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MySQL 5.1: mysql/src/5.1-dbg/storage/innobase/dyn/dyn0dyn.c Source File

mysql/src/5.1-dbg/storage/innobase/dyn/dyn0dyn.c

00001 /******************************************************
00002 The dynamically allocated array
00003 
00004 (c) 1996 Innobase Oy
00005 
00006 Created 2/5/1996 Heikki Tuuri
00007 *******************************************************/
00008 
00009 #include "dyn0dyn.h"
00010 #ifdef UNIV_NONINL
00011 #include "dyn0dyn.ic"
00012 #endif
00013 
00014 /****************************************************************
00015 Adds a new block to a dyn array. */
00016 
00017 dyn_block_t*
00018 dyn_array_add_block(
00019 /*================*/
00020                                 /* out: created block */
00021         dyn_array_t*    arr)    /* in: dyn array */
00022 {
00023         mem_heap_t*     heap;
00024         dyn_block_t*    block;
00025 
00026         ut_ad(arr);
00027         ut_ad(arr->magic_n == DYN_BLOCK_MAGIC_N);
00028 
00029         if (arr->heap == NULL) {
00030                 UT_LIST_INIT(arr->base);
00031                 UT_LIST_ADD_FIRST(list, arr->base, arr);
00032 
00033                 arr->heap = mem_heap_create(sizeof(dyn_block_t));
00034         }
00035 
00036         block = dyn_array_get_last_block(arr);
00037         block->used = block->used | DYN_BLOCK_FULL_FLAG;
00038 
00039         heap = arr->heap;
00040 
00041         block = mem_heap_alloc(heap, sizeof(dyn_block_t));
00042 
00043         block->used = 0;
00044 
00045         UT_LIST_ADD_LAST(list, arr->base, block);
00046 
00047         return(block);
00048 }

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