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//===--- ArrayOfGenericRef.swift ------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2021 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
// This benchmark tests creation and destruction of an array of enum
// and generic type bound to nontrivial types.
//
// For comparison, we always create three arrays of 1,000 words.
import TestsUtils
public let benchmarks =
BenchmarkInfo(
name: "ArrayOfGenericRef",
runFunction: run_ArrayOfGenericRef,
tags: [.validation, .api, .Array],
legacyFactor: 10)
protocol Constructible {
associatedtype Element
init(e:Element)
}
class ConstructibleArray<T:Constructible> {
var array: [T]
init(_ e:T.Element) {
array = [T]()
array.reserveCapacity(1_000)
for _ in 0...1_000 {
array.append(T(e:e))
}
}
}
class GenericRef<T> : Constructible {
typealias Element=T
var x: T
required init(e:T) { self.x = e }
}
// Reference to a POD class.
@inline(never)
func genPODRefArray() {
blackHole(ConstructibleArray<GenericRef<Int>>(3))
// should be a nop
}
class Dummy {}
// Reference to a reference. The nested reference is shared across elements.
@inline(never)
func genCommonRefArray() {
let d = Dummy()
blackHole(ConstructibleArray<GenericRef<Dummy>>(d))
// should be a nop
}
// Reuse the same enum value for each element.
class RefArray<T> {
var array: [T]
init(_ i:T, count:Int = 1_000) {
array = [T](repeating: i, count: count)
}
}
// enum holding a reference.
@inline(never)
func genRefEnumArray() {
let d = Dummy()
blackHole(RefArray<Dummy?>(d))
// should be a nop
}
struct GenericVal<T> : Constructible {
typealias Element=T
var x: T
init(e:T) { self.x = e }
}
// Struct holding a reference.
@inline(never)
func genRefStructArray() {
let d = Dummy()
blackHole(ConstructibleArray<GenericVal<Dummy>>(d))
// should be a nop
}
@inline(never)
public func run_ArrayOfGenericRef(_ n: Int) {
for _ in 0..<n {
genPODRefArray()
genCommonRefArray()
genRefEnumArray()
genRefStructArray()
}
}
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