PrioritySchedulerStatisticTracker (threadly 5.35 API)

java.lang.Object
- org.threadly.concurrent.AbstractSubmitterExecutor
- - org.threadly.concurrent.AbstractSubmitterScheduler
  - - org.threadly.concurrent.AbstractPriorityScheduler
    - - org.threadly.concurrent.PriorityScheduler
      - org.threadly.concurrent.statistics.PrioritySchedulerStatisticTracker

All Implemented Interfaces:

java.util.concurrent.Executor, PrioritySchedulerService, SchedulerService, StatisticExecutor, StatisticPriorityScheduler, SubmitterExecutor, SubmitterScheduler
```
public class PrioritySchedulerStatisticTracker
extends PriorityScheduler
implements StatisticPriorityScheduler
```
An implementation of PriorityScheduler which tracks run and usage statistics. This is designed for testing and troubleshooting. It has a little more overhead from the normal PriorityScheduler.
It helps give insight in how long tasks are running, how well the thread pool is being utilized, as well as execution frequency.

Since:

4.5.0 (since 1.0.0 at org.threadly.concurrent)

Constructor Summary

Constructors
Constructor and Description
`PrioritySchedulerStatisticTracker(int poolSize)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, boolean useDaemonThreads)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, boolean useDaemonThreads, int maxStatisticWindowSize)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, boolean useDaemonThreads, int maxStatisticWindowSize, boolean accurateTime)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, int maxStatisticWindowSize)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, int maxStatisticWindowSize, boolean accurateTime)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs, boolean useDaemonThreads)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs, boolean useDaemonThreads, int maxStatisticWindowSize)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs, boolean useDaemonThreads, int maxStatisticWindowSize, boolean accurateTime)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs, int maxStatisticWindowSize)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs, int maxStatisticWindowSize, boolean accurateTime)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs, java.util.concurrent.ThreadFactory threadFactory)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs, java.util.concurrent.ThreadFactory threadFactory, int maxStatisticWindowSize)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.
`PrioritySchedulerStatisticTracker(int poolSize, TaskPriority defaultPriority, long maxWaitForLowPriorityInMs, java.util.concurrent.ThreadFactory threadFactory, int maxStatisticWindowSize, boolean accurateTime)` Constructs a new thread pool, though no threads will be started till it accepts it's first request.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`double`	`getAverageExecutionDelay()` This reports the rolling average delay from when a task was expected to run, till when the executor actually started the task.
`double`	`getAverageExecutionDelay(TaskPriority priority)` Gets the average delay from when the task is ready, to when it is actually executed.
`double`	`getAverageExecutionDuration()` Get the average duration that tasks submitted through this executor have spent executing.
`double`	`getAverageExecutionDuration(TaskPriority priority)` Get the average duration that tasks submitted through this executor have spent executing.
`java.util.Map<java.lang.Double,java.lang.Long>`	`getExecutionDelayPercentiles(double... percentiles)` Gets percentile values for execution delays.
`java.util.Map<java.lang.Double,java.lang.Long>`	`getExecutionDelayPercentiles(TaskPriority priority, double... percentiles)` Gets percentile values for execution delays.
`java.util.List<java.lang.Long>`	`getExecutionDelaySamples()` Get raw sample data for task execution delays.
`java.util.List<java.lang.Long>`	`getExecutionDelaySamples(TaskPriority priority)` Call to get a list of all currently recorded times for execution delays.
`java.util.Map<java.lang.Double,java.lang.Long>`	`getExecutionDurationPercentiles(double... percentiles)` Gets percentile values for execution duration.
`java.util.Map<java.lang.Double,java.lang.Long>`	`getExecutionDurationPercentiles(TaskPriority priority, double... percentiles)` Gets percentile values for execution duration.
`java.util.List<java.lang.Long>`	`getExecutionDurationSamples()` Get raw sample data for task run durations.
`java.util.List<java.lang.Long>`	`getExecutionDurationSamples(TaskPriority priority)` Get raw sample data for task run durations.
`java.util.List<Pair<java.lang.Runnable,java.lang.StackTraceElement[]>>`	`getLongRunningTasks(long durationLimitMillis)` Call to get a list of runnables and stack traces from tasks which have been actively executing for a longer duration than the one provided.
`int`	`getLongRunningTasksQty(long durationLimitMillis)` Call to return the number of tasks which have been running longer than the provided duration in milliseconds.
`long`	`getTotalExecutionCount()` Call to get the total quantity of tasks this executor has handled.
`long`	`getTotalExecutionCount(TaskPriority priority)` Call to get the total quantity of tasks this executor has handled for a specific priority.
`void`	`resetCollectedStats()` Clears all collected rolling statistics.
`void`	`scheduleAtFixedRate(java.lang.Runnable task, long initialDelay, long period, TaskPriority priority)` Schedule a fixed rate recurring task to run.
`void`	`scheduleWithFixedDelay(java.lang.Runnable task, long initialDelay, long recurringDelay, TaskPriority priority)` Schedule a fixed delay recurring task to run.
`java.util.List<java.lang.Runnable>`	`shutdownNow()` Stops any new tasks from being able to be executed and removes workers from the pool.

