FixupBuiltin(PyObject *mod, const char *name, PyObject *modules)
return res;
}
PyObject *
_PyImport_FindExtensionObject(PyObject *name, PyObject *filename)
static PyObject *
import_find_extension(PyThreadState *tstate, PyObject *name,
PyObject *filename)
{
PyObject *modules = PyImport_GetModuleDict();
return _PyImport_FindExtensionObjectEx(name, filename, modules);
}
if (extensions == NULL) {
return NULL;
}
PyObject *
_PyImport_FindExtensionObjectEx(PyObject *name, PyObject *filename,
PyObject *modules)
{
PyObject *mod, *mdict, *key;
PyModuleDef* def;
if (extensions == NULL)
PyObject *key = PyTuple_Pack(2, filename, name);
if (key == NULL) {
return NULL;
key = PyTuple_Pack(2, filename, name);
if (key == NULL)
return NULL;
def = (PyModuleDef *)PyDict_GetItemWithError(extensions, key);
}
PyModuleDef* def = (PyModuleDef *)PyDict_GetItemWithError(extensions, key);
Py_DECREF(key);
if (def == NULL)
if (def == NULL) {
return NULL;
}
PyObject *mod, *mdict;
PyObject *modules = tstate->interp->modules;
if (def->m_size == -1) {
/* Module does not support repeated initialization */
if (def->m_base.m_copy == NULL)
return NULL;
mod = _PyImport_AddModuleObject(name, modules);
mod = import_add_module(tstate, name);
if (mod == NULL)
return NULL;
mdict = PyModule_GetDict(mod);
@ -764,23 +782,31 @@ _PyImport_FindExtensionObjectEx(PyObject *name, PyObject *filename,
PyMapping_DelItem(modules, name);
return NULL;
}
int verbose = _PyInterpreterState_Get()->config.verbose;
int verbose = tstate->interp->config.verbose;
if (verbose) {
PySys_FormatStderr("import %U # previously loaded (%R)\n",
name, filename);
}
return mod;
}
PyObject *
_PyImport_FindBuiltin(const char *name, PyObject *modules)
_PyImport_FindExtensionObject(PyObject *name, PyObject *filename)
{
PyThreadState *tstate = _PyThreadState_GET();
return import_find_extension(tstate, name, filename);
}
PyObject *
_PyImport_FindBuiltin(PyThreadState *tstate, const char *name)
{
PyObject *res, *nameobj;
nameobj = PyUnicode_InternFromString(name);
if (nameobj == NULL)
return NULL;
res = _PyImport_FindExtensionObjectEx(nameobj, nameobj, modules);
res = import_find_extension(tstate, nameobj, nameobj);
Py_DECREF(nameobj);
return res;
}
@ -791,16 +817,16 @@ _PyImport_FindBuiltin(const char *name, PyObject *modules)
Because the former action is most common, THIS DOES NOT RETURN A
'NEW' REFERENCE! */
PyObject *
PyImport_AddModuleObject(PyObject *name)
static PyObject *
import_add_module(PyThreadState *tstate, PyObject *name)
{
PyObject *modules = PyImport_GetModuleDict();
return _PyImport_AddModuleObject(name, modules);
}
PyObject *modules = tstate->interp->modules;
if (modules == NULL) {
_PyErr_SetString(tstate, PyExc_RuntimeError,
"no import module dictionary");
return NULL;
}
PyObject *
_PyImport_AddModuleObject(PyObject *name, PyObject *modules)
{
PyObject *m;
if (PyDict_CheckExact(modules)) {
m = PyDict_GetItemWithError(modules, name);
@ -809,11 +835,11 @@ _PyImport_AddModuleObject(PyObject *name, PyObject *modules)
m = PyObject_GetItem(modules, name);
// For backward-comaptibility we copy the behavior
// of PyDict_GetItemWithError().
