/* Callback management. Copyright (C) 2014-2020 Free Software Foundation, Inc. This file is part of GCC. GCC 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, or (at your option) any later version. GCC 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 GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ #include <cc1plugin-config.h> #include <string.h> #include <stdlib.h> #include "callbacks.hh" #include "libiberty.h" // An entry in the hash table. struct method { const char *name; cc1_plugin::callback_ftype *func; }; // Hash function for struct method. static hashval_t hash_method (const void *a) { const struct method *m = (const struct method *) a; return htab_hash_string (m->name); } // Equality function for struct method. static int eq_method (const void *a, const void *b) { const struct method *ma = (const struct method *) a; const struct method *mb = (const struct method *) b; return strcmp (ma->name, mb->name) == 0; } cc1_plugin::callbacks::callbacks () : m_registry (htab_create_alloc (10, hash_method, eq_method, free, xcalloc, free)) { } cc1_plugin::callbacks::~callbacks () { htab_delete (m_registry); } void cc1_plugin::callbacks::add_callback (const char *name, cc1_plugin::callback_ftype *func) { method m; method **slot; m.name = name; m.func = func; slot = (method **) htab_find_slot (m_registry, &m, INSERT); *slot = XNEW (method); **slot = m; } cc1_plugin::callback_ftype * cc1_plugin::callbacks::find_callback (const char *name) { method m, *found; m.name = name; found = (method *) htab_find (m_registry, &m); if (found == NULL) return NULL; return found->func; } |