Make SimpleQueue thread-safe with the GIL disabled

Methods on SimpleQueue are protected with the per-object lock.

Modules/_queuemodule.c

@@ -264,6 +264,7 @@ maybe_unparked_thread(HandoffData *data, PyObject **item, int has_more_waiters)
 }
 
 /*[clinic input]
+@critical_section
 _queue.SimpleQueue.put
     item: object
     block: bool = True
@@ -279,7 +280,7 @@ never blocks.  They are provided for compatibility with the Queue class.
 static PyObject *
 _queue_SimpleQueue_put_impl(simplequeueobject *self, PyObject *item,
                             int block, PyObject *timeout)
-/*[clinic end generated code: output=4333136e88f90d8b input=6e601fa707a782d5]*/
+/*[clinic end generated code: output=4333136e88f90d8b input=a16dbb33363c0fa8]*/
 {
     HandoffData data = {
         .handed_off = 0,
@@ -300,6 +301,7 @@ _queue_SimpleQueue_put_impl(simplequeueobject *self, PyObject *item,
 }
 
 /*[clinic input]
+@critical_section
 _queue.SimpleQueue.put_nowait
     item: object
 
@@ -312,7 +314,7 @@ for compatibility with the Queue class.
 
 static PyObject *
 _queue_SimpleQueue_put_nowait_impl(simplequeueobject *self, PyObject *item)
-/*[clinic end generated code: output=0990536715efb1f1 input=36b1ea96756b2ece]*/
+/*[clinic end generated code: output=0990536715efb1f1 input=ce949cc2cd8a4119]*/
 {
     return _queue_SimpleQueue_put_impl(self, item, 0, Py_None);
 }
@@ -327,6 +329,7 @@ empty_error(PyTypeObject *cls)
 }
 
 /*[clinic input]
+@critical_section
 _queue.SimpleQueue.get
 
     cls: defining_class
@@ -349,7 +352,7 @@ in that case).
 static PyObject *
 _queue_SimpleQueue_get_impl(simplequeueobject *self, PyTypeObject *cls,
                             int block, PyObject *timeout_obj)
-/*[clinic end generated code: output=5c2cca914cd1e55b input=5b4047bfbc645ec1]*/
+/*[clinic end generated code: output=5c2cca914cd1e55b input=f7836c65e5839c51]*/
 {
     _PyTime_t endtime = 0;
 
@@ -431,6 +434,7 @@ _queue_SimpleQueue_get_impl(simplequeueobject *self, PyTypeObject *cls,
 }
 
 /*[clinic input]
+@critical_section
 _queue.SimpleQueue.get_nowait
 
     cls: defining_class
@@ -445,33 +449,35 @@ raise the Empty exception.
 static PyObject *
 _queue_SimpleQueue_get_nowait_impl(simplequeueobject *self,
                                    PyTypeObject *cls)
-/*[clinic end generated code: output=620c58e2750f8b8a input=842f732bf04216d3]*/
+/*[clinic end generated code: output=620c58e2750f8b8a input=d48be63633fefae9]*/
 {
     return _queue_SimpleQueue_get_impl(self, cls, 0, Py_None);
 }
 
 /*[clinic input]
+@critical_section
 _queue.SimpleQueue.empty -> bool
 
 Return True if the queue is empty, False otherwise (not reliable!).
 [clinic start generated code]*/
 
 static int
 _queue_SimpleQueue_empty_impl(simplequeueobject *self)
-/*[clinic end generated code: output=1a02a1b87c0ef838 input=1a98431c45fd66f9]*/
+/*[clinic end generated code: output=1a02a1b87c0ef838 input=96cb22df5a67d831]*/
 {
     return self->buf.num_items == 0;
 }
 
 /*[clinic input]
+@critical_section
 _queue.SimpleQueue.qsize -> Py_ssize_t
 
 Return the approximate size of the queue (not reliable!).
 [clinic start generated code]*/
 
 static Py_ssize_t
 _queue_SimpleQueue_qsize_impl(simplequeueobject *self)
-/*[clinic end generated code: output=f9dcd9d0a90e121e input=7a74852b407868a1]*/
+/*[clinic end generated code: output=f9dcd9d0a90e121e input=e218623cb8c16a79]*/
 {
     return self->buf.num_items;
 }