void model_write_action(void * obj, memory_order ord, uint64_t val);
void model_init_action(void * obj, uint64_t val);
uint64_t model_rmwr_action(void *obj, memory_order ord);
+uint64_t model_rmwrcas_action(void *obj, memory_order ord, uint64_t oval, int size);
void model_rmw_action(void *obj, memory_order ord, uint64_t val);
void model_rmwc_action(void *obj, memory_order ord);
void model_fence_action(memory_order ord);