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//===--- CxxStringConversion.swift ----------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 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
import CxxStdlibPerformance
import CxxStdlib
let cxxStringSize = 1_000_000
let swiftStringSize = 25_000
var cxxString: std.string? = nil
var swiftString: String? = nil
public let benchmarks = [
BenchmarkInfo(
name: "CxxStringConversion.swift.to.cxx",
runFunction: run_swiftToCxx,
tags: [.validation, .bridging, .cxxInterop],
setUpFunction: {
swiftString = String(repeating: "abc012", count: swiftStringSize / 6)
}),
BenchmarkInfo(
name: "CxxStringConversion.cxx.to.swift",
runFunction: run_cxxToSwift,
tags: [.validation, .bridging, .cxxInterop],
setUpFunction: {
cxxString = std.string()
for i in 0..<cxxStringSize {
let char = std.string.value_type(65 + i % 10) // latin letters A-J
cxxString!.push_back(char)
}
}),
]
@inline(never)
public func run_swiftToCxx(_ n: Int) {
let str = swiftString!
for _ in 0..<n {
let x = std.string(str)
blackHole(x)
}
}
@inline(never)
public func run_cxxToSwift(_ n: Int) {
let str = cxxString!
for _ in 0..<n {
let x = String(str)
blackHole(x)
}
}
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