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cpython/Modules/_testinternalcapi.c

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/*
* C Extension module to test Python internal C APIs (Include/internal).
*/
#ifndef Py_BUILD_CORE_BUILTIN
# define Py_BUILD_CORE_MODULE 1
#endif
/* Always enable assertions */
#undef NDEBUG
#include "Python.h"
#include "pycore_backoff.h" // JUMP_BACKWARD_INITIAL_VALUE
#include "pycore_bitutils.h" // _Py_bswap32()
#include "pycore_bytesobject.h" // _PyBytes_Find()
#include "pycore_ceval.h" // _PyEval_AddPendingCall()
#include "pycore_compile.h" // _PyCompile_CodeGen()
#include "pycore_context.h" // _PyContext_NewHamtForTests()
#include "pycore_dict.h" // _PyManagedDictPointer_GetValues()
#include "pycore_fileutils.h" // _Py_normpath()
#include "pycore_flowgraph.h" // _PyCompile_OptimizeCfg()
#include "pycore_frame.h" // _PyInterpreterFrame
#include "pycore_gc.h" // PyGC_Head
#include "pycore_hashtable.h" // _Py_hashtable_new()
#include "pycore_initconfig.h" // _Py_GetConfigsAsDict()
#include "pycore_instruction_sequence.h" // _PyInstructionSequence_New()
#include "pycore_interp.h" // _PyInterpreterState_GetConfigCopy()
#include "pycore_long.h" // _PyLong_Sign()
#include "pycore_object.h" // _PyObject_IsFreed()
#include "pycore_optimizer.h" // _Py_UopsSymbol, etc.
#include "pycore_pathconfig.h" // _PyPathConfig_ClearGlobal()
#include "pycore_pyerrors.h" // _PyErr_ChainExceptions1()
#include "pycore_pylifecycle.h" // _PyInterpreterConfig_AsDict()
#include "pycore_pystate.h" // _PyThreadState_GET()
#include "clinic/_testinternalcapi.c.h"
// Include test definitions from _testinternalcapi/
#include "_testinternalcapi/parts.h"
#define MODULE_NAME "_testinternalcapi"
static PyObject *
_get_current_module(void)
{
// We ensured it was imported in _run_script().
PyObject *name = PyUnicode_FromString(MODULE_NAME);
if (name == NULL) {
return NULL;
}
PyObject *mod = PyImport_GetModule(name);
Py_DECREF(name);
if (mod == NULL) {
return NULL;
}
assert(mod != Py_None);
return mod;
}
/* module state *************************************************************/
typedef struct {
PyObject *record_list;
} module_state;
static inline module_state *
get_module_state(PyObject *mod)
{
assert(mod != NULL);
module_state *state = PyModule_GetState(mod);
assert(state != NULL);
return state;
}
static int
traverse_module_state(module_state *state, visitproc visit, void *arg)
{
Py_VISIT(state->record_list);
return 0;
}
static int
clear_module_state(module_state *state)
{
Py_CLEAR(state->record_list);
return 0;
}
/* module functions *********************************************************/
/*[clinic input]
module _testinternalcapi
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=7bb583d8c9eb9a78]*/
static PyObject *
get_configs(PyObject *self, PyObject *Py_UNUSED(args))
{
return _Py_GetConfigsAsDict();
}
static PyObject*
get_recursion_depth(PyObject *self, PyObject *Py_UNUSED(args))
{
PyThreadState *tstate = _PyThreadState_GET();
return PyLong_FromLong(tstate->py_recursion_limit - tstate->py_recursion_remaining);
}
static PyObject*
get_c_recursion_remaining(PyObject *self, PyObject *Py_UNUSED(args))
{
PyThreadState *tstate = _PyThreadState_GET();
return PyLong_FromLong(tstate->c_recursion_remaining);
}
static PyObject*
test_bswap(PyObject *self, PyObject *Py_UNUSED(args))
{
uint16_t u16 = _Py_bswap16(UINT16_C(0x3412));
if (u16 != UINT16_C(0x1234)) {
PyErr_Format(PyExc_AssertionError,
"_Py_bswap16(0x3412) returns %u", u16);
return NULL;
}
uint32_t u32 = _Py_bswap32(UINT32_C(0x78563412));
if (u32 != UINT32_C(0x12345678)) {
PyErr_Format(PyExc_AssertionError,
"_Py_bswap32(0x78563412) returns %lu", u32);
return NULL;
}
uint64_t u64 = _Py_bswap64(UINT64_C(0xEFCDAB9078563412));
if (u64 != UINT64_C(0x1234567890ABCDEF)) {
PyErr_Format(PyExc_AssertionError,
"_Py_bswap64(0xEFCDAB9078563412) returns %llu", u64);
return NULL;
}
Py_RETURN_NONE;
}
static int
check_popcount(uint32_t x, int expected)
{
// Use volatile to prevent the compiler to optimize out the whole test
volatile uint32_t u = x;
int bits = _Py_popcount32(u);
if (bits != expected) {
PyErr_Format(PyExc_AssertionError,
"_Py_popcount32(%lu) returns %i, expected %i",
(unsigned long)x, bits, expected);
return -1;
}
return 0;
}
static PyObject*
test_popcount(PyObject *self, PyObject *Py_UNUSED(args))
{
#define CHECK(X, RESULT) \
do { \
if (check_popcount(X, RESULT) < 0) { \
return NULL; \
} \
} while (0)
CHECK(0, 0);
CHECK(1, 1);
CHECK(0x08080808, 4);
CHECK(0x10000001, 2);
CHECK(0x10101010, 4);
CHECK(0x10204080, 4);
CHECK(0xDEADCAFE, 22);
CHECK(0xFFFFFFFF, 32);
Py_RETURN_NONE;
#undef CHECK
}
static int
check_bit_length(unsigned long x, int expected)
{
// Use volatile to prevent the compiler to optimize out the whole test
volatile unsigned long u = x;
int len = _Py_bit_length(u);
if (len != expected) {
PyErr_Format(PyExc_AssertionError,
"_Py_bit_length(%lu) returns %i, expected %i",
x, len, expected);
return -1;
}
return 0;
}
static PyObject*
test_bit_length(PyObject *self, PyObject *Py_UNUSED(args))
{
#define CHECK(X, RESULT) \
do { \
if (check_bit_length(X, RESULT) < 0) { \
return NULL; \
} \
} while (0)
CHECK(0, 0);
CHECK(1, 1);
CHECK(0x1000, 13);
CHECK(0x1234, 13);
CHECK(0x54321, 19);
CHECK(0x7FFFFFFF, 31);
CHECK(0xFFFFFFFF, 32);
Py_RETURN_NONE;
#undef CHECK
}
#define TO_PTR(ch) ((void*)(uintptr_t)ch)
#define FROM_PTR(ptr) ((uintptr_t)ptr)
#define VALUE(key) (1 + ((int)(key) - 'a'))
static Py_uhash_t
hash_char(const void *key)
{
char ch = (char)FROM_PTR(key);
return ch;
}
static int
hashtable_cb(_Py_hashtable_t *table,
const void *key_ptr, const void *value_ptr,
void *user_data)
{
int *count = (int *)user_data;
char key = (char)FROM_PTR(key_ptr);
int value = (int)FROM_PTR(value_ptr);
assert(value == VALUE(key));
*count += 1;
return 0;
}
static PyObject*
test_hashtable(PyObject *self, PyObject *Py_UNUSED(args))
{
_Py_hashtable_t *table = _Py_hashtable_new(hash_char,
_Py_hashtable_compare_direct);
if (table == NULL) {
return PyErr_NoMemory();
}
// Using an newly allocated table must not crash
assert(table->nentries == 0);
assert(table->nbuckets > 0);
assert(_Py_hashtable_get(table, TO_PTR('x')) == NULL);
// Test _Py_hashtable_set()
char key;
for (key='a'; key <= 'z'; key++) {
int value = VALUE(key);
if (_Py_hashtable_set(table, TO_PTR(key), TO_PTR(value)) < 0) {
_Py_hashtable_destroy(table);
return PyErr_NoMemory();
}
}
assert(table->nentries == 26);
assert(table->nbuckets > table->nentries);
// Test _Py_hashtable_get_entry()
for (key='a'; key <= 'z'; key++) {
_Py_hashtable_entry_t *entry = _Py_hashtable_get_entry(table, TO_PTR(key));
assert(entry != NULL);
assert(entry->key == TO_PTR(key));
assert(entry->value == TO_PTR(VALUE(key)));
}
// Test _Py_hashtable_get()
for (key='a'; key <= 'z'; key++) {
void *value_ptr = _Py_hashtable_get(table, TO_PTR(key));
assert((int)FROM_PTR(value_ptr) == VALUE(key));
}
// Test _Py_hashtable_steal()
key = 'p';
void *value_ptr = _Py_hashtable_steal(table, TO_PTR(key));
assert((int)FROM_PTR(value_ptr) == VALUE(key));
assert(table->nentries == 25);
assert(_Py_hashtable_get_entry(table, TO_PTR(key)) == NULL);
// Test _Py_hashtable_foreach()
int count = 0;
int res = _Py_hashtable_foreach(table, hashtable_cb, &count);
assert(res == 0);
assert(count == 25);
// Test _Py_hashtable_clear()
_Py_hashtable_clear(table);
assert(table->nentries == 0);
assert(table->nbuckets > 0);
assert(_Py_hashtable_get(table, TO_PTR('x')) == NULL);
_Py_hashtable_destroy(table);
Py_RETURN_NONE;
}
static PyObject *
test_get_config(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(args))
{
PyConfig config;
PyConfig_InitIsolatedConfig(&config);
if (_PyInterpreterState_GetConfigCopy(&config) < 0) {
PyConfig_Clear(&config);
return NULL;
}
PyObject *dict = _PyConfig_AsDict(&config);
PyConfig_Clear(&config);
return dict;
}
static PyObject *
test_set_config(PyObject *Py_UNUSED(self), PyObject *dict)
{
PyConfig config;
PyConfig_InitIsolatedConfig(&config);
if (_PyConfig_FromDict(&config, dict) < 0) {
goto error;
}
if (_PyInterpreterState_SetConfig(&config) < 0) {
goto error;
}
PyConfig_Clear(&config);
Py_RETURN_NONE;
error:
PyConfig_Clear(&config);
return NULL;
}
static PyObject *
test_reset_path_config(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(arg))
{
_PyPathConfig_ClearGlobal();
Py_RETURN_NONE;
}
static int
check_edit_cost(const char *a, const char *b, Py_ssize_t expected)
{
int ret = -1;
PyObject *a_obj = NULL;
PyObject *b_obj = NULL;
a_obj = PyUnicode_FromString(a);
if (a_obj == NULL) {
goto exit;
}
b_obj = PyUnicode_FromString(b);
if (b_obj == NULL) {
goto exit;
}
Py_ssize_t result = _Py_UTF8_Edit_Cost(a_obj, b_obj, -1);
if (result != expected) {
PyErr_Format(PyExc_AssertionError,
"Edit cost from '%s' to '%s' returns %zd, expected %zd",
a, b, result, expected);
goto exit;
}
// Check that smaller max_edits thresholds are exceeded.
