bpo-37392: Remove sys.setcheckinterval() (GH-14355)

Remove sys.getcheckinterval() and sys.setcheckinterval() functions.
They were deprecated since Python 3.2. Use sys.getswitchinterval()
and sys.setswitchinterval() instead.

Remove also check_interval field of the PyInterpreterState structure.

3 files changed, 1 insertions, 111 deletions

diff --git a/Python/clinic/sysmodule.c.h b/Python/clinic/sysmodule.c.h
index 6f248ff..4ddf5fe 100644
--- a/Python/clinic/sysmodule.c.h
+++ b/Python/clinic/sysmodule.c.h
@@ -281,62 +281,6 @@ sys_getprofile(PyObject *module, PyObject *Py_UNUSED(ignored))
     return sys_getprofile_impl(module);
 }
 
-PyDoc_STRVAR(sys_setcheckinterval__doc__,
-"setcheckinterval($module, n, /)\n"
-"--\n"
-"\n"
-"Set the async event check interval to n instructions.\n"
-"\n"
-"This tells the Python interpreter to check for asynchronous events\n"
-"every n instructions.\n"
-"\n"
-"This also affects how often thread switches occur.");
-
-#define SYS_SETCHECKINTERVAL_METHODDEF    \
-    {"setcheckinterval", (PyCFunction)sys_setcheckinterval, METH_O, sys_setcheckinterval__doc__},
-
-static PyObject *
-sys_setcheckinterval_impl(PyObject *module, int n);
-
-static PyObject *
-sys_setcheckinterval(PyObject *module, PyObject *arg)
-{
-    PyObject *return_value = NULL;
-    int n;
-
-    if (PyFloat_Check(arg)) {
-        PyErr_SetString(PyExc_TypeError,
-                        "integer argument expected, got float" );
-        goto exit;
-    }
-    n = _PyLong_AsInt(arg);
-    if (n == -1 && PyErr_Occurred()) {
-        goto exit;
-    }
-    return_value = sys_setcheckinterval_impl(module, n);
-
-exit:
-    return return_value;
-}
-
-PyDoc_STRVAR(sys_getcheckinterval__doc__,
-"getcheckinterval($module, /)\n"
-"--\n"
-"\n"
-"Return the current check interval; see sys.setcheckinterval().");
-
-#define SYS_GETCHECKINTERVAL_METHODDEF    \
-    {"getcheckinterval", (PyCFunction)sys_getcheckinterval, METH_NOARGS, sys_getcheckinterval__doc__},
-
-static PyObject *
-sys_getcheckinterval_impl(PyObject *module);
-
-static PyObject *
-sys_getcheckinterval(PyObject *module, PyObject *Py_UNUSED(ignored))
-{
-    return sys_getcheckinterval_impl(module);
-}
-
 PyDoc_STRVAR(sys_setswitchinterval__doc__,
 "setswitchinterval($module, interval, /)\n"
 "--\n"
@@ -1082,4 +1026,4 @@ sys_getandroidapilevel(PyObject *module, PyObject *Py_UNUSED(ignored))
 #ifndef SYS_GETANDROIDAPILEVEL_METHODDEF
     #define SYS_GETANDROIDAPILEVEL_METHODDEF
 #endif /* !defined(SYS_GETANDROIDAPILEVEL_METHODDEF) */
-/*[clinic end generated code: output=43c4fde7b5783d8d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=022614f3794666ae input=a9049054013a1b77]*/
diff --git a/Python/pystate.c b/Python/pystate.c
index 503b4bf..1c3c0f4 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -203,7 +203,6 @@ PyInterpreterState_New(void)
 
     memset(interp, 0, sizeof(*interp));
     interp->id_refcount = -1;
-    interp->check_interval = 100;
 
     PyStatus status = PyConfig_InitPythonConfig(&interp->config);
     if (_PyStatus_EXCEPTION(status)) {
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index d1a6c6a..c9718d9 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -1025,56 +1025,6 @@ sys_getprofile_impl(PyObject *module)
     return temp;
 }
 
-/*[clinic input]
-sys.setcheckinterval
-
-    n: int
-    /
-
-Set the async event check interval to n instructions.
-
-This tells the Python interpreter to check for asynchronous events
-every n instructions.
-
-This also affects how often thread switches occur.
-[clinic start generated code]*/
-
-static PyObject *
-sys_setcheckinterval_impl(PyObject *module, int n)
-/*[clinic end generated code: output=3f686cef07e6e178 input=7a35b17bf22a6227]*/
-{
-    if (PyErr_WarnEx(PyExc_DeprecationWarning,
-                     "sys.getcheckinterval() and sys.setcheckinterval() "
-                     "are deprecated.  Use sys.setswitchinterval() "
-                     "instead.", 1) < 0) {
-        return NULL;
-    }
-
-    PyThreadState *tstate = _PyThreadState_GET();
-    tstate->interp->check_interval = n;
-    Py_RETURN_NONE;
-}
-
-/*[clinic input]
-sys.getcheckinterval
-
-Return the current check interval; see sys.setcheckinterval().
-[clinic start generated code]*/
-
-static PyObject *
-sys_getcheckinterval_impl(PyObject *module)
-/*[clinic end generated code: output=1b5060bf2b23a47c input=4b6589cbcca1db4e]*/
-{
-    if (PyErr_WarnEx(PyExc_DeprecationWarning,
-                     "sys.getcheckinterval() and sys.setcheckinterval() "
-                     "are deprecated.  Use sys.getswitchinterval() "
-                     "instead.", 1) < 0) {
-        return NULL;
-    }
-
-    PyThreadState *tstate = _PyThreadState_GET();
-    return PyLong_FromLong(tstate->interp->check_interval);
-}
 
 /*[clinic input]
 sys.setswitchinterval
@@ -1990,8 +1940,6 @@ static PyMethodDef sys_methods[] = {
     SYS_INTERN_METHODDEF
     SYS_IS_FINALIZING_METHODDEF
     SYS_MDEBUG_METHODDEF
-    SYS_SETCHECKINTERVAL_METHODDEF
-    SYS_GETCHECKINTERVAL_METHODDEF
     SYS_SETSWITCHINTERVAL_METHODDEF
     SYS_GETSWITCHINTERVAL_METHODDEF
     SYS_SETDLOPENFLAGS_METHODDEF
@@ -2430,7 +2378,6 @@ getrefcount() -- return the reference count for an object (plus one :-)\n\
 getrecursionlimit() -- return the max recursion depth for the interpreter\n\
 getsizeof() -- return the size of an object in bytes\n\
 gettrace() -- get the global debug tracing function\n\
-setcheckinterval() -- control how often the interpreter checks for events\n\
 setdlopenflags() -- set the flags to be used for dlopen() calls\n\
 setprofile() -- set the global profiling function\n\
 setrecursionlimit() -- set the max recursion depth for the interpreter\n\