GDB (xrefs)

/tmp/gdb-8.1/gdb/filename-seen-cache.c
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1 /* Filename-seen cache for the GNU debugger, GDB.
2
3 Copyright (C) 1986-2018 Free Software Foundation, Inc.
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
20 #include "defs.h"
21 #include "filename-seen-cache.h"
22 #include "filenames.h"
23
24 /* Initial size of the table. It automagically grows from here. */
25 #define INITIAL_FILENAME_SEEN_CACHE_SIZE 100
26
27 /* filename_seen_cache constructor. */
28
29 filename_seen_cache::filename_seen_cache ()
30 {
31 m_tab = htab_create_alloc (INITIAL_FILENAME_SEEN_CACHE_SIZE,
32 filename_hash, filename_eq,
33 NULL, xcalloc, xfree);
34 }
35
36 /* See filename-seen-cache.h. */
37
38 void
39 filename_seen_cache::clear ()
40 {
41 htab_empty (m_tab);
42 }
43
44 /* See filename-seen-cache.h. */
45
46 filename_seen_cache::~filename_seen_cache ()
47 {
48 htab_delete (m_tab);
49 }
50
51 /* See filename-seen-cache.h. */
52
53 bool
54 filename_seen_cache::seen (const char *file)
55 {
56 void **slot;
57
58 /* Is FILE in tab? */
59 slot = htab_find_slot (m_tab, file, INSERT);
60 if (*slot != NULL)
61 return true;
62
63 /* No; add it to tab. */
64 *slot = (char *) file;
65 return false;
66 }
filename_seen_cache::filename_seen_cache
filename_seen_cache()
Definition: filename-seen-cache.c:29
xfree
void xfree(void *)
defs.h
filename_seen_cache::~filename_seen_cache
~filename_seen_cache()
Definition: filename-seen-cache.c:46
filename-seen-cache.h
INITIAL_FILENAME_SEEN_CACHE_SIZE
#define INITIAL_FILENAME_SEEN_CACHE_SIZE
Definition: filename-seen-cache.c:25
filename_seen_cache::seen
bool seen(const char *file)
Definition: filename-seen-cache.c:54
filename_seen_cache::clear
void clear()
Definition: filename-seen-cache.c:39
xcalloc
PTR xcalloc(size_t number, size_t size)
Definition: common-utils.c:72
filename_seen_cache::m_tab
htab_t m_tab
Definition: filename-seen-cache.h:60