libcilkrts/runtime/cilk_malloc.c

   1 /* cilk_malloc.c                  -*-C-*-
   2  *
   3  *************************************************************************
   4  *
   5  *  Copyright (C) 2009-2016, Intel Corporation
   6  *  All rights reserved.
   7  *
   8  *  Redistribution and use in source and binary forms, with or without
   9  *  modification, are permitted provided that the following conditions
  10  *  are met:
  11  *
  12  *    * Redistributions of source code must retain the above copyright
  13  *      notice, this list of conditions and the following disclaimer.
  14  *    * Redistributions in binary form must reproduce the above copyright
  15  *      notice, this list of conditions and the following disclaimer in
  16  *      the documentation and/or other materials provided with the
  17  *      distribution.
  18  *    * Neither the name of Intel Corporation nor the names of its
  19  *      contributors may be used to endorse or promote products derived
  20  *      from this software without specific prior written permission.
  21  *
  22  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  34  *
  35  *  *********************************************************************
  36  *
  37  *  PLEASE NOTE: This file is a downstream copy of a file mainitained in
  38  *  a repository at cilkplus.org. Changes made to this file that are not
  39  *  submitted through the contribution process detailed at
  40  *  http://www.cilkplus.org/submit-cilk-contribution will be lost the next
  41  *  time that a new version is released. Changes only submitted to the
  42  *  GNU compiler collection or posted to the git repository at
  43  *  https://bitbucket.org/intelcilkruntime/intel-cilk-runtime.git are
  44  *  not tracked.
  45  *
  46  *  We welcome your contributions to this open source project. Thank you
  47  *  for your assistance in helping us improve Cilk Plus.
  48  **************************************************************************/
  49
  50 #include "cilk_malloc.h"
  51
  52 #include <stdlib.h>
  53 #if defined _WIN32 || defined _WIN64 || defined __GLIBC__ || defined __linux__
  54 #include <malloc.h>
  55 #define HAS_MEMALIGN 1
  56 #endif
  57 #ifdef __VXWORKS__
  58 #define HAS_MEMALIGN 1
  59 #include <memLib.h>
  60 #endif
  61
  62 #define PREFERRED_ALIGNMENT 64  /* try to keep runtime system data
  63                                    structures within one cache line */
  64
  65 void *__cilkrts_malloc(size_t size)
  66 {
  67     /* TODO: check for out of memory */
  68 #ifdef _WIN32
  69     return _aligned_malloc(size, PREFERRED_ALIGNMENT);
  70 #elif defined HAS_MEMALIGN
  71     return memalign(PREFERRED_ALIGNMENT, size);
  72 #else
  73     return malloc(size);
  74 #endif
  75 }
  76
  77 void *__cilkrts_realloc(void *ptr, size_t size)
  78 {
  79 #ifdef _WIN32
  80     return _aligned_realloc(ptr, size, PREFERRED_ALIGNMENT);
  81 #else
  82     return realloc(ptr, size);
  83 #endif
  84 }
  85
  86 void __cilkrts_free(void *ptr)
  87 {
  88 #ifdef _WIN32
  89     _aligned_free(ptr);
  90 #else
  91     free(ptr);
  92 #endif
  93 }
  94
  95 /* End cilk_malloc.c */