#include <stdlib.h>
static int
-move_lte_to_table(struct wim_lookup_table_entry *lte, void *other_tab)
+move_lte_to_table(struct wim_lookup_table_entry *lte, void *combined_table)
{
hlist_del(<e->hash_list);
- lookup_table_insert((struct wim_lookup_table*)other_tab, lte);
+ lookup_table_insert((struct wim_lookup_table*)combined_table, lte);
return 0;
}
-static int
-lookup_table_join(struct wim_lookup_table *table,
- struct wim_lookup_table *new)
+static void
+lookup_table_join(struct wim_lookup_table *combined_table,
+ struct wim_lookup_table *part_table)
{
- for_lookup_table_entry(new, move_lte_to_table, table);
- new->num_entries = 0;
- return 0;
+ for_lookup_table_entry(part_table, move_lte_to_table, combined_table);
+ part_table->num_entries = 0;
}
/*
- * new_joined_lookup_table: - Join lookup tables from the parts of a split WIM.
+ * merge_lookup_tables() - Merge lookup tables from the parts of a split WIM.
*
* @w specifies the first part, while @additional_swms and @num_additional_swms
* specify an array of pointers to the WIMStruct's for additional split WIM parts.
*
- * The lookup table entries are *moved* to the new table.
- *
- * On success, 0 is returned on a pointer to the joined lookup table is returned
- * in @table_ret.
- *
* The reason we join the lookup tables is so we only have to search one lookup
* table to find the location of a resource in the entire WIM.
*/
-int
-new_joined_lookup_table(WIMStruct *w,
- WIMStruct **additional_swms,
- unsigned num_additional_swms,
- struct wim_lookup_table **table_ret)
+void
+merge_lookup_tables(WIMStruct *w,
+ WIMStruct **additional_swms,
+ unsigned num_additional_swms)
{
- struct wim_lookup_table *table;
- int ret;
- unsigned i;
-
- table = new_lookup_table(9001);
- if (!table)
- return WIMLIB_ERR_NOMEM;
-
- if (w)
- lookup_table_join(table, w->lookup_table);
+ for (unsigned i = 0; i < num_additional_swms; i++)
+ lookup_table_join(w->lookup_table, additional_swms[i]->lookup_table);
+}
- for (i = 0; i < num_additional_swms; i++) {
- ret = lookup_table_join(table, additional_swms[i]->lookup_table);
- if (ret != 0)
- goto out_free_table;
+static int
+move_lte_to_orig_table(struct wim_lookup_table_entry *lte, void *_wim)
+{
+ WIMStruct *wim = _wim;
+ if (lte->wim != wim) {
+ move_lte_to_table(lte, lte->wim->lookup_table);
+ wim->lookup_table->num_entries--;
}
- *table_ret = table;
return 0;
-out_free_table:
- free_lookup_table(table);
- return ret;
+}
+
+/* Undo merge_lookup_tables(), given the first WIM part that contains the merged
+ * lookup table. */
+void
+unmerge_lookup_table(WIMStruct *wim)
+{
+ for_lookup_table_entry(wim->lookup_table, move_lte_to_orig_table, wim);
}