projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| bbf2f4df PA |
1 | /* Filename-seen cache for the GNU debugger, GDB. |
| 2 | ||
| b811d2c2 | 3 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
| bbf2f4df PA |
4 | |
| 5 | This file is part of GDB. | |
| 6 | ||
| 7 | This program is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 3 of the License, or | |
| 10 | (at your option) any later version. | |
| 11 | ||
| 12 | This program is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License | |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 19 | ||
| ce1459e5 SM |
20 | #ifndef FILENAME_SEEN_CACHE_H |
| 21 | #define FILENAME_SEEN_CACHE_H | |
| 22 | ||
| d55e5aa6 | 23 | #include "defs.h" |
| 268a13a5 | 24 | #include "gdbsupport/function-view.h" |
| bbf2f4df PA |
25 | |
| 26 | /* Cache to watch for file names already seen. */ | |
| 27 | ||
| 28 | class filename_seen_cache | |
| 29 | { | |
| 30 | public: | |
| 31 | filename_seen_cache (); | |
| 32 | ~filename_seen_cache (); | |
| 33 | ||
| d6541620 | 34 | DISABLE_COPY_AND_ASSIGN (filename_seen_cache); |
| bbf2f4df PA |
35 | |
| 36 | /* Empty the cache, but do not delete it. */ | |
| 37 | void clear (); | |
| 38 | ||
| 39 | /* If FILE is not already in the table of files in CACHE, add it and | |
| 40 | return false; otherwise return true. | |
| 41 | ||
| 42 | NOTE: We don't manage space for FILE, we assume FILE lives as | |
| 43 | long as the caller needs. */ | |
| 44 | bool seen (const char *file); | |
| 45 | ||
| 46 | /* Traverse all cache entries, calling CALLBACK on each. The | |
| 47 | filename is passed as argument to CALLBACK. */ | |
| 48 | void traverse (gdb::function_view<void (const char *filename)> callback) | |
| 49 | { | |
| 50 | auto erased_cb = [] (void **slot, void *info) -> int | |
| 51 | { | |
| 52 | auto filename = (const char *) *slot; | |
| 53 | auto restored_cb = (decltype (callback) *) info; | |
| 54 | (*restored_cb) (filename); | |
| 55 | return 1; | |
| 56 | }; | |
| 57 | ||
| 58 | htab_traverse_noresize (m_tab, erased_cb, &callback); | |
| 59 | } | |
| 60 | ||
| 61 | private: | |
| 62 | /* Table of files seen so far. */ | |
| 63 | htab_t m_tab; | |
| 64 | }; | |
| ce1459e5 SM |
65 | |
| 66 | #endif /* FILENAME_SEEN_CACHE_H */ |