From 7f1c98177bb27a45886fd7e42aa72bef9b1e4a0f Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky
Date: Sat, 28 Mar 2015 01:14:45 +0200
Subject: vm: Support strict stackless mode, with proper exception reporting.

I.e. in this mode, C stack will never be used to call a Python function,
but if there's no free heap for a call, it will be reported as
RuntimeError (as expected), not MemoryError.
---
 py/stackctrl.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'py/stackctrl.c')

diff --git a/py/stackctrl.c b/py/stackctrl.c
index 7d7bbc1be..4c5165372 100644
--- a/py/stackctrl.c
+++ b/py/stackctrl.c
@@ -27,6 +27,7 @@
 #include "py/mpstate.h"
 #include "py/nlr.h"
 #include "py/obj.h"
+#include "py/runtime.h"
 #include "py/stackctrl.h"
 
 void mp_stack_ctrl_init(void) {
@@ -46,10 +47,14 @@ void mp_stack_set_limit(mp_uint_t limit) {
     MP_STATE_VM(stack_limit) = limit;
 }
 
+void mp_exc_recursion_depth(void) {
+    nlr_raise(mp_obj_new_exception_arg1(&mp_type_RuntimeError,
+        MP_OBJ_NEW_QSTR(MP_QSTR_maximum_space_recursion_space_depth_space_exceeded)));
+}
+
 void mp_stack_check(void) {
     if (mp_stack_usage() >= MP_STATE_VM(stack_limit)) {
-        nlr_raise(mp_obj_new_exception_arg1(&mp_type_RuntimeError,
-            MP_OBJ_NEW_QSTR(MP_QSTR_maximum_space_recursion_space_depth_space_exceeded)));
+        mp_exc_recursion_depth();
     }
 }
 
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