Py_ssize_t max_edits = result;
while (max_edits > 0) {
max_edits /= 2;
Py_ssize_t result2 = _Py_UTF8_Edit_Cost(a_obj, b_obj, max_edits);
if (result2 <= max_edits) {
PyErr_Format(PyExc_AssertionError,
"Edit cost from '%s' to '%s' (threshold %zd) "
"returns %zd, expected greater than %zd",
a, b, max_edits, result2, max_edits);
goto exit;
}
}
// Check that bigger max_edits thresholds don't change anything
Py_ssize_t result3 = _Py_UTF8_Edit_Cost(a_obj, b_obj, result * 2 + 1);
if (result3 != result) {
PyErr_Format(PyExc_AssertionError,
"Edit cost from '%s' to '%s' (threshold %zd) "
"returns %zd, expected %zd",
a, b, result * 2, result3, result);
goto exit;
}
ret = 0;
exit:
Py_XDECREF(a_obj);
Py_XDECREF(b_obj);
return ret;
}
static PyObject *
test_edit_cost(PyObject *self, PyObject *Py_UNUSED(args))
{
#define CHECK(a, b, n) do { \
if (check_edit_cost(a, b, n) < 0) { \
return NULL; \
} \
} while (0) \
CHECK("", "", 0);
CHECK("", "a", 2);
CHECK("a", "A", 1);
CHECK("Apple", "Aple", 2);
CHECK("Banana", "B@n@n@", 6);
CHECK("Cherry", "Cherry!", 2);
CHECK("---0---", "------", 2);
CHECK("abc", "y", 6);
CHECK("aa", "bb", 4);
CHECK("aaaaa", "AAAAA", 5);
CHECK("wxyz", "wXyZ", 2);
CHECK("wxyz", "wXyZ123", 8);
CHECK("Python", "Java", 12);
CHECK("Java", "C#", 8);
CHECK("AbstractFoobarManager", "abstract_foobar_manager", 3+2*2);
CHECK("CPython", "PyPy", 10);
CHECK("CPython", "pypy", 11);
CHECK("AttributeError", "AttributeErrop", 2);
CHECK("AttributeError", "AttributeErrorTests", 10);
#undef CHECK
Py_RETURN_NONE;
}
static int
check_bytes_find(const char *haystack0, const char *needle0,
int offset, Py_ssize_t expected)
{
Py_ssize_t len_haystack = strlen(haystack0);
Py_ssize_t len_needle = strlen(needle0);
Py_ssize_t result_1 = _PyBytes_Find(haystack0, len_haystack,
needle0, len_needle, offset);
if (result_1 != expected) {
PyErr_Format(PyExc_AssertionError,
"Incorrect result_1: '%s' in '%s' (offset=%zd)",
needle0, haystack0, offset);
return -1;
}
// Allocate new buffer with no NULL terminator.
char *haystack = PyMem_Malloc(len_haystack);
if (haystack == NULL) {
PyErr_NoMemory();
return -1;
}
char *needle = PyMem_Malloc(len_needle);
if (needle == NULL) {
PyMem_Free(haystack);
PyErr_NoMemory();
return -1;
}
memcpy(haystack, haystack0, len_haystack);
memcpy(needle, needle0, len_needle);
Py_ssize_t result_2 = _PyBytes_Find(haystack, len_haystack,
needle, len_needle, offset);
PyMem_Free(haystack);
PyMem_Free(needle);
if (result_2 != expected) {
PyErr_Format(PyExc_AssertionError,
"Incorrect result_2: '%s' in '%s' (offset=%zd)",
needle0, haystack0, offset);
return -1;
}
return 0;
}
static int
check_bytes_find_large(Py_ssize_t len_haystack, Py_ssize_t len_needle,
const char *needle)
{
char *zeros = PyMem_RawCalloc(len_haystack, 1);
if (zeros == NULL) {
PyErr_NoMemory();
return -1;
}
Py_ssize_t res = _PyBytes_Find(zeros, len_haystack, needle, len_needle, 0);
PyMem_RawFree(zeros);
if (res != -1) {
PyErr_Format(PyExc_AssertionError,
"check_bytes_find_large(%zd, %zd) found %zd",
len_haystack, len_needle, res);
return -1;
}
return 0;
}
static PyObject *
test_bytes_find(PyObject *self, PyObject *Py_UNUSED(args))
{
#define CHECK(H, N, O, E) do { \
if (check_bytes_find(H, N, O, E) < 0) { \
return NULL; \
} \
} while (0)
CHECK("", "", 0, 0);
CHECK("Python", "", 0, 0);
CHECK("Python", "", 3, 3);
CHECK("Python", "", 6, 6);
CHECK("Python", "yth", 0, 1);
CHECK("ython", "yth", 1, 1);
CHECK("thon", "yth", 2, -1);
CHECK("Python", "thon", 0, 2);
CHECK("ython", "thon", 1, 2);
CHECK("thon", "thon", 2, 2);
CHECK("hon", "thon", 3, -1);
CHECK("Pytho", "zz", 0, -1);
CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "ab", 0, -1);
CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "ba", 0, -1);
CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "bb", 0, -1);
CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab", "ab", 0, 30);
CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaba", "ba", 0, 30);
CHECK("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaabb", "bb", 0, 30);
#undef CHECK
// Hunt for segfaults
// n, m chosen here so that (n - m) % (m + 1) == 0
// This would make default_find in fastsearch.h access haystack[n].
