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bpo-44584: Deprecate PYTHONTHREADDEBUG env var (GH-27065)

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The threading debug (PYTHONTHREADDEBUG environment variable) is
deprecated in Python 3.10 and will be removed in Python 3.12. This
feature requires a debug build of Python.
This commit is contained in:
Victor Stinner 2021-08-06 13:11:12 +02:00 • committed by GitHub
parent 938e84b4fa
commit 4d77691172
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 49 additions and 1 deletions
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5
Python/pylifecycle.c
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@ -1057,6 +1057,8 @@ pyinit_main_reconfigure(PyThreadState *tstate)
static PyStatus
init_interp_main(PyThreadState *tstate)
{
extern void _PyThread_debug_deprecation(void);
assert(!_PyErr_Occurred(tstate));
PyStatus status;
@ -1158,6 +1160,9 @@ init_interp_main(PyThreadState *tstate)
#endif
}
// Warn about PYTHONTHREADDEBUG deprecation
_PyThread_debug_deprecation();
assert(!_PyErr_Occurred(tstate));
return _PyStatus_OK();

19
Python/thread.c
View file

@ -75,6 +75,25 @@ PyThread_init_thread(void)
PyThread__init_thread();
}
void
_PyThread_debug_deprecation(void)
{
#ifdef Py_DEBUG
if (thread_debug) {
// Flush previous dprintf() logs
fflush(stdout);
if (PyErr_WarnEx(PyExc_DeprecationWarning,
"The threading debug (PYTHONTHREADDEBUG environment "
"variable) is deprecated and will be removed "
"in Python 3.12",
0))
{
_PyErr_WriteUnraisableMsg("at Python startup", NULL);
}
}
#endif
}
#if defined(_POSIX_THREADS)
# define PYTHREAD_NAME "pthread"
# include "thread_pthread.h"