static int resource_set_release(lua_State *L)
{
resource_set_lua_t *rset;
mrp_debug("> release");
rset = resource_set_lua_check(L, 1);
if (!rset)
return luaL_error(L, "internal error");
if (!rset->committed) {
/* Committing the resource set here means that the resource set stays
* in released state but already receives events. */
if (mrp_application_class_add_resource_set(rset->application_class,
rset->zone, rset->resource_set, 0) < 0)
return luaL_error(L, "failed to commit the resource set");
rset->committed = TRUE;
}
mrp_resource_set_release(rset->resource_set, 0);
return 0;
}
static int resource_set_acquire(lua_State *L)
{
resource_set_lua_t *rset;
mrp_debug("acquire");
rset = resource_set_lua_check(L, 1);
if (!rset)
return luaL_error(L, "internal error");
if (!rset->committed) {
/* Application backend requires us to "commit" the resource set before
* we can use the resource set. It can be done only after all resources
* have been added to the resource set and all the attributes
* configured. */
if (mrp_application_class_add_resource_set(rset->application_class,
rset->zone, rset->resource_set, 0) < 0)
return luaL_error(L, "failed to commit the resource set");
rset->committed = TRUE;
}
mrp_resource_set_acquire(rset->resource_set, 0);
return 0;
}
static int resource_set_release(lua_State *L)
{
resource_set_lua_t *rset;
mrp_debug("> release");
rset = resource_set_lua_check(L, 1);
if (!rset)
return luaL_error(L, "internal error");
mrp_resource_set_release(rset->resource_set, 0);
return 1;
}
static int resource_set_lua_stringify(lua_State *L)
{
resource_set_lua_t *rset;
mrp_debug("> stringify");
rset = resource_set_lua_check(L, 1);
if (!rset) {
lua_pushstring(L, "invalid resource set");
return 1;
}
lua_pushfstring(L, "resource set '%s', acquired: %s, available: %s", "class",
rset->acquired ? "yes" : "no",
rset->available ? "yes" : "no");
return 1;
}
static int resource_set_add_resource(lua_State *L)
{
int narg;
resource_set_lua_t *rset;
resource_lua_t *resource;
const char *resource_name;
bool shared = FALSE;
bool mandatory = TRUE;
mrp_attr_t attribute_list[MAX_ATTRS], *attrs;
mrp_debug("> add_resource");
narg = lua_gettop(L);
if (narg != 2)
return luaL_error(L, "expecting one argument");
rset = resource_set_lua_check(L, 1);
if (!rset)
goto error;
/* the argument should be a table with at least "resource_name" index */
if (!lua_istable(L, -1))
return luaL_error(L, "argument error -- not a table");
lua_pushstring(L, "resource_name");
lua_gettable(L, -2);
if (!lua_isstring(L, -1))
return luaL_error(L, "'resource_name' is a mandatory field");
resource_name = lua_tostring(L, -1);
lua_pop(L, 1);
lua_pushstring(L, "mandatory");
lua_gettable(L, -2);
if (lua_isboolean(L, -1)) {
mandatory = lua_toboolean(L, -1);
}
lua_pop(L, 1);
lua_pushstring(L, "shared");
lua_gettable(L, -2);
if (lua_isboolean(L, -1)) {
shared = lua_toboolean(L, -1);
}
lua_pop(L, 1);
/* create resource object and add it to the resource table in the resource
* set object */
resource = (resource_lua_t *) mrp_lua_create_object(L, RESOURCE_LUA_CLASS,
NULL, 0);
if (!resource)
goto error;
/* mrp_lua_object_ref_value(resource, L, 0); */
resource->mandatory = mandatory;
resource->shared = shared;
resource->acquired = FALSE;
resource->available = FALSE;
resource->resource_name = mrp_strdup(resource_name);
if (!resource->resource_name)
goto error;
resource->parent = rset;
resource->L = L;
resource->real_attributes = (attribute_lua_t *) mrp_lua_create_object(L,
ATTRIBUTE_LUA_CLASS, NULL, 0);
if (!resource->real_attributes)
goto error;
/* mrp_lua_object_ref_value(resource->real_attributes, L, 0); */
resource->real_attributes->L = L;
resource->real_attributes->parent = resource;
resource->real_attributes->resource_set = rset;
resource->real_attributes->initialized = TRUE;
attrs = mrp_resource_set_read_all_attributes(rset->resource_set,
resource->resource_name, MAX_ATTRS-1, attribute_list);
if (mrp_resource_set_add_resource(rset->resource_set,
resource->resource_name, shared, attrs, mandatory) < 0)
goto error;
/* add to resource map */
mrp_debug("inserted resource %s to %p", resource->resource_name, rset);
mrp_htbl_insert(rset->resources, resource->resource_name, resource);
return 0;
error:
/* TODO: clean up the already allocated objects */
return luaL_error(L, "internal resource library error");
}