if (check_bytes_find_large(2048, 2, "ab") < 0) {
return NULL;
}
if (check_bytes_find_large(4096, 16, "0123456789abcdef") < 0) {
return NULL;
}
if (check_bytes_find_large(8192, 2, "ab") < 0) {
return NULL;
}
if (check_bytes_find_large(16384, 4, "abcd") < 0) {
return NULL;
}
if (check_bytes_find_large(32768, 2, "ab") < 0) {
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *
normalize_path(PyObject *self, PyObject *filename)
{
Py_ssize_t size = -1;
wchar_t *encoded = PyUnicode_AsWideCharString(filename, &size);
if (encoded == NULL) {
return NULL;
}
PyObject *result = PyUnicode_FromWideChar(_Py_normpath(encoded, size), -1);
PyMem_Free(encoded);
return result;
}
static PyObject *
get_getpath_codeobject(PyObject *self, PyObject *Py_UNUSED(args)) {
return _Py_Get_Getpath_CodeObject();
}
static PyObject *
encode_locale_ex(PyObject *self, PyObject *args)
{
PyObject *unicode;
int current_locale = 0;
wchar_t *wstr;
PyObject *res = NULL;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "U|is", &unicode, &current_locale, &errors)) {
return NULL;
}
wstr = PyUnicode_AsWideCharString(unicode, NULL);
if (wstr == NULL) {
return NULL;
}
_Py_error_handler error_handler = _Py_GetErrorHandler(errors);
char *str = NULL;
size_t error_pos;
const char *reason = NULL;
int ret = _Py_EncodeLocaleEx(wstr,
&str, &error_pos, &reason,
current_locale, error_handler);
PyMem_Free(wstr);
switch(ret) {
case 0:
res = PyBytes_FromString(str);
PyMem_RawFree(str);
break;
case -1:
PyErr_NoMemory();
break;
case -2:
PyErr_Format(PyExc_RuntimeError, "encode error: pos=%zu, reason=%s",
error_pos, reason);
break;
case -3:
PyErr_SetString(PyExc_ValueError, "unsupported error handler");
break;
default:
PyErr_SetString(PyExc_ValueError, "unknown error code");
break;
}
return res;
}
static PyObject *
decode_locale_ex(PyObject *self, PyObject *args)
{
char *str;
int current_locale = 0;
PyObject *res = NULL;
const char *errors = NULL;
if (!PyArg_ParseTuple(args, "y|is", &str, &current_locale, &errors)) {
return NULL;
}
_Py_error_handler error_handler = _Py_GetErrorHandler(errors);
wchar_t *wstr = NULL;
size_t wlen = 0;
const char *reason = NULL;
int ret = _Py_DecodeLocaleEx(str,
&wstr, &wlen, &reason,
current_locale, error_handler);
switch(ret) {
case 0:
res = PyUnicode_FromWideChar(wstr, wlen);
PyMem_RawFree(wstr);
break;
case -1:
PyErr_NoMemory();
break;
case -2:
PyErr_Format(PyExc_RuntimeError, "decode error: pos=%zu, reason=%s",
wlen, reason);
break;
case -3:
PyErr_SetString(PyExc_ValueError, "unsupported error handler");
break;
default:
PyErr_SetString(PyExc_ValueError, "unknown error code");
break;
}
return res;
}
static PyObject *
set_eval_frame_default(PyObject *self, PyObject *Py_UNUSED(args))
{
module_state *state = get_module_state(self);
_PyInterpreterState_SetEvalFrameFunc(_PyInterpreterState_GET(), _PyEval_EvalFrameDefault);
Py_CLEAR(state->record_list);
Py_RETURN_NONE;
}
static PyObject *
record_eval(PyThreadState *tstate, struct _PyInterpreterFrame *f, int exc)
{
if (PyFunction_Check(f->f_funcobj)) {
PyObject *module = _get_current_module();
assert(module != NULL);
module_state *state = get_module_state(module);
Py_DECREF(module);
int res = PyList_Append(state->record_list,
((PyFunctionObject *)f->f_funcobj)->func_name);
if (res < 0) {
return NULL;
}
}
return _PyEval_EvalFrameDefault(tstate, f, exc);
}
static PyObject *
set_eval_frame_record(PyObject *self, PyObject *list)
{
module_state *state = get_module_state(self);
if (!PyList_Check(list)) {
PyErr_SetString(PyExc_TypeError, "argument must be a list");
return NULL;
}
Py_XSETREF(state->record_list, Py_NewRef(list));
_PyInterpreterState_SetEvalFrameFunc(_PyInterpreterState_GET(), record_eval);
Py_RETURN_NONE;
}
/*[clinic input]
_testinternalcapi.compiler_cleandoc -> object
doc: unicode
C implementation of inspect.cleandoc().
[clinic start generated code]*/
static PyObject *
_testinternalcapi_compiler_cleandoc_impl(PyObject *module, PyObject *doc)
/*[clinic end generated code: output=2dd203a80feff5bc input=2de03fab931d9cdc]*/
{
return _PyCompile_CleanDoc(doc);
}
/*[clinic input]
_testinternalcapi.new_instruction_sequence -> object
Return a new, empty InstructionSequence.
[clinic start generated code]*/
static PyObject *
_testinternalcapi_new_instruction_sequence_impl(PyObject *module)
/*[clinic end generated code: output=ea4243fddb9057fd input=1dec2591b173be83]*/
{
return _PyInstructionSequence_New();
}
/*[clinic input]
_testinternalcapi.compiler_codegen -> object
ast: object
filename: object
optimize: int
compile_mode: int = 0
Apply compiler code generation to an AST.
[clinic start generated code]*/
static PyObject *
_testinternalcapi_compiler_codegen_impl(PyObject *module, PyObject *ast,
PyObject *filename, int optimize,
int compile_mode)
/*[clinic end generated code: output=40a68f6e13951cc8 input=a0e00784f1517cd7]*/
{
PyCompilerFlags *flags = NULL;
return _PyCompile_CodeGen(ast, filename, flags, optimize, compile_mode);
}
/*[clinic input]
_testinternalcapi.optimize_cfg -> object
instructions: object
consts: object
nlocals: int
Apply compiler optimizations to an instruction list.
[clinic start generated code]*/
static PyObject *
_testinternalcapi_optimize_cfg_impl(PyObject *module, PyObject *instructions,
PyObject *consts, int nlocals)
/*[clinic end generated code: output=57c53c3a3dfd1df0 input=6a96d1926d58d7e5]*/
{
return _PyCompile_OptimizeCfg(instructions, consts, nlocals);
}
static int
get_nonnegative_int_from_dict(PyObject *dict, const char *key) {
PyObject *obj = PyDict_GetItemString(dict, key);
if (obj == NULL) {
return -1;
}
return PyLong_AsLong(obj);
}
/*[clinic input]
_testinternalcapi.assemble_code_object -> object
filename: object
instructions: object
metadata: object
Create a code object for the given instructions.
[clinic start generated code]*/
static PyObject *
_testinternalcapi_assemble_code_object_impl(PyObject *module,
PyObject *filename,
PyObject *instructions,
PyObject *metadata)
/*[clinic end generated code: output=38003dc16a930f48 input=e713ad77f08fb3a8]*/
{
assert(PyDict_Check(metadata));
_PyCompile_CodeUnitMetadata umd;
umd.u_name = PyDict_GetItemString(metadata, "name");
umd.u_qualname = PyDict_GetItemString(metadata, "qualname");
assert(PyUnicode_Check(umd.u_name));
assert(PyUnicode_Check(umd.u_qualname));
umd.u_consts = PyDict_GetItemString(metadata, "consts");
umd.u_names = PyDict_GetItemString(metadata, "names");
umd.u_varnames = PyDict_GetItemString(metadata, "varnames");
umd.u_cellvars = PyDict_GetItemString(metadata, "cellvars");
umd.u_freevars = PyDict_GetItemString(metadata, "freevars");
umd.u_fasthidden = PyDict_GetItemString(metadata, "fasthidden");
assert(PyDict_Check(umd.u_consts));
assert(PyDict_Check(umd.u_names));
assert(PyDict_Check(umd.u_varnames));
assert(PyDict_Check(umd.u_cellvars));
assert(PyDict_Check(umd.u_freevars));
assert(PyDict_Check(umd.u_fasthidden));
umd.u_argcount = get_nonnegative_int_from_dict(metadata, "argcount");
umd.u_posonlyargcount = get_nonnegative_int_from_dict(metadata, "posonlyargcount");
umd.u_kwonlyargcount = get_nonnegative_int_from_dict(metadata, "kwonlyargcount");
umd.u_firstlineno = get_nonnegative_int_from_dict(metadata, "firstlineno");
assert(umd.u_argcount >= 0);
assert(umd.u_posonlyargcount >= 0);
assert(umd.u_kwonlyargcount >= 0);
assert(umd.u_firstlineno >= 0);
return (PyObject*)_PyCompile_Assemble(&umd, filename, instructions);
}
// Maybe this could be replaced by get_interpreter_config()?
