Function mi_slices_start_iterate

3rd/mimalloc-2.0.9/src/segment.c:1270–1276

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static mi_slice_t* mi_slices_start_iterate(mi_segment_t* segment, const mi_slice_t** end) {
  mi_slice_t* slice = &segment->slices[0];
  *end = mi_segment_slices_end(segment);
  mi_assert_internal(slice->slice_count>0 && slice->xblock_size>0); // segment allocated page
  slice = slice + slice->slice_count; // skip the first segment allocated page
  return slice;
}

// Possibly free pages and check if free space is available
static bool mi_segment_check_free(mi_segment_t* segment, size_t slices_needed, size_t block_size, mi_segments_tld_t* tld)