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9177107940
dispatch_once calls on every load from it Performance improvements, as reported by the perf testing buildbot: Histogram -18.81% TwoSum -17.42% RGBHistogram -9.65% Regressions: InsertionSort 5.59% ArrayOfRef 3.99% SwiftStructuresInsertionSort 5.29% PrimeNum 6.09% These regressions are bogus. The tests that "regressed" don't do any hashing at all. Swift SVN r23995
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
//===--- GlobalObjects.h - Statically-initialized objects -----------------===//
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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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://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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#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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extern struct _SwiftEmptyArrayStorage _swiftEmptyArrayStorage;
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extern __swift_uint64_t _swift_stdlib_HashingDetail_fixedSeedOverride;
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#ifdef __cplusplus
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}} // extern "C", namespace swift
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#endif
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#endif
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