static PyObject *
get_interp_settings(PyObject *self, PyObject *args)
{
int interpid = -1;
if (!PyArg_ParseTuple(args, "|i:get_interp_settings", &interpid)) {
return NULL;
}
PyInterpreterState *interp = NULL;
if (interpid < 0) {
PyThreadState *tstate = _PyThreadState_GET();
interp = tstate ? tstate->interp : _PyInterpreterState_Main();
}
else if (interpid == 0) {
interp = _PyInterpreterState_Main();
}
else {
PyErr_Format(PyExc_NotImplementedError,
"%zd", interpid);
return NULL;
}
assert(interp != NULL);
PyObject *settings = PyDict_New();
if (settings == NULL) {
return NULL;
}
/* Add the feature flags. */
PyObject *flags = PyLong_FromUnsignedLong(interp->feature_flags);
if (flags == NULL) {
Py_DECREF(settings);
return NULL;
}
int res = PyDict_SetItemString(settings, "feature_flags", flags);
Py_DECREF(flags);
if (res != 0) {
Py_DECREF(settings);
return NULL;
}
/* "own GIL" */
PyObject *own_gil = interp->ceval.own_gil ? Py_True : Py_False;
if (PyDict_SetItemString(settings, "own_gil", own_gil) != 0) {
Py_DECREF(settings);
return NULL;
}
return settings;
}
static PyObject *
clear_extension(PyObject *self, PyObject *args)
{
PyObject *name = NULL, *filename = NULL;
if (!PyArg_ParseTuple(args, "OO:clear_extension", &name, &filename)) {
return NULL;
}
if (_PyImport_ClearExtension(name, filename) < 0) {
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *
write_perf_map_entry(PyObject *self, PyObject *args)
{
PyObject *code_addr_v;
const void *code_addr;
unsigned int code_size;
const char *entry_name;
if (!PyArg_ParseTuple(args, "OIs", &code_addr_v, &code_size, &entry_name))
return NULL;
code_addr = PyLong_AsVoidPtr(code_addr_v);
if (code_addr == NULL) {
return NULL;
}
int ret = PyUnstable_WritePerfMapEntry(code_addr, code_size, entry_name);
if (ret < 0) {
PyErr_SetFromErrno(PyExc_OSError);
return NULL;
}
return PyLong_FromLong(ret);
}
static PyObject *
perf_map_state_teardown(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(ignored))
{
PyUnstable_PerfMapState_Fini();
Py_RETURN_NONE;
}
static PyObject *
iframe_getcode(PyObject *self, PyObject *frame)
{
if (!PyFrame_Check(frame)) {
PyErr_SetString(PyExc_TypeError, "argument must be a frame");
return NULL;
}
struct _PyInterpreterFrame *f = ((PyFrameObject *)frame)->f_frame;
return PyUnstable_InterpreterFrame_GetCode(f);
}
static PyObject *
iframe_getline(PyObject *self, PyObject *frame)
{
if (!PyFrame_Check(frame)) {
PyErr_SetString(PyExc_TypeError, "argument must be a frame");
return NULL;
}
struct _PyInterpreterFrame *f = ((PyFrameObject *)frame)->f_frame;
return PyLong_FromLong(PyUnstable_InterpreterFrame_GetLine(f));
}
static PyObject *
iframe_getlasti(PyObject *self, PyObject *frame)
{
if (!PyFrame_Check(frame)) {
PyErr_SetString(PyExc_TypeError, "argument must be a frame");
return NULL;
}
struct _PyInterpreterFrame *f = ((PyFrameObject *)frame)->f_frame;
return PyLong_FromLong(PyUnstable_InterpreterFrame_GetLasti(f));
}
static PyObject *
get_co_framesize(PyObject *self, PyObject *arg)
{
if (!PyCode_Check(arg)) {
PyErr_SetString(PyExc_TypeError, "argument must be a code object");
return NULL;
}
PyCodeObject *code = (PyCodeObject *)arg;
return PyLong_FromLong(code->co_framesize);
}
#ifdef _Py_TIER2
static PyObject *
new_counter_optimizer(PyObject *self, PyObject *arg)
{
return _PyOptimizer_NewCounter();
}
static PyObject *
new_uop_optimizer(PyObject *self, PyObject *arg)
{
return _PyOptimizer_NewUOpOptimizer();
}
static PyObject *
set_optimizer(PyObject *self, PyObject *opt)
{
if (opt == Py_None) {
opt = NULL;
}
if (_Py_SetTier2Optimizer((_PyOptimizerObject*)opt) < 0) {
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *
get_optimizer(PyObject *self, PyObject *Py_UNUSED(ignored))
{
PyObject *opt = NULL;
#ifdef _Py_TIER2
opt = (PyObject *)_Py_GetOptimizer();
#endif
if (opt == NULL) {
Py_RETURN_NONE;
}
return opt;
}
static PyObject *
add_executor_dependency(PyObject *self, PyObject *args)
{
PyObject *exec;
PyObject *obj;
if (!PyArg_ParseTuple(args, "OO", &exec, &obj)) {
return NULL;
}
/* No way to tell in general if exec is an executor, so we only accept
* counting_executor */
if (strcmp(Py_TYPE(exec)->tp_name, "counting_executor")) {
PyErr_SetString(PyExc_TypeError, "argument must be a counting_executor");
return NULL;
}
_Py_Executor_DependsOn((_PyExecutorObject *)exec, obj);
Py_RETURN_NONE;
}
static PyObject *
invalidate_executors(PyObject *self, PyObject *obj)
{
PyInterpreterState *interp = PyInterpreterState_Get();
_Py_Executors_InvalidateDependency(interp, obj, 1);
Py_RETURN_NONE;
}
#endif
static int _pending_callback(void *arg)
{
/* we assume the argument is callable object to which we own a reference */
PyObject *callable = (PyObject *)arg;
PyObject *r = PyObject_CallNoArgs(callable);
Py_DECREF(callable);
Py_XDECREF(r);
return r != NULL ? 0 : -1;
}
/* The following requests n callbacks to _pending_callback. It can be
* run from any python thread.
*/
static PyObject *
pending_threadfunc(PyObject *self, PyObject *args, PyObject *kwargs)
{
PyObject *callable;
unsigned int num = 1;
int blocking = 0;
int ensure_added = 0;
static char *kwlist[] = {"callback", "num",
"blocking", "ensure_added", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"O|I$pp:pending_threadfunc", kwlist,
&callable, &num, &blocking, &ensure_added))
{
return NULL;
}
PyInterpreterState *interp = _PyInterpreterState_GET();
/* create the reference for the callbackwhile we hold the lock */
for (unsigned int i = 0; i < num; i++) {
Py_INCREF(callable);
}
PyThreadState *save_tstate = NULL;
if (!blocking) {
save_tstate = PyEval_SaveThread();
}
unsigned int num_added = 0;
for (; num_added < num; num_added++) {
if (ensure_added) {
_Py_add_pending_call_result r;
do {
r = _PyEval_AddPendingCall(interp, &_pending_callback, callable, 0);
assert(r == _Py_ADD_PENDING_SUCCESS
|| r == _Py_ADD_PENDING_FULL);
} while (r == _Py_ADD_PENDING_FULL);
}
else {
if (_PyEval_AddPendingCall(interp, &_pending_callback, callable, 0) < 0) {
break;
}
}
}
if (!blocking) {
PyEval_RestoreThread(save_tstate);
}
for (unsigned int i = num_added; i < num; i++) {
Py_DECREF(callable); /* unsuccessful add, destroy the extra reference */
}
/* The callable is decref'ed in _pending_callback() above. */
return PyLong_FromUnsignedLong((unsigned long)num_added);
}
static struct {
int64_t interpid;
} pending_identify_result;
static int
_pending_identify_callback(void *arg)
{
PyThread_type_lock mutex = (PyThread_type_lock)arg;
assert(pending_identify_result.interpid == -1);
PyThreadState *tstate = PyThreadState_Get();
pending_identify_result.interpid = PyInterpreterState_GetID(tstate->interp);
PyThread_release_lock(mutex);
return 0;
}
static PyObject *
pending_identify(PyObject *self, PyObject *args)
{
PyObject *interpid;
if (!PyArg_ParseTuple(args, "O:pending_identify", &interpid)) {
return NULL;
}
PyInterpreterState *interp = _PyInterpreterState_LookUpIDObject(interpid);
if (interp == NULL) {
if (!PyErr_Occurred()) {
PyErr_SetString(PyExc_ValueError, "interpreter not found");
}
return NULL;
}
pending_identify_result.interpid = -1;
PyThread_type_lock mutex = PyThread_allocate_lock();
if (mutex == NULL) {
return NULL;
}
PyThread_acquire_lock(mutex, WAIT_LOCK);
