binutils-gdb/gdbsupport/gdb-hashtab.cc
Tom Tromey 0589ca4e7b Introduce gdb-hashtab module in gdbsupport
gdb has some extensions and helpers for working with the libiberty
hash table.  This patch consolidates these and moves them to
gdbsupport.
2022-01-18 10:14:43 -07:00

45 lines
1.4 KiB
C++

/* Hash table wrappers for gdb.
Copyright (C) 2021 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/>. */
#include "common-defs.h"
#include "gdb-hashtab.h"
/* Allocation function for the libiberty hash table which uses an
obstack. The obstack is passed as DATA. */
void *
hashtab_obstack_allocate (void *data, size_t size, size_t count)
{
size_t total = size * count;
void *ptr = obstack_alloc ((struct obstack *) data, total);
memset (ptr, 0, total);
return ptr;
}
/* Trivial deallocation function for the libiberty splay tree and hash
table - don't deallocate anything. Rely on later deletion of the
obstack. DATA will be the obstack, although it is not needed
here. */
void
dummy_obstack_deallocate (void *object, void *data)
{
return;
}