From 676f7aa80821aa681030a5c43ce7e6c03b65241b Mon Sep 17 00:00:00 2001
From: jepler <jepler@gmail.com>
Date: Mon, 9 Sep 2019 20:04:08 -0500
Subject: os_listdir: This can be long-running, run background tasks

While finding sources of clicks and buzzes in nrf i2sout, I identified
this site as one which could be long running.  Reproducer code was to
play a 22.05kHz sample and repeatedly print `os.listdir('')`
---
 shared-module/os/__init__.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'shared-module')

diff --git a/shared-module/os/__init__.c b/shared-module/os/__init__.c
index 313893d97..8060eec4f 100644
--- a/shared-module/os/__init__.c
+++ b/shared-module/os/__init__.c
@@ -128,6 +128,7 @@ mp_obj_t common_hal_os_listdir(const char* path) {
     while ((next = mp_iternext(iter_obj)) != MP_OBJ_STOP_ITERATION) {
         // next[0] is the filename.
         mp_obj_list_append(dir_list, mp_obj_subscr(next, MP_OBJ_NEW_SMALL_INT(0), MP_OBJ_SENTINEL));
+        RUN_BACKGROUND_TASKS;
     }
     return dir_list;
 }
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