blob: a644b1a80871200358f04fc81b1d76fb61c549d3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* Filename-seen cache for the GNU debugger, GDB.
Copyright (C) 1986-2018 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 "common/function-view.h"
/* Cache to watch for file names already seen. */
class filename_seen_cache
{
public:
filename_seen_cache ();
~filename_seen_cache ();
DISABLE_COPY_AND_ASSIGN (filename_seen_cache);
/* Empty the cache, but do not delete it. */
void clear ();
/* If FILE is not already in the table of files in CACHE, add it and
return false; otherwise return true.
NOTE: We don't manage space for FILE, we assume FILE lives as
long as the caller needs. */
bool seen (const char *file);
/* Traverse all cache entries, calling CALLBACK on each. The
filename is passed as argument to CALLBACK. */
void traverse (gdb::function_view<void (const char *filename)> callback)
{
auto erased_cb = [] (void **slot, void *info) -> int
{
auto filename = (const char *) *slot;
auto restored_cb = (decltype (callback) *) info;
(*restored_cb) (filename);
return 1;
};
htab_traverse_noresize (m_tab, erased_cb, &callback);
}
private:
/* Table of files seen so far. */
htab_t m_tab;
};
|
