forked from Imagelibrary/binutils-gdb
4ea28692e8
Replace an htab with gdb::unordered_set. I think we could also use the dwarf2_per_cu pointer itself as the identity, basically have the functional equivalent of: gdb::unordered_map<dwarf2_per_cu *, cutu_reader_up> But I kept the existing behavior of using dwarf2_per_cu::index as the identity. Change-Id: Ief3df9a71ac26ca7c07a7b79ca0c26c9d031c11d Approved-By: Tom Tromey <tom@tromey.com>
132 lines
3.8 KiB
C++
132 lines
3.8 KiB
C++
/* DWARF index storage
|
|
|
|
Copyright (C) 2022-2025 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_COOKED_INDEX_STORAGE_H
|
|
#define GDB_DWARF2_COOKED_INDEX_STORAGE_H
|
|
|
|
#include "dwarf2/abbrev-table-cache.h"
|
|
#include "dwarf2/cooked-index.h"
|
|
#include "dwarf2/types.h"
|
|
|
|
struct cutu_reader;
|
|
struct dwarf2_per_cu;
|
|
|
|
using cutu_reader_up = std::unique_ptr<cutu_reader>;
|
|
|
|
/* An instance of this is created when scanning DWARF to create a
|
|
cooked index. */
|
|
|
|
class cooked_index_storage
|
|
{
|
|
public:
|
|
|
|
cooked_index_storage ();
|
|
DISABLE_COPY_AND_ASSIGN (cooked_index_storage);
|
|
|
|
/* Return the current abbrev table_cache. */
|
|
const abbrev_table_cache &get_abbrev_table_cache () const
|
|
{ return m_abbrev_table_cache; }
|
|
|
|
/* Return the DIE reader corresponding to PER_CU. If no such reader
|
|
has been registered, return NULL. */
|
|
cutu_reader *get_reader (dwarf2_per_cu *per_cu);
|
|
|
|
/* Preserve READER by storing it in the local hash table. */
|
|
cutu_reader *preserve (cutu_reader_up reader);
|
|
|
|
/* Add an entry to the index. The arguments describe the entry; see
|
|
cooked-index.h. The new entry is returned. */
|
|
cooked_index_entry *add (sect_offset die_offset, enum dwarf_tag tag,
|
|
cooked_index_flag flags,
|
|
const char *name,
|
|
cooked_index_entry_ref parent_entry,
|
|
dwarf2_per_cu *per_cu)
|
|
{
|
|
return m_shard->add (die_offset, tag, flags, per_cu->lang (),
|
|
name, parent_entry, per_cu);
|
|
}
|
|
|
|
/* Install the current addrmap into the shard being constructed,
|
|
then transfer ownership of the index to the caller. */
|
|
cooked_index_shard_up release ()
|
|
{
|
|
m_shard->install_addrmap (&m_addrmap);
|
|
return std::move (m_shard);
|
|
}
|
|
|
|
/* Return the mutable addrmap that is currently being created. */
|
|
addrmap_mutable *get_addrmap ()
|
|
{
|
|
return &m_addrmap;
|
|
}
|
|
|
|
/* Return the parent_map that is currently being created. */
|
|
parent_map *get_parent_map ()
|
|
{
|
|
return &m_parent_map;
|
|
}
|
|
|
|
/* Return the parent_map that is currently being created. Ownership
|
|
is passed to the caller. */
|
|
parent_map release_parent_map ()
|
|
{
|
|
return std::move (m_parent_map);
|
|
}
|
|
|
|
private:
|
|
/* The abbrev table cache used by this indexer. */
|
|
abbrev_table_cache m_abbrev_table_cache;
|
|
|
|
/* Hash function for a cutu_reader. */
|
|
struct cutu_reader_hash
|
|
{
|
|
using is_transparent = void;
|
|
|
|
std::uint64_t operator() (const cutu_reader_up &reader) const noexcept;
|
|
std::uint64_t operator() (const dwarf2_per_cu &per_cu) const noexcept;
|
|
};
|
|
|
|
/* Equality function for cutu_reader. */
|
|
struct cutu_reader_eq
|
|
{
|
|
using is_transparent = void;
|
|
|
|
bool operator() (const cutu_reader_up &a,
|
|
const cutu_reader_up &b) const noexcept;
|
|
|
|
bool operator() (const dwarf2_per_cu &per_cu,
|
|
const cutu_reader_up &reader) const noexcept;
|
|
};
|
|
|
|
/* A hash table of cutu_reader objects. */
|
|
gdb::unordered_set<cutu_reader_up, cutu_reader_hash, cutu_reader_eq>
|
|
m_reader_hash;
|
|
|
|
/* The index shard that is being constructed. */
|
|
cooked_index_shard_up m_shard;
|
|
|
|
/* Parent map for each CU that is read. */
|
|
parent_map m_parent_map;
|
|
|
|
/* A writeable addrmap being constructed by this scanner. */
|
|
addrmap_mutable m_addrmap;
|
|
};
|
|
|
|
#endif /* GDB_DWARF2_COOKED_INDEX_STORAGE_H */
|