if (PyErr_ExceptionMatches(PyExc_KeyError)) {
PyErr_Clear();
if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
_PyErr_Clear(tstate);
}
}
if (PyErr_Occurred()) {
if (_PyErr_Occurred(tstate)) {
return NULL;
}
if (m != NULL && PyModule_Check(m)) {
@ -831,14 +857,22 @@ _PyImport_AddModuleObject(PyObject *name, PyObject *modules)
return m;
}
PyObject *
PyImport_AddModuleObject(PyObject *name)
{
PyThreadState *tstate = _PyThreadState_GET();
return import_add_module(tstate, name);
}
PyObject *
PyImport_AddModule(const char *name)
{
PyObject *nameobj, *module;
nameobj = PyUnicode_FromString(name);
if (nameobj == NULL)
PyObject *nameobj = PyUnicode_FromString(name);
if (nameobj == NULL) {
return NULL;
module = PyImport_AddModuleObject(nameobj);
}
PyObject *module = PyImport_AddModuleObject(nameobj);
Py_DECREF(nameobj);
return module;
}
@ -846,20 +880,24 @@ PyImport_AddModule(const char *name)
/* Remove name from sys.modules, if it's there. */
static void
remove_module(PyObject *name)
remove_module(PyThreadState *tstate, PyObject *name)
{
PyObject *type, *value, *traceback;
PyErr_Fetch(&type, &value, &traceback);
PyObject *modules = PyImport_GetModuleDict();
_PyErr_Fetch(tstate, &type, &value, &traceback);
PyObject *modules = tstate->interp->modules;
if (!PyMapping_HasKey(modules, name)) {
goto out;
}
if (PyMapping_DelItem(modules, name) < 0) {
Py_FatalError("import: deleting existing key in "
"sys.modules failed");
_PyErr_SetString(tstate, PyExc_RuntimeError,
"deleting key in sys.modules failed");
_PyErr_ChainExceptions(type, value, traceback);
return;
}
out:
PyErr_Restore(type, value, traceback);
_PyErr_Restore(tstate, type, value, traceback);
}
@ -944,23 +982,23 @@ PyImport_ExecCodeModuleWithPathnames(const char *name, PyObject *co,
}
static PyObject *
module_dict_for_exec(PyObject *name)
module_dict_for_exec(PyThreadState *tstate, PyObject *name)
{
_Py_IDENTIFIER(__builtins__);
PyObject *m, *d = NULL;
m = PyImport_AddModuleObject(name);
m = import_add_module(tstate, name);
if (m == NULL)
return NULL;
/* If the module is being reloaded, we get the old module back
and re-use its dict to exec the new code. */
d = PyModule_GetDict(m);
if (_PyDict_GetItemIdWithError(d, &PyId___builtins__) == NULL) {
if (PyErr_Occurred() ||
if (_PyErr_Occurred(tstate) ||
_PyDict_SetItemId(d, &PyId___builtins__,
PyEval_GetBuiltins()) != 0)
{
remove_module(name);
remove_module(tstate, name);
return NULL;
}
}
@ -969,22 +1007,23 @@ module_dict_for_exec(PyObject *name)
}
static PyObject *
exec_code_in_module(PyObject *name, PyObject *module_dict, PyObject *code_object)
exec_code_in_module(PyThreadState *tstate, PyObject *name,
PyObject *module_dict, PyObject *code_object)
{
PyObject *v, *m;
v = PyEval_EvalCode(code_object, module_dict, module_dict);
if (v == NULL) {
remove_module(name);
remove_module(tstate, name);
return NULL;
}
Py_DECREF(v);
m = PyImport_GetModule(name);
if (m == NULL && !PyErr_Occurred()) {
PyErr_Format(PyExc_ImportError,
"Loaded module %R not found in sys.modules",
name);
m = import_get_module(tstate, name);
if (m == NULL && !_PyErr_Occurred(tstate)) {
_PyErr_Format(tstate, PyExc_ImportError,
"Loaded module %R not found in sys.modules",
name);
}
return m;
@ -994,11 +1033,11 @@ PyObject*
PyImport_ExecCodeModuleObject(PyObject *name, PyObject *co, PyObject *pathname,
PyObject *cpathname)
{
PyThreadState *tstate = _PyThreadState_GET();
PyObject *d, *external, *res;
