gh-128679: Use _PyThreadState_GET() in tracemalloc.c (#129126)

Replace uncommon PyGILState_GetThisThreadState() with common
_PyThreadState_GET().

diff --git a/Python/tracemalloc.c b/Python/tracemalloc.c
index a9f45e5ead1a11d58b0dca6b0de613bfab33e7df..b398ea379e0607c567c77061180e5c5be3696726 100644 (file)
--- a/Python/tracemalloc.c
+++ b/Python/tracemalloc.c
@@ -338,13 +338,8 @@ traceback_hash(traceback_t *traceback)
 static void
 traceback_get_frames(traceback_t *traceback)
 {
-    PyThreadState *tstate = PyGILState_GetThisThreadState();
-    if (tstate == NULL) {
-#ifdef TRACE_DEBUG
-        tracemalloc_error("failed to get the current thread state");
-#endif
-        return;
-    }
+    PyThreadState *tstate = _PyThreadState_GET();
+    assert(tstate != NULL);
 
     _PyInterpreterFrame *pyframe = _PyThreadState_GetFrame(tstate);
     while (pyframe) {