/* It gets released in _pending_identify_callback(). */
_Py_add_pending_call_result r;
do {
Py_BEGIN_ALLOW_THREADS
r = _PyEval_AddPendingCall(interp,
&_pending_identify_callback, (void *)mutex,
0);
Py_END_ALLOW_THREADS
assert(r == _Py_ADD_PENDING_SUCCESS
|| r == _Py_ADD_PENDING_FULL);
} while (r == _Py_ADD_PENDING_FULL);
/* Wait for the pending call to complete. */
PyThread_acquire_lock(mutex, WAIT_LOCK);
PyThread_release_lock(mutex);
PyThread_free_lock(mutex);
PyObject *res = PyLong_FromLongLong(pending_identify_result.interpid);
pending_identify_result.interpid = -1;
if (res == NULL) {
return NULL;
}
return res;
}
static PyObject *
tracemalloc_get_traceback(PyObject *self, PyObject *args)
{
unsigned int domain;
PyObject *ptr_obj;
if (!PyArg_ParseTuple(args, "IO", &domain, &ptr_obj)) {
return NULL;
}
void *ptr = PyLong_AsVoidPtr(ptr_obj);
if (PyErr_Occurred()) {
return NULL;
}
return _PyTraceMalloc_GetTraceback(domain, (uintptr_t)ptr);
}
// Test PyThreadState C API
static PyObject *
test_tstate_capi(PyObject *self, PyObject *Py_UNUSED(args))
{
// PyThreadState_Get()
PyThreadState *tstate = PyThreadState_Get();
assert(tstate != NULL);
// test _PyThreadState_GetDict()
PyObject *dict = PyThreadState_GetDict();
assert(dict != NULL);
// dict is a borrowed reference
PyObject *dict2 = _PyThreadState_GetDict(tstate);
assert(dict2 == dict);
// dict2 is a borrowed reference
Py_RETURN_NONE;
}
/* Test _PyUnicode_TransformDecimalAndSpaceToASCII() */
static PyObject *
unicode_transformdecimalandspacetoascii(PyObject *self, PyObject *arg)
{
if (arg == Py_None) {
arg = NULL;
}
return _PyUnicode_TransformDecimalAndSpaceToASCII(arg);
}
struct atexit_data {
int called;
};
static void
callback(void *data)
{
((struct atexit_data *)data)->called += 1;
}
static PyObject *
test_atexit(PyObject *self, PyObject *Py_UNUSED(args))
{
PyThreadState *oldts = PyThreadState_Swap(NULL);
PyThreadState *tstate = Py_NewInterpreter();
struct atexit_data data = {0};
int res = PyUnstable_AtExit(tstate->interp, callback, (void *)&data);
Py_EndInterpreter(tstate);
PyThreadState_Swap(oldts);
if (res < 0) {
return NULL;
}
if (data.called == 0) {
PyErr_SetString(PyExc_RuntimeError, "atexit callback not called");
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *
test_pyobject_is_freed(const char *test_name, PyObject *op)
{
if (!_PyObject_IsFreed(op)) {
PyErr_SetString(PyExc_AssertionError,
"object is not seen as freed");
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *
check_pyobject_null_is_freed(PyObject *self, PyObject *Py_UNUSED(args))
{
PyObject *op = NULL;
return test_pyobject_is_freed("check_pyobject_null_is_freed", op);
}
static PyObject *
check_pyobject_uninitialized_is_freed(PyObject *self,
PyObject *Py_UNUSED(args))
{
PyObject *op = (PyObject *)PyObject_Malloc(sizeof(PyObject));
if (op == NULL) {
return NULL;
}
/* Initialize reference count to avoid early crash in ceval or GC */
Py_SET_REFCNT(op, 1);
/* object fields like ob_type are uninitialized! */
return test_pyobject_is_freed("check_pyobject_uninitialized_is_freed", op);
}
static PyObject *
check_pyobject_forbidden_bytes_is_freed(PyObject *self,
PyObject *Py_UNUSED(args))
{
/* Allocate an incomplete PyObject structure: truncate 'ob_type' field */
PyObject *op = (PyObject *)PyObject_Malloc(offsetof(PyObject, ob_type));
if (op == NULL) {
return NULL;
}
/* Initialize reference count to avoid early crash in ceval or GC */
Py_SET_REFCNT(op, 1);
/* ob_type field is after the memory block: part of "forbidden bytes"
when using debug hooks on memory allocators! */
return test_pyobject_is_freed("check_pyobject_forbidden_bytes_is_freed", op);
}
static PyObject *
check_pyobject_freed_is_freed(PyObject *self, PyObject *Py_UNUSED(args))
{
/* ASan or TSan would report an use-after-free error */
#if defined(_Py_ADDRESS_SANITIZER) || defined(_Py_THREAD_SANITIZER)
Py_RETURN_NONE;
#else
PyObject *op = PyObject_CallNoArgs((PyObject *)&PyBaseObject_Type);
if (op == NULL) {
return NULL;
}
Py_TYPE(op)->tp_dealloc(op);
/* Reset reference count to avoid early crash in ceval or GC */
Py_SET_REFCNT(op, 1);
/* object memory is freed! */
return test_pyobject_is_freed("check_pyobject_freed_is_freed", op);
#endif
}
static PyObject *
test_pymem_getallocatorsname(PyObject *self, PyObject *args)
{
const char *name = _PyMem_GetCurrentAllocatorName();
if (name == NULL) {
PyErr_SetString(PyExc_RuntimeError, "cannot get allocators name");
return NULL;
}
return PyUnicode_FromString(name);
}
static PyObject *
get_object_dict_values(PyObject *self, PyObject *obj)
{
PyTypeObject *type = Py_TYPE(obj);
if (!_PyType_HasFeature(type, Py_TPFLAGS_INLINE_VALUES)) {
Py_RETURN_NONE;
}
PyDictValues *values = _PyObject_InlineValues(obj);
if (!values->valid) {
Py_RETURN_NONE;
}
PyDictKeysObject *keys = ((PyHeapTypeObject *)type)->ht_cached_keys;
assert(keys != NULL);
int size = (int)keys->dk_nentries;
assert(size >= 0);
PyObject *res = PyTuple_New(size);
if (res == NULL) {
return NULL;
}
_Py_DECLARE_STR(anon_null, "<NULL>");
for(int i = 0; i < size; i++) {
PyObject *item = values->values[i];
if (item == NULL) {
item = &_Py_STR(anon_null);
}
else {
Py_INCREF(item);
}
PyTuple_SET_ITEM(res, i, item);
}
return res;
}
static PyObject*
new_hamt(PyObject *self, PyObject *args)
{
return _PyContext_NewHamtForTests();
}
static PyObject*
dict_getitem_knownhash(PyObject *self, PyObject *args)
{
PyObject *mp, *key, *result;
Py_ssize_t hash;
if (!PyArg_ParseTuple(args, "OOn:dict_getitem_knownhash",
&mp, &key, &hash)) {
return NULL;
}
result = _PyDict_GetItem_KnownHash(mp, key, (Py_hash_t)hash);
if (result == NULL && !PyErr_Occurred()) {
_PyErr_SetKeyError(key);
return NULL;
}
return Py_XNewRef(result);
}
static int
_init_interp_config_from_object(PyInterpreterConfig *config, PyObject *obj)
{
if (obj == NULL) {
*config = (PyInterpreterConfig)_PyInterpreterConfig_INIT;
return 0;
}
PyObject *dict = PyObject_GetAttrString(obj, "__dict__");
if (dict == NULL) {
PyErr_Format(PyExc_TypeError, "bad config %R", obj);
return -1;
}
int res = _PyInterpreterConfig_InitFromDict(config, dict);
Py_DECREF(dict);
if (res < 0) {
return -1;
}
return 0;
}
static PyInterpreterState *
_new_interpreter(PyInterpreterConfig *config, long whence)
{
if (whence == _PyInterpreterState_WHENCE_XI) {
return _PyXI_NewInterpreter(config, &whence, NULL, NULL);
}
PyObject *exc = NULL;
PyInterpreterState *interp = NULL;
if (whence == _PyInterpreterState_WHENCE_UNKNOWN) {
assert(config == NULL);
interp = PyInterpreterState_New();
}
else if (whence == _PyInterpreterState_WHENCE_CAPI
|| whence == _PyInterpreterState_WHENCE_LEGACY_CAPI)
{
PyThreadState *tstate = NULL;
PyThreadState *save_tstate = PyThreadState_Swap(NULL);
if (whence == _PyInterpreterState_WHENCE_LEGACY_CAPI) {
assert(config == NULL);
tstate = Py_NewInterpreter();
PyThreadState_Swap(save_tstate);
}
else {
PyStatus status = Py_NewInterpreterFromConfig(&tstate, config);
PyThreadState_Swap(save_tstate);
if (PyStatus_Exception(status)) {
assert(tstate == NULL);
_PyErr_SetFromPyStatus(status);
exc = PyErr_GetRaisedException();
}
}
if (tstate != NULL) {
interp = PyThreadState_GetInterpreter(tstate);
// Throw away the initial tstate.
