/*
* fetch table struct from cache.
*/
static struct PgqTableInfo *find_table_info(Relation rel)
{
struct PgqTableInfo *entry;
bool found = false;
init_module();
entry = hash_search(tbl_cache_map, &rel->rd_id, HASH_ENTER, &found);
if (!found || entry->invalid) {
clean_info(entry, found);
/*
* During fill_tbl_info() 2 events can happen:
* - table info reset
* - exception
* To survive both, always clean struct and tag
* as invalid but differently from reset.
*/
entry->invalid = 2;
/* find info */
fill_tbl_info(rel, entry);
/*
* If no reset happened, it's valid. Actual reset
* is postponed to next call.
*/
if (entry->invalid == 2)
entry->invalid = false;
}
return entry;
}
/*
* fetch table struct from cache.
*/
static struct PgqTableInfo *find_table_info(Relation rel)
{
struct PgqTableInfo *entry;
bool found = false;
init_module();
entry = hash_search(tbl_cache_map, &rel->rd_id, HASH_ENTER, &found);
if (!found || entry->invalid) {
if (found)
free_info(entry);
fill_tbl_info(rel, entry);
}
return entry;
}