PyInterpreterState *interp = _PyInterpreterState_GET_UNSAFE();
_Py_IDENTIFIER(_fix_up_module);
d = module_dict_for_exec(name);
d = module_dict_for_exec(tstate, name);
if (d == NULL) {
return NULL;
}
@ -1006,7 +1045,8 @@ PyImport_ExecCodeModuleObject(PyObject *name, PyObject *co, PyObject *pathname,
if (pathname == NULL) {
pathname = ((PyCodeObject *)co)->co_filename;
}
external = PyObject_GetAttrString(interp->importlib, "_bootstrap_external");
external = PyObject_GetAttrString(tstate->interp->importlib,
"_bootstrap_external");
if (external == NULL)
return NULL;
res = _PyObject_CallMethodIdObjArgs(external,
@ -1015,7 +1055,7 @@ PyImport_ExecCodeModuleObject(PyObject *name, PyObject *co, PyObject *pathname,
Py_DECREF(external);
if (res != NULL) {
Py_DECREF(res);
res = exec_code_in_module(name, d, co);
res = exec_code_in_module(tstate, name, d, co);
}
return res;
}
@ -1114,8 +1154,8 @@ is_builtin(PyObject *name)
Returns a borrowed reference. */
static PyObject *
get_path_importer(PyObject *path_importer_cache, PyObject *path_hooks,
PyObject *p)
get_path_importer(PyThreadState *tstate, PyObject *path_importer_cache,
PyObject *path_hooks, PyObject *p)
{
PyObject *importer;
Py_ssize_t j, nhooks;
@ -1129,7 +1169,7 @@ get_path_importer(PyObject *path_importer_cache, PyObject *path_hooks,
return NULL; /* Shouldn't happen */
importer = PyDict_GetItemWithError(path_importer_cache, p);
if (importer != NULL || PyErr_Occurred())
if (importer != NULL || _PyErr_Occurred(tstate))
return importer;
/* set path_importer_cache[p] to None to avoid recursion */
@ -1144,10 +1184,10 @@ get_path_importer(PyObject *path_importer_cache, PyObject *path_hooks,
if (importer != NULL)
break;
if (!PyErr_ExceptionMatches(PyExc_ImportError)) {
if (!_PyErr_ExceptionMatches(tstate, PyExc_ImportError)) {
return NULL;
}
PyErr_Clear();
_PyErr_Clear(tstate);
}
if (importer == NULL) {
return Py_None;
@ -1162,13 +1202,15 @@ get_path_importer(PyObject *path_importer_cache, PyObject *path_hooks,
}
PyObject *
PyImport_GetImporter(PyObject *path) {
PyImport_GetImporter(PyObject *path)
{
PyThreadState *tstate = _PyThreadState_GET();
PyObject *importer=NULL, *path_importer_cache=NULL, *path_hooks=NULL;
path_importer_cache = PySys_GetObject("path_importer_cache");
path_hooks = PySys_GetObject("path_hooks");
if (path_importer_cache != NULL && path_hooks != NULL) {
importer = get_path_importer(path_importer_cache,
importer = get_path_importer(tstate, path_importer_cache,
path_hooks, path);
}
Py_XINCREF(importer); /* get_path_importer returns a borrowed reference */
@ -1188,6 +1230,7 @@ static PyObject *
_imp_create_builtin(PyObject *module, PyObject *spec)
/*[clinic end generated code: output=ace7ff22271e6f39 input=37f966f890384e47]*/
{
PyThreadState *tstate = _PyThreadState_GET();
struct _inittab *p;
PyObject *name;
const char *namestr;
@ -1199,7 +1242,7 @@ _imp_create_builtin(PyObject *module, PyObject *spec)
}
mod = _PyImport_FindExtensionObject(name, name);
if (mod || PyErr_Occurred()) {
if (mod || _PyErr_Occurred(tstate)) {
Py_DECREF(name);
Py_XINCREF(mod);
return mod;
@ -1211,7 +1254,7 @@ _imp_create_builtin(PyObject *module, PyObject *spec)
return NULL;
}
PyObject *modules = NULL;
PyObject *modules = tstate->interp->modules;
for (p = PyImport_Inittab; p->name != NULL; p++) {
PyModuleDef *def;
if (_PyUnicode_EqualToASCIIString(name, p->name)) {
@ -1237,9 +1280,6 @@ _imp_create_builtin(PyObject *module, PyObject *spec)
return NULL;
}
def->m_base.m_init = p->initfunc;
