Function _mi_page_free_collect

3rd/mimalloc-2.0.9/src/page.c:206–237

}

void _mi_page_free_collect(mi_page_t* page, bool force) {
  mi_assert_internal(page!=NULL);

  // collect the thread free list
  if (force || mi_page_thread_free(page) != NULL) {  // quick test to avoid an atomic operation
    _mi_page_thread_free_collect(page);
  }

  // and the local free list
  if (page->local_free != NULL) {
    if mi_likely(page->free == NULL) {
      // usual case
      page->free = page->local_free;
      page->local_free = NULL;
      page->is_zero = false;
    }
    else if (force) {
      // append -- only on shutdown (force) as this is a linear operation
      mi_block_t* tail = page->local_free;
      mi_block_t* next;
      while ((next = mi_block_next(page, tail)) != NULL) {
        tail = next;
      }
      mi_block_set_next(page, tail, page->free);
      page->free = page->local_free;
      page->local_free = NULL;
      page->is_zero = false;
    }
  }

  mi_assert_internal(!force || page->local_free == NULL);
}