Methods inherited from class org.threadly.concurrent.PriorityScheduler
adjustPoolSize, awaitTermination, awaitTermination, getActiveTaskCount, getCurrentPoolSize, getMaxPoolSize, getQueuedTaskCount, getQueuedTaskCount, isShutdown, prestartAllThreads, setPoolSize, shutdown

Methods inherited from class org.threadly.concurrent.AbstractPriorityScheduler
execute, getDefaultPriority, getMaxWaitForLowPriority, getWaitingForExecutionTaskCount, getWaitingForExecutionTaskCount, remove, remove, schedule, scheduleAtFixedRate, scheduleWithFixedDelay, setMaxWaitForLowPriority, submit, submit, submitScheduled, submitScheduled

Methods inherited from class org.threadly.concurrent.AbstractSubmitterScheduler
schedule, submitScheduled, submitScheduled

Methods inherited from class org.threadly.concurrent.AbstractSubmitterExecutor
execute, submit, submit

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.threadly.concurrent.statistics.StatisticExecutor
getQueuedTaskCount

Methods inherited from interface org.threadly.concurrent.PrioritySchedulerService
execute, getDefaultPriority, getMaxWaitForLowPriority, getQueuedTaskCount, getWaitingForExecutionTaskCount, schedule, submit, submit, submit, submitScheduled, submitScheduled, submitScheduled

Methods inherited from interface org.threadly.concurrent.SchedulerService
getActiveTaskCount, getQueuedTaskCount, getWaitingForExecutionTaskCount, isShutdown, remove, remove

Methods inherited from interface org.threadly.concurrent.SubmitterScheduler
schedule, scheduleAtFixedRate, scheduleWithFixedDelay, submitScheduled, submitScheduled, submitScheduled

Methods inherited from interface org.threadly.concurrent.SubmitterExecutor
submit, submit, submit

Methods inherited from interface java.util.concurrent.Executor
execute

- Constructor Detail
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This constructs a default priority of high (which makes sense for most use cases). It also defaults low priority worker wait as 500ms. It also defaults to all newly created threads being daemon threads.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         boolean useDaemonThreads)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This constructs a default priority of high (which makes sense for most use cases). It also defaults low priority worker wait as 500ms.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    useDaemonThreads - true if newly created threads should be daemon
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs,
                                         boolean useDaemonThreads)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
    
    useDaemonThreads - true if newly created threads should be daemon
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs,
                                         java.util.concurrent.ThreadFactory threadFactory)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
    
