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73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/*****************************************************************************
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Copyright (c) 2006, 2016, Oracle and/or its affiliates. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/*******************************************************************//**
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@file ut/ut0vec.cc
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A vector of pointers to data items
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Created 4/6/2006 Osku Salerma
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************************************************************************/
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#include "ut0vec.h"
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#include "mem0mem.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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ib_alloc_t* allocator, /* in: vector allocator */
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ulint sizeof_value, /* in: size of data item */
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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 = static_cast<ib_vector_t*>(
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allocator->mem_malloc(allocator, sizeof(*vec)));
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vec->used = 0;
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vec->total = size;
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vec->allocator = allocator;
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vec->sizeof_value = sizeof_value;
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vec->data = static_cast<void*>(
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allocator->mem_malloc(allocator, vec->sizeof_value * size));
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return(vec);
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}
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/********************************************************************
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Resize the vector, currently the vector can only grow and we
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expand the number of elements it can hold by 2 times. */
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void
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ib_vector_resize(
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/*=============*/
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ib_vector_t* vec) /* in: vector */
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{
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ulint new_total = vec->total * 2;
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ulint old_size = vec->used * vec->sizeof_value;
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ulint new_size = new_total * vec->sizeof_value;
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vec->data = static_cast<void*>(vec->allocator->mem_resize(
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vec->allocator, vec->data, old_size, new_size));
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vec->total = new_total;
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}
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