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//===--- BufferFill.swift -------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2020 - 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: "BufferFillFromSlice",
runFunction: bufferFillFromSliceExecute,
tags: [.validation, .api],
setUpFunction: bufferFillFromSliceSetup,
tearDownFunction: bufferFillFromSliceTeardown),
BenchmarkInfo(name: "RawBufferCopyBytes",
runFunction: rawBufferCopyBytesExecute,
tags: [.validation, .api],
setUpFunction: rawBufferCopyBytesSetup,
tearDownFunction: rawBufferCopyBytesTeardown),
BenchmarkInfo(name: "RawBufferInitializeMemory",
runFunction: rawBufferInitializeMemoryExecute,
tags: [.validation, .api],
setUpFunction: rawBufferInitializeMemorySetup,
tearDownFunction: rawBufferInitializeMemoryTeardown),
BenchmarkInfo(name: "RawBuffer.copyContents",
runFunction: rawBufferCopyContentsExecute,
tags: [.validation, .api],
setUpFunction: rawBufferCopyContentsSetup,
tearDownFunction: rawBufferCopyContentsTeardown),
]
let c = 100_000
let a = Array(0..<c)
var b: UnsafeMutableBufferPointer<Int> = .init(start: nil, count: 0)
var r = Int.zero
public func bufferFillFromSliceSetup() {
assert(b.baseAddress == nil)
b = .allocate(capacity: c)
r = a.indices.randomElement()!
}
public func bufferFillFromSliceTeardown() {
b.deallocate()
b = .init(start: nil, count: 0)
}
@inline(never)
public func bufferFillFromSliceExecute(n: Int) {
// Measure performance when filling an UnsafeBuffer from a Slice
// of a Collection that supports `withContiguousStorageIfAvailable`
// See: https://github.com/apple/swift/issues/56846
for _ in 0..<n {
let slice = Slice(base: a, bounds: a.indices)
var (iterator, copied) = b.initialize(from: slice)
blackHole(b)
check(copied == a.count && iterator.next() == nil)
}
check(a[r] == b[r])
}
var ra: [UInt8] = []
var rb = UnsafeMutableRawBufferPointer(start: nil, count: 0)
public func rawBufferCopyBytesSetup() {
assert(rb.baseAddress == nil)
ra = a.withUnsafeBytes(Array.init)
r = ra.indices.randomElement()!
rb = .allocate(byteCount: ra.count, alignment: 1)
}
public func rawBufferCopyBytesTeardown() {
rb.deallocate()
rb = .init(start: nil, count: 0)
ra = []
}
@inline(never)
public func rawBufferCopyBytesExecute(n: Int) {
// Measure performance when copying bytes into an UnsafeRawBuffer
// from a Collection that supports `withContiguousStorageIfAvailable`
// See: https://github.com/apple/swift/issues/57233
for _ in 0..<n {
rb.copyBytes(from: ra)
blackHole(rb)
}
check(ra[r] == rb[r])
}
public func rawBufferInitializeMemorySetup() {
assert(rb.baseAddress == nil)
rb = .allocate(byteCount: a.count * MemoryLayout<Int>.stride, alignment: 1)
r = a.indices.randomElement()!
}
public func rawBufferInitializeMemoryTeardown() {
rb.deallocate()
rb = .init(start: nil, count: 0)
}
@inline(never)
public func rawBufferInitializeMemoryExecute(n: Int) {
// Measure performance when initializing an UnsafeRawBuffer
// from a Collection that supports `withContiguousStorageIfAvailable`
// See: https://github.com/apple/swift/issues/57324
for _ in 0..<n {
var (iterator, initialized) = rb.initializeMemory(as: Int.self, from: a)
blackHole(rb)
check(initialized.count == a.count && iterator.next() == nil)
}
let offset = rb.baseAddress!.advanced(by: r*MemoryLayout<Int>.stride)
let value = offset.load(as: Int.self)
check(value == a[r])
}
var r8: UnsafeRawBufferPointer = .init(start: nil, count: 0)
var b8: UnsafeMutableBufferPointer<UInt8> = .init(start: nil, count: 0)
public func rawBufferCopyContentsSetup() {
assert(r8.baseAddress == nil)
let count = a.count * MemoryLayout<Int>.stride
let rb = UnsafeMutableRawBufferPointer.allocate(
byteCount: count,
alignment: MemoryLayout<Int>.alignment)
a.withUnsafeBytes {
rb.copyMemory(from: $0)
}
r8 = UnsafeRawBufferPointer(rb)
assert(b8.baseAddress == nil)
b8 = .allocate(capacity: rb.count)
r = rb.indices.randomElement()!
}
public func rawBufferCopyContentsTeardown() {
r8.deallocate()
r8 = .init(start: nil, count: 0)
b8.deallocate()
b8 = .init(start: nil, count: 0)
}
@inline(never)
public func rawBufferCopyContentsExecute(n: Int) {
// Measure performance of copying bytes from an
// `UnsafeRawBufferPointer` to an `UnsafeMutableBufferPointer<UInt8>`.
// See: https://github.com/apple/swift/issues/52050
for _ in 0..<n {
var (iterator, initialized) = b8.initialize(from: r8)
blackHole(b8)
check(initialized == r8.count && iterator.next() == nil)
}
check(b8[r] == r8[r])
}
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