Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Kotlin/Native
Search
stormcat24
October 19, 2017
Programming
0
940
Kotlin/Native
2017/10/19 CA.kt #3
stormcat24
October 19, 2017
Tweet
Share
More Decks by stormcat24
See All by stormcat24
素早く賢く失敗するDeveloper Productivityの実現を目指して
stormcat24
4
4.4k
KubernetesのマニフェストをそれなりにCIしたい
stormcat24
4
1.2k
令和時代のSaaS開発
stormcat24
1
240
History in 5 years of CircleCI and CyberAgent
stormcat24
3
800
Kubernetes Handson Osaka
stormcat24
5
540
Kubernetes Handson
stormcat24
5
4.2k
DockerとKubernetesでアプリケーション開発にコンテナをフル活用!
stormcat24
0
290
Base Image Journey 2018
stormcat24
29
130k
kotlin-fest
stormcat24
13
17k
Other Decks in Programming
See All in Programming
UnJSで簡単に始めるCLIツール開発 / cli-tool-development-with-unjs
aoseyuu
2
300
App Router 悲喜交々
quramy
7
380
The Efficiency Paradox and How to Save Yourself and the World
hollycummins
0
180
Unlocking Python's Core Magic
leew
0
130
How to debug Xdebug... or any other weird bug in PHP
dunglas
1
930
ROS 2のZenoh対応とZenohのROS 2対応
takasehideki
2
300
dbt-ga4パッケージを実業務に導入してみた話
t_tokumaru_feedcorp
0
130
学生の時に開催したPerl入学式をきっかけにエンジニアが組織に馴染むために勉強会を主催や仲間と参加して職能間の境界を越えていく
ohmori_yusuke
1
130
デバッグの話 / Debugging for Beginners
kaityo256
PRO
8
550
実践Dash - 手を抜きながら本気で作るデータApplicationの基本と応用 / Dash for Python and Baseball
shinyorke
2
460
Quarto Clean Theme
nicetak
0
220
Kotlin Multiplatform at Stable and Beyond (Kotlin Vienna, October 2024)
zsmb
2
360
Featured
See All Featured
Testing 201, or: Great Expectations
jmmastey
38
7k
Fantastic passwords and where to find them - at NoRuKo
philnash
50
2.8k
It's Worth the Effort
3n
183
27k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
25
660
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
46
4.9k
Speed Design
sergeychernyshev
22
490
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
355
29k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
48k
BBQ
matthewcrist
85
9.2k
Mobile First: as difficult as doing things right
swwweet
222
8.8k
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
105
48k
StorybookのUI Testing Handbookを読んだ
zakiyama
26
5.1k
Transcript
Kotlin/Native CA.kt #3 @stormcat24
stormcat24 ‣ CyberAgent, Inc. ‣ FRESH! https://freshlive.tv ‣ https://blog.stormcat.io ‣
Docker Comedian
Ice Break?
Written by @ngsw_taro Congratulations!
I reviewed 2nd, 3rd parts. ‣SparkFramework with Kotlin ‣Spring Boot
with Kotlin
Kotlin/Native
What?
None
“Kotlin/Native that compiles Kotlin directly to machine.”
“without any virtual machine.” (standalone executables)
Kotlin/Native is ‣Compiles directly to native code via LLVM ‣Call
native libraries ‣Cross Platform ‣Windows/Linux/macOS/iOS/Android/Raspberry Pi ‣Version 0.3
Setup $ git clone
[email protected]
:JetBrains/kotlin-native.git $ cd kotlin-native (kotlin-native)$ git
checkout v0.3.4 Get Kotlin/Native Build (kotlin-native)$ ./gradlew dependencies:update (kotlin-native)$ ./gradlew dist (kotlin-native)$ ./gradlew cross_dist Path $ export PATH=$PATH:path-to-path/kotlin-native/dist/bin
Try Quickly fun main(args: Array<String>) { // Not System.out.println() println(“Hello!
Kotlin/Native“) } hello.kt compile $ kotlinc hello.kt -o hello KtFile: hello.kt Execute $ ./hello.kexe Hello! Kotlin/Native
build.gradle buildscript { repositories { mavenCentral() maven { url "https://dl.bintray.com/jetbrains/kotlin-native-dependencies"
} } dependencies { classpath "org.jetbrains.kotlin:kotlin-native-gradle-plugin:0.3.3" } } apply plugin: 'konan' konanArtifacts { KonanExample { } }
Native Library
Today’s Example HTTP GET Request By using libcurl
Create *.def file ‣Library definition file ‣Link Kotlin/Native to Native
libraries ‣Generate interoperability stubs ‣Define in build.gradle
Define *.def file headers = curl/curl.h compilerOpts=-I/usr/local/include linkerOpts.osx = -L/opt/local/lib
-L/usr/local/opt/curl/lib -lcurl src/main/c_interop/libcurl.def build.gradle apply plugin: 'konan' konanInterop { Libcurl { includeDirs '/usr/local/opt/curl/include', '.' } } konanArtifacts { KonanExample { useInterop 'libcurl' } }
Implementation curl.kt import kotlinx.cinterop.* import libcurl.* fun main(args: Array<String>): Unit
{ if (args.size == 0) { return } val url = args.first() val curl = curl_easy_init() curl_easy_setopt(curl, CURLOPT_URL, url) val res = curl_easy_perform(curl) when (res) { CURLE_OK -> println("HTTP Request OK") else -> println("HTTP Request NG") } }
Call Library In C #include <curl/curl.h> CURLcode curl_easy_perform(CURL * easy_handle);
fun curl_easy_perform(curl: COpaquePointer?): CURLcode { return kniBridge40(curl.rawValue) } typealias CURLcode = kotlin.Int val CURLE_OK: CURLcode = 0 val CURLE_UNSUPPORTED_PROTOCOL: CURLcode = 1 val CURLE_FAILED_INIT: CURLcode = 2 … Stub in Kotlin/Native
Execute Build Execute $ ./gradlew build $ ls build/konan/bin Curl.kexe
Curl.kt.bc $ build/konan/bin/Curl.kexe https://blog.stormcat.io <!DOCTYPE html> <html lang="ja-jp"> <head> <meta charset="utf-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> (...) HTTP Request OK
Interoperability
Interop types ‣Int => kotlin.Int ‣T* => CPointer<T> ‣void* =>
COpaquePointer? ‣
Memory Management ‣Automated memory management by Cycle Collector ‣https://github.com/JetBrains/kotlin-native/blob/master/ runtime/src/main/cpp/Memory.cpp
‣When using Native Library…?
Memory allocation Allocate memory val buffer = nativeHeap.allocArray<ByteVar>(size) ... nativeHeap.free(buffer)
memScoped val fileSize = memScoped { val statBuf = alloc<statStruct>() val error = stat("/", statBuf.ptr) statBuf.st_size }
Use IDEA
<- Uncheck Java
Code Completion
Impressions
Impressions ‣Very experimental and challenging ‣Interoperability is difficult ‣Lack of
Ecosystem, fundamental libraries ‣Not enough code completion ‣If gRPC support Kotlin/Native?
Thanks✋