    threadFactory - thread factory for producing new threads within executor
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         int maxStatisticWindowSize)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This constructs a default priority of high (which makes sense for most use cases). It also defaults low priority worker wait as 500ms. It also defaults to all newly created threads being daemon threads.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    maxStatisticWindowSize - maximum number of samples to keep internally
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         boolean useDaemonThreads,
                                         int maxStatisticWindowSize)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This constructs a default priority of high (which makes sense for most use cases). It also defaults low priority worker wait as 500ms.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    useDaemonThreads - true if newly created threads should be daemon
    
    maxStatisticWindowSize - maximum number of samples to keep internally
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs,
                                         int maxStatisticWindowSize)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
    
    maxStatisticWindowSize - maximum number of samples to keep internally
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs,
                                         boolean useDaemonThreads,
                                         int maxStatisticWindowSize)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
    
    useDaemonThreads - true if newly created threads should be daemon
    
    maxStatisticWindowSize - maximum number of samples to keep internally
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs,
                                         java.util.concurrent.ThreadFactory threadFactory,
                                         int maxStatisticWindowSize)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    This defaults to inaccurate time. Meaning that durations and delays may under report (but NEVER OVER what they actually were). This has the least performance impact. If you want more accurate time consider using one of the constructors that accepts a boolean for accurate time.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
    
    threadFactory - thread factory for producing new threads within executor
    
    maxStatisticWindowSize - maximum number of samples to keep internally
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         int maxStatisticWindowSize,
                                         boolean accurateTime)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This constructs a default priority of high (which makes sense for most use cases). It also defaults low priority worker wait as 500ms. It also defaults to all newly created threads being daemon threads.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    maxStatisticWindowSize - maximum number of samples to keep internally
    
    accurateTime - true to ensure that delays and durations are not under reported
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         boolean useDaemonThreads,
                                         int maxStatisticWindowSize,
                                         boolean accurateTime)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This constructs a default priority of high (which makes sense for most use cases). It also defaults low priority worker wait as 500ms.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    useDaemonThreads - true if newly created threads should be daemon
    
    maxStatisticWindowSize - maximum number of samples to keep internally
    
    accurateTime - true to ensure that delays and durations are not under reported
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs,
                                         int maxStatisticWindowSize,
                                         boolean accurateTime)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
    
    maxStatisticWindowSize - maximum number of samples to keep internally
    
    accurateTime - true to ensure that delays and durations are not under reported
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs,
                                         boolean useDaemonThreads,
                                         int maxStatisticWindowSize,
                                         boolean accurateTime)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
    
    useDaemonThreads - true if newly created threads should be daemon
    
    maxStatisticWindowSize - maximum number of samples to keep internally
    
    accurateTime - true to ensure that delays and durations are not under reported
  - PrioritySchedulerStatisticTracker
```
public PrioritySchedulerStatisticTracker(int poolSize,
                                         TaskPriority defaultPriority,
                                         long maxWaitForLowPriorityInMs,
                                         java.util.concurrent.ThreadFactory threadFactory,
                                         int maxStatisticWindowSize,
                                         boolean accurateTime)
```
    Constructs a new thread pool, though no threads will be started till it accepts it's first request. This provides the extra parameters to tune what tasks submitted without a priority will be scheduled as. As well as the maximum wait for low priority tasks. The longer low priority tasks wait for a worker, the less chance they will have to create a thread. But it also makes low priority tasks execution time less predictable.
    
    Parameters:
    
    poolSize - Thread pool size that should be maintained
    
    defaultPriority - priority to give tasks which do not specify it
    
    maxWaitForLowPriorityInMs - time low priority tasks wait for a worker
    
    threadFactory - thread factory for producing new threads within executor
    
    maxStatisticWindowSize - maximum number of samples to keep internally
    
    accurateTime - true to ensure that delays and durations are not under reported
- Method Detail
  - shutdownNow
```
public java.util.List<java.lang.Runnable> shutdownNow()
```
    Description copied from class: PriorityScheduler
    
    Stops any new tasks from being able to be executed and removes workers from the pool.
    This implementation refuses new submissions after this call. And will NOT interrupt any tasks which are currently running. However any tasks which are waiting in queue to be run (but have not started yet), will not be run. Those waiting tasks will be removed, and as workers finish with their current tasks the threads will be joined.
    
