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525001f7a7
I had optimistically written the code here optimistically hoping #7837 would land in time for me to merge, but that didn't happen, so adjust some things to match the current 12-byte object header size on 32-bit, and introduce some ABI constants for the expected 32- and 64-bit object header sizes we can assert against so that we have some robustness when it eventually changes again. Implements rdar://problem/31768303.
104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
//===--- GlobalObjects.h - Statically-initialized objects -------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// Objects that are allocated at global scope instead of on the heap,
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// and statically initialized to avoid synchronization costs, are
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// defined here.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_STDLIB_SHIMS_GLOBALOBJECTS_H_
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#define SWIFT_STDLIB_SHIMS_GLOBALOBJECTS_H_
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#include "SwiftStdint.h"
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#include "HeapObject.h"
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#include "Visibility.h"
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#ifdef __cplusplus
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namespace swift { extern "C" {
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#endif
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struct _SwiftArrayBodyStorage {
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__swift_intptr_t count;
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__swift_uintptr_t _capacityAndFlags;
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};
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struct _SwiftEmptyArrayStorage {
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struct HeapObject header;
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struct _SwiftArrayBodyStorage body;
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};
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SWIFT_RUNTIME_STDLIB_INTERFACE
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struct _SwiftEmptyArrayStorage _swiftEmptyArrayStorage;
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struct _SwiftUnsafeBitMap {
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__swift_uintptr_t *values;
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__swift_intptr_t bitCount;
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};
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struct _SwiftDictionaryBodyStorage {
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__swift_intptr_t capacity;
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__swift_intptr_t count;
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struct _SwiftUnsafeBitMap initializedEntries;
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void *keys;
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void *values;
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};
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struct _SwiftSetBodyStorage {
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__swift_intptr_t capacity;
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__swift_intptr_t count;
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struct _SwiftUnsafeBitMap initializedEntries;
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void *keys;
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};
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struct _SwiftEmptyDictionaryStorage {
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struct HeapObject header;
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struct _SwiftDictionaryBodyStorage body;
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__swift_uintptr_t entries;
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};
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struct _SwiftEmptySetStorage {
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struct HeapObject header;
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struct _SwiftSetBodyStorage body;
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__swift_uintptr_t entries;
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};
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SWIFT_RUNTIME_STDLIB_INTERFACE
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struct _SwiftEmptyDictionaryStorage _swiftEmptyDictionaryStorage;
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SWIFT_RUNTIME_STDLIB_INTERFACE
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struct _SwiftEmptySetStorage _swiftEmptySetStorage;
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struct _SwiftHashingSecretKey {
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__swift_uint64_t key0;
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__swift_uint64_t key1;
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};
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SWIFT_RUNTIME_STDLIB_INTERFACE
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struct _SwiftHashingSecretKey _swift_stdlib_Hashing_secretKey;
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SWIFT_RUNTIME_STDLIB_INTERFACE
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__swift_uint64_t _swift_stdlib_HashingDetail_fixedSeedOverride;
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#ifdef __cplusplus
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static_assert(std::is_pod<_SwiftEmptyArrayStorage>::value,
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"empty array type should be POD");
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static_assert(std::is_pod<_SwiftEmptyDictionaryStorage>::value,
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"empty dictionary type should be POD");
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static_assert(std::is_pod<_SwiftEmptySetStorage>::value,
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"empty set type should be POD");
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}} // extern "C", namespace swift
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#endif
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#endif
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