PyThreadState_Swap(tstate);
PyThreadState_Clear(tstate);
PyThreadState_Swap(save_tstate);
PyThreadState_Delete(tstate);
}
}
else {
PyErr_Format(PyExc_ValueError,
"unsupported whence %ld", whence);
return NULL;
}
if (interp == NULL) {
PyErr_SetString(PyExc_InterpreterError,
"sub-interpreter creation failed");
if (exc != NULL) {
_PyErr_ChainExceptions1(exc);
}
}
return interp;
}
// This exists mostly for testing the _interpreters module, as an
// alternative to _interpreters.create()
static PyObject *
create_interpreter(PyObject *self, PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = {"config", "whence", NULL};
PyObject *configobj = NULL;
long whence = _PyInterpreterState_WHENCE_XI;
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"|O$l:create_interpreter", kwlist,
&configobj, &whence))
{
return NULL;
}
if (configobj == Py_None) {
configobj = NULL;
}
// Resolve the config.
PyInterpreterConfig *config = NULL;
PyInterpreterConfig _config;
if (whence == _PyInterpreterState_WHENCE_UNKNOWN
|| whence == _PyInterpreterState_WHENCE_LEGACY_CAPI)
{
if (configobj != NULL) {
PyErr_SetString(PyExc_ValueError, "got unexpected config");
return NULL;
}
}
else {
config = &_config;
if (_init_interp_config_from_object(config, configobj) < 0) {
return NULL;
}
}
// Create the interpreter.
PyInterpreterState *interp = _new_interpreter(config, whence);
if (interp == NULL) {
return NULL;
}
// Return the ID.
PyObject *idobj = _PyInterpreterState_GetIDObject(interp);
if (idobj == NULL) {
_PyXI_EndInterpreter(interp, NULL, NULL);
return NULL;
}
return idobj;
}
// This exists mostly for testing the _interpreters module, as an
// alternative to _interpreters.destroy()
static PyObject *
destroy_interpreter(PyObject *self, PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = {"id", NULL};
PyObject *idobj = NULL;
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"O:destroy_interpreter", kwlist,
&idobj))
{
return NULL;
}
PyInterpreterState *interp = _PyInterpreterState_LookUpIDObject(idobj);
if (interp == NULL) {
return NULL;
}
_PyXI_EndInterpreter(interp, NULL, NULL);
Py_RETURN_NONE;
}
// This exists mostly for testing the _interpreters module, as an
// alternative to _interpreters.destroy()
static PyObject *
exec_interpreter(PyObject *self, PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = {"id", "code", "main", NULL};
PyObject *idobj;
const char *code;
int runningmain = 0;
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"Os|$p:exec_interpreter", kwlist,
&idobj, &code, &runningmain))
{
return NULL;
}
PyInterpreterState *interp = _PyInterpreterState_LookUpIDObject(idobj);
if (interp == NULL) {
return NULL;
}
PyObject *res = NULL;
PyThreadState *tstate =
_PyThreadState_NewBound(interp, _PyThreadState_WHENCE_EXEC);
PyThreadState *save_tstate = PyThreadState_Swap(tstate);
if (runningmain) {
if (_PyInterpreterState_SetRunningMain(interp) < 0) {
goto finally;
}
}
/* only initialise 'cflags.cf_flags' to test backwards compatibility */
PyCompilerFlags cflags = {0};
int r = PyRun_SimpleStringFlags(code, &cflags);
if (PyErr_Occurred()) {
PyErr_PrintEx(0);
}
if (runningmain) {
_PyInterpreterState_SetNotRunningMain(interp);
}
res = PyLong_FromLong(r);
finally:
PyThreadState_Clear(tstate);
PyThreadState_Swap(save_tstate);
PyThreadState_Delete(tstate);
return res;
}
/* To run some code in a sub-interpreter.
Generally you can use test.support.interpreters,
but we keep this helper as a distinct implementation.
That's especially important for testing test.support.interpreters.
*/
static PyObject *
run_in_subinterp_with_config(PyObject *self, PyObject *args, PyObject *kwargs)
{
const char *code;
PyObject *configobj;
int xi = 0;
static char *kwlist[] = {"code", "config", "xi", NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"sO|$p:run_in_subinterp_with_config", kwlist,
&code, &configobj, &xi))
{
return NULL;
}
PyInterpreterConfig config;
if (_init_interp_config_from_object(&config, configobj) < 0) {
return NULL;
}
/* only initialise 'cflags.cf_flags' to test backwards compatibility */
PyCompilerFlags cflags = {0};
int r;
if (xi) {
PyThreadState *save_tstate;
PyThreadState *tstate;
/* Create an interpreter, staying switched to it. */
PyInterpreterState *interp = \
_PyXI_NewInterpreter(&config, NULL, &tstate, &save_tstate);
if (interp == NULL) {
return NULL;
}
/* Exec the code in the new interpreter. */
r = PyRun_SimpleStringFlags(code, &cflags);
/* clean up post-exec. */
_PyXI_EndInterpreter(interp, tstate, &save_tstate);
}
else {
PyThreadState *substate;
PyThreadState *mainstate = PyThreadState_Swap(NULL);
/* Create an interpreter, staying switched to it. */
PyStatus status = Py_NewInterpreterFromConfig(&substate, &config);
if (PyStatus_Exception(status)) {
/* Since no new thread state was created, there is no exception to
propagate; raise a fresh one after swapping in the old thread
state. */
PyThreadState_Swap(mainstate);
_PyErr_SetFromPyStatus(status);
PyObject *exc = PyErr_GetRaisedException();
PyErr_SetString(PyExc_InterpreterError,
"sub-interpreter creation failed");
_PyErr_ChainExceptions1(exc);
return NULL;
}
/* Exec the code in the new interpreter. */
r = PyRun_SimpleStringFlags(code, &cflags);
/* clean up post-exec. */
Py_EndInterpreter(substate);
PyThreadState_Swap(mainstate);
}
return PyLong_FromLong(r);
}
static PyObject *
normalize_interp_id(PyObject *self, PyObject *idobj)
{
int64_t interpid = _PyInterpreterState_ObjectToID(idobj);
if (interpid < 0) {
return NULL;
}
return PyLong_FromLongLong(interpid);
}
static PyObject *
next_interpreter_id(PyObject *self, PyObject *Py_UNUSED(ignored))
{
int64_t interpid = _PyRuntime.interpreters.next_id;
return PyLong_FromLongLong(interpid);
}
static PyObject *
unused_interpreter_id(PyObject *self, PyObject *Py_UNUSED(ignored))
{
int64_t interpid = INT64_MAX;
assert(interpid > _PyRuntime.interpreters.next_id);
return PyLong_FromLongLong(interpid);
}
static PyObject *
interpreter_exists(PyObject *self, PyObject *idobj)
{
PyInterpreterState *interp = _PyInterpreterState_LookUpIDObject(idobj);
if (interp == NULL) {
if (PyErr_ExceptionMatches(PyExc_InterpreterNotFoundError)) {
PyErr_Clear();
Py_RETURN_FALSE;
}
assert(PyErr_Occurred());
return NULL;
}
Py_RETURN_TRUE;
}
static PyObject *
get_interpreter_refcount(PyObject *self, PyObject *idobj)
{
PyInterpreterState *interp = _PyInterpreterState_LookUpIDObject(idobj);
if (interp == NULL) {
return NULL;
}
return PyLong_FromLongLong(interp->id_refcount);
}
static PyObject *
link_interpreter_refcount(PyObject *self, PyObject *idobj)
{
PyInterpreterState *interp = _PyInterpreterState_LookUpIDObject(idobj);
if (interp == NULL) {
assert(PyErr_Occurred());
return NULL;
}
_PyInterpreterState_RequireIDRef(interp, 1);
Py_RETURN_NONE;
}
static PyObject *
unlink_interpreter_refcount(PyObject *self, PyObject *idobj)
{
