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tsolomkotsolomko
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Add benchmarks for ByteReader
1 parent 7ca90eb commit fec65a3

4 files changed

Lines changed: 124 additions & 2 deletions

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‎BitByteData.xcodeproj/project.pbxproj‎

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objects = {
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/* Begin PBXBuildFile section */
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06ADF4CB214BB86600B8F0E9 /* ByteReaderBenchmarks.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06ADF4CA214BB86600B8F0E9 /* ByteReaderBenchmarks.swift */; };
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06F065751FFAEA8700312A82 /* LsbBitReader.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06F065571FFAEA1F00312A82 /* LsbBitReader.swift */; };
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06F065761FFAEA8700312A82 /* BitReader.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06F065581FFAEA1F00312A82 /* BitReader.swift */; };
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06F065771FFAEA8700312A82 /* ByteReader.swift in Sources */ = {isa = PBXBuildFile; fileRef = 06F065591FFAEA1F00312A82 /* ByteReader.swift */; };
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/* Begin PBXFileReference section */
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062BE3301FFBB9E300343CAD /* LinuxMain.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LinuxMain.swift; sourceTree = "<group>"; };
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06ADF4CA214BB86600B8F0E9 /* ByteReaderBenchmarks.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ByteReaderBenchmarks.swift; sourceTree = "<group>"; };
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06F065571FFAEA1F00312A82 /* LsbBitReader.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LsbBitReader.swift; sourceTree = "<group>"; };
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06F065581FFAEA1F00312A82 /* BitReader.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BitReader.swift; sourceTree = "<group>"; };
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06F065591FFAEA1F00312A82 /* ByteReader.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ByteReader.swift; sourceTree = "<group>"; };
@@ -105,6 +107,7 @@
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06F065631FFAEA1F00312A82 /* MsbBitReaderTests.swift */,
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06F065641FFAEA1F00312A82 /* LsbBitWriterTests.swift */,
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06F065621FFAEA1F00312A82 /* MsbBitWriterTests.swift */,
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06ADF4CA214BB86600B8F0E9 /* ByteReaderBenchmarks.swift */,
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);
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path = BitByteDataTests;
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sourceTree = "<group>";
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isa = PBXSourcesBuildPhase;
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buildActionMask = 2147483647;
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files = (
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06ADF4CB214BB86600B8F0E9 /* ByteReaderBenchmarks.swift in Sources */,
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06F0658F1FFAEAA900312A82 /* LsbBitReaderTests.swift in Sources */,
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06F065901FFAEAA900312A82 /* ByteReaderTests.swift in Sources */,
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06F0658C1FFAEAA900312A82 /* MsbBitWriterTests.swift in Sources */,

‎Sources/ByteReader.swift‎

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@@ -76,7 +76,7 @@ public class ByteReader {
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public func int(fromBytes count: Int) -> Int {
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precondition(count >= 0)
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precondition(bytesLeft >= count)
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// TODO: If uintX() could be force inlined or something in the future than probably it would make sense
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// TODO: If uintX() could be force inlined or something in the future then probably it would make sense
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// to use them for `count` == 2, 4 or 8.
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var result = 0
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for i in 0..<count {

‎Tests/BitByteDataTests/ByteReaderBenchmarks.swift‎

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// Copyright (c) 2018 Timofey Solomko
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// Licensed under MIT License
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//
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// See LICENSE for license information
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import XCTest
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import BitByteData
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class ByteReaderBenchmarks: XCTestCase {
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func testByte() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<5_000_000 {
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_ = byteReader.byte()
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}
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}
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}
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func testBytes() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<500_000 {
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_ = byteReader.bytes(count: 20)
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}
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}
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}
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func testIntFromBytes() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<1_000_000 {
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_ = byteReader.int(fromBytes: 7)
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}
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}
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}
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func testUint16() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<1_000_000 {
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_ = byteReader.uint16()
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}
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}
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}
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func testUint16FromBytes() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<2_000_000 {
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_ = byteReader.uint16(fromBytes: 1)
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}
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}
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}
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func testUint32() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<500_000 {
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_ = byteReader.uint32()
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}
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}
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}
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func testUint32FromBytes() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<500_000 {
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_ = byteReader.uint32(fromBytes: 3)
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}
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}
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}
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func testUint64() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<1_00_000 {
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_ = byteReader.uint64()
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}
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}
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}
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func testUint64FromBytes() {
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self.measure {
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let byteReader = ByteReader(data: Data(count: 10_485_760)) // 10 MB
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for _ in 0..<1_000_000 {
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_ = byteReader.uint64(fromBytes: 7)
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}
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}
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}
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}

‎Tests/LinuxMain.swift‎

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@@ -108,10 +108,27 @@ extension MsbBitWriterTests {
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}
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}
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extension ByteReaderBenchmarks {
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static var allTests: [(String, (ByteReaderBenchmarks) -> () -> Void)] {
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return [
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("testByte", testByte),
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("testBytes", testBytes),
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("testIntFromBytes", testIntFromBytes),
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("testUint16", testUint16),
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("testUint16FromBytes", testUint16FromBytes),
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("testUint32", testUint32),
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("testUint32FromBytes", testUint32FromBytes),
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("testUint64", testUint64),
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("testUint64FromBytes", testUint64FromBytes)
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]
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}
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}
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XCTMain([
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testCase(ByteReaderTests.allTests),
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testCase(LsbBitReaderTests.allTests),
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testCase(MsbBitReaderTests.allTests),
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testCase(LsbBitWriterTests.allTests),
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testCase(MsbBitWriterTests.allTests)
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testCase(MsbBitWriterTests.allTests),
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testCase(ByteReaderBenchmarks.allTests)
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])

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