1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
//===--- PopFront.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
//
//===----------------------------------------------------------------------===//
import TestsUtils
public let benchmarks = [
BenchmarkInfo(name: "PopFrontArray",
runFunction: run_PopFrontArray,
tags: [.validation, .api, .Array],
legacyFactor: 20),
BenchmarkInfo(name: "PopFrontUnsafePointer",
runFunction: run_PopFrontUnsafePointer,
tags: [.validation, .api],
legacyFactor: 100),
]
let arrayCount = 1024
@inline(never)
public func run_PopFrontArray(_ n: Int) {
let orig = Array(repeating: 1, count: arrayCount)
var a = [Int]()
for _ in 1...n {
var result = 0
a.append(contentsOf: orig)
while a.count != 0 {
result += a[0]
a.remove(at: 0)
}
check(result == arrayCount)
}
}
@inline(never)
public func run_PopFrontUnsafePointer(_ n: Int) {
let orig = Array(repeating: 1, count: arrayCount)
let a = UnsafeMutablePointer<Int>.allocate(capacity: arrayCount)
for _ in 1...n {
for i in 0..<arrayCount {
a[i] = orig[i]
}
var result = 0
var count = arrayCount
while count != 0 {
result += a[0]
a.update(from: a + 1, count: count - 1)
count -= 1
}
check(result == arrayCount)
}
a.deallocate()
}
|
