| /* Filename-seen cache for the GNU debugger, GDB. |
| |
| Copyright (C) 1986-2021 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "filename-seen-cache.h" |
| #include "filenames.h" |
| |
| /* Initial size of the table. It automagically grows from here. */ |
| #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100 |
| |
| /* filename_seen_cache constructor. */ |
| |
| filename_seen_cache::filename_seen_cache () |
| : m_tab (htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE, |
| filename_hash, filename_eq, |
| NULL, xcalloc, xfree)) |
| { |
| } |
| |
| /* See filename-seen-cache.h. */ |
| |
| void |
| filename_seen_cache::clear () |
| { |
| htab_empty (m_tab.get ()); |
| } |
| |
| /* See filename-seen-cache.h. */ |
| |
| bool |
| filename_seen_cache::seen (const char *file) |
| { |
| void **slot; |
| |
| /* Is FILE in tab? */ |
| slot = htab_find_slot (m_tab.get (), file, INSERT); |
| if (*slot != NULL) |
| return true; |
| |
| /* No; add it to tab. */ |
| *slot = (char *) file; |
| return false; |
| } |