cilk_malloc.h 3.3 KB

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  1. /* cilk_malloc.h -*-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. * @file cilk_malloc.h
  40. *
  41. * @brief Provides replacement memory allocation functions to allocate
  42. * (and free) memory on cache line boundaries, if supported by the OS.
  43. *
  44. * If aligned memory functions are not provided by the OS, the calls just
  45. * pass through to the standard memory allocation functions.
  46. */
  47. #ifndef INCLUDED_CILK_MALLOC_DOT_H
  48. #define INCLUDED_CILK_MALLOC_DOT_H
  49. #include <cilk/common.h>
  50. #include <stddef.h>
  51. #include "rts-common.h"
  52. __CILKRTS_BEGIN_EXTERN_C
  53. /**
  54. * malloc replacement function to allocate memory aligned on a cache line
  55. * boundary if aligned memory allocations are supported by the OS.
  56. *
  57. * @param size Number of bytes to allocate.
  58. *
  59. * @return pointer to memory block allocated, or NULL if unsuccessful.
  60. */
  61. COMMON_PORTABLE void *__cilkrts_malloc(size_t size);
  62. /**
  63. * realloc replacement function to allocate memory aligned on a cache line
  64. * boundary if aligned memory allocations are supported by the OS.
  65. *
  66. * @param ptr Block to be reallocated.
  67. * @param size Number of bytes to allocate.
  68. *
  69. * @return pointer to memory block allocated, or NULL if unsuccessful.
  70. */
  71. COMMON_PORTABLE void *__cilkrts_realloc(void *ptr, size_t size);
  72. /**
  73. * free replacement function to deallocate memory aligned on a cache line
  74. * boundary if aligned memory allocations are supported by the OS.
  75. *
  76. * @param ptr Block to be freed.
  77. */
  78. COMMON_PORTABLE void __cilkrts_free(void *ptr);
  79. __CILKRTS_END_EXTERN_C
  80. #endif // ! defined(INCLUDED_CILK_MALLOC_DOT_H)