| /* |
| * Copyright (c) 2021 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "pas_config.h" |
| |
| #if LIBPAS_ENABLED |
| |
| #include "pas_enumerate_unaccounted_pages_as_meta.h" |
| |
| #include "pas_enumerator.h" |
| #include "pas_ptr_hash_set.h" |
| #include "pas_ptr_min_heap.h" |
| #include "pas_root.h" |
| |
| bool pas_enumerate_unaccounted_pages_as_meta(pas_enumerator* enumerator) |
| { |
| size_t index; |
| pas_ptr_min_heap ptr_heap; |
| void* span_begin; |
| void* span_end; |
| void* page; |
| |
| if (!enumerator->record_meta) |
| return true; |
| |
| pas_ptr_min_heap_construct(&ptr_heap); |
| |
| for (index = pas_ptr_hash_set_entry_index_end(enumerator->unaccounted_pages); index--;) { |
| page = *pas_ptr_hash_set_entry_at_index(enumerator->unaccounted_pages, index); |
| |
| if (pas_ptr_hash_set_entry_is_empty_or_deleted(page)) |
| continue; |
| |
| PAS_ASSERT(page); |
| |
| pas_ptr_min_heap_add(&ptr_heap, page, &enumerator->allocation_config); |
| } |
| |
| span_begin = NULL; |
| span_end = NULL; |
| while ((page = pas_ptr_min_heap_take_min(&ptr_heap))) { |
| if (span_end != page) { |
| PAS_ASSERT(page > span_end); |
| pas_enumerator_record( |
| enumerator, |
| span_begin, |
| (uintptr_t)span_end - (uintptr_t)span_begin, |
| pas_enumerator_meta_record); |
| span_begin = page; |
| } |
| span_end = (char*)page + enumerator->root->page_malloc_alignment; |
| } |
| pas_enumerator_record( |
| enumerator, |
| span_begin, |
| (uintptr_t)span_end - (uintptr_t)span_begin, |
| pas_enumerator_meta_record); |
| |
| return true; |
| } |
| |
| #endif /* LIBPAS_ENABLED */ |