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bpo-38304: Add PyConfig.struct_size (GH-16451) (GH-16453)

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Add a new struct_size field to PyPreConfig and PyConfig structures to
allow to modify these structures in the future without breaking the
backward compatibility.

* Replace private _config_version field with public struct_size field
  in PyPreConfig and PyConfig.
* Public PyPreConfig_InitIsolatedConfig() and
  PyPreConfig_InitPythonConfig()
  return type becomes PyStatus, instead of void.
* Internal _PyConfig_InitCompatConfig(),
  _PyPreConfig_InitCompatConfig(), _PyPreConfig_InitFromConfig(),
  _PyPreConfig_InitFromPreConfig() return type becomes PyStatus,
  instead of void.
* Remove _Py_CONFIG_VERSION
* Update the Initialization Configuration documentation.

(cherry picked from commit 441b10cf28)
This commit is contained in:
Victor Stinner 2019-09-28 04:50:43 +02:00 • committed by GitHub
parent 8750bce988
commit 6e128382b3
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 350 additions and 60 deletions
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29
Python/pylifecycle.c
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@ -731,7 +731,12 @@ _Py_PreInitializeFromPyArgv(const PyPreConfig *src_config, const _PyArgv *args)
runtime->preinitializing = 1;
PyPreConfig config;
_PyPreConfig_InitFromPreConfig(&config, src_config);
config.struct_size = sizeof(PyPreConfig);
status = _PyPreConfig_InitFromPreConfig(&config, src_config);
if (_PyStatus_EXCEPTION(status)) {
return status;
}
status = _PyPreConfig_Read(&config, args);
if (_PyStatus_EXCEPTION(status)) {
@ -790,7 +795,12 @@ _Py_PreInitializeFromConfig(const PyConfig *config,
}
PyPreConfig preconfig;
_PyPreConfig_InitFromConfig(&preconfig, config);
preconfig.struct_size = sizeof(PyPreConfig);
status = _PyPreConfig_InitFromConfig(&preconfig, config);
if (_PyStatus_EXCEPTION(status)) {
return status;
}
if (!config->parse_argv) {
return Py_PreInitialize(&preconfig);
@ -838,7 +848,12 @@ pyinit_core(_PyRuntimeState *runtime,
}
PyConfig config;
_PyConfig_InitCompatConfig(&config);
config.struct_size = sizeof(PyConfig);
status = _PyConfig_InitCompatConfig(&config);
if (_PyStatus_EXCEPTION(status)) {
goto done;
}
status = _PyConfig_Copy(&config, src_config);
if (_PyStatus_EXCEPTION(status)) {
@ -1061,7 +1076,13 @@ Py_InitializeEx(int install_sigs)
}
PyConfig config;
_PyConfig_InitCompatConfig(&config);
config.struct_size = sizeof(PyConfig);
status = _PyConfig_InitCompatConfig(&config);
if (_PyStatus_EXCEPTION(status)) {
Py_ExitStatusException(status);
}
config.install_signal_handlers = install_sigs;
status = Py_InitializeFromConfig(&config);