gcc/ggc-none.c

   1 /* Null garbage collection for the GNU compiler.
   2    Copyright (C) 1998-2020 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GCC; see the file COPYING3.  If not see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 /* This version is used by the gen* programs and certain language-specific
  21    targets (such as java), where we don't really need GC at all.
  22    This prevents problems with pulling in all the tree stuff.  */
  23
  24 #ifdef GENERATOR_FILE
  25 #include "bconfig.h"
  26 #else
  27 #include "config.h"
  28 #endif
  29
  30 #include "system.h"
  31 #include "coretypes.h"
  32 #include "hash-table.h"
  33
  34 /* For a given size of memory requested for allocation, return the
  35    actual size that is going to be allocated.  */
  36
  37 size_t
  38 ggc_round_alloc_size (size_t requested_size)
  39 {
  40   return requested_size;
  41 }
  42
  43 void *
  44 ggc_internal_alloc (size_t size, void (*f)(void *), size_t, size_t
  45                     MEM_STAT_DECL)
  46 {
  47   gcc_assert (!f); // ggc-none doesn't support finalizers
  48   return xmalloc (size);
  49 }
  50
  51 void *
  52 ggc_internal_cleared_alloc (size_t size, void (*f)(void *), size_t, size_t
  53                             MEM_STAT_DECL)
  54 {
  55   gcc_assert (!f); // ggc-none doesn't support finalizers
  56   return xcalloc (size, 1);
  57 }
  58
  59 void *
  60 ggc_realloc_stat (void *x, size_t size MEM_STAT_DECL)
  61 {
  62   return xrealloc (x, size);
  63 }
  64
  65 void
  66 ggc_free (void *p)
  67 {
  68   free (p);
  69 }
  70
  71 void
  72 ggc_grow (void)
  73 {
  74 }
  75
  76 void
  77 ggc_trim (void)
  78 {
  79 }