pythongh-136669: build _asyncio as static module (python#136670)

`_asyncio` is now built as a static module so that thread states can be accessed directly via registers and avoids the overhead of function call.

Author: kumaraditya303

Misc/NEWS.d/next/Library/2025-07-15-16-37-34.gh-issue-136669.Yexwah.rst

@@ -0,0 +1 @@
+:mod:`!_asyncio` is now statically linked for improved performance.

Modules/Setup.stdlib.in

@@ -32,7 +32,6 @@
 ############################################################################
 # Modules that should always be present (POSIX and Windows):
 @MODULE_ARRAY_TRUE@array arraymodule.c
-@MODULE__ASYNCIO_TRUE@_asyncio _asynciomodule.c
 @MODULE__BISECT_TRUE@_bisect _bisectmodule.c
 @MODULE__CSV_TRUE@_csv _csv.c
 @MODULE__HEAPQ_TRUE@_heapq _heapqmodule.c
@@ -193,3 +192,9 @@
 # Limited API template modules; must be built as shared modules.
 @MODULE_XXLIMITED_TRUE@xxlimited xxlimited.c
 @MODULE_XXLIMITED_35_TRUE@xxlimited_35 xxlimited_35.c
+
+
+# for performance
+*static*
+
+@MODULE__ASYNCIO_TRUE@_asyncio _asynciomodule.c

Modules/_remote_debugging_module.c

@@ -811,7 +811,7 @@ _Py_RemoteDebug_GetAsyncioDebugAddress(proc_handle_t* handle)
     }
 #elif defined(__linux__)
     // On Linux, search for asyncio debug in executable or DLL
-    address = search_linux_map_for_section(handle, "AsyncioDebug", "_asyncio.cpython");
+    address = search_linux_map_for_section(handle, "AsyncioDebug", "python");
     if (address == 0) {
         // Error out: 'python' substring covers both executable and DLL
         PyObject *exc = PyErr_GetRaisedException();
@@ -820,10 +820,10 @@ _Py_RemoteDebug_GetAsyncioDebugAddress(proc_handle_t* handle)
     }
 #elif defined(__APPLE__) && TARGET_OS_OSX
     // On macOS, try libpython first, then fall back to python
-    address = search_map_for_section(handle, "AsyncioDebug", "_asyncio.cpython");
+    address = search_map_for_section(handle, "AsyncioDebug", "libpython");
     if (address == 0) {
         PyErr_Clear();
-        address = search_map_for_section(handle, "AsyncioDebug", "_asyncio.cpython");
+        address = search_map_for_section(handle, "AsyncioDebug", "python");
     }
     if (address == 0) {
         // Error out: 'python' substring covers both executable and DLL