Fix thread cache test

python · pablogsal · Dec 7, 2025 · Nov 24, 2025 · Nov 25, 2025 · Nov 25, 2025
commit 13bd7e45f86e87609b82fc529411fa919a307ea2
diff --git a/Lib/test/test_external_inspection.py b/Lib/test/test_external_inspection.py
@@ -2543,20 +2543,18 @@ def recv_msg():
 
             def get_thread_frames(target_funcs):
                 """Get frames for thread matching target functions."""
-                retries = 0
-                for _ in busy_retry(SHORT_TIMEOUT):
-                    if retries >= 5:
-                        break
-                    retries += 1
-                    # On Windows, ReadProcessMemory can fail with OSError
-                    # (WinError 299) when frame pointers are in flux
-                    with contextlib.suppress(RuntimeError, OSError):
+                for _ in range(self.MAX_TRIES):
+                    try:
                         traces = unwinder.get_stack_trace()
-                        for interp in traces:
-                            for thread in interp.threads:
-                                funcs = [f.funcname for f in thread.frame_info]
-                                if any(f in funcs for f in target_funcs):
-                                    return funcs
+                    except (RuntimeError, OSError):
+                        time.sleep(0.1)
+                        continue
+                    all_threads = [t for i in traces for t in i.threads]
+                    for thread in all_threads:
+                        funcs = [f.funcname for f in thread.frame_info]
+                        if any(f in funcs for f in target_funcs):
+                            return funcs
+                    time.sleep(0.1)
                 return None
 
             # Track results for each sync point