| /************************************************************************** |
| * |
| * 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 |