void BLI_mempool_free(BLI_mempool *pool, void *addr);
void BLI_mempool_destroy(BLI_mempool *pool);
int BLI_mempool_count(BLI_mempool *pool);
+void *BLI_mempool_findelem(BLI_mempool *pool, const int index);
/** iteration stuff. note: this may easy to produce bugs with **/
/*private structure*/
struct BLI_mempool {
struct ListBase chunks;
- int esize, csize, pchunk; /* size of elements and chunks in bytes
- * and number of elements per chunk*/
+ int esize; /* element size in bytes */
+ int csize; /* chunk size in bytes */
+ int pchunk; /* number of elements per chunk */
short use_sysmalloc, allow_iter;
/* keeps aligned to 16 bits */
}
}
+void *BLI_mempool_findelem(BLI_mempool *pool, const int index)
+{
+ if ((index >= 0) && (index < pool->totused)) {
+ BLI_mempool_chunk *mpchunk;
+ int i= 0;
+
+ for (mpchunk = pool->chunks.first; mpchunk; mpchunk = mpchunk->next) {
+ if (index < i + pool->pchunk) {
+ return ((char *)mpchunk->data) + (pool->esize * (index - i));
+ }
+ i += pool->pchunk;
+ }
+ }
+
+ return NULL;
+}
+
void BLI_mempool_iternew(BLI_mempool *pool, BLI_mempool_iter *iter)
{
if (!pool->allow_iter) {