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/* Public partial symbol table definitions.
Copyright (C) 2009-2019 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 PSYMTAB_H
#define PSYMTAB_H
#include "symfile.h"
#include "common/next-iterator.h"
struct partial_symbol;
/* A bcache for partial symbols. */
struct psymbol_bcache;
/* An instance of this class manages the partial symbol tables and
partial symbols for a given objfile. */
class psymtab_storage
{
public:
explicit psymtab_storage (struct objfile *objfile);
~psymtab_storage ();
DISABLE_COPY_AND_ASSIGN (psymtab_storage);
/* Discard all partial symbol tables starting with "psymtabs" and
proceeding until "to" has been discarded. */
void discard_psymtabs_to (struct partial_symtab *to)
{
while (psymtabs != to)
discard_psymtab (psymtabs);
}
/* Discard the partial symbol table. */
void discard_psymtab (struct partial_symtab *pst);
/* Return the obstack that is used for storage by this object. */
struct obstack *obstack ()
{
return m_obstack;
}
/* Each objfile points to a linked list of partial symtabs derived from
this file, one partial symtab structure for each compilation unit
(source file). */
struct partial_symtab *psymtabs = nullptr;
/* Map addresses to the entries of PSYMTABS. It would be more efficient to
have a map per the whole process but ADDRMAP cannot selectively remove
its items during FREE_OBJFILE. This mapping is already present even for
PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */
struct addrmap *psymtabs_addrmap = nullptr;
/* List of freed partial symtabs, available for re-use. */
struct partial_symtab *free_psymtabs = nullptr;
/* A byte cache where we can stash arbitrary "chunks" of bytes that
will not change. */
struct psymbol_bcache *psymbol_cache;
/* Vectors of all partial symbols read in from file. The actual data
is stored in the objfile_obstack. */
std::vector<partial_symbol *> global_psymbols;
std::vector<partial_symbol *> static_psymbols;
private:
/* The obstack where allocations are made. */
struct obstack *m_obstack;
};
extern struct psymbol_bcache *psymbol_bcache_init (void);
extern void psymbol_bcache_free (struct psymbol_bcache *);
extern struct bcache *psymbol_bcache_get_bcache (struct psymbol_bcache *);
extern const struct quick_symbol_functions psym_functions;
extern const struct quick_symbol_functions dwarf2_gdb_index_functions;
extern const struct quick_symbol_functions dwarf2_debug_names_functions;
/* Ensure that the partial symbols for OBJFILE have been loaded. If
VERBOSE is non-zero, then this will print a message when symbols
are loaded. This function returns a range adapter suitable for
iterating over the psymtabs of OBJFILE. */
class objfile_psymtabs;
extern objfile_psymtabs require_partial_symbols (struct objfile *objfile,
int verbose);
#endif /* PSYMTAB_H */
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