[Tarantool-patches] [PATCH v15 07/11] module_cache: use references as a main usage counter

[Vladislav Shpilevoy]

Thanks for the patch!

See 2 comments below.

> +
> +/**
> + * Decrease module reference and delete it if last one.
> + */
> +static void
> +module_unref(struct module *module)
> +{
> +	assert(module->refs > 0);
> +	if (module->refs-- == 1) {
> +		if (!module_is_orphan(module)) {
> +			size_t len = strlen(module->package);
> +			module_cache_del(module->package,
> +					 &module->package[len]);

1. You can also compare pointer in the hash. If it matches -
delete it. Then you wouldn't need the orphan concept at all.

> +		}
> +		module_delete(module);
> +	}
> +}
> @@ -511,10 +541,15 @@ module_reload(const char *package, const char *package_end)
>  		panic("module: can't update module cache (%s)", package);
>  	}
>  
> -	module_gc(old);
> +	module_set_orphan(old);
> +	module_unref(old);
> +
> +	/* From explicit load above */
> +	module_unref(new);

2. Where is the explicit ref?