    Overrides:
    
    shutdownNow in class PriorityScheduler
    
    Returns:
    
    List of runnables which were waiting to execute
  - scheduleWithFixedDelay
```
public void scheduleWithFixedDelay(java.lang.Runnable task,
                                   long initialDelay,
                                   long recurringDelay,
                                   TaskPriority priority)
```
    Description copied from interface: PrioritySchedulerService
    
    Schedule a fixed delay recurring task to run. The recurring delay time will be from the point where execution has finished. So the execution frequency is the recurringDelay + runtime for the provided task.
    Unlike ScheduledExecutorService if the task throws an exception, subsequent executions are NOT suppressed or prevented. So if the task throws an exception on every run, the task will continue to be executed at the provided recurring delay (possibly throwing an exception on each execution).
    
    Specified by:
    
    scheduleWithFixedDelay in interface PrioritySchedulerService
    
    Overrides:
    
    scheduleWithFixedDelay in class PriorityScheduler
    
    Parameters:
    
    task - runnable to be executed
    
    initialDelay - delay in milliseconds until first run
    
    recurringDelay - delay in milliseconds for running task after last finish
    
    priority - priority for task to get available thread to run on
  - scheduleAtFixedRate
```
public void scheduleAtFixedRate(java.lang.Runnable task,
                                long initialDelay,
                                long period,
                                TaskPriority priority)
```
    Description copied from interface: PrioritySchedulerService
    
    Schedule a fixed rate recurring task to run. The recurring delay will be the same, regardless of how long task execution takes. A given runnable will not run concurrently (unless it is submitted to the scheduler multiple times). Instead of execution takes longer than the period, the next run will occur immediately (given thread availability in the pool).
    Unlike ScheduledExecutorService if the task throws an exception, subsequent executions are NOT suppressed or prevented. So if the task throws an exception on every run, the task will continue to be executed at the provided recurring delay (possibly throwing an exception on each execution).
    
    Specified by:
    
    scheduleAtFixedRate in interface PrioritySchedulerService
    
    Overrides:
    
    scheduleAtFixedRate in class PriorityScheduler
    
    Parameters:
    
    task - runnable to be executed
    
    initialDelay - delay in milliseconds until first run
    
    period - amount of time in milliseconds between the start of recurring executions
    
    priority - priority for task to get available thread to run on
  - getExecutionDelaySamples
```
public java.util.List<java.lang.Long> getExecutionDelaySamples()
```
    Description copied from interface: StatisticPriorityScheduler
    
    Get raw sample data for task execution delays. This raw data can be used for more advanced statistics which are not provided in this library. These can also be fed into utilities in StatisticsUtils for additional statistics.
    The returned result set includes all priorities. If you want durations for a specific priority use StatisticPriorityScheduler.getExecutionDelaySamples(TaskPriority).
    
    Specified by:
    
    getExecutionDelaySamples in interface StatisticExecutor
    
    Specified by:
    
    getExecutionDelaySamples in interface StatisticPriorityScheduler
    
    Returns:
    
