net.openhft.chronicle.threads

Class MediumEventLoop

java.lang.Object

net.openhft.chronicle.core.io.AbstractCloseable

net.openhft.chronicle.threads.AbstractLifecycleEventLoop

net.openhft.chronicle.threads.MediumEventLoop

All Implemented Interfaces:

Closeable, AutoCloseable, Runnable, net.openhft.chronicle.core.io.ManagedCloseable, net.openhft.chronicle.core.io.Monitorable, net.openhft.chronicle.core.io.QueryCloseable, net.openhft.chronicle.core.io.ReferenceOwner, net.openhft.chronicle.core.io.SingleThreadedChecked, net.openhft.chronicle.core.threads.EventLoop, CoreEventLoop

Direct Known Subclasses:

VanillaEventLoop

public class MediumEventLoop
extends AbstractLifecycleEventLoop
implements CoreEventLoop, Runnable, net.openhft.chronicle.core.io.Closeable

Field Summary

Fields

Modifier and Type	Field and Description
static Set<net.openhft.chronicle.core.threads.HandlerPriority>	ALLOWED_PRIORITIES
protected boolean	daemon
protected net.openhft.chronicle.core.threads.EventHandler	highHandler
protected long	loopStartNS
protected List<net.openhft.chronicle.core.threads.EventHandler>	mediumHandlers
protected @NotNull net.openhft.chronicle.core.threads.EventHandler[]	mediumHandlersArray
protected ConcurrentLinkedQueue<net.openhft.chronicle.core.threads.EventHandler>	newHandlers
static int	NO_CPU
protected static net.openhft.chronicle.core.threads.EventHandler[]	NO_EVENT_HANDLERS
protected @Nullable net.openhft.chronicle.core.threads.EventLoop	parent
protected Pauser	pauser
protected @NotNull ExecutorService	service
protected @Nullable Thread	thread

Fields inherited from class net.openhft.chronicle.threads.AbstractLifecycleEventLoop

name

Fields inherited from class net.openhft.chronicle.core.io.AbstractCloseable

closedHere, DISABLE_DISCARD_WARNING, WARN_NS

Fields inherited from interface net.openhft.chronicle.threads.CoreEventLoop

NOT_IN_A_LOOP

Fields inherited from interface net.openhft.chronicle.core.threads.EventLoop

DEBUG_ADDING_HANDLERS

Fields inherited from interface net.openhft.chronicle.core.io.ReferenceOwner

INIT, TMP

Fields inherited from interface net.openhft.chronicle.core.io.SingleThreadedChecked

DISABLE_SINGLE_THREADED_CHECK

Constructor Summary

Constructors

Constructor and Description
MediumEventLoop(@Nullable net.openhft.chronicle.core.threads.EventLoop parent, String name, Pauser pauser, boolean daemon, String binding)

Method Summary

Modifier and Type	Method and Description
void	addHandler(@NotNull net.openhft.chronicle.core.threads.EventHandler handler)
protected void	addHandlerInternal(@NotNull net.openhft.chronicle.core.threads.EventHandler handler) Add a handler in the appropriate way given the thread adding the handler and the state of the loop
protected void	addNewHandler(@NotNull net.openhft.chronicle.core.threads.EventHandler handler)
static void	closeAll(@NotNull List<net.openhft.chronicle.core.threads.EventHandler> handlers)
protected void	closeAllHandlers()
void	dumpRunningHandlers()
void	dumpRunningState(@NotNull String message, @NotNull BooleanSupplier finalCheck)
protected boolean	handle(net.openhft.chronicle.core.threads.EventLoop eventLoop, net.openhft.chronicle.core.threads.EventHandler handler, Throwable t)
int	handlerCount()
boolean	isAlive()
protected void	loopFinishedAllHandlers()
protected void	loopStartedAllHandlers()
long	loopStartNS() Get the System.nanoTime() at which the currently executing loop iteration started
int	nonDaemonHandlerCount()
protected void	performClose()
protected void	performStart() Implement whatever this event loop needs to start, will only ever be called once
protected void	performStopFromNew() Implement a stop from EventLoopLifecycle.NEW state, should block until all handlers have had EventHandler.loopFinished() called.
protected void	performStopFromStarted() Implement a stop from EventLoopLifecycle.STARTED state, should block until all handlers have completed their final iteration and had EventHandler.loopFinished() called.
protected static void	removeHandler(net.openhft.chronicle.core.threads.EventHandler handler, @NotNull List<net.openhft.chronicle.core.threads.EventHandler> handlers)
void	run()
protected boolean	runAllHandlers()
protected void	runDaemonHandlers()
boolean	runsInsideCoreLoop()
protected void	runTimerHandlers()
@Nullable Thread	thread()
protected long	timerIntervalMS()
@NotNull String	toString()
void	unpause()
protected boolean	updateHighHandler(@NotNull net.openhft.chronicle.core.threads.EventHandler handler) This check/assignment needs to be atomic
protected void	updateMediumHandlersArray() This copy needs to be atomic

