Package delight.nashornsandbox.internal

Class ThreadMonitor

  • public class ThreadMonitor
extends java.lang.Object
    JS executor thread monitor. It is designed to be run in main thread (the JS script is executed in other thread).

    Created on 2015-08-07

    Version:
    $Id$

    • Field Detail

      • maxCPUTime

        private final long maxCPUTime

      • maxMemory

        private final long maxMemory

      • stageOffset

        private final int stageOffset

      • stop

        private final java.util.concurrent.atomic.AtomicBoolean stop

      • scriptFinished

        private final java.util.concurrent.atomic.AtomicBoolean scriptFinished
        Check if interrupted script has finished.

      • scriptKilled

        private final java.util.concurrent.atomic.AtomicBoolean scriptKilled
        Check if script should be killed to stop it when abusive.

      • cpuLimitExceeded

        private final java.util.concurrent.atomic.AtomicBoolean cpuLimitExceeded

      • memoryLimitExceededStage

        private final java.util.concurrent.atomic.AtomicInteger memoryLimitExceededStage

      • monitor

        private final java.lang.Object monitor

      • threadToMonitor

        private java.lang.Thread threadToMonitor

      • timedOutWaitingForThreadToMonitor

        private boolean timedOutWaitingForThreadToMonitor

      • threadBean

        private java.lang.management.ThreadMXBean threadBean

      • memoryCounter

        private final com.sun.management.ThreadMXBean memoryCounter

    • Constructor Detail

      • ThreadMonitor

        public ThreadMonitor​(long maxCPUTime,
                     long maxMemory)

    • Method Detail

      • reset

        private void reset()

      • run

        public void run()

      • getCheckInterval

        private long getCheckInterval​(long runtime)

      • isCpuTimeExided

        private boolean isCpuTimeExided​(long runtime)

      • isStageMemoryExided

        private boolean isStageMemoryExided​(long memory)

      • getCurrentMemory

        private long getCurrentMemory()
                       throws java.lang.InterruptedException
        Obtain current evaluation thread memory usage. it must be empathises that the method 'getThreadAllocatedBytes' is not strictly accurate so mis killing might happen.
        Returns:
        current memory usage
        Throws:
        java.lang.InterruptedException

      • getCPUTime

        private long getCPUTime()

      • stopMonitor

        public void stopMonitor()

      • registerThreadToMonitor

        public boolean registerThreadToMonitor​(java.lang.Thread t)

      • scriptFinished

        public void scriptFinished()

      • isCPULimitExceeded

        public boolean isCPULimitExceeded()

      • isMemoryLimitExceeded

        public boolean isMemoryLimitExceeded()

      • isScriptKilled

        public boolean isScriptKilled()