PyInterpreterState *interp = _PyInterpreterState_LookUpIDObject(idobj);
if (interp == NULL) {
assert(PyErr_Occurred());
return NULL;
}
_PyInterpreterState_RequireIDRef(interp, 0);
Py_RETURN_NONE;
}
static PyObject *
interpreter_refcount_linked(PyObject *self, PyObject *idobj)
{
PyInterpreterState *interp = _PyInterpreterState_LookUpIDObject(idobj);
if (interp == NULL) {
return NULL;
}
if (_PyInterpreterState_RequiresIDRef(interp)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static void
_xid_capsule_destructor(PyObject *capsule)
{
_PyCrossInterpreterData *data = \
(_PyCrossInterpreterData *)PyCapsule_GetPointer(capsule, NULL);
if (data != NULL) {
assert(_PyCrossInterpreterData_Release(data) == 0);
_PyCrossInterpreterData_Free(data);
}
}
static PyObject *
get_crossinterp_data(PyObject *self, PyObject *args)
{
PyObject *obj = NULL;
if (!PyArg_ParseTuple(args, "O:get_crossinterp_data", &obj)) {
return NULL;
}
_PyCrossInterpreterData *data = _PyCrossInterpreterData_New();
if (data == NULL) {
return NULL;
}
if (_PyObject_GetCrossInterpreterData(obj, data) != 0) {
_PyCrossInterpreterData_Free(data);
return NULL;
}
PyObject *capsule = PyCapsule_New(data, NULL, _xid_capsule_destructor);
if (capsule == NULL) {
assert(_PyCrossInterpreterData_Release(data) == 0);
_PyCrossInterpreterData_Free(data);
}
return capsule;
}
static PyObject *
restore_crossinterp_data(PyObject *self, PyObject *args)
{
PyObject *capsule = NULL;
if (!PyArg_ParseTuple(args, "O:restore_crossinterp_data", &capsule)) {
return NULL;
}
_PyCrossInterpreterData *data = \
(_PyCrossInterpreterData *)PyCapsule_GetPointer(capsule, NULL);
if (data == NULL) {
return NULL;
}
return _PyCrossInterpreterData_NewObject(data);
}
static PyObject *
raiseTestError(const char* test_name, const char* msg)
{
PyErr_Format(PyExc_AssertionError, "%s: %s", test_name, msg);
return NULL;
}
/*[clinic input]
_testinternalcapi.test_long_numbits
[clinic start generated code]*/
static PyObject *
_testinternalcapi_test_long_numbits_impl(PyObject *module)
/*[clinic end generated code: output=745d62d120359434 input=f14ca6f638e44dad]*/
{
struct triple {
long input;
size_t nbits;
int sign;
} testcases[] = {{0, 0, 0},
{1L, 1, 1},
{-1L, 1, -1},
{2L, 2, 1},
{-2L, 2, -1},
{3L, 2, 1},
{-3L, 2, -1},
{4L, 3, 1},
{-4L, 3, -1},
{0x7fffL, 15, 1}, /* one Python int digit */
{-0x7fffL, 15, -1},
{0xffffL, 16, 1},
{-0xffffL, 16, -1},
{0xfffffffL, 28, 1},
{-0xfffffffL, 28, -1}};
size_t i;
for (i = 0; i < Py_ARRAY_LENGTH(testcases); ++i) {
size_t nbits;
int sign;
PyObject *plong;
plong = PyLong_FromLong(testcases[i].input);
if (plong == NULL)
return NULL;
nbits = _PyLong_NumBits(plong);
sign = _PyLong_Sign(plong);
Py_DECREF(plong);
if (nbits != testcases[i].nbits)
return raiseTestError("test_long_numbits",
"wrong result for _PyLong_NumBits");
if (sign != testcases[i].sign)
return raiseTestError("test_long_numbits",
"wrong result for _PyLong_Sign");
}
Py_RETURN_NONE;
}
static PyObject *
compile_perf_trampoline_entry(PyObject *self, PyObject *args)
{
PyObject *co;
if (!PyArg_ParseTuple(args, "O!", &PyCode_Type, &co)) {
return NULL;
}
int ret = PyUnstable_PerfTrampoline_CompileCode((PyCodeObject *)co);
if (ret != 0) {
PyErr_SetString(PyExc_AssertionError, "Failed to compile trampoline");
return NULL;
}
return PyLong_FromLong(ret);
}
static PyObject *
perf_trampoline_set_persist_after_fork(PyObject *self, PyObject *args)
{
int enable;
if (!PyArg_ParseTuple(args, "i", &enable)) {
return NULL;
}
int ret = PyUnstable_PerfTrampoline_SetPersistAfterFork(enable);
if (ret == 0) {
PyErr_SetString(PyExc_AssertionError, "Failed to set persist_after_fork");
return NULL;
}
return PyLong_FromLong(ret);
}
static PyObject *
get_rare_event_counters(PyObject *self, PyObject *type)
{
PyInterpreterState *interp = PyInterpreterState_Get();
return Py_BuildValue(
"{sksksksksk}",
"set_class", (unsigned long)interp->rare_events.set_class,
"set_bases", (unsigned long)interp->rare_events.set_bases,
"set_eval_frame_func", (unsigned long)interp->rare_events.set_eval_frame_func,
"builtin_dict", (unsigned long)interp->rare_events.builtin_dict,
"func_modification", (unsigned long)interp->rare_events.func_modification
);
}
static PyObject *
reset_rare_event_counters(PyObject *self, PyObject *Py_UNUSED(type))
{
PyInterpreterState *interp = PyInterpreterState_Get();
interp->rare_events.set_class = 0;
interp->rare_events.set_bases = 0;
interp->rare_events.set_eval_frame_func = 0;
interp->rare_events.builtin_dict = 0;
interp->rare_events.func_modification = 0;
return Py_None;
}
#ifdef Py_GIL_DISABLED
static PyObject *
get_py_thread_id(PyObject *self, PyObject *Py_UNUSED(ignored))
{
uintptr_t tid = _Py_ThreadId();
Py_BUILD_ASSERT(sizeof(unsigned long long) >= sizeof(tid));
return PyLong_FromUnsignedLongLong(tid);
}
#endif
static PyObject *
suppress_immortalization(PyObject *self, PyObject *value)
{
#ifdef Py_GIL_DISABLED
int suppress = PyObject_IsTrue(value);
if (suppress < 0) {
return NULL;
}
PyInterpreterState *interp = PyInterpreterState_Get();
// Subtract two to suppress immortalization (so that 1 -> -1)
_Py_atomic_add_int(&interp->gc.immortalize, suppress ? -2 : 2);
#endif
Py_RETURN_NONE;
}
static PyObject *
get_immortalize_deferred(PyObject *self, PyObject *Py_UNUSED(ignored))
{
#ifdef Py_GIL_DISABLED
PyInterpreterState *interp = PyInterpreterState_Get();
return PyBool_FromLong(_Py_atomic_load_int(&interp->gc.immortalize) >= 0);
#else
Py_RETURN_FALSE;
#endif
}
static PyObject *
has_inline_values(PyObject *self, PyObject *obj)
{
if ((Py_TYPE(obj)->tp_flags & Py_TPFLAGS_INLINE_VALUES) &&
_PyObject_InlineValues(obj)->valid) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
// Circumvents standard version assignment machinery - use with caution and only on
// short-lived heap types
static PyObject *
type_assign_specific_version_unsafe(PyObject *self, PyObject *args)
{
PyTypeObject *type;
unsigned int version;
if (!PyArg_ParseTuple(args, "Oi:type_assign_specific_version_unsafe", &type, &version)) {
return NULL;
}
assert(!PyType_HasFeature(type, Py_TPFLAGS_IMMUTABLETYPE));
_PyType_SetVersion(type, version);
Py_RETURN_NONE;
}
/*[clinic input]
gh_119213_getargs
spam: object = None
Test _PyArg_Parser.kwtuple
[clinic start generated code]*/
static PyObject *
gh_119213_getargs_impl(PyObject *module, PyObject *spam)
/*[clinic end generated code: output=d8d9c95d5b446802 input=65ef47511da80fc2]*/
{
// It must never have been called in the main interprer
assert(!_Py_IsMainInterpreter(PyInterpreterState_Get()));
return Py_NewRef(spam);
}
static PyMethodDef module_functions[] = {
{"get_configs", get_configs, METH_NOARGS},
{"get_recursion_depth", get_recursion_depth, METH_NOARGS},
{"get_c_recursion_remaining", get_c_recursion_remaining, METH_NOARGS},
{"test_bswap", test_bswap, METH_NOARGS},
{"test_popcount", test_popcount, METH_NOARGS},