    A list of delay times in milliseconds before a task was executed
  - getExecutionDelaySamples
```
public java.util.List<java.lang.Long> getExecutionDelaySamples(TaskPriority priority)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Call to get a list of all currently recorded times for execution delays. This is the window used for the rolling average for StatisticPriorityScheduler.getAverageExecutionDelay(TaskPriority). This call allows for more complex statistics (ie looking for outliers, etc).
    
    Specified by:
    
    getExecutionDelaySamples in interface StatisticPriorityScheduler
    
    Parameters:
    
    priority - Task priority to provide samples for
    
    Returns:
    
    list which represents execution delay samples
  - getAverageExecutionDelay
```
public double getAverageExecutionDelay()
```
    Description copied from interface: StatisticPriorityScheduler
    
    This reports the rolling average delay from when a task was expected to run, till when the executor actually started the task. This will return -1 if no samples have been collected yet. This call averages over all priority types, if you want the delay for a specific priority use StatisticPriorityScheduler.getAverageExecutionDelay(TaskPriority).
    
    Specified by:
    
    getAverageExecutionDelay in interface StatisticExecutor
    
    Specified by:
    
    getAverageExecutionDelay in interface StatisticPriorityScheduler
    
    Returns:
    
    Average delay for tasks to be executed in milliseconds
  - getAverageExecutionDelay
```
public double getAverageExecutionDelay(TaskPriority priority)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Gets the average delay from when the task is ready, to when it is actually executed. This will only inspect the times for a specific priority.
    
    Specified by:
    
    getAverageExecutionDelay in interface StatisticPriorityScheduler
    
    Parameters:
    
    priority - Specific task priority which statistics should be calculated against
    
    Returns:
    
    Average delay for tasks to be executed in milliseconds
  - getExecutionDelayPercentiles
```
public java.util.Map<java.lang.Double,java.lang.Long> getExecutionDelayPercentiles(double... percentiles)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Gets percentile values for execution delays. This function accepts any decimal percentile between zero and one hundred.
    The returned map's keys correspond exactly to the percentiles provided. Iterating over the returned map will iterate in order of the requested percentiles as well.
    These percentiles are across all priorities combined into the same data set. If you want percentiles for a specific priority use StatisticPriorityScheduler.getExecutionDelayPercentiles(TaskPriority, double...).
    
    Specified by:
    
    getExecutionDelayPercentiles in interface StatisticExecutor
    
    Specified by:
    
    getExecutionDelayPercentiles in interface StatisticPriorityScheduler
    
    Parameters:
    
    percentiles - Percentiles requested, any decimal values between 0 and 100 (inclusive)
    
    Returns:
    
    Map with keys being the percentiles requested, value being the execution delay in milliseconds
  - getExecutionDelayPercentiles
```
public java.util.Map<java.lang.Double,java.lang.Long> getExecutionDelayPercentiles(TaskPriority priority,
                                                                                   double... percentiles)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Gets percentile values for execution delays. This function accepts any decimal percentile between zero and one hundred.
    The returned map's keys correspond exactly to the percentiles provided. Iterating over the returned map will iterate in order of the requested percentiles as well.
    
    Specified by:
    
    getExecutionDelayPercentiles in interface StatisticPriorityScheduler
    
    Parameters:
    
    priority - Specific task priority which statistics should be calculated against
    
    percentiles - Percentiles requested, any decimal values between 0 and 100 (inclusive)
    
    Returns:
    
    Map with keys being the percentiles requested, value being the execution delay in milliseconds
  - getExecutionDurationSamples
```
public java.util.List<java.lang.Long> getExecutionDurationSamples()
```
    Description copied from interface: StatisticPriorityScheduler
    
    Get raw sample data for task run durations. This raw data can be used for more advanced statistics which are not provided in this library. These can also be fed into utilities in StatisticsUtils for additional statistics.
    The returned result set includes all priorities. If you want durations for a specific priority use StatisticPriorityScheduler.getExecutionDurationSamples(TaskPriority).
    
