adds support for yac_weight_file_on_exit to instance.c

src/mci/instance.c

@@ -122,6 +122,7 @@ struct src_field_config {
 
   struct yac_interp_stack_config * interp_stack;
   const char * weight_file_name;
+  enum yac_weight_file_on_existing weight_file_on_existing;
   struct field_config_event_data event_data;
 };
 
@@ -230,6 +231,7 @@ static struct src_field_config get_src_interp_config(
          couple_config, couple_idx, field_couple_idx))?
         yac_couple_config_get_weight_file_name(
           couple_config, couple_idx, field_couple_idx):NULL,
+    .weight_file_on_existing = YAC_WEIGHT_FILE_ON_EXISTING_DEFAULT_VALUE,
     .event_data = empty_event_data,
   };
 }
@@ -345,6 +347,10 @@ compare_field_config_interp_method(const void * a, const void * b) {
       (ret = strcmp(a_->src_interp_config.weight_file_name,
                     b_->src_interp_config.weight_file_name))) return ret;
 
+  if ((a_->src_interp_config.weight_file_name != NULL) &&
+      (ret = (int)(a_->src_interp_config.weight_file_on_existing) -
+             (int)(b_->src_interp_config.weight_file_on_existing))) return ret;
+
   return
     yac_interp_stack_config_compare(
       a_->src_interp_config.interp_stack,
@@ -1183,7 +1189,7 @@ static void generate_interpolations(
         curr_field_config->src_interp_config.weight_file_name,
         curr_comp_grid_pair->config[src_comp_idx].grid_name,
         curr_comp_grid_pair->config[src_comp_idx^1].grid_name,
-        0, 0, YAC_WEIGHT_FILE_ON_EXISTING_DEFAULT_VALUE);
+        0, 0, curr_field_config->src_interp_config.weight_file_on_existing);
     }
 
     // if the current weight reorder method differs from the previous