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Location: cpp/openttd-patchpack/source/pool.c - annotation
r3080:b7535a3e8c6b
2.2 KiB
text/x-c
(svn r3669) Really wipe all data when making a void tile
Thanks to Belugas, egladil and Rubidium for their inspiration and hard work, which all this stuff is based on
Thanks to Belugas, egladil and Rubidium for their inspiration and hard work, which all this stuff is based on
r2186:5ee653b1b5e1 r2186:5ee653b1b5e1 r1259:71cef82739e1 r1891:c5c5466afa35 r1299:07d5483b3f76 r2163:ae001e2aa5b0 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1833:b67040ded7d5 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 | /* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "functions.h"
#include "pool.h"
/**
* Clean a pool in a safe way (does free all blocks)
*/
void CleanPool(MemoryPool *pool)
{
uint i;
DEBUG(misc, 4)("[Pool] (%s) Cleaning pool..", pool->name);
/* Free all blocks */
for (i = 0; i < pool->current_blocks; i++)
free(pool->blocks[i]);
/* Free the block itself */
free(pool->blocks);
/* Clear up some critical data */
pool->total_items = 0;
pool->current_blocks = 0;
pool->blocks = NULL;
}
/**
* This function tries to increase the size of array by adding
* 1 block too it
*
* @return Returns false if the pool could not be increased
*/
bool AddBlockToPool(MemoryPool *pool)
{
/* Is the pool at his max? */
if (pool->max_blocks == pool->current_blocks)
return false;
pool->total_items = (pool->current_blocks + 1) * (1 << pool->block_size_bits);
DEBUG(misc, 4)("[Pool] (%s) Increasing size of pool to %d items (%d bytes)", pool->name, pool->total_items, pool->total_items * pool->item_size);
/* Increase the poolsize */
pool->blocks = realloc(pool->blocks, sizeof(pool->blocks[0]) * (pool->current_blocks + 1));
if (pool->blocks == NULL)
error("Pool: (%s) could not allocate memory for blocks", pool->name);
/* Allocate memory to the new block item */
pool->blocks[pool->current_blocks] = malloc(pool->item_size * (1 << pool->block_size_bits));
if (pool->blocks[pool->current_blocks] == NULL)
error("Pool: (%s) could not allocate memory for blocks", pool->name);
/* Clean the content of the new block */
memset(pool->blocks[pool->current_blocks], 0, pool->item_size * (1 << pool->block_size_bits));
/* Call a custom function if defined (e.g. to fill indexes) */
if (pool->new_block_proc != NULL)
pool->new_block_proc(pool->current_blocks * (1 << pool->block_size_bits));
/* We have a new block */
pool->current_blocks++;
return true;
}
/**
* Adds blocks to the pool if needed (and possible) till index fits inside the pool
*
* @return Returns false if adding failed
*/
bool AddBlockIfNeeded(MemoryPool *pool, uint index)
{
while (index >= pool->total_items) {
if (!AddBlockToPool(pool))
return false;
}
return true;
}
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