1/* Callback management.
2 Copyright (C) 2014-2025 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
19
20#include <cc1plugin-config.h>
21#include <string.h>
22#include <stdlib.h>
23#include "callbacks.hh"
24#include "libiberty.h"
25
26// An entry in the hash table.
27struct method
28{
29 const char *name;
30 cc1_plugin::callback_ftype *func;
31};
32
33// Hash function for struct method.
34static hashval_t
35hash_method (const void *a)
36{
37 const struct method *m = (const struct method *) a;
38
39 return htab_hash_string (m->name);
40}
41
42// Equality function for struct method.
43static int
44eq_method (const void *a, const void *b)
45{
46 const struct method *ma = (const struct method *) a;
47 const struct method *mb = (const struct method *) b;
48
49 return strcmp (s1: ma->name, s2: mb->name) == 0;
50}
51
52cc1_plugin::callbacks::callbacks ()
53 : m_registry (htab_create_alloc (10, hash_method, eq_method,
54 free, xcalloc, free))
55{
56}
57
58cc1_plugin::callbacks::~callbacks ()
59{
60 htab_delete (m_registry);
61}
62
63void
64cc1_plugin::callbacks::add_callback (const char *name,
65 cc1_plugin::callback_ftype *func)
66{
67 method m;
68 method **slot;
69
70 m.name = name;
71 m.func = func;
72
73 slot = (method **) htab_find_slot (m_registry, &m, INSERT);
74 *slot = XNEW (method);
75 **slot = m;
76}
77
78cc1_plugin::callback_ftype *
79cc1_plugin::callbacks::find_callback (const char *name)
80{
81 method m, *found;
82
83 m.name = name;
84
85 found = (method *) htab_find (m_registry, &m);
86 if (found == NULL)
87 return NULL;
88
89 return found->func;
90}
91

source code of libcc1/callbacks.cc