Methods inherited from class net.openhft.chronicle.threads.AbstractLifecycleEventLoop

awaitTermination, isStarted, isStopped, name, nameWithSlash, start, stop

Methods inherited from class net.openhft.chronicle.core.io.AbstractCloseable

assertCloseable, assertCloseablesClosed, close, createdHere, disableCloseableTracing, enableCloseableTracing, gcAndWaitForCloseablesToClose, isClosed, isClosing, isInUserThread, referenceId, shouldPerformCloseInBackground, shouldWaitForClosed, singleThreadedCheckDisabled, singleThreadedCheckDisabled, singleThreadedCheckReset, threadSafetyCheck, throwExceptionIfClosed, throwExceptionIfClosedInSetter, unmonitor, unmonitor, waitForCloseablesToClose, waitForClosed, warnAndCloseIfNotClosed

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.openhft.chronicle.core.threads.EventLoop

close, inEventLoop, isStopped, name, start, stop

Methods inherited from interface net.openhft.chronicle.core.io.Closeable

closeQuietly, closeQuietly

Methods inherited from interface net.openhft.chronicle.core.io.QueryCloseable

isClosed, isClosing

Methods inherited from interface net.openhft.chronicle.core.io.ReferenceOwner

referenceName, temporary

Methods inherited from interface net.openhft.chronicle.core.io.Monitorable

unmonitor

Field Detail

ALLOWED_PRIORITIES

public static final Set<net.openhft.chronicle.core.threads.HandlerPriority> ALLOWED_PRIORITIES

NO_CPU

public static final int NO_CPU

See Also:

Constant Field Values

NO_EVENT_HANDLERS

protected static final net.openhft.chronicle.core.threads.EventHandler[] NO_EVENT_HANDLERS

parent

@Nullable
protected final transient @Nullable net.openhft.chronicle.core.threads.EventLoop parent

service

@NotNull
protected final transient @NotNull ExecutorService service

mediumHandlers

protected final List<net.openhft.chronicle.core.threads.EventHandler> mediumHandlers

newHandlers

protected final ConcurrentLinkedQueue<net.openhft.chronicle.core.threads.EventHandler> newHandlers

pauser

protected final Pauser pauser

daemon

protected final boolean daemon

mediumHandlersArray

@NotNull
protected @NotNull net.openhft.chronicle.core.threads.EventHandler[] mediumHandlersArray

highHandler

protected net.openhft.chronicle.core.threads.EventHandler highHandler

loopStartNS

protected volatile long loopStartNS

thread

@Nullable
protected volatile @Nullable Thread thread

Constructor Detail

MediumEventLoop

public MediumEventLoop(@Nullable
                       @Nullable net.openhft.chronicle.core.threads.EventLoop parent,
                       String name,
                       Pauser pauser,
                       boolean daemon,
                       String binding)

Parameters:

parent - the parent event loop

name - the name of this event handler

pauser - the pause strategy

daemon - is a demon thread

binding - set affinity description, "any", "none", "1", "last-1"

Method Detail

closeAll

public static void closeAll(@NotNull
                            @NotNull List<net.openhft.chronicle.core.threads.EventHandler> handlers)

removeHandler

protected static void removeHandler(net.openhft.chronicle.core.threads.EventHandler handler,
                                    @NotNull
                                    @NotNull List<net.openhft.chronicle.core.threads.EventHandler> handlers)

thread

@Nullable
public @Nullable Thread thread()

