| /* |
| * Copyright (c) 2019-2020 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. |
| */ |
| |
| #ifndef PAS_SHARED_HANDLE_OR_PAGE_BOUNDARY_INLINES_H |
| #define PAS_SHARED_HANDLE_OR_PAGE_BOUNDARY_INLINES_H |
| |
| #include "pas_shared_handle_or_page_boundary.h" |
| |
| #include "pas_segregated_page.h" |
| #include "pas_segregated_shared_handle.h" |
| #include "pas_utility_heap_config.h" |
| |
| PAS_BEGIN_EXTERN_C; |
| |
| static PAS_ALWAYS_INLINE pas_shared_handle_or_page_boundary |
| pas_wrap_shared_handle(pas_segregated_shared_handle* handle, |
| pas_segregated_page_config page_config) |
| { |
| if (!pas_segregated_page_config_is_utility(page_config)) { |
| PAS_TESTING_ASSERT(pas_segregated_page_is_allocated( |
| (uintptr_t)handle, PAS_UTILITY_HEAP_CONFIG.small_segregated_config)); |
| } |
| return (pas_shared_handle_or_page_boundary)((uintptr_t)handle | PAS_IS_SHARED_HANDLE_BIT); |
| } |
| |
| static inline pas_segregated_shared_handle* |
| pas_unwrap_shared_handle_no_liveness_checks(pas_shared_handle_or_page_boundary shared_handle_or_page) |
| { |
| PAS_ASSERT(pas_is_wrapped_shared_handle(shared_handle_or_page)); |
| return (pas_segregated_shared_handle*)( |
| (uintptr_t)shared_handle_or_page & ~PAS_IS_SHARED_HANDLE_BIT); |
| } |
| |
| static PAS_ALWAYS_INLINE pas_segregated_shared_handle* |
| pas_unwrap_shared_handle(pas_shared_handle_or_page_boundary shared_handle_or_page, |
| pas_segregated_page_config page_config) |
| { |
| pas_segregated_shared_handle* result; |
| result = pas_unwrap_shared_handle_no_liveness_checks(shared_handle_or_page); |
| if (!pas_segregated_page_config_is_utility(page_config)) { |
| PAS_TESTING_ASSERT(pas_segregated_page_is_allocated( |
| (uintptr_t)result, PAS_UTILITY_HEAP_CONFIG.small_segregated_config)); |
| } |
| return result; |
| } |
| |
| static PAS_ALWAYS_INLINE void* |
| pas_shared_handle_or_page_boundary_get_page_boundary_no_liveness_checks( |
| pas_shared_handle_or_page_boundary shared_handle_or_page) |
| { |
| if (pas_is_wrapped_shared_handle(shared_handle_or_page)) |
| return pas_unwrap_shared_handle_no_liveness_checks(shared_handle_or_page)->page_boundary; |
| |
| return pas_unwrap_page_boundary(shared_handle_or_page); |
| } |
| |
| static PAS_ALWAYS_INLINE void* |
| pas_shared_handle_or_page_boundary_get_page_boundary( |
| pas_shared_handle_or_page_boundary shared_handle_or_page, |
| pas_segregated_page_config page_config) |
| { |
| if (pas_is_wrapped_shared_handle(shared_handle_or_page)) |
| return pas_unwrap_shared_handle(shared_handle_or_page, page_config)->page_boundary; |
| |
| return pas_unwrap_page_boundary(shared_handle_or_page); |
| } |
| |
| PAS_END_EXTERN_C; |
| |
| #endif /* PAS_SHARED_HANDLE_OR_PAGE_BOUNDARY_INLINES_H */ |
| |