ThreadPoolExecutor.CallerRunsPolicy
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A handler for rejected tasks that runs the rejected task
directly in the calling thread of the execute
method,
unless the executor has been shut down, in which case the task
is discarded.
Public Constructor Summary
Inherited Method Summary
From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this Object .
|
boolean
|
equals( Object obj)
Compares this instance with the specified object and indicates if they
are equal.
|
void
|
finalize()
Invoked when the garbage collector has detected that this instance is no longer reachable.
|
final
Class<?>
|
getClass()
Returns the unique instance of Class that represents this
object's class.
|
int
|
hashCode()
Returns an integer hash code for this object.
|
final
void
|
notify()
Causes a thread which is waiting on this object's monitor (by means of
calling one of the wait() methods) to be woken up.
|
final
void
|
notifyAll()
Causes all threads which are waiting on this object's monitor (by means
of calling one of the wait() methods) to be woken up.
|
String
|
toString()
Returns a string containing a concise, human-readable description of this
object.
|
final
void
|
wait(long timeout, int nanos)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
|
final
void
|
wait(long timeout)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
|
final
void
|
wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
|
Public Constructors
public
CallerRunsPolicy
()
Creates a CallerRunsPolicy
.
Public Methods
Executes task r in the caller's thread, unless the executor
has been shut down, in which case the task is discarded.
Parameters
r |
the runnable task requested to be executed |
e |
the executor attempting to execute this task
|
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Last updated 2024-07-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-07-10 UTC."],[[["\u003cp\u003e\u003ccode\u003eThreadPoolExecutor.CallerRunsPolicy\u003c/code\u003e is a handler for rejected tasks that runs the rejected task directly in the calling thread.\u003c/p\u003e\n"],["\u003cp\u003eIf the executor has been shut down, the task is discarded instead of being executed.\u003c/p\u003e\n"],["\u003cp\u003eIt provides a simple way to handle task rejection by executing the task in the thread that submitted it.\u003c/p\u003e\n"],["\u003cp\u003eThis policy can be useful for throttling the submission rate when the executor is overloaded.\u003c/p\u003e\n"]]],[],null,["# ThreadPoolExecutor.CallerRunsPolicy\n\npublic static class **ThreadPoolExecutor.CallerRunsPolicy** extends [Object](../../../../reference/java/lang/Object.html) \nimplements [RejectedExecutionHandler](../../../../reference/java/util/concurrent/RejectedExecutionHandler.html) \nA handler for rejected tasks that runs the rejected task\ndirectly in the calling thread of the `execute` method,\nunless the executor has been shut down, in which case the task\nis discarded. \n\n### Public Constructor Summary\n\n|---|------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| | [CallerRunsPolicy](../../../../reference/java/util/concurrent/ThreadPoolExecutor.CallerRunsPolicy.html#CallerRunsPolicy())() Creates a `CallerRunsPolicy`. |\n\n### Public Method Summary\n\n|------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| void | [rejectedExecution](../../../../reference/java/util/concurrent/ThreadPoolExecutor.CallerRunsPolicy.html#rejectedExecution(java.lang.Runnable,%20java.util.concurrent.ThreadPoolExecutor))([Runnable](../../../../reference/java/lang/Runnable.html) r, [ThreadPoolExecutor](../../../../reference/java/util/concurrent/ThreadPoolExecutor.html) e) Executes task r in the caller's thread, unless the executor has been shut down, in which case the task is discarded. |\n\n### Inherited Method Summary\n\nFrom class [java.lang.Object](../../../../reference/java/lang/Object.html) \n\n|----------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Object](../../../../reference/java/lang/Object.html) | [clone](../../../../reference/java/lang/Object.html#clone())() Creates and returns a copy of this `Object`. |\n| boolean | [equals](../../../../reference/java/lang/Object.html#equals(java.lang.Object))([Object](../../../../reference/java/lang/Object.html) obj) Compares this instance with the specified object and indicates if they are equal. |\n| void | [finalize](../../../../reference/java/lang/Object.html#finalize())() Invoked when the garbage collector has detected that this instance is no longer reachable. |\n| final [Class](../../../../reference/java/lang/Class.html)\\\u003c?\\\u003e | [getClass](../../../../reference/java/lang/Object.html#getClass())() Returns the unique instance of [Class](../../../../reference/java/lang/Class.html) that represents this object's class. |\n| int | [hashCode](../../../../reference/java/lang/Object.html#hashCode())() Returns an integer hash code for this object. |\n| final void | [notify](../../../../reference/java/lang/Object.html#notify())() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up. |\n| final void | [notifyAll](../../../../reference/java/lang/Object.html#notifyAll())() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up. |\n| [String](../../../../reference/java/lang/String.html) | [toString](../../../../reference/java/lang/Object.html#toString())() Returns a string containing a concise, human-readable description of this object. |\n| final void | [wait](../../../../reference/java/lang/Object.html#wait(long,%20int))(long timeout, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires. |\n| final void | [wait](../../../../reference/java/lang/Object.html#wait(long))(long timeout) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires. |\n| final void | [wait](../../../../reference/java/lang/Object.html#wait())() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object. |\n\nFrom interface [java.util.concurrent.RejectedExecutionHandler](../../../../reference/java/util/concurrent/RejectedExecutionHandler.html) \n\n|---------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| abstract void | [rejectedExecution](../../../../reference/java/util/concurrent/RejectedExecutionHandler.html#rejectedExecution(java.lang.Runnable,%20java.util.concurrent.ThreadPoolExecutor))([Runnable](../../../../reference/java/lang/Runnable.html) r, [ThreadPoolExecutor](../../../../reference/java/util/concurrent/ThreadPoolExecutor.html) executor) Method that may be invoked by a [ThreadPoolExecutor](../../../../reference/java/util/concurrent/ThreadPoolExecutor.html) when [execute](../../../../reference/java/util/concurrent/ThreadPoolExecutor.html#execute(java.lang.Runnable)) cannot accept a task. |\n\nPublic Constructors\n-------------------\n\n#### public\n**CallerRunsPolicy**\n()\n\nCreates a `CallerRunsPolicy`.\n\nPublic Methods\n--------------\n\n#### public void\n**rejectedExecution**\n([Runnable](../../../../reference/java/lang/Runnable.html) r, [ThreadPoolExecutor](../../../../reference/java/util/concurrent/ThreadPoolExecutor.html) e)\n\nExecutes task r in the caller's thread, unless the executor\nhas been shut down, in which case the task is discarded. \n\n##### Parameters\n\n| r | the runnable task requested to be executed |\n| e | the executor attempting to execute this task |\n|---|----------------------------------------------|"]]