py/gc: Use size_t instead of mp_uint_t to count things related to heap.

size_t is the correct type to use to count things related to the size of
the address space.  Using size_t (instead of mp_uint_t) is important for
the efficiency of ports that configure mp_uint_t to larger than the
machine word size.

1 files changed, 5 insertions, 5 deletions

diff --git a/py/mpstate.h b/py/mpstate.h
index e9e38606e..c7604e03a 100644
--- a/py/mpstate.h
+++ b/py/mpstate.h
@@ -48,7 +48,7 @@ typedef struct _mp_state_mem_t {
     #endif
 
     byte *gc_alloc_table_start;
-    mp_uint_t gc_alloc_table_byte_len;
+    size_t gc_alloc_table_byte_len;
     #if MICROPY_ENABLE_FINALISER
     byte *gc_finaliser_table_start;
     #endif
@@ -56,8 +56,8 @@ typedef struct _mp_state_mem_t {
     byte *gc_pool_end;
 
     int gc_stack_overflow;
-    mp_uint_t gc_stack[MICROPY_ALLOC_GC_STACK_SIZE];
-    mp_uint_t *gc_sp;
+    size_t gc_stack[MICROPY_ALLOC_GC_STACK_SIZE];
+    size_t *gc_sp;
     uint16_t gc_lock_depth;
 
     // This variable controls auto garbage collection.  If set to 0 then the
@@ -65,10 +65,10 @@ typedef struct _mp_state_mem_t {
     // you can still allocate/free memory and also explicitly call gc_collect.
     uint16_t gc_auto_collect_enabled;
 
-    mp_uint_t gc_last_free_atb_index;
+    size_t gc_last_free_atb_index;
 
     #if MICROPY_PY_GC_COLLECT_RETVAL
-    mp_uint_t gc_collected;
+    size_t gc_collected;
     #endif
 } mp_state_mem_t;