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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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4
Python/bootstrap_hash.c
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@ -594,8 +594,8 @@ init_hash_secret(int use_hash_seed,
pyurandom() is non-blocking mode (blocking=0): see the PEP 524. */
res = pyurandom(secret, secret_size, 0, 0);
if (res < 0) {
return _Py_INIT_ERR("failed to get random numbers "
"to initialize Python");
return _Py_INIT_USER_ERR("failed to get random numbers "
"to initialize Python");
}
}
return _Py_INIT_OK();