Function _bitmap_free_tidbuf

src/backend/access/bitmap/bitmapinsert.c:2101–2120

* _bitmap_free_tidbuf() -- release the space. */

 * _bitmap_free_tidbuf() -- release the space.
 */
static uint16
_bitmap_free_tidbuf(BMTIDBuffer* buf)
{
	uint16 bytes_freed = 0;

	if (buf->last_tids)
		pfree(buf->last_tids);
	if (buf->cwords)
		pfree(buf->cwords);

	bytes_freed = buf->num_cwords * sizeof(BM_HRL_WORD) +
		buf->num_cwords * sizeof(uint64);

	buf->num_cwords = 0;
	buf->curword = 0;
	/* Paranoia */
	MemSet(buf->hwords, 0, sizeof(BM_HRL_WORD) * BM_NUM_OF_HEADER_WORDS);

	return bytes_freed;
}

/*
 * insertsetbit() -- insert a given set bit into a bitmap