libcilkrts/runtime/cilk_malloc.c

   1 /* cilk_malloc.c                  -*-C-*-
   2  *
   3  *************************************************************************
   4  *
   5  *  @copyright
   6  *  Copyright (C) 2009-2013, Intel Corporation
   7  *  All rights reserved.
   8  *
   9  *  @copyright
  10  *  Redistribution and use in source and binary forms, with or without
  11  *  modification, are permitted provided that the following conditions
  12  *  are met:
  13  *
  14  *    * Redistributions of source code must retain the above copyright
  15  *      notice, this list of conditions and the following disclaimer.
  16  *    * Redistributions in binary form must reproduce the above copyright
  17  *      notice, this list of conditions and the following disclaimer in
  18  *      the documentation and/or other materials provided with the
  19  *      distribution.
  20  *    * Neither the name of Intel Corporation nor the names of its
  21  *      contributors may be used to endorse or promote products derived
  22  *      from this software without specific prior written permission.
  23  *
  24  *  @copyright
  25  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  28  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  *  HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  30  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  31  *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  32  *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  33  *  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
  35  *  WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  *  POSSIBILITY OF SUCH DAMAGE.
  37  **************************************************************************/
  38
  39 #include "cilk_malloc.h"
  40
  41 #include <stdlib.h>
  42 #if defined _WIN32 || defined _WIN64 || defined __linux__
  43 #include <malloc.h>
  44 #define HAS_MEMALIGN 1
  45 #endif
  46 #ifdef __VXWORKS__
  47 #define HAS_MEMALIGN 1
  48 #include <memLib.h>
  49 #endif
  50
  51 #define PREFERRED_ALIGNMENT 64  /* try to keep runtime system data
  52                                    structures within one cache line */
  53
  54 void *__cilkrts_malloc(size_t size)
  55 {
  56     /* TODO: check for out of memory */
  57 #ifdef _WIN32
  58     return _aligned_malloc(size, PREFERRED_ALIGNMENT);
  59 #elif defined HAS_MEMALIGN
  60     return memalign(PREFERRED_ALIGNMENT, size);
  61 #else
  62     return malloc(size);
  63 #endif
  64 }
  65
  66 void *__cilkrts_realloc(void *ptr, size_t size)
  67 {
  68 #ifdef _WIN32
  69     return _aligned_realloc(ptr, size, PREFERRED_ALIGNMENT);
  70 #else
  71     return realloc(ptr, size);
  72 #endif
  73 }
  74
  75 void __cilkrts_free(void *ptr)
  76 {
  77 #ifdef _WIN32
  78     _aligned_free(ptr);
  79 #else
  80     free(ptr);
  81 #endif
  82 }
  83
  84 /* End cilk_malloc.c */