pd.if.org Git - liblfds/blob - liblfds/liblfds7.1.0/test_and_benchmark/libshared/inc/libshared/libshared_memory.h

   1 /***** enums *****/
   2 enum libshared_memory_query
   3 {
   4   LIBSHARED_MEMORY_QUERY_GET_AVAILABLE
   5 };
   6
   7 /***** structs *****/
   8 struct libshared_memory_element
   9 {
  10   char unsigned
  11     *original,
  12     *original_after_me_alloc,
  13     *current_pointer, // TRD : "_pointer" on the end 'cause Linux kernel has lower case defines one of which is "current"
  14     *rollback;
  15
  16   enum flag
  17     known_numa_node_flag;
  18
  19   lfds710_pal_uint_t
  20     current_memory_size_in_bytes,
  21     numa_node_id,
  22     original_memory_size_in_bytes,
  23     original_after_me_alloc_memory_size_in_bytes,
  24     rollback_memory_size_in_bytes;
  25
  26   struct lfds710_list_asu_element
  27     lasue;
  28 };
  29
  30 struct libshared_memory_state
  31 {
  32   struct lfds710_list_asu_state
  33     list_of_allocations;
  34 };
  35
  36 /***** public prototypes *****/
  37 void libshared_memory_init( struct libshared_memory_state *ms );
  38 void libshared_memory_cleanup( struct libshared_memory_state *ms,
  39                                void (*memory_cleanup_callback)(enum flag known_numa_node_flag,
  40                                                                void *store,
  41                                                                lfds710_pal_uint_t size) );
  42
  43 void libshared_memory_add_memory( struct libshared_memory_state *ms,
  44                                   void *memory,
  45                                   lfds710_pal_uint_t memory_size_in_bytes );
  46 void libshared_memory_add_memory_from_numa_node( struct libshared_memory_state *ms,
  47                                                  lfds710_pal_uint_t numa_node_id,
  48                                                  void *memory,
  49                                                  lfds710_pal_uint_t memory_size_in_bytes );
  50
  51 void *libshared_memory_alloc_from_unknown_node( struct libshared_memory_state *ms, lfds710_pal_uint_t size_in_bytes, lfds710_pal_uint_t alignment_in_bytes );
  52 void *libshared_memory_alloc_from_specific_node( struct libshared_memory_state *ms, lfds710_pal_uint_t numa_node_id, lfds710_pal_uint_t size_in_bytes, lfds710_pal_uint_t alignment_in_bytes );
  53 void *libshared_memory_alloc_from_most_free_space_node( struct libshared_memory_state *ms, lfds710_pal_uint_t size_in_bytes, lfds710_pal_uint_t alignment_in_bytes );
  54 void *libshared_memory_alloc_largest_possible_array_from_unknown_node( struct libshared_memory_state *ms, lfds710_pal_uint_t element_size_in_bytes, lfds710_pal_uint_t alignment_in_bytes, lfds710_pal_uint_t *number_elements );
  55
  56 void libshared_memory_set_rollback( struct libshared_memory_state *ms );
  57 void libshared_memory_rollback( struct libshared_memory_state *ms );
  58
  59 void libshared_memory_query( struct libshared_memory_state *ms,
  60                              enum libshared_memory_query query_type,
  61                              void *query_input,
  62                              void *query_output );
  63