py/mpstate: Make exceptions thread-local.

This moves mp_pending_exception from mp_state_vm_t to mp_state_thread_t.
This allows exceptions to be scheduled on a specific thread.

Signed-off-by: David Lechner <david@pybricks.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/py/mpstate.h b/py/mpstate.h
index a0e3d4f14..f5fb5b707 100644
--- a/py/mpstate.h
+++ b/py/mpstate.h
@@ -137,9 +137,6 @@ typedef struct _mp_state_vm_t {
     // dictionary with loaded modules (may be exposed as sys.modules)
     mp_obj_dict_t mp_loaded_modules_dict;
 
-    // pending exception object (MP_OBJ_NULL if not pending)
-    volatile mp_obj_t mp_pending_exception;
-
     #if MICROPY_ENABLE_SCHEDULER
     mp_sched_item_t sched_queue[MICROPY_SCHEDULER_DEPTH];
     #endif
@@ -266,6 +263,9 @@ typedef struct _mp_state_thread_t {
 
     nlr_buf_t *nlr_top;
 
+    // pending exception object (MP_OBJ_NULL if not pending)
+    volatile mp_obj_t mp_pending_exception;
+
     #if MICROPY_PY_SYS_SETTRACE
     mp_obj_t prof_trace_callback;
     bool prof_callback_is_executing;