    Specified by:
    
    getExecutionDurationSamples in interface StatisticExecutor
    
    Specified by:
    
    getExecutionDurationSamples in interface StatisticPriorityScheduler
    
    Returns:
    
    A list of task durations in milliseconds
  - getExecutionDurationSamples
```
public java.util.List<java.lang.Long> getExecutionDurationSamples(TaskPriority priority)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Get raw sample data for task run durations. This raw data can be used for more advanced statistics which are not provided in this library. These can also be fed into utilities in StatisticsUtils for additional statistics.
    These result set includes all priorities. If you want durations for a specific priority use StatisticPriorityScheduler.getExecutionDurationSamples(TaskPriority).
    
    Specified by:
    
    getExecutionDurationSamples in interface StatisticPriorityScheduler
    
    Parameters:
    
    priority - Task priority to provide samples for
    
    Returns:
    
    A list of task durations in milliseconds
  - getAverageExecutionDuration
```
public double getAverageExecutionDuration()
```
    Description copied from interface: StatisticPriorityScheduler
    
    Get the average duration that tasks submitted through this executor have spent executing. This only reports samples from tasks which have completed (in-progress tasks are not considered).
    This call averages over all priority types, if you want the duration for a specific priority use StatisticPriorityScheduler.getAverageExecutionDuration(TaskPriority).
    
    Specified by:
    
    getAverageExecutionDuration in interface StatisticExecutor
    
    Specified by:
    
    getAverageExecutionDuration in interface StatisticPriorityScheduler
    
    Returns:
    
    Average task execution duration in milliseconds
  - getAverageExecutionDuration
```
public double getAverageExecutionDuration(TaskPriority priority)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Get the average duration that tasks submitted through this executor have spent executing. This only reports samples from tasks which have completed (in-progress tasks are not considered).
    
    Specified by:
    
    getAverageExecutionDuration in interface StatisticPriorityScheduler
    
    Parameters:
    
    priority - Specific task priority which statistics should be calculated against
    
    Returns:
    
    Average task execution duration in milliseconds
  - getExecutionDurationPercentiles
```
public java.util.Map<java.lang.Double,java.lang.Long> getExecutionDurationPercentiles(double... percentiles)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Gets percentile values for execution duration. This function accepts any decimal percentile between zero and one hundred.
    The returned map's keys correspond exactly to the percentiles provided. Iterating over the returned map will iterate in order of the requested percentiles as well.
    These percentiles are across all priorities combined into the same data set. If you want percentiles for a specific priority use StatisticPriorityScheduler.getExecutionDurationPercentiles(TaskPriority, double...).
    
    Specified by:
    
    getExecutionDurationPercentiles in interface StatisticExecutor
    
    Specified by:
    
    getExecutionDurationPercentiles in interface StatisticPriorityScheduler
    
    Parameters:
    
    percentiles - Percentiles requested, any decimal values between 0 and 100 (inclusive)
    
    Returns:
    
    Map with keys being the percentiles requested, value being the execution duration in milliseconds
  - getExecutionDurationPercentiles
```
public java.util.Map<java.lang.Double,java.lang.Long> getExecutionDurationPercentiles(TaskPriority priority,
                                                                                      double... percentiles)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Gets percentile values for execution duration. This function accepts any decimal percentile between zero and one hundred.
    The returned map's keys correspond exactly to the percentiles provided. Iterating over the returned map will iterate in order of the requested percentiles as well.
    
    Specified by:
    
    getExecutionDurationPercentiles in interface StatisticPriorityScheduler
    
    Parameters:
    
    priority - Specific task priority which statistics should be calculated against
    
    percentiles - Percentiles requested, any decimal values between 0 and 100 (inclusive)
    
    Returns:
    
    Map with keys being the percentiles requested, value being the execution duration in milliseconds
  - getLongRunningTasks
```
public java.util.List<Pair<java.lang.Runnable,java.lang.StackTraceElement[]>> getLongRunningTasks(long durationLimitMillis)
```
    Description copied from interface: StatisticExecutor
    
    Call to get a list of runnables and stack traces from tasks which have been actively executing for a longer duration than the one provided. Time in queue waiting for execution is not considered as part of the execution duration.
    If only the quantity of long running tasks is needed, please use StatisticExecutor.getLongRunningTasksQty(long). Since it does not need to generate stack traces it is a cheaper alternative.
    The left side of the Pair is the runnable task submitted. If the task was submitted as a Callable the Runnable will be of type: ListenableFutureTask. Casting and invoking ListenableFutureTask.getContainedCallable() will allow you to get to your original Callable.
    The right side of the Pair is a single sample of what that long running tasks stack was. Because these tasks are running concurrently by the time this function returns the provided tasks may have completed.
    
