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patch 8.2.1834: PyEval_InitThreads() is deprecated in Python 3.9

Problem:    PyEval_InitThreads() is deprecated in Python 3.9.
Solution:   Do not call PyEval_InitThreads in Python 3.9 and later. (Ken
            Takata, closes #7113)  Avoid warnings for functions.
This commit is contained in:
Bram Moolenaar
2020-10-11 18:05:02 +02:00
parent 204ade6bcb
commit efc0d94afc
3 changed files with 17 additions and 14 deletions

View File

@@ -307,7 +307,7 @@ ObjectDir(PyObject *self, char **attributes)
// Output buffer management // Output buffer management
// Function to write a line, points to either msg() or emsg(). // Function to write a line, points to either msg() or emsg().
typedef void (*writefn)(char_u *); typedef int (*writefn)(char *);
static PyTypeObject OutputType; static PyTypeObject OutputType;
@@ -359,8 +359,8 @@ PythonIO_Flush(void)
{ {
if (old_fn != NULL && io_ga.ga_len > 0) if (old_fn != NULL && io_ga.ga_len > 0)
{ {
((char_u *)io_ga.ga_data)[io_ga.ga_len] = NUL; ((char *)io_ga.ga_data)[io_ga.ga_len] = NUL;
old_fn((char_u *)io_ga.ga_data); old_fn((char *)io_ga.ga_data);
} }
io_ga.ga_len = 0; io_ga.ga_len = 0;
} }
@@ -390,7 +390,7 @@ writer(writefn fn, char_u *str, PyInt n)
mch_memmove(((char *)io_ga.ga_data) + io_ga.ga_len, str, (size_t)len); mch_memmove(((char *)io_ga.ga_data) + io_ga.ga_len, str, (size_t)len);
((char *)io_ga.ga_data)[io_ga.ga_len + len] = NUL; ((char *)io_ga.ga_data)[io_ga.ga_len + len] = NUL;
fn((char_u *)io_ga.ga_data); fn((char *)io_ga.ga_data);
str = ptr + 1; str = ptr + 1;
n -= len + 1; n -= len + 1;
io_ga.ga_len = 0; io_ga.ga_len = 0;

View File

@@ -1002,11 +1002,10 @@ Python3_Init(void)
reset_stdin(); reset_stdin();
Py_Initialize(); Py_Initialize();
// Initialise threads, and below save the state using #if PY_VERSION_HEX < 0x03090000
// PyEval_SaveThread. Without the call to PyEval_SaveThread, thread // Initialise threads. This is deprecated since Python 3.9.
// specific state (such as the system trace hook), will be lost
// between invocations of Python code.
PyEval_InitThreads(); PyEval_InitThreads();
#endif
#ifdef DYNAMIC_PYTHON3 #ifdef DYNAMIC_PYTHON3
get_py3_exceptions(); get_py3_exceptions();
#endif #endif
@@ -1024,12 +1023,14 @@ Python3_Init(void)
// sys.path. // sys.path.
PyRun_SimpleString("import vim; import sys; sys.path = list(filter(lambda x: not x.endswith('must>not&exist'), sys.path))"); PyRun_SimpleString("import vim; import sys; sys.path = list(filter(lambda x: not x.endswith('must>not&exist'), sys.path))");
// lock is created and acquired in PyEval_InitThreads() and thread // Without the call to PyEval_SaveThread, thread specific state (such
// state is created in Py_Initialize() // as the system trace hook), will be lost between invocations of
// there _PyGILState_NoteThreadState() also sets gilcounter to 1 // Python code.
// (python must have threads enabled!) // GIL may have been created and acquired in PyEval_InitThreads() and
// so the following does both: unlock GIL and save thread state in TLS // thread state is created in Py_Initialize(); there
// without deleting thread state // _PyGILState_NoteThreadState() also sets gilcounter to 1 (python must
// have threads enabled!), so the following does both: unlock GIL and
// save thread state in TLS without deleting thread state
PyEval_SaveThread(); PyEval_SaveThread();
py3initialised = 1; py3initialised = 1;

View File

@@ -750,6 +750,8 @@ static char *(features[]) =
static int included_patches[] = static int included_patches[] =
{ /* Add new patch number below this line */ { /* Add new patch number below this line */
/**/
1834,
/**/ /**/
1833, 1833,
/**/ /**/