| /* DWARF abbrev table cache |
| |
| Copyright (C) 2022-2024 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/>. */ |
| |
| #ifndef GDB_DWARF2_ABBREV_CACHE_H |
| #define GDB_DWARF2_ABBREV_CACHE_H |
| |
| #include "dwarf2/abbrev.h" |
| |
| /* An abbrev cache holds abbrev tables for easier reuse. */ |
| class abbrev_cache |
| { |
| public: |
| abbrev_cache (); |
| DISABLE_COPY_AND_ASSIGN (abbrev_cache); |
| |
| /* Find an abbrev table coming from the abbrev section SECTION at |
| offset OFFSET. Return the table, or nullptr if it has not yet |
| been registered. */ |
| abbrev_table *find (struct dwarf2_section_info *section, sect_offset offset) |
| { |
| search_key key = { section, offset }; |
| |
| return (abbrev_table *) htab_find_with_hash (m_tables.get (), &key, |
| to_underlying (offset)); |
| } |
| |
| /* Add TABLE to this cache. Ownership of TABLE is transferred to |
| the cache. Note that a table at a given section+offset may only |
| be registered once -- a violation of this will cause an assert. |
| To avoid this, call the 'find' method first, to see if the table |
| has already been read. */ |
| void add (abbrev_table_up table); |
| |
| private: |
| |
| static hashval_t hash_table (const void *item); |
| static int eq_table (const void *lhs, const void *rhs); |
| |
| struct search_key |
| { |
| struct dwarf2_section_info *section; |
| sect_offset offset; |
| }; |
| |
| /* Hash table of abbrev tables. */ |
| htab_up m_tables; |
| }; |
| |
| #endif /* GDB_DWARF2_ABBREV_CACHE_H */ |