    Specified by:
    
    getLongRunningTasks in interface StatisticExecutor
    
    Parameters:
    
    durationLimitMillis - Limit for tasks execution, if task execution time is below this they will be ignored
    
    Returns:
    
    List of long running runnables with their corresponding stack traces
  - getLongRunningTasksQty
```
public int getLongRunningTasksQty(long durationLimitMillis)
```
    Description copied from interface: StatisticExecutor
    
    Call to return the number of tasks which have been running longer than the provided duration in milliseconds. While iterating over running tasks, it may be possible that some previously examine tasks have completed before this ran. There is no attempt to lock tasks from starting or stopping during this check.
    
    Specified by:
    
    getLongRunningTasksQty in interface StatisticExecutor
    
    Parameters:
    
    durationLimitMillis - threshold of time in milliseconds a task must have been executing
    
    Returns:
    
    total quantity of tasks which have or are running longer than the provided time length
  - resetCollectedStats
```
public void resetCollectedStats()
```
    Description copied from interface: StatisticExecutor
    
    Clears all collected rolling statistics. These are the statistics used for averages and are limited by window sizes.
    This does NOT reset the total execution counts.
    
    Specified by:
    
    resetCollectedStats in interface StatisticExecutor
  - getTotalExecutionCount
```
public long getTotalExecutionCount()
```
    Description copied from interface: StatisticExecutor
    
    Call to get the total quantity of tasks this executor has handled.
    
    Specified by:
    
    getTotalExecutionCount in interface StatisticExecutor
    
    Returns:
    
    total quantity of tasks run
  - getTotalExecutionCount
```
public long getTotalExecutionCount(TaskPriority priority)
```
    Description copied from interface: StatisticPriorityScheduler
    
    Call to get the total quantity of tasks this executor has handled for a specific priority.
    
    Specified by:
    
    getTotalExecutionCount in interface StatisticPriorityScheduler
    
    Parameters:
    
    priority - Specific task priority which statistics should be calculated against
    
    Returns:
    
    total quantity of tasks run

Class PrioritySchedulerStatisticTracker

Constructor Summary

Method Summary

Methods inherited from class org.threadly.concurrent.PriorityScheduler

Methods inherited from class org.threadly.concurrent.AbstractPriorityScheduler

Methods inherited from class org.threadly.concurrent.AbstractSubmitterScheduler

Methods inherited from class org.threadly.concurrent.AbstractSubmitterExecutor

Methods inherited from class java.lang.Object

Methods inherited from interface org.threadly.concurrent.statistics.StatisticExecutor

Methods inherited from interface org.threadly.concurrent.PrioritySchedulerService

Methods inherited from interface org.threadly.concurrent.SchedulerService

Methods inherited from interface org.threadly.concurrent.SubmitterScheduler

Methods inherited from interface org.threadly.concurrent.SubmitterExecutor

Methods inherited from interface java.util.concurrent.Executor

Constructor Detail

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

PrioritySchedulerStatisticTracker

Method Detail

shutdownNow

scheduleWithFixedDelay

scheduleAtFixedRate

getExecutionDelaySamples

getExecutionDelaySamples

getAverageExecutionDelay

getAverageExecutionDelay

getExecutionDelayPercentiles

getExecutionDelayPercentiles

getExecutionDurationSamples

getExecutionDurationSamples

getAverageExecutionDuration

getAverageExecutionDuration

getExecutionDurationPercentiles

getExecutionDurationPercentiles

getLongRunningTasks

getLongRunningTasksQty

resetCollectedStats

getTotalExecutionCount

getTotalExecutionCount