klish/lub/dblockpool/dblockpool_free.c

#include <stdlib.h>

#include "private.h"

/*--------------------------------------------------------- */
void lub_dblockpool_free(lub_dblockpool_t * this, void *block)
{
	lub_dblockpool_chunk_t **chunk_ptr;

	/* find the chunk from which this derived. */
	for (chunk_ptr = &this->first_chunk;
	     *chunk_ptr; chunk_ptr = &(*chunk_ptr)->next) {
		const char *pool_start = (char *)&(*chunk_ptr)[1];
		const char *pool_end =
		    pool_start + (this->block_size * this->chunk_size);
		const char *ptr = block;

		if ((ptr >= pool_start) && (ptr < pool_end)) {
			/* found the right pool */
			lub_blockpool_free(&(*chunk_ptr)->pool, block);
			(*chunk_ptr)->count--;
			/* track the number of allocations */
			if (0 == (*chunk_ptr)->count) {
				lub_dblockpool_chunk_t *tmp = *chunk_ptr;
				/* removing last block from this chunk */
				*chunk_ptr = (*chunk_ptr)->next;
				free(tmp);
			}
			break;
		}
	}
}

/*--------------------------------------------------------- */