if (modules == NULL) {
modules = PyImport_GetModuleDict();
}
if (_PyImport_FixupExtensionObject(mod, name, name,
modules) < 0) {
Py_DECREF(name);
@ -1328,6 +1368,7 @@ is_frozen_package(PyObject *name)
int
PyImport_ImportFrozenModuleObject(PyObject *name)
{
PyThreadState *tstate = _PyThreadState_GET();
const struct _frozen *p;
PyObject *co, *m, *d;
int ispackage;
@ -1338,9 +1379,9 @@ PyImport_ImportFrozenModuleObject(PyObject *name)
if (p == NULL)
return 0;
if (p->code == NULL) {
PyErr_Format(PyExc_ImportError,
"Excluded frozen object named %R",
name);
_PyErr_Format(tstate, PyExc_ImportError,
"Excluded frozen object named %R",
name);
return -1;
}
size = p->size;
@ -1351,16 +1392,16 @@ PyImport_ImportFrozenModuleObject(PyObject *name)
if (co == NULL)
return -1;
if (!PyCode_Check(co)) {
PyErr_Format(PyExc_TypeError,
"frozen object %R is not a code object",
name);
_PyErr_Format(tstate, PyExc_TypeError,
"frozen object %R is not a code object",
name);
goto err_return;
}
if (ispackage) {
/* Set __path__ to the empty list */
PyObject *l;
int err;
m = PyImport_AddModuleObject(name);
m = import_add_module(tstate, name);
if (m == NULL)
goto err_return;
d = PyModule_GetDict(m);
@ -1373,16 +1414,18 @@ PyImport_ImportFrozenModuleObject(PyObject *name)
if (err != 0)
goto err_return;
}
d = module_dict_for_exec(name);
d = module_dict_for_exec(tstate, name);
if (d == NULL) {
goto err_return;
}
m = exec_code_in_module(name, d, co);
if (m == NULL)
m = exec_code_in_module(tstate, name, d, co);
if (m == NULL) {
goto err_return;
}
Py_DECREF(co);
Py_DECREF(m);
return 1;
err_return:
Py_DECREF(co);
return -1;
@ -1438,7 +1481,7 @@ PyImport_ImportModuleNoBlock(const char *name)
/* Remove importlib frames from the traceback,
* except in Verbose mode. */
static void
remove_importlib_frames(PyInterpreterState *interp)
remove_importlib_frames(PyThreadState *tstate)
{
const char *importlib_filename = "<frozen importlib._bootstrap>";
const char *external_filename = "<frozen importlib._bootstrap_external>";
@ -1452,8 +1495,8 @@ remove_importlib_frames(PyInterpreterState *interp)
from the traceback. We always trim chunks
which end with a call to "_call_with_frames_removed". */
PyErr_Fetch(&exception, &value, &base_tb);
if (!exception || interp->config.verbose) {
_PyErr_Fetch(tstate, &exception, &value, &base_tb);
if (!exception || tstate->interp->config.verbose) {
goto done;
}
@ -1492,12 +1535,12 @@ remove_importlib_frames(PyInterpreterState *interp)
tb = next;
}
done:
PyErr_Restore(exception, value, base_tb);
_PyErr_Restore(tstate, exception, value, base_tb);
}
static PyObject *
resolve_name(PyObject *name, PyObject *globals, int level)
resolve_name(PyThreadState *tstate, PyObject *name, PyObject *globals, int level)
{
_Py_IDENTIFIER(__spec__);
_Py_IDENTIFIER(__package__);
@ -1512,29 +1555,30 @@ resolve_name(PyObject *name, PyObject *globals, int level)
int level_up;
if (globals == NULL) {
PyErr_SetString(PyExc_KeyError, "'__name__' not in globals");
_PyErr_SetString(tstate, PyExc_KeyError, "'__name__' not in globals");
goto error;
}
if (!PyDict_Check(globals)) {
PyErr_SetString(PyExc_TypeError, "globals must be a dict");
_PyErr_SetString(tstate, PyExc_TypeError, "globals must be a dict");
goto error;
}
package = _PyDict_GetItemIdWithError(globals, &PyId___package__);
if (package == Py_None) {
package = NULL;
}
else if (package == NULL && PyErr_Occurred()) {
else if (package == NULL && _PyErr_Occurred(tstate)) {