Specified by:

thread in interface CoreEventLoop

Returns:

thread that the event loop is running on. Will be null if the event loop has not started

toString

@NotNull
public @NotNull String toString()

Overrides:

toString in class net.openhft.chronicle.core.io.AbstractCloseable

performStart

protected void performStart()

Description copied from class: AbstractLifecycleEventLoop

Implement whatever this event loop needs to start, will only ever be called once

Specified by:

performStart in class AbstractLifecycleEventLoop

unpause

public void unpause()

Specified by:

unpause in interface net.openhft.chronicle.core.threads.EventLoop

performStopFromNew

protected void performStopFromNew()

Description copied from class: AbstractLifecycleEventLoop

Implement a stop from EventLoopLifecycle.NEW state, should block until all handlers have had EventHandler.loopFinished() called.

Specified by:

performStopFromNew in class AbstractLifecycleEventLoop

performStopFromStarted

protected void performStopFromStarted()

Description copied from class: AbstractLifecycleEventLoop

Implement a stop from EventLoopLifecycle.STARTED state, should block until all handlers have completed their final iteration and had EventHandler.loopFinished() called.

Specified by:

performStopFromStarted in class AbstractLifecycleEventLoop

addHandler

public void addHandler(@NotNull
                       @NotNull net.openhft.chronicle.core.threads.EventHandler handler)

Specified by:

addHandler in interface net.openhft.chronicle.core.threads.EventLoop

addHandlerInternal

protected void addHandlerInternal(@NotNull
                                  @NotNull net.openhft.chronicle.core.threads.EventHandler handler)

Add a handler in the appropriate way given the thread adding the handler and the state of the loop

loopStartNS

public long loopStartNS()

Description copied from interface: CoreEventLoop

Get the System.nanoTime() at which the currently executing loop iteration started

Specified by:

loopStartNS in interface CoreEventLoop

Returns:

The time the current loop started, or CoreEventLoop.NOT_IN_A_LOOP if no iteration is executing

run

public void run()

Specified by:

run in interface Runnable

loopStartedAllHandlers

protected void loopStartedAllHandlers()

loopFinishedAllHandlers

protected void loopFinishedAllHandlers()

timerIntervalMS

protected long timerIntervalMS()

runTimerHandlers

protected void runTimerHandlers()

runDaemonHandlers

protected void runDaemonHandlers()

runAllHandlers

protected boolean runAllHandlers()

handle

protected boolean handle(net.openhft.chronicle.core.threads.EventLoop eventLoop,
                         net.openhft.chronicle.core.threads.EventHandler handler,
                         Throwable t)

updateMediumHandlersArray

protected void updateMediumHandlersArray()

This copy needs to be atomic

Chronicle-Threads/issues/106

addNewHandler

protected void addNewHandler(@NotNull
                             @NotNull net.openhft.chronicle.core.threads.EventHandler handler)

updateHighHandler

protected boolean updateHighHandler(@NotNull
                                    @NotNull net.openhft.chronicle.core.threads.EventHandler handler)

This check/assignment needs to be atomic

dumpRunningState

public void dumpRunningState(@NotNull
                             @NotNull String message,
                             @NotNull
                             @NotNull BooleanSupplier finalCheck)

Specified by:

dumpRunningState in interface CoreEventLoop

nonDaemonHandlerCount

public int nonDaemonHandlerCount()

handlerCount

public int handlerCount()

closeAllHandlers

protected void closeAllHandlers()

dumpRunningHandlers

public void dumpRunningHandlers()

isAlive

public boolean isAlive()

Specified by:

isAlive in interface net.openhft.chronicle.core.threads.EventLoop

performClose

protected void performClose()

Overrides:

performClose in class AbstractLifecycleEventLoop

runsInsideCoreLoop

public boolean runsInsideCoreLoop()

Specified by:

runsInsideCoreLoop in interface net.openhft.chronicle.core.threads.EventLoop