{"test_bit_length", test_bit_length, METH_NOARGS},
{"test_hashtable", test_hashtable, METH_NOARGS},
{"get_config", test_get_config, METH_NOARGS},
{"set_config", test_set_config, METH_O},
{"reset_path_config", test_reset_path_config, METH_NOARGS},
{"test_edit_cost", test_edit_cost, METH_NOARGS},
{"test_bytes_find", test_bytes_find, METH_NOARGS},
{"normalize_path", normalize_path, METH_O, NULL},
{"get_getpath_codeobject", get_getpath_codeobject, METH_NOARGS, NULL},
{"EncodeLocaleEx", encode_locale_ex, METH_VARARGS},
{"DecodeLocaleEx", decode_locale_ex, METH_VARARGS},
{"set_eval_frame_default", set_eval_frame_default, METH_NOARGS, NULL},
{"set_eval_frame_record", set_eval_frame_record, METH_O, NULL},
_TESTINTERNALCAPI_COMPILER_CLEANDOC_METHODDEF
_TESTINTERNALCAPI_NEW_INSTRUCTION_SEQUENCE_METHODDEF
_TESTINTERNALCAPI_COMPILER_CODEGEN_METHODDEF
_TESTINTERNALCAPI_OPTIMIZE_CFG_METHODDEF
_TESTINTERNALCAPI_ASSEMBLE_CODE_OBJECT_METHODDEF
{"get_interp_settings", get_interp_settings, METH_VARARGS, NULL},
{"clear_extension", clear_extension, METH_VARARGS, NULL},
{"write_perf_map_entry", write_perf_map_entry, METH_VARARGS},
{"perf_map_state_teardown", perf_map_state_teardown, METH_NOARGS},
{"iframe_getcode", iframe_getcode, METH_O, NULL},
{"iframe_getline", iframe_getline, METH_O, NULL},
{"iframe_getlasti", iframe_getlasti, METH_O, NULL},
{"get_co_framesize", get_co_framesize, METH_O, NULL},
#ifdef _Py_TIER2
{"get_optimizer", get_optimizer, METH_NOARGS, NULL},
{"set_optimizer", set_optimizer, METH_O, NULL},
{"new_counter_optimizer", new_counter_optimizer, METH_NOARGS, NULL},
{"new_uop_optimizer", new_uop_optimizer, METH_NOARGS, NULL},
{"add_executor_dependency", add_executor_dependency, METH_VARARGS, NULL},
{"invalidate_executors", invalidate_executors, METH_O, NULL},
#endif
{"pending_threadfunc", _PyCFunction_CAST(pending_threadfunc),
METH_VARARGS | METH_KEYWORDS},
{"pending_identify", pending_identify, METH_VARARGS, NULL},
{"_PyTraceMalloc_GetTraceback", tracemalloc_get_traceback, METH_VARARGS},
{"test_tstate_capi", test_tstate_capi, METH_NOARGS, NULL},
{"_PyUnicode_TransformDecimalAndSpaceToASCII", unicode_transformdecimalandspacetoascii, METH_O},
{"test_atexit", test_atexit, METH_NOARGS},
{"check_pyobject_forbidden_bytes_is_freed",
check_pyobject_forbidden_bytes_is_freed, METH_NOARGS},
{"check_pyobject_freed_is_freed", check_pyobject_freed_is_freed, METH_NOARGS},
{"check_pyobject_null_is_freed", check_pyobject_null_is_freed, METH_NOARGS},
{"check_pyobject_uninitialized_is_freed",
check_pyobject_uninitialized_is_freed, METH_NOARGS},
{"pymem_getallocatorsname", test_pymem_getallocatorsname, METH_NOARGS},
{"get_object_dict_values", get_object_dict_values, METH_O},
{"hamt", new_hamt, METH_NOARGS},
{"dict_getitem_knownhash", dict_getitem_knownhash, METH_VARARGS},
{"create_interpreter", _PyCFunction_CAST(create_interpreter),
METH_VARARGS | METH_KEYWORDS},
{"destroy_interpreter", _PyCFunction_CAST(destroy_interpreter),
METH_VARARGS | METH_KEYWORDS},
{"exec_interpreter", _PyCFunction_CAST(exec_interpreter),
METH_VARARGS | METH_KEYWORDS},
{"run_in_subinterp_with_config",
_PyCFunction_CAST(run_in_subinterp_with_config),
METH_VARARGS | METH_KEYWORDS},
{"normalize_interp_id", normalize_interp_id, METH_O},
{"next_interpreter_id", next_interpreter_id, METH_NOARGS},
{"unused_interpreter_id", unused_interpreter_id, METH_NOARGS},
{"interpreter_exists", interpreter_exists, METH_O},
{"get_interpreter_refcount", get_interpreter_refcount, METH_O},
{"link_interpreter_refcount", link_interpreter_refcount, METH_O},
{"unlink_interpreter_refcount", unlink_interpreter_refcount, METH_O},
{"interpreter_refcount_linked", interpreter_refcount_linked, METH_O},
{"compile_perf_trampoline_entry", compile_perf_trampoline_entry, METH_VARARGS},
{"perf_trampoline_set_persist_after_fork", perf_trampoline_set_persist_after_fork, METH_VARARGS},
{"get_crossinterp_data", get_crossinterp_data, METH_VARARGS},
{"restore_crossinterp_data", restore_crossinterp_data, METH_VARARGS},
_TESTINTERNALCAPI_TEST_LONG_NUMBITS_METHODDEF
{"get_rare_event_counters", get_rare_event_counters, METH_NOARGS},
{"reset_rare_event_counters", reset_rare_event_counters, METH_NOARGS},
{"has_inline_values", has_inline_values, METH_O},
{"type_assign_specific_version_unsafe", type_assign_specific_version_unsafe, METH_VARARGS,
PyDoc_STR("forcefully assign type->tp_version_tag")},
#ifdef Py_GIL_DISABLED
{"py_thread_id", get_py_thread_id, METH_NOARGS},
#endif
{"suppress_immortalization", suppress_immortalization, METH_O},
{"get_immortalize_deferred", get_immortalize_deferred, METH_NOARGS},
#ifdef _Py_TIER2
{"uop_symbols_test", _Py_uop_symbols_test, METH_NOARGS},
#endif
GH_119213_GETARGS_METHODDEF
{NULL, NULL} /* sentinel */
};
/* initialization function */
static int
module_exec(PyObject *module)
{
if (_PyTestInternalCapi_Init_Lock(module) < 0) {
return 1;
}
if (_PyTestInternalCapi_Init_PyTime(module) < 0) {
return 1;
}
if (_PyTestInternalCapi_Init_Set(module) < 0) {
return 1;
}
if (_PyTestInternalCapi_Init_CriticalSection(module) < 0) {
return 1;
}
Py_ssize_t sizeof_gc_head = 0;
#ifndef Py_GIL_DISABLED
sizeof_gc_head = sizeof(PyGC_Head);
#endif
if (PyModule_Add(module, "SIZEOF_PYGC_HEAD",
PyLong_FromSsize_t(sizeof_gc_head)) < 0) {
return 1;
}
if (PyModule_Add(module, "SIZEOF_MANAGED_PRE_HEADER",
PyLong_FromSsize_t(2 * sizeof(PyObject*))) < 0) {
return 1;
}
if (PyModule_Add(module, "SIZEOF_PYOBJECT",
PyLong_FromSsize_t(sizeof(PyObject))) < 0) {
return 1;
}
if (PyModule_Add(module, "SIZEOF_TIME_T",
PyLong_FromSsize_t(sizeof(time_t))) < 0) {
return 1;
}
if (PyModule_Add(module, "TIER2_THRESHOLD",
PyLong_FromLong(JUMP_BACKWARD_INITIAL_VALUE)) < 0) {
return 1;
}
return 0;
}
static struct PyModuleDef_Slot module_slots[] = {
{Py_mod_exec, module_exec},
{Py_mod_multiple_interpreters, Py_MOD_PER_INTERPRETER_GIL_SUPPORTED},
{Py_mod_gil, Py_MOD_GIL_NOT_USED},
{0, NULL},
};
static int
module_traverse(PyObject *module, visitproc visit, void *arg)
{
module_state *state = get_module_state(module);
assert(state != NULL);
traverse_module_state(state, visit, arg);
return 0;
}
static int
module_clear(PyObject *module)
{
module_state *state = get_module_state(module);
assert(state != NULL);
(void)clear_module_state(state);
return 0;
}
static void
module_free(void *module)
{
module_state *state = get_module_state(module);
assert(state != NULL);
(void)clear_module_state(state);
}
static struct PyModuleDef _testcapimodule = {
.m_base = PyModuleDef_HEAD_INIT,
.m_name = MODULE_NAME,
.m_doc = NULL,
.m_size = sizeof(module_state),
.m_methods = module_functions,
.m_slots = module_slots,
.m_traverse = module_traverse,
.m_clear = module_clear,
.m_free = (freefunc)module_free,
};
PyMODINIT_FUNC
PyInit__testinternalcapi(void)
{
return PyModuleDef_Init(&_testcapimodule);
}
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