text: /* GNU Objective C Runtime Memory allocation functions
     Copyright (C) 1993-2020 Free Software Foundation, Inc.
     Contributed by Kresten Krab Thorup
  
  This file is part of GCC.
  
  GCC 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, or (at your option) any
  later version.
  
  GCC 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.
  
  Under Section 7 of GPL version 3, you are granted additional
  permissions described in the GCC Runtime Library Exception, version
  3.1, as published by the Free Software Foundation.
  
  You should have received a copy of the GNU General Public License and
  a copy of the GCC Runtime Library Exception along with this program;
  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  <http://www.gnu.org/licenses/>.  */
  
  /* This file includes the standard functions for memory allocation and
     disposal.  Users should use these functions in their ObjC programs
     so that they work properly with garbage collectors.  */
  
  /* TODO: Turn these into macros or inline functions.  */
  
  #include "objc-private/common.h"
  #include "objc-private/error.h"
  
  /* __USE_FIXED_PROTOTYPES__ used to be required to get prototypes for
     malloc, free, etc. on some platforms.  It is unclear if we still
     need it, but it can't hurt.  */
  #define __USE_FIXED_PROTOTYPES__
  #include <stdlib.h>
  
  #include "objc/runtime.h"
  
  #if OBJC_WITH_GC
  #include <gc/gc.h>
  
  void *
  objc_malloc (size_t size)
  {
    void *res = (void *)(GC_malloc (size));
    if (! res)
      _objc_abort ("Virtual memory exhausted\n");
    return res;
  }
  
  void *
  objc_atomic_malloc (size_t size)
  {
    void *res = (void *)(GC_malloc_atomic (size));
    if (! res)
      _objc_abort ("Virtual memory exhausted\n");
    return res;
  }
  
  void *
  objc_realloc (void *mem, size_t size)
  {
    void *res = (void *)(GC_realloc (mem, size));
    if (! res)
      _objc_abort ("Virtual memory exhausted\n");
    return res;
  }
  
  void *
  objc_calloc (size_t nelem, size_t size)
  {
    /* Note that GC_malloc returns cleared memory (see documentation) so
       there is no need to clear it.  */
    void *res = (void *)(GC_malloc (nelem * size));
    if (! res)
      _objc_abort ("Virtual memory exhausted\n");
    return res;
  }
  
  void
  objc_free (void *mem __attribute__ ((__unused__)))
  {
    return;
  }
  
  #else
  
  void *
  objc_malloc (size_t size)
  {
    void *res = (void *)(malloc (size));
    if (! res)
      _objc_abort ("Virtual memory exhausted\n");
    return res;
  }
  
  void *
  objc_atomic_malloc (size_t size)
  {
    void *res = (void *)(malloc (size));
    if (! res)
      _objc_abort ("Virtual memory exhausted\n");
    return res;
  }
  
  void *
  objc_realloc (void *mem, size_t size)
  {
    void *res = (void *)(realloc (mem, size));
    if (! res)
      _objc_abort ("Virtual memory exhausted\n");
    return res;
  }
  
  void *
  objc_calloc (size_t nelem, size_t size)
  {
    void *res = (void *)(calloc (nelem, size));
    if (! res)
      _objc_abort ("Virtual memory exhausted\n");
    return res;
  }
  
  void
  objc_free (void *mem)
  {
    free (mem);
  }
  
  #endif	/* !OBJC_WITH_GC */
  