gdb/gdb_obstack.h

   1 /* Obstack wrapper for GDB.
   2
   3    Copyright (C) 2002, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #if !defined (GDB_OBSTACK_H)
  22 #define GDB_OBSTACK_H 1
  23
  24 #include "obstack.h"
  25
  26 /* Utility macros - wrap obstack alloc into something more robust.  */
  27
  28 #define OBSTACK_ZALLOC(OBSTACK,TYPE) \
  29   (memset (obstack_alloc ((OBSTACK), sizeof (TYPE)), 0, sizeof (TYPE)))
  30
  31 #define OBSTACK_CALLOC(OBSTACK,NUMBER,TYPE) \
  32   (memset (obstack_alloc ((OBSTACK), (NUMBER) * sizeof (TYPE)), \
  33            0, (NUMBER) * sizeof (TYPE)))
  34
  35 /* Unless explicitly specified, GDB obstacks always use xmalloc() and
  36    xfree().  */
  37 /* Note: ezannoni 2004-02-09: One could also specify the allocation
  38    functions using a special init function for each obstack,
  39    obstack_specify_allocation.  However we just use obstack_init and
  40    let these defines here do the job.  While one could argue the
  41    superiority of one approach over the other, we just chose one
  42    throughout.  */
  43
  44 #define obstack_chunk_alloc xmalloc
  45 #define obstack_chunk_free xfree
  46
  47 #define obstack_grow_str(OBSTACK,STRING) \
  48   obstack_grow (OBSTACK, STRING, strlen (STRING))
  49 #define obstack_grow_str0(OBSTACK,STRING) \
  50   obstack_grow0 (OBSTACK, STRING, strlen (STRING))
  51
  52 #define obstack_grow_wstr(OBSTACK, WSTRING) \
  53   obstack_grow (OBSTACK, WSTRING, sizeof (gdb_wchar_t) * gdb_wcslen (WSTRING))
  54
  55 #endif