bpo-30860: Consolidate stateful runtime globals. (#2594)

* group the (stateful) runtime globals into various topical structs
* consolidate the topical structs under a single top-level _PyRuntimeState struct
* add a check-c-globals.py script that helps identify runtime globals

Other globals are excluded (see globals.txt and check-c-globals.py).

1 files changed, 5 insertions, 4 deletions

diff --git a/Python/thread_nt.h b/Python/thread_nt.h
index 47eb4b6..2f3a71b 100644
--- a/Python/thread_nt.h
+++ b/Python/thread_nt.h
@@ -189,9 +189,10 @@ PyThread_start_new_thread(void (*func)(void *), void *arg)
         return PYTHREAD_INVALID_THREAD_ID;
     obj->func = func;
     obj->arg = arg;
+    PyThreadState *tstate = PyThreadState_GET();
+    size_t stacksize = tstate ? tstate->interp->pythread_stacksize : 0;
     hThread = (HANDLE)_beginthreadex(0,
-                      Py_SAFE_DOWNCAST(_pythread_stacksize,
-                                       Py_ssize_t, unsigned int),
+                      Py_SAFE_DOWNCAST(stacksize, Py_ssize_t, unsigned int),
                       bootstrap, obj,
                       0, &threadID);
     if (hThread == 0) {
@@ -332,13 +333,13 @@ _pythread_nt_set_stacksize(size_t size)
 {
     /* set to default */
     if (size == 0) {
-        _pythread_stacksize = 0;
+        PyThreadState_GET()->interp->pythread_stacksize = 0;
         return 0;
     }
 
     /* valid range? */
     if (size >= THREAD_MIN_STACKSIZE && size < THREAD_MAX_STACKSIZE) {
-        _pythread_stacksize = size;
+        PyThreadState_GET()->interp->pythread_stacksize = size;
         return 0;
     }