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java.lang.Objectorg.jgroups.util.TimeScheduler
public class TimeScheduler
Fixed-delay & fixed-rate single thread scheduler
The scheduler supports varying scheduling intervals by asking the task every time for its next preferred scheduling interval. Scheduling can either be fixed-delay or fixed-rate. The notions are borrowed from java.util.Timer and retain the same meaning. I.e. in fixed-delay scheduling, the task's new schedule is calculated as:
Nested Class Summary | |
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static interface |
TimeScheduler.CancellableTask
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static interface |
TimeScheduler.Task
The interface that submitted tasks must implement |
Field Summary | |
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protected static org.apache.commons.logging.Log |
log
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Constructor Summary | |
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TimeScheduler()
Create a scheduler that executes tasks in dynamically adjustable intervals |
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TimeScheduler(long suspend_interval)
Create a scheduler that executes tasks in dynamically adjustable intervals |
Method Summary | |
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void |
add(TimeScheduler.Task t)
Add a task for execution at adjustable intervals |
void |
add(TimeScheduler.Task t,
boolean relative)
Add a task for execution at adjustable intervals |
java.lang.String |
dumpTaskQueue()
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long |
getSuspendInterval()
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void |
setSuspendInterval(long s)
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int |
size()
Answers the number of tasks currently in the queue. |
void |
start()
Start the scheduler, if it's suspended or stopped |
void |
stop()
Stop the scheduler if it's running. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected static final org.apache.commons.logging.Log log
Constructor Detail |
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public TimeScheduler(long suspend_interval)
suspend_interval
- the time that the scheduler will wait for
at least one task to be placed in the task queue before suspending
the scheduling threadpublic TimeScheduler()
Method Detail |
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public void setSuspendInterval(long s)
public long getSuspendInterval()
public java.lang.String dumpTaskQueue()
public void add(TimeScheduler.Task t, boolean relative)
t
- the task to executerelative
- scheduling scheme:
true:public void add(TimeScheduler.Task t)
t
- the task to executepublic int size()
public void start()
public void stop() throws java.lang.InterruptedException
java.lang.InterruptedException
- if interrupted while waiting for thread
to return
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