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Get Assembly Execution Context


Get Assembly Execution Context

By : Kawakaze
Date : November 27 2020, 11:01 PM
will be helpful for those in need Environment.UserInteractive probably suits your needs.
It indicates weather or not the user is able to interact with the process or not. Which user launched processes probably are, and process launched from IIS/Task scheduler probably aren't.
code :


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Is it possible for Global Execution Context to pop off the execution stack?

Is it possible for Global Execution Context to pop off the execution stack?


By : Elvin Mateo
Date : November 19 2020, 09:01 AM
around this issue When JS code starts to run, the Global Execution Context is created and sits at the bottom of the execution stack as to "accomodate" Global Variable Object and'this'. If it is the case for the execution stack to get empty after the whole JS code is run and there is no Global Execution Context, how are we still able to access the global variables (for example, I am running an html file with its JS code and after its completion, I am still able to see the values of global variables through Chrome console...) or how this still points to global object (there shouldn't be any 'this' if there wasn't any Execution Context!)? , The execution stack gets empty when the whole code is run.
Execution context and the execution context object in Javascript

Execution context and the execution context object in Javascript


By : Spectre
Date : March 29 2020, 07:55 AM
may help you . This has less to do with execution context and everything to do with function variable scope. You're passing in 'the hello argument' as an argument to the function and being local it is used instead of the hello var declared outside of the the function.
The var hello does nothing and if you were using use strict or a linter would probably raise a warning (trying to declare an existing variable).
code :
var hello = 'hello is assigned';

function prison() {
  console.log(hello);
  var hello;
  console.log(hello);
}

prison();
function prison() {
  var hello;
  console.log(hello);
  console.log(hello);
}
What is the difference between scala's Execution Context and play's Execution Context

What is the difference between scala's Execution Context and play's Execution Context


By : César Caldeira
Date : March 29 2020, 07:55 AM
it should still fix some issue
scala.concurrent.ExecutionContext.Implicits.global (Scala std lib execution context) is the execution context provided by standard scala library. It is a special ForkJoinPool that using the blocking method to handle potentially blocking code in order to spawn new threads in the pool. You should not use this inside a play application as play will not have any control over it. Where as play.api.libs.concurrent.Execution.Implicits.defaultContext (Play execution context) uses actor dispatcher. This is what should be used for play applications. Also it is good practice to offload blocking calls to different execution context other than play execution context. This way it will avoid play app running into starvation state.
code :
 val appOrNull: Application = Play._currentApp
 appOrNull match {
  case null => common
  case app: Application => app.actorSystem.dispatcher
 }

 private val common = ExecutionContext.fromExecutor(new ForkJoinPool())
val executor: Executor = es match {
    case null => createExecutorService
    case some => some
  }
  def createExecutorService: ExecutorService = {

    def getInt(name: String, default: String) = (try System.getProperty(name, default) catch {
      case e: SecurityException => default
    }) match {
      case s if s.charAt(0) == 'x' => (Runtime.getRuntime.availableProcessors * s.substring(1).toDouble).ceil.toInt
      case other => other.toInt
    }

    def range(floor: Int, desired: Int, ceiling: Int) = scala.math.min(scala.math.max(floor, desired), ceiling)

    val desiredParallelism = range(
      getInt("scala.concurrent.context.minThreads", "1"),
      getInt("scala.concurrent.context.numThreads", "x1"),
      getInt("scala.concurrent.context.maxThreads", "x1"))

    val threadFactory = new DefaultThreadFactory(daemonic = true)

    try {
      new ForkJoinPool(
        desiredParallelism,
        threadFactory,
        uncaughtExceptionHandler,
        true) // Async all the way baby
    } catch {
      case NonFatal(t) =>
        System.err.println("Failed to create ForkJoinPool for the default ExecutionContext, falling back to ThreadPoolExecutor")
        t.printStackTrace(System.err)
        val exec = new ThreadPoolExecutor(
          desiredParallelism,
          desiredParallelism,
          5L,
          TimeUnit.MINUTES,
          new LinkedBlockingQueue[Runnable],
          threadFactory
        )
        exec.allowCoreThreadTimeOut(true)
        exec
    }
  }
// Implement BlockContext on FJP threads
  class DefaultThreadFactory(daemonic: Boolean) extends ThreadFactory with ForkJoinPool.ForkJoinWorkerThreadFactory {
    def wire[T <: Thread](thread: T): T = {
      thread.setDaemon(daemonic)
      thread.setUncaughtExceptionHandler(uncaughtExceptionHandler)
      thread
    }

    def newThread(runnable: Runnable): Thread = wire(new Thread(runnable))

    def newThread(fjp: ForkJoinPool): ForkJoinWorkerThread = wire(new ForkJoinWorkerThread(fjp) with BlockContext {
      override def blockOn[T](thunk: =>T)(implicit permission: CanAwait): T = {
        var result: T = null.asInstanceOf[T]
        ForkJoinPool.managedBlock(new ForkJoinPool.ManagedBlocker {
          @volatile var isdone = false
          override def block(): Boolean = {
            result = try thunk finally { isdone = true }
            true
          }
          override def isReleasable = isdone
        })
        result
      }
    })
  }
Did Javascript execution context always have two phases (creation and execution)?

Did Javascript execution context always have two phases (creation and execution)?


By : Mike Caro
Date : March 29 2020, 07:55 AM
wish of those help In general, everything has to be created before it can be used.
And yes, this has been the behaviour of JavaScript since the first standard edition.
Will the input() function execution context be inside the check() function execution context?

Will the input() function execution context be inside the check() function execution context?


By : user2285681
Date : March 29 2020, 07:55 AM
Hope this helps It's not "inside". Execution contexts are one on top of the other on a stack.
You have the Global Execution Context at the bottom. When you call check(), its execution context is pushed on top of the stack.
code :
check()
-------
Global
input()
-------
check()
-------
Global
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