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bpo-36444: Add _PyCoreConfig._init_main (GH-12572)

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* Add _PyCoreConfig._init_main: if equals to zero,
  _Py_InitializeFromConfig() doesn't call
  _Py_InitializeMainInterpreter().
* Add interp_p parameter to _Py_InitializeFromConfig().
* pymain_init() now calls _Py_InitializeFromConfig().
* Make _Py_InitializeCore() private.
This commit is contained in:
Victor Stinner 2019-03-27 02:04:16 +01:00 committed by GitHub
parent 8b9dbc017a
commit 484f20d2ff
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 47 additions and 46 deletions
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6
Include/cpython/coreconfig.h
View File

@ -365,6 +365,9 @@ typedef struct {
If set to -1 (default), inherit Py_FrozenFlag value. */
int _frozen;
/* If non-zero, use "main" Python initialization */
int _init_main;
} _PyCoreConfig;
#ifdef MS_WINDOWS
@ -398,7 +401,8 @@ typedef struct {
.buffered_stdio = -1, \
._install_importlib = 1, \
._check_hash_pycs_mode = "default", \
._frozen = -1}
._frozen = -1, \
._init_main = 1}
/* Note: _PyCoreConfig_INIT sets other fields to 0/NULL */

6
Include/cpython/pylifecycle.h
View File

@ -20,9 +20,6 @@ PyAPI_FUNC(_PyInitError) _Py_PreInitializeFromPreConfig(
PyAPI_FUNC(_PyInitError) _Py_PreInitializeFromConfig(
const _PyCoreConfig *coreconfig);
PyAPI_FUNC(_PyInitError) _Py_InitializeCore(
const _PyCoreConfig *config,
PyInterpreterState **interp);
PyAPI_FUNC(int) _Py_IsCoreInitialized(void);
@ -32,7 +29,8 @@ PyAPI_FUNC(_PyInitError) _Py_InitializeMainInterpreter(
/* Initialization and finalization */
PyAPI_FUNC(_PyInitError) _Py_InitializeFromConfig(
const _PyCoreConfig *config);
const _PyCoreConfig *config,
PyInterpreterState **interp_p);
PyAPI_FUNC(void) _Py_NO_RETURN _Py_ExitInitError(_PyInitError err);
/* Py_PyAtExit is for the atexit module, Py_AtExit is for low-level

1
Lib/test/test_embed.py
View File

@ -338,6 +338,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
'_install_importlib': 1,
'_check_hash_pycs_mode': 'default',
'_frozen': 0,
'_init_main': 1,
}
if MS_WINDOWS:
DEFAULT_PRE_CONFIG.update({

39
Modules/main.c
View File

@ -53,19 +53,6 @@ done:
}
static _PyInitError
pymain_init_coreconfig(_PyCoreConfig *config, const _PyArgv *args,
PyInterpreterState **interp_p)
{
_PyInitError err = _PyCoreConfig_Read(config, args);
if (_Py_INIT_FAILED(err)) {
return err;
}
return _Py_InitializeCore(config, interp_p);
}
static _PyInitError
pymain_init(const _PyArgv *args, PyInterpreterState **interp_p)
{
@ -91,18 +78,22 @@ pymain_init(const _PyArgv *args, PyInterpreterState **interp_p)
}
_PyCoreConfig config = _PyCoreConfig_INIT;
err = pymain_init_coreconfig(&config, args, interp_p);
err = _PyCoreConfig_Read(&config, args);
if (_Py_INIT_FAILED(err)) {
goto done;
}
err = _Py_InitializeFromConfig(&config, interp_p);
if (_Py_INIT_FAILED(err)) {
goto done;
}
err = _Py_INIT_OK();
done:
_PyCoreConfig_Clear(&config);
if (_Py_INIT_FAILED(err)) {
return err;
}
err = _Py_InitializeMainInterpreter(*interp_p);
if (_Py_INIT_FAILED(err)) {
return err;
}
return _Py_INIT_OK();
return err;
}

3
Programs/_freeze_importlib.c
View File

@ -84,8 +84,9 @@ main(int argc, char *argv[])
/* Don't install importlib, since it could execute outdated bytecode. */
config._install_importlib = 0;
config._frozen = 1;
config._init_main = 0;
_PyInitError err = _Py_InitializeFromConfig(&config);
_PyInitError err = _Py_InitializeFromConfig(&config, NULL);
/* No need to call _PyCoreConfig_Clear() since we didn't allocate any
memory: program_name is a constant string. */
if (_Py_INIT_FAILED(err)) {

