swift/benchmark/single-source/BufferFind.swift at main · swiftlang/swift · GitHub

Name: swift/benchmark/single-source/BufferFind.swift at main · swiftlang/swift · GitHub
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//===--- BufferFind.swift -------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 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

publicvarbenchmarks:[BenchmarkInfo]=[
 // size 1000, alignment 0
BenchmarkInfo(
 name:"RawBuffer.1000.findFirst",
 runFunction: run_BufferFindFirst,
 tags:[.validation,.api],
 setUpFunction: buffer1000Setup,
 tearDownFunction: bufferTeardown
),
BenchmarkInfo(
 name:"RawBuffer.1000.findLast",
 runFunction: run_BufferFindLast,
 tags:[.validation,.api],
 setUpFunction: buffer1000Setup,
 tearDownFunction: bufferTeardown
),
 // size 128, alignment 0
BenchmarkInfo(
 name:"RawBuffer.128.findFirst",
 runFunction: run_BufferFindFirst,
 tags:[.validation,.api,.skip],
 setUpFunction: buffer128Setup,
 tearDownFunction: bufferTeardown
),
BenchmarkInfo(
 name:"RawBuffer.128.findLast",
 runFunction: run_BufferFindLast,
 tags:[.validation,.api],
 setUpFunction: buffer128Setup,
 tearDownFunction: bufferTeardown
),
 // size 39, alignment 0
BenchmarkInfo(
 name:"RawBuffer.39.findFirst",
 runFunction: run_BufferFindFirst,
 tags:[.validation,.api],
 setUpFunction: buffer39Setup,
 tearDownFunction: bufferTeardown
),
BenchmarkInfo(
 name:"RawBuffer.39.findLast",
 runFunction: run_BufferFindLast,
 tags:[.validation,.api],
 setUpFunction: buffer39Setup,
 tearDownFunction: bufferTeardown
),
 // size 7, alignment 0
BenchmarkInfo(
 name:"RawBuffer.7.findFirst",
 runFunction: run_BufferFindFirst,
 tags:[.validation,.api],
 setUpFunction: buffer7Setup,
 tearDownFunction: bufferTeardown
),
BenchmarkInfo(
 name:"RawBuffer.7.findLast",
 runFunction: run_BufferFindLast,
 tags:[.validation,.api],
 setUpFunction: buffer7Setup,
 tearDownFunction: bufferTeardown
)
]

varbuffer:UnsafeMutableRawBufferPointer=.init(start:nil, count:0)

func buffer1000Setup(){
bufferSetup(size:1000, alignment:0)
}

func buffer128Setup(){
bufferSetup(size:128, alignment:0)
}

func buffer39Setup(){
bufferSetup(size:39, alignment:0)
}

func buffer7Setup(){
bufferSetup(size:7, alignment:0)
}

func bufferTeardown(){
 buffer.deallocate()
 buffer =.init(start:nil, count:0)
}

func bufferSetup(size:Int, alignment:Int){
 buffer =UnsafeMutableRawBufferPointer.allocate(byteCount: size, alignment: alignment)
 buffer.initializeMemory(as:UInt8.self, repeating:UInt8.min)
buffer[size /2]=UInt8.max
}

@inline(never)
publicfunc run_BufferFindFirst(n:Int){
varoffset=0
for_in0..< n *10_000{
iflet index = buffer.firstIndex(of:UInt8.max){
 offset += index
}
}
blackHole(offset)
}

@inline(never)
publicfunc run_BufferFindLast(n:Int){
varoffset=0
for_in0..< n *10_000{
iflet index = buffer.lastIndex(of:UInt8.max){
 offset += index
}
}
blackHole(offset)
}