goto error;
}
spec = _PyDict_GetItemIdWithError(globals, &PyId___spec__);
if (spec == NULL && PyErr_Occurred()) {
if (spec == NULL && _PyErr_Occurred(tstate)) {
goto error;
}
if (package != NULL) {
Py_INCREF(package);
if (!PyUnicode_Check(package)) {
PyErr_SetString(PyExc_TypeError, "package must be a string");
_PyErr_SetString(tstate, PyExc_TypeError,
"package must be a string");
goto error;
}
else if (spec != NULL && spec != Py_None) {
@ -1563,8 +1607,8 @@ resolve_name(PyObject *name, PyObject *globals, int level)
goto error;
}
else if (!PyUnicode_Check(package)) {
PyErr_SetString(PyExc_TypeError,
"__spec__.parent must be a string");
_PyErr_SetString(tstate, PyExc_TypeError,
"__spec__.parent must be a string");
goto error;
}
}
@ -1577,22 +1621,24 @@ resolve_name(PyObject *name, PyObject *globals, int level)
package = _PyDict_GetItemIdWithError(globals, &PyId___name__);
if (package == NULL) {
if (!PyErr_Occurred()) {
PyErr_SetString(PyExc_KeyError, "'__name__' not in globals");
if (!_PyErr_Occurred(tstate)) {
_PyErr_SetString(tstate, PyExc_KeyError,
"'__name__' not in globals");
}
goto error;
}
Py_INCREF(package);
if (!PyUnicode_Check(package)) {
PyErr_SetString(PyExc_TypeError, "__name__ must be a string");
_PyErr_SetString(tstate, PyExc_TypeError,
"__name__ must be a string");
goto error;
}
if (_PyDict_GetItemIdWithError(globals, &PyId___path__) == NULL) {
Py_ssize_t dot;
if (PyErr_Occurred() || PyUnicode_READY(package) < 0) {
if (_PyErr_Occurred(tstate) || PyUnicode_READY(package) < 0) {
goto error;
}
@ -1614,8 +1660,9 @@ resolve_name(PyObject *name, PyObject *globals, int level)
last_dot = PyUnicode_GET_LENGTH(package);
if (last_dot == 0) {
PyErr_SetString(PyExc_ImportError,
"attempted relative import with no known parent package");
_PyErr_SetString(tstate, PyExc_ImportError,
"attempted relative import "
"with no known parent package");
goto error;
}
@ -1625,9 +1672,9 @@ resolve_name(PyObject *name, PyObject *globals, int level)
goto error;
}
else if (last_dot == -1) {
PyErr_SetString(PyExc_ValueError,
"attempted relative import beyond top-level "
"package");
_PyErr_SetString(tstate, PyExc_ValueError,
"attempted relative import beyond top-level "
"package");
goto error;
}
}
@ -1648,11 +1695,11 @@ resolve_name(PyObject *name, PyObject *globals, int level)
}
static PyObject *
import_find_and_load(PyObject *abs_name)
import_find_and_load(PyThreadState *tstate, PyObject *abs_name)
{
_Py_IDENTIFIER(_find_and_load);
PyObject *mod = NULL;
PyInterpreterState *interp = _PyInterpreterState_GET_UNSAFE();
PyInterpreterState *interp = tstate->interp;
int import_time = interp->config.import_time;
static int import_level;
static _PyTime_t accumulated;
@ -1719,16 +1766,17 @@ PyImport_ImportModuleLevelObject(PyObject *name, PyObject *globals,
PyObject *locals, PyObject *fromlist,
int level)
{
PyThreadState *tstate = _PyThreadState_GET();
_Py_IDENTIFIER(_handle_fromlist);
PyObject *abs_name = NULL;
PyObject *final_mod = NULL;
PyObject *mod = NULL;
PyObject *package = NULL;
PyInterpreterState *interp = _PyInterpreterState_GET_UNSAFE();
PyInterpreterState *interp = tstate->interp;
int has_from;
if (name == NULL) {
PyErr_SetString(PyExc_ValueError, "Empty module name");
_PyErr_SetString(tstate, PyExc_ValueError, "Empty module name");
goto error;
}
@ -1736,33 +1784,34 @@ PyImport_ImportModuleLevelObject(PyObject *name, PyObject *globals,
for added performance. */
if (!PyUnicode_Check(name)) {
