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/**************************************************************************
*
* Copyright 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef UTIL_ARRAY_H
#define UTIL_ARRAY_H
#include "util/u_memory.h"
#define DEFAULT_ARRAY_SIZE 256
struct array {
VGint datatype_size;
void *data;
VGint size;
VGint num_elements;
};
static INLINE struct array *array_create(VGint datatype_size)
{
struct array *array = CALLOC_STRUCT(array);
array->datatype_size = datatype_size;
array->size = DEFAULT_ARRAY_SIZE;
array->data = malloc(array->size * array->datatype_size);
return array;
}
static INLINE struct array *array_create_size(VGint datatype_size, VGint size)
{
struct array *array = CALLOC_STRUCT(array);
array->datatype_size = datatype_size;
array->size = size;
array->data = malloc(array->size * array->datatype_size);
return array;
}
static INLINE void array_destroy(struct array *array)
{
if (array)
free(array->data);
free(array);
}
static INLINE void array_resize(struct array *array, int num)
{
VGint size = array->datatype_size * num;
void *data = malloc(size);
memcpy(data, array->data, array->size * array->datatype_size);
free(array->data);
array->data = data;
array->size = num;
array->num_elements = (array->num_elements > num) ? num :
array->num_elements;
}
static INLINE void array_append_data(struct array *array,
const void *data, int num_elements)
{
VGbyte *adata;
while (array->num_elements + num_elements > array->size) {
array_resize(array, (array->num_elements + num_elements) * 1.5);
}
adata = (VGbyte *)array->data;
memcpy(adata + (array->num_elements * array->datatype_size), data,
num_elements * array->datatype_size);
array->num_elements += num_elements;
}
static INLINE void array_change_data(struct array *array,
const void *data,
int start_idx,
int num_elements)
{
VGbyte *adata = (VGbyte *)array->data;
memcpy(adata + (start_idx * array->datatype_size), data,
num_elements * array->datatype_size);
}
static INLINE void array_remove_element(struct array *array,
int idx)
{
VGbyte *adata = (VGbyte *)array->data;
memmove(adata + (idx * array->datatype_size),
adata + ((idx + 1) * array->datatype_size),
(array->num_elements - idx - 1) * array->datatype_size);
--array->num_elements;
}
static INLINE void array_reset(struct array *array)
{
array->num_elements = 0;
}
#endif
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