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bpo-32030: Enhance Py_Main() (#4412)

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Parse more env vars in Py_Main():

* Add more options to _PyCoreConfig:

  * faulthandler
  * tracemalloc
  * importtime

* Move code to parse environment variables from _Py_InitializeCore()
  to Py_Main(). This change fixes a regression from Python 3.6:
  PYTHONUNBUFFERED is now read before calling pymain_init_stdio().
* _PyFaulthandler_Init() and _PyTraceMalloc_Init() now take an
  argument to decide if the module has to be enabled at startup.
* tracemalloc_start() is now responsible to check the maximum number
  of frames.

Other changes:

* Cleanup Py_Main():

  * Rename some pymain_xxx() subfunctions
  * Add pymain_run_python() subfunction

* Cleanup Py_NewInterpreter()
* _PyInterpreterState_Enable() now reports failure
* init_hash_secret() now considers pyurandom() failure as an "user
  error": don't fail with abort().
* pymain_optlist_append() and pymain_strdup() now sets err on memory
  allocation failure.
This commit is contained in:
Victor Stinner 2017-11-15 18:11:45 -08:00 • committed by GitHub
parent f7e5b56c37
commit a7368ac636
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12 changed files with 495 additions and 411 deletions
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8
Python/pystate.c
View file

@ -76,7 +76,7 @@ _PyRuntimeState_Fini(_PyRuntimeState *runtime)
static void _PyGILState_NoteThreadState(PyThreadState* tstate);
void
_PyInitError
_PyInterpreterState_Enable(_PyRuntimeState *runtime)
{
runtime->interpreters.next_id = 0;
@ -85,9 +85,11 @@ _PyInterpreterState_Enable(_PyRuntimeState *runtime)
initialized here. */
if (runtime->interpreters.mutex == NULL) {
runtime->interpreters.mutex = PyThread_allocate_lock();
if (runtime->interpreters.mutex == NULL)
Py_FatalError("Can't initialize threads for interpreter");
if (runtime->interpreters.mutex == NULL) {
return _Py_INIT_ERR("Can't initialize threads for interpreter");
}
}
return _Py_INIT_OK();
}
PyInterpreterState *