juliuscanute

Ptrace

A system call responsible for a process attaching itself to another process: ptrace.

List all syscalls in mac os x

sudo dtrace -ln 'syscall:::entry'

How PTRACE was called?

juliuscanute

Building a dataset

• Google Dataset Search
• Kaggle

Define activities to record using Motion API

enum ActivityType: Int {
    case none, driveIt, shakeIt, chopIt
}

juliuscanute

static func initConfig() {
  multiConfig = startMultiConfig(apply: {
    $0.multiConfig(configuration: configuration())
  })

juliuscanute

class SampleApp : Application() {
    override fun onCreate() {
        super.onCreate()
        startMultiConfig {
            multiConfig(
                configuration = configuration()
            )
        }
    }
}

juliuscanute

implementation('com.juliuscanute.multiconfignoui:multiconfignoui:1.0.59@aar') {
  transitive = true
}

juliuscanute

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val config = MultiConfigure.getConfig()
        val colorConfig = config.getConfigPair("D")
        setContent {
            MaterialTheme {
                Greeting(
                    text = config.getConfigString("C"),
                    visibility = config.getConfigBoolean("A"),

juliuscanute

final class ConfigurationData: ObservableObject {
    /*...*/
    func setData(environment: String? = nil) {
        /*...*/
        let config: ConfigurationGetter = Environment.multiConfig!.getConfig()
        let text = config.getConfigString(userKey: "C")
        let visibility = config.getConfigBoolean(userKey: "A")
        let size = Int(config.getConfigInt(userKey: "B"))
        let currentChoice: KotlinPair = config.getConfigPair(userKey: "D")
        let choiceNo: Int = Int(currentChoice.second as! Int32)

juliuscanute

public enum Environment {
  /*...*/
  static func initConfig() {
    multiConfig = startMultiConfig(rootGroup: "group.julius.multiconfig",
                                   controller: getLaunchController(), apply: {
                                     $0.multiConfig(configuration: configuration())
                                   })
  }
  /*...*/
}

juliuscanute

class SampleApp : Application() {
    override fun onCreate() {
        super.onCreate()
        startMultiConfig(
            context = this,
            intent = Intent(this@SampleApp, MainActivity::class.java)
        ) {
            multiConfig(configuration = configuration())
        }
    }

juliuscanute

appConfig {
    config("FREE") {/*...*/}
    config("PREMIUM") {/*...*/}
}