1/*****************************************************************************
2
3Copyright (c) 2006, 2016, Oracle and/or its affiliates. All Rights Reserved.
4
5This program is free software; you can redistribute it and/or modify it under
6the terms of the GNU General Public License as published by the Free Software
7Foundation; version 2 of the License.
8
9This program is distributed in the hope that it will be useful, but WITHOUT
10ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12
13You should have received a copy of the GNU General Public License along with
14this program; if not, write to the Free Software Foundation, Inc.,
1551 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
16
17*****************************************************************************/
18
19/*******************************************************************//**
20@file ut/ut0vec.cc
21A vector of pointers to data items
22
23Created 4/6/2006 Osku Salerma
24************************************************************************/
25
26#include "ut0vec.h"
27#include "mem0mem.h"
28
29/********************************************************************
30Create a new vector with the given initial size. */
31ib_vector_t*
32ib_vector_create(
33/*=============*/
34 /* out: vector */
35 ib_alloc_t* allocator, /* in: vector allocator */
36 ulint sizeof_value, /* in: size of data item */
37 ulint size) /* in: initial size */
38{
39 ib_vector_t* vec;
40
41 ut_a(size > 0);
42
43 vec = static_cast<ib_vector_t*>(
44 allocator->mem_malloc(allocator, sizeof(*vec)));
45
46 vec->used = 0;
47 vec->total = size;
48 vec->allocator = allocator;
49 vec->sizeof_value = sizeof_value;
50
51 vec->data = static_cast<void*>(
52 allocator->mem_malloc(allocator, vec->sizeof_value * size));
53
54 return(vec);
55}
56
57/********************************************************************
58Resize the vector, currently the vector can only grow and we
59expand the number of elements it can hold by 2 times. */
60void
61ib_vector_resize(
62/*=============*/
63 ib_vector_t* vec) /* in: vector */
64{
65 ulint new_total = vec->total * 2;
66 ulint old_size = vec->used * vec->sizeof_value;
67 ulint new_size = new_total * vec->sizeof_value;
68
69 vec->data = static_cast<void*>(vec->allocator->mem_resize(
70 vec->allocator, vec->data, old_size, new_size));
71
72 vec->total = new_total;
73}
74