PyErr_SetString(PyExc_TypeError, "module name must be a string");
_PyErr_SetString(tstate, PyExc_TypeError,
"module name must be a string");
goto error;
}
if (PyUnicode_READY(name) < 0) {
goto error;
}
if (level < 0) {
PyErr_SetString(PyExc_ValueError, "level must be >= 0");
_PyErr_SetString(tstate, PyExc_ValueError, "level must be >= 0");
goto error;
}
if (level > 0) {
abs_name = resolve_name(name, globals, level);
abs_name = resolve_name(tstate, name, globals, level);
if (abs_name == NULL)
goto error;
}
else { /* level == 0 */
if (PyUnicode_GET_LENGTH(name) == 0) {
PyErr_SetString(PyExc_ValueError, "Empty module name");
_PyErr_SetString(tstate, PyExc_ValueError, "Empty module name");
goto error;
}
abs_name = name;
Py_INCREF(abs_name);
}
mod = PyImport_GetModule(abs_name);
if (mod == NULL && PyErr_Occurred()) {
mod = import_get_module(tstate, abs_name);
if (mod == NULL && _PyErr_Occurred(tstate)) {
goto error;
}
@ -1791,7 +1840,7 @@ PyImport_ImportModuleLevelObject(PyObject *name, PyObject *globals,
}
else {
Py_XDECREF(mod);
mod = import_find_and_load(abs_name);
mod = import_find_and_load(tstate, abs_name);
if (mod == NULL) {
goto error;
}
@ -1838,13 +1887,13 @@ PyImport_ImportModuleLevelObject(PyObject *name, PyObject *globals,
goto error;
}
final_mod = PyImport_GetModule(to_return);
final_mod = import_get_module(tstate, to_return);
Py_DECREF(to_return);
if (final_mod == NULL) {
if (!PyErr_Occurred()) {
PyErr_Format(PyExc_KeyError,
"%R not in sys.modules as expected",
to_return);
if (!_PyErr_Occurred(tstate)) {
_PyErr_Format(tstate, PyExc_KeyError,
"%R not in sys.modules as expected",
to_return);
}
goto error;
}
@ -1878,7 +1927,7 @@ PyImport_ImportModuleLevelObject(PyObject *name, PyObject *globals,
Py_XDECREF(mod);
Py_XDECREF(package);
if (final_mod == NULL) {
remove_importlib_frames(interp);
remove_importlib_frames(tstate);
}
return final_mod;
}
@ -1937,6 +1986,7 @@ PyImport_ReloadModule(PyObject *m)
PyObject *
PyImport_Import(PyObject *module_name)
{
PyThreadState *tstate = _PyThreadState_GET();
static PyObject *silly_list = NULL;
static PyObject *builtins_str = NULL;
static PyObject *import_str = NULL;
@ -1980,8 +2030,9 @@ PyImport_Import(PyObject *module_name)
/* Get the __import__ function from the builtins */
if (PyDict_Check(builtins)) {
import = PyObject_GetItem(builtins, import_str);
if (import == NULL)
PyErr_SetObject(PyExc_KeyError, import_str);
if (import == NULL) {
_PyErr_SetObject(tstate, PyExc_KeyError, import_str);
}
}
else
import = PyObject_GetAttr(builtins, import_str);
@ -1997,9 +2048,9 @@ PyImport_Import(PyObject *module_name)
goto err;
Py_DECREF(r);
r = PyImport_GetModule(module_name);
if (r == NULL && !PyErr_Occurred()) {
PyErr_SetObject(PyExc_KeyError, module_name);
r = import_get_module(tstate, module_name);
if (r == NULL && !_PyErr_Occurred(tstate)) {
_PyErr_SetObject(tstate, PyExc_KeyError, module_name);
}
err:
@ -2060,6 +2111,7 @@ static PyObject *
_imp_init_frozen_impl(PyObject *module, PyObject *name)
/*[clinic end generated code: output=fc0511ed869fd69c input=13019adfc04f3fb3]*/
{
PyThreadState *tstate = _PyThreadState_GET();
int ret;
PyObject *m;
@ -2069,7 +2121,7 @@ _imp_init_frozen_impl(PyObject *module, PyObject *name)
if (ret == 0) {
Py_RETURN_NONE;
}
m = PyImport_AddModuleObject(name);
m = import_add_module(tstate, name);
Py_XINCREF(m);
return m;
}

15
Python/pylifecycle.c
View file

@ -6,6 +6,7 @@
#undef Yield /* undefine macro conflicting with <winbase.h> */
