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Viewing changes to storage/innobase/ut/ut0vec.c

  • Committer: brian
  • Date: 2008-06-25 05:29:13 UTC
  • Revision ID: brian@localhost.localdomain-20080625052913-6upwo0jsrl4lnapl
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storage/innobase/ut/ut0vec.c
 
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#include "ut0vec.h"
 
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#ifdef UNIV_NONINL
 
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#include "ut0vec.ic"
 
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#endif
 
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#include <string.h>
 
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/********************************************************************
 
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Create a new vector with the given initial size. */
 
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ib_vector_t*
 
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ib_vector_create(
 
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/*=============*/
 
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                                /* out: vector */
 
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        mem_heap_t*     heap,   /* in: heap */
 
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        ulint           size)   /* in: initial size */
 
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{
 
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        ib_vector_t*    vec;
 
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        ut_a(size > 0);
 
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        vec = mem_heap_alloc(heap, sizeof(*vec));
 
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        vec->heap = heap;
 
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        vec->data = mem_heap_alloc(heap, sizeof(void*) * size);
 
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        vec->used = 0;
 
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        vec->total = size;
 
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        return(vec);
 
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}
 
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/********************************************************************
 
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Push a new element to the vector, increasing its size if necessary. */
 
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void
 
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ib_vector_push(
 
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/*===========*/
 
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        ib_vector_t*    vec,    /* in: vector */
 
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        void*           elem)   /* in: data element */
 
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{
 
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        if (vec->used >= vec->total) {
 
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                void**  new_data;
 
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                ulint   new_total = vec->total * 2;
 
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                new_data = mem_heap_alloc(vec->heap,
 
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                                          sizeof(void*) * new_total);
 
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                memcpy(new_data, vec->data, sizeof(void*) * vec->total);
 
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                vec->data = new_data;
 
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                vec->total = new_total;
 
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        }
 
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        vec->data[vec->used] = elem;
 
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        vec->used++;
 
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}