| /* |
| * Copyright (c) 2018-2021 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_thread_local_cache_layout.h" |
| |
| #include "pas_heap_lock.h" |
| #include "pas_large_utility_free_heap.h" |
| #include "pas_local_view_cache_node.h" |
| #include "pas_redundant_local_allocator_node.h" |
| #include "pas_segregated_size_directory_inlines.h" |
| #include "pas_utils.h" |
| |
| pas_thread_local_cache_layout_node pas_thread_local_cache_layout_first_node = NULL; |
| pas_thread_local_cache_layout_node pas_thread_local_cache_layout_last_node = NULL; |
| pas_allocator_index pas_thread_local_cache_layout_next_allocator_index = 0; |
| |
| pas_allocator_index pas_thread_local_cache_layout_add_node(pas_thread_local_cache_layout_node node) |
| { |
| static const bool verbose = false; |
| |
| pas_allocator_index result; |
| bool did_overflow; |
| |
| pas_heap_lock_assert_held(); |
| |
| PAS_ASSERT( |
| pas_thread_local_cache_layout_node_get_allocator_index_generic(node) |
| == (pas_allocator_index)UINT_MAX); |
| |
| PAS_ASSERT(!pas_thread_local_cache_layout_node_get_next(node)); |
| |
| result = pas_thread_local_cache_layout_next_allocator_index; |
| |
| PAS_ASSERT(result < (pas_allocator_index)UINT_MAX); |
| pas_thread_local_cache_layout_node_set_allocator_index(node, result); |
| |
| if (verbose) { |
| pas_log("pas_thread_local_cache_layout_add_node: node = %p, allocator_index = %u, " |
| "num_allocator_indices = %u\n", |
| node, result, pas_thread_local_cache_layout_num_allocator_indices(node)); |
| } |
| |
| did_overflow = __builtin_add_overflow( |
| pas_thread_local_cache_layout_next_allocator_index, |
| pas_thread_local_cache_layout_num_allocator_indices(node), |
| &pas_thread_local_cache_layout_next_allocator_index); |
| PAS_ASSERT(!did_overflow); |
| |
| pas_fence(); |
| |
| if (!pas_thread_local_cache_layout_first_node) { |
| PAS_ASSERT(!pas_thread_local_cache_layout_last_node); |
| PAS_ASSERT(!result); |
| pas_thread_local_cache_layout_first_node = node; |
| pas_thread_local_cache_layout_last_node = node; |
| } else { |
| PAS_ASSERT(pas_thread_local_cache_layout_last_node); |
| PAS_ASSERT(result); |
| pas_thread_local_cache_layout_node_set_next(pas_thread_local_cache_layout_last_node, node); |
| pas_thread_local_cache_layout_last_node = node; |
| } |
| |
| return result; |
| } |
| |
| pas_allocator_index pas_thread_local_cache_layout_add( |
| pas_segregated_size_directory* directory) |
| { |
| static const bool verbose = false; |
| |
| if (verbose) { |
| pas_log("Adding TLC layout node for directory = %p, object_size = %u, page_config_kind = %s\n", |
| directory, directory->object_size, |
| pas_segregated_page_config_kind_get_string(directory->base.page_config_kind)); |
| } |
| |
| return pas_thread_local_cache_layout_add_node( |
| pas_wrap_segregated_size_directory(directory)); |
| } |
| |
| pas_allocator_index pas_thread_local_cache_layout_duplicate( |
| pas_segregated_size_directory* directory) |
| { |
| pas_redundant_local_allocator_node* redundant_node; |
| |
| redundant_node = pas_redundant_local_allocator_node_create(directory); |
| |
| return pas_thread_local_cache_layout_add_node( |
| pas_wrap_redundant_local_allocator_node(redundant_node)); |
| } |
| |
| pas_allocator_index pas_thread_local_cache_layout_add_view_cache( |
| pas_segregated_size_directory* directory) |
| { |
| pas_local_view_cache_node* cache_node; |
| |
| cache_node = pas_local_view_cache_node_create(directory); |
| |
| return pas_thread_local_cache_layout_add_node(pas_wrap_local_view_cache_node(cache_node)); |
| } |
| |
| #endif /* LIBPAS_ENABLED */ |