Package org.quartz.simpl

Class SimpleThreadPool

  • All Implemented Interfaces:
    ThreadPool
    public class SimpleThreadPool
extends java.lang.Object
implements ThreadPool

    This is class is a simple implementation of a thread pool, based on the ThreadPool interface.

    Runnable objects are sent to the pool with the runInThread(Runnable) method, which blocks until a Thread becomes available.

    The pool has a fixed number of Threads, and does not grow or shrink based on demand.

    Author:
    James House, Juergen Donnerstag

    • Constructor Detail

      • SimpleThreadPool

        public SimpleThreadPool​(int threadCount,
                        int threadPriority)

        Create a new SimpleThreadPool with the specified number of Thread s that have the given priority.

        Parameters:
        threadCount - the number of worker Threads in the pool, must be > 0.
        threadPriority - the thread priority for the worker threads.
        See Also:
        Thread

    • Method Detail

      • getLog

        public org.slf4j.Logger getLog()

      • getPoolSize

        public int getPoolSize()
        Description copied from interface: ThreadPool

        Get the current number of threads in the ThreadPool.

        Specified by:
        getPoolSize in interface ThreadPool

      • setThreadCount

        public void setThreadCount​(int count)

        Set the number of worker threads in the pool - has no effect after initialize() has been called.

      • getThreadCount

        public int getThreadCount()

        Get the number of worker threads in the pool.

      • setThreadPriority

        public void setThreadPriority​(int prio)

        Set the thread priority of worker threads in the pool - has no effect after initialize() has been called.

      • getThreadPriority

        public int getThreadPriority()

        Get the thread priority of worker threads in the pool.

      • setThreadNamePrefix

        public void setThreadNamePrefix​(java.lang.String prfx)

      • getThreadNamePrefix

        public java.lang.String getThreadNamePrefix()

      • isThreadsInheritContextClassLoaderOfInitializingThread

        public boolean isThreadsInheritContextClassLoaderOfInitializingThread()
        Returns:
        Returns the threadsInheritContextClassLoaderOfInitializingThread.

      • setThreadsInheritContextClassLoaderOfInitializingThread

        public void setThreadsInheritContextClassLoaderOfInitializingThread​(boolean inheritLoader)
        Parameters:
        inheritLoader - The threadsInheritContextClassLoaderOfInitializingThread to set.

      • isThreadsInheritGroupOfInitializingThread

        public boolean isThreadsInheritGroupOfInitializingThread()

      • setThreadsInheritGroupOfInitializingThread

        public void setThreadsInheritGroupOfInitializingThread​(boolean inheritGroup)

      • isMakeThreadsDaemons

        public boolean isMakeThreadsDaemons()
        Returns:
        Returns the value of makeThreadsDaemons.

      • setMakeThreadsDaemons

        public void setMakeThreadsDaemons​(boolean makeThreadsDaemons)
        Parameters:
        makeThreadsDaemons - The value of makeThreadsDaemons to set.

      • setInstanceId

        public void setInstanceId​(java.lang.String schedInstId)
        Description copied from interface: ThreadPool

        Inform the ThreadPool of the Scheduler instance's Id, prior to initialize being invoked.

        Specified by:
        setInstanceId in interface ThreadPool

      • setInstanceName

        public void setInstanceName​(java.lang.String schedName)
        Description copied from interface: ThreadPool

        Inform the ThreadPool of the Scheduler instance's name, prior to initialize being invoked.

        Specified by:
        setInstanceName in interface ThreadPool

      • createWorkerThreads

        protected java.util.List<org.quartz.simpl.SimpleThreadPool.WorkerThread> createWorkerThreads​(int createCount)

      • shutdown

        public void shutdown()

        Terminate any worker threads in this thread group.

        Jobs currently in progress will complete.

      • shutdown

        public void shutdown​(boolean waitForJobsToComplete)

        Terminate any worker threads in this thread group.

        Jobs currently in progress will complete.

        Specified by:
        shutdown in interface ThreadPool

      • runInThread

        public boolean runInThread​(java.lang.Runnable runnable)

        Run the given Runnable object in the next available Thread. If while waiting the thread pool is asked to shut down, the Runnable is executed immediately within a new additional thread.

        Specified by:
        runInThread in interface ThreadPool
        Parameters:
        runnable - the Runnable to be added.
        Returns:
        true, if the runnable was assigned to run on a Thread.

      • blockForAvailableThreads

        public int blockForAvailableThreads()
        Description copied from interface: ThreadPool

        Determines the number of threads that are currently available in in the pool. Useful for determining the number of times runInThread(Runnable) can be called before returning false.

        The implementation of this method should block until there is at least one available thread.

        Specified by:
        blockForAvailableThreads in interface ThreadPool
        Returns:
        the number of currently available threads

      • makeAvailable

        protected void makeAvailable​(org.quartz.simpl.SimpleThreadPool.WorkerThread wt)

      • clearFromBusyWorkersList

        protected void clearFromBusyWorkersList​(org.quartz.simpl.SimpleThreadPool.WorkerThread wt)