#include "pycore_ceval.h"
#include "pycore_context.h"
#include "pycore_import.h" /* _PyImport_FindBuiltin */
#include "pycore_initconfig.h"
#include "pycore_fileutils.h"
#include "pycore_hamt.h"
@ -197,17 +198,17 @@ init_importlib(PyInterpreterState *interp, PyObject *sysmod)
}
static PyStatus
init_importlib_external(PyInterpreterState *interp)
init_importlib_external(PyThreadState *tstate)
{
PyObject *value;
value = PyObject_CallMethod(interp->importlib,
value = PyObject_CallMethod(tstate->interp->importlib,
"_install_external_importers", "");
if (value == NULL) {
PyErr_Print();
return _PyStatus_ERR("external importer setup failed");
}
Py_DECREF(value);
return _PyImportZip_Init(interp);
return _PyImportZip_Init(tstate);
}
/* Helper functions to better handle the legacy C locale
@ -924,7 +925,7 @@ pyinit_main(_PyRuntimeState *runtime, PyInterpreterState *interp)
return _PyStatus_ERR("can't finish initializing sys");
}
PyStatus status = init_importlib_external(interp);
PyStatus status = init_importlib_external(tstate);
if (_PyStatus_EXCEPTION(status)) {
return status;
}
@ -1449,7 +1450,7 @@ new_interpreter(PyThreadState **tstate_p)
}
interp->modules = modules;
PyObject *sysmod = _PyImport_FindBuiltin("sys", modules);
PyObject *sysmod = _PyImport_FindBuiltin(tstate, "sys");
if (sysmod != NULL) {
interp->sysdict = PyModule_GetDict(sysmod);
if (interp->sysdict == NULL) {
@ -1465,7 +1466,7 @@ new_interpreter(PyThreadState **tstate_p)
goto handle_error;
}
PyObject *bimod = _PyImport_FindBuiltin("builtins", modules);
PyObject *bimod = _PyImport_FindBuiltin(tstate, "builtins");
if (bimod != NULL) {
interp->builtins = PyModule_GetDict(bimod);
if (interp->builtins == NULL)
@ -1497,7 +1498,7 @@ new_interpreter(PyThreadState **tstate_p)
return status;
}
status = init_importlib_external(interp);
status = init_importlib_external(tstate);
if (_PyStatus_EXCEPTION(status)) {
return status;
}

40
Python/pystate.c
View file

@ -741,28 +741,32 @@ PyState_RemoveModule(struct PyModuleDef* def)
return PyList_SetItem(state->modules_by_index, index, Py_None);
}
/* used by import.c:PyImport_Cleanup */
/* Used by PyImport_Cleanup() */
void
_PyState_ClearModules(void)
_PyInterpreterState_ClearModules(PyInterpreterState *interp)
{
PyInterpreterState *state = _PyInterpreterState_GET_UNSAFE();
if (state->modules_by_index) {
Py_ssize_t i;
for (i = 0; i < PyList_GET_SIZE(state->modules_by_index); i++) {
PyObject *m = PyList_GET_ITEM(state->modules_by_index, i);
if (PyModule_Check(m)) {
/* cleanup the saved copy of module dicts */
PyModuleDef *md = PyModule_GetDef(m);
if (md)
Py_CLEAR(md->m_base.m_copy);
if (!interp->modules_by_index) {
return;
}
Py_ssize_t i;
for (i = 0; i < PyList_GET_SIZE(interp->modules_by_index); i++) {
PyObject *m = PyList_GET_ITEM(interp->modules_by_index, i);
if (PyModule_Check(m)) {
/* cleanup the saved copy of module dicts */
PyModuleDef *md = PyModule_GetDef(m);
if (md) {
Py_CLEAR(md->m_base.m_copy);
}
}
/* Setting modules_by_index to NULL could be dangerous, so we
clear the list instead. */
if (PyList_SetSlice(state->modules_by_index,
0, PyList_GET_SIZE(state->modules_by_index),
NULL))
PyErr_WriteUnraisable(state->modules_by_index);
}
/* Setting modules_by_index to NULL could be dangerous, so we
clear the list instead. */
if (PyList_SetSlice(interp->modules_by_index,
0, PyList_GET_SIZE(interp->modules_by_index),
NULL)) {
PyErr_WriteUnraisable(interp->modules_by_index);
}
}