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/* |
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* i-scream libstatgrab |
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* http://www.i-scream.org |
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* Copyright (C) 2000-2004 i-scream |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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* 02111-1307 USA |
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* |
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* $Id$ |
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*/ |
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|
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#include <stdlib.h> |
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typedef void (*vector_init_function)(void *item); |
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size_t item_size; |
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int used_count; |
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int alloc_count; |
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int error; |
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int block_size; |
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vector_init_function init_fn; |
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vector_destroy_function destroy_fn; |
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} vector_header; |
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|
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int statgrab_vector_resize(void **vector, vector_header *h, int count); |
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/* Declare a vector. Specify the init/destroy functions as NULL if you don't |
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* need them. The block size is how many items to allocate at once. */ |
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#define VECTOR_DECLARE(name, item_type, block_size, init_fn, destroy_fn) \ |
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item_type * name = NULL; \ |
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#define VECTOR_HEADER(name, item_type, block_size, init_fn, destroy_fn) \ |
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vector_header name##_header = { \ |
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sizeof(item_type), \ |
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0, \ |
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0, \ |
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0, \ |
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block_size, \ |
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(vector_init_function) init_fn, \ |
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(vector_destroy_function) destroy_fn \ |
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} |
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|
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/* Internal function to resize the vector. */ |
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void *sg_vector_resize(void *vector, vector_header *h, int count); |
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|
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/* Declare a vector. Specify the init/destroy functions as NULL if you don't |
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* need them. The block size is how many items to allocate at once. */ |
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#define VECTOR_DECLARE(name, item_type, block_size, init_fn, destroy_fn) \ |
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item_type *name = NULL; \ |
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VECTOR_HEADER(name, item_type, block_size, init_fn, destroy_fn) |
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|
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/* As VECTOR_DECLARE, but for a static vector. */ |
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#define VECTOR_DECLARE_STATIC(name, item_type, block_size, init_fn, destroy_fn) \ |
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static item_type *name = NULL; \ |
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static VECTOR_HEADER(name, item_type, block_size, init_fn, destroy_fn) |
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|
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/* Return the current size of a vector. */ |
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#define VECTOR_SIZE(name) \ |
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name##_header.used_count |
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* out-of-memory, the old contents of the vector will be destroyed and the old |
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* vector will be freed. */ |
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#define VECTOR_RESIZE(name, num_items) \ |
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statgrab_vector_resize((void **) &name, &name##_header, num_items) |
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(name = sg_vector_resize((char *) name, &name##_header, num_items), \ |
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name##_header.error) |
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/* Free a vector, destroying its contents. */ |
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#define VECTOR_FREE(name) \ |
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VECTOR_RESIZE(name, 0) |
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– |
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