10
Programs/_testembed.c
View File

@ -529,7 +529,7 @@ static int test_init_from_config(void)
Py_FrozenFlag = 0;
config._frozen = 1;
err = _Py_InitializeFromConfig(&config);
err = _Py_InitializeFromConfig(&config, NULL);
/* Don't call _PyCoreConfig_Clear() since all strings are static */
if (_Py_INIT_FAILED(err)) {
_Py_ExitInitError(err);
@ -638,7 +638,7 @@ static int test_init_isolated(void)
config.program_name = L"./_testembed";
test_init_env_dev_mode_putenvs();
err = _Py_InitializeFromConfig(&config);
err = _Py_InitializeFromConfig(&config, NULL);
if (_Py_INIT_FAILED(err)) {
_Py_ExitInitError(err);
}
@ -669,7 +669,7 @@ static int test_preinit_isolated1(void)
config.program_name = L"./_testembed";
test_init_env_dev_mode_putenvs();
err = _Py_InitializeFromConfig(&config);
err = _Py_InitializeFromConfig(&config, NULL);
if (_Py_INIT_FAILED(err)) {
_Py_ExitInitError(err);
}
@ -706,7 +706,7 @@ static int test_preinit_isolated2(void)
config.program_name = L"./_testembed";
test_init_env_dev_mode_putenvs();
err = _Py_InitializeFromConfig(&config);
err = _Py_InitializeFromConfig(&config, NULL);
if (_Py_INIT_FAILED(err)) {
_Py_ExitInitError(err);
}
@ -723,7 +723,7 @@ static int test_init_dev_mode(void)
putenv("PYTHONMALLOC=");
config.dev_mode = 1;
config.program_name = L"./_testembed";
_PyInitError err = _Py_InitializeFromConfig(&config);
_PyInitError err = _Py_InitializeFromConfig(&config, NULL);
if (_Py_INIT_FAILED(err)) {
_Py_ExitInitError(err);
}

2
Python/coreconfig.c
View File

@ -610,6 +610,7 @@ _PyCoreConfig_Copy(_PyCoreConfig *config, const _PyCoreConfig *config2)
COPY_WSTR_ATTR(run_filename);
COPY_ATTR(_check_hash_pycs_mode);
COPY_ATTR(_frozen);
COPY_ATTR(_init_main);
#undef COPY_ATTR
#undef COPY_STR_ATTR
@ -715,6 +716,7 @@ _PyCoreConfig_AsDict(const _PyCoreConfig *config)
SET_ITEM_INT(_install_importlib);
SET_ITEM_STR(_check_hash_pycs_mode);
SET_ITEM_INT(_frozen);
SET_ITEM_INT(_init_main);
return dict;

2
Python/frozenmain.c
View File

@ -82,7 +82,7 @@ Py_FrozenMain(int argc, char **argv)
if (argc >= 1)
Py_SetProgramName(argv_copy[0]);
err = _Py_InitializeFromConfig(&config);
err = _Py_InitializeFromConfig(&config, NULL);
/* No need to call _PyCoreConfig_Clear() since we didn't allocate any
memory: program_name is a constant string. */
if (_Py_INIT_FAILED(err)) {

24
Python/pylifecycle.c
View File

@ -458,7 +458,7 @@ _Py_SetLocaleFromEnv(int category)
/* Global initializations. Can be undone by Py_Finalize(). Don't
call this twice without an intervening Py_Finalize() call.
Every call to _Py_InitializeCore, Py_Initialize or Py_InitializeEx
Every call to _Py_InitializeFromConfig, Py_Initialize or Py_InitializeEx
must have a corresponding call to Py_Finalize.
Locking: you must hold the interpreter lock while calling these APIs.
@ -832,7 +832,7 @@ pyinit_coreconfig(_PyCoreConfig *config, const _PyCoreConfig *src_config,
* to the Python C API (unless the API is explicitly listed as being
* safe to call without calling Py_Initialize first)
*/
_PyInitError
static _PyInitError
_Py_InitializeCore(const _PyCoreConfig *src_config,
PyInterpreterState **interp_p)
{
@ -981,7 +981,8 @@ _Py_InitializeMainInterpreter(PyInterpreterState *interp)
#undef _INIT_DEBUG_PRINT
_PyInitError
_Py_InitializeFromConfig(const _PyCoreConfig *config)
_Py_InitializeFromConfig(const _PyCoreConfig *config,
PyInterpreterState **interp_p)
{
PyInterpreterState *interp = NULL;
_PyInitError err;
@ -989,12 +990,18 @@ _Py_InitializeFromConfig(const _PyCoreConfig *config)
if (_Py_INIT_FAILED(err)) {
return err;
}
if (interp_p) {
*interp_p = interp;
}
config = &interp->core_config;
err = _Py_InitializeMainInterpreter(interp);
if (_Py_INIT_FAILED(err)) {
return err;
if (config->_init_main) {
err = _Py_InitializeMainInterpreter(interp);
if (_Py_INIT_FAILED(err)) {
return err;
}
}
return _Py_INIT_OK();
}
@ -1007,13 +1014,10 @@ Py_InitializeEx(int install_sigs)
return;
}
_PyInitError err;
_PyCoreConfig config = _PyCoreConfig_INIT;
config.install_signal_handlers = install_sigs;
err = _Py_InitializeFromConfig(&config);
_PyCoreConfig_Clear(&config);
_PyInitError err = _Py_InitializeFromConfig(&config, NULL);
if (_Py_INIT_FAILED(err)) {
_Py_ExitInitError(err);
}