process_prepared_mapping
process_prepared_mapping(m);
process_prepared(pool, &pool->prepared_mappings, &pool->process_prepared_mapping);
pool->process_prepared_mapping = process_prepared_mapping_fail;
pool->process_prepared_mapping = process_prepared_mapping_fail;
pool->process_prepared_mapping = process_prepared_mapping;
pool->process_prepared_mapping = process_prepared_mapping;
process_mapping_fn process_prepared_mapping;