include/smpi/smpi_cocci.h

   1 /* Copyright (c) 2011. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #ifndef SMPI_COCCI_H
   8 #define SMPI_COCCI_H
   9
  10 #include <xbt/misc.h>
  11
  12 /* Macros used by coccinelle-generated code */
  13
  14 #define SMPI_VARINIT_GLOBAL(name,type)                          \
  15 type *name = NULL;                                              \
  16 void __attribute__((weak,constructor)) __preinit_##name(void) { \
  17    if(!name)                                                    \
  18       name = (type*)malloc(smpi_global_size() * sizeof(type));  \
  19 }                                                               \
  20 void __attribute__((weak,destructor)) __postfini_##name(void) { \
  21    free(name);                                                  \
  22    name = NULL;                                                 \
  23 }
  24
  25 #define SMPI_VARINIT_GLOBAL_AND_SET(name,type,expr)             \
  26 type *name = NULL;                                              \
  27 void __attribute__((weak,constructor)) __preinit_##name(void) { \
  28    size_t size = smpi_global_size();                            \
  29    size_t i;                                                    \
  30    type value = expr;                                           \
  31    if(!name) {                                                  \
  32       name = (type*)malloc(size * sizeof(type));                \
  33       for(i = 0; i < size; i++) {                               \
  34          name[i] = value;                                       \
  35       }                                                         \
  36    }                                                            \
  37 }                                                               \
  38 void __attribute__((weak,destructor)) __postfini_##name(void) { \
  39    free(name);                                                  \
  40    name = NULL;                                                 \
  41 }
  42
  43 #define SMPI_VARGET_GLOBAL(name) name[smpi_process_index()]
  44
  45 /* The following handle local static variables */
  46 /** @brief Make sure that the passed pointer is freed on process exit.
  47  *
  48  * This function is rather internal, mainly used for the
  49  * privatization of global variables through coccinelle.
  50  *
  51  * Since its implementation relies on the on_exit() function that
  52  * is not implemented on Mac, this function is a no-op on that
  53  * architecture. But the only issue raised is that the memory is
  54  * not raised right before the process terminaison. This is only
  55  * important if you want to run valgrind on the code, or
  56  * equivalent.
  57  */
  58 XBT_PUBLIC(void) smpi_register_static(void* arg);
  59
  60 #define SMPI_VARINIT_STATIC(name,type)                      \
  61 static type *name = NULL;                                   \
  62 if(!name) {                                                 \
  63    name = (type*)malloc(smpi_global_size() * sizeof(type)); \
  64    smpi_register_static(name);                              \
  65 }
  66
  67 #define SMPI_VARINIT_STATIC_AND_SET(name,type,expr) \
  68 static type *name = NULL;                           \
  69 if(!name) {                                         \
  70    size_t size = smpi_global_size();                \
  71    size_t i;                                        \
  72    type value = expr;                               \
  73    name = (type*)malloc(size * sizeof(type));       \
  74    for(i = 0; i < size; i++) {                      \
  75       name[i] = value;                              \
  76    }                                                \
  77    smpi_register_static(name);                      \
  78 }
  79
  80 #define SMPI_VARGET_STATIC(name) name[smpi_process_index()]
  81
  82 #endif