com.caoccao.javet.interop.engine

Interface IJavetEnginePool<R extends V8Runtime>

Type Parameters:

R - the type parameter

All Superinterfaces:

java.lang.AutoCloseable, IJavetClosable

All Known Implementing Classes:

JavetEnginePool

public interface IJavetEnginePool<R extends V8Runtime>
extends IJavetClosable

The interface Javet engine pool.

Since:

0.7.0

Method Summary

Modifier and Type	Method and Description
int	getActiveEngineCount() Gets active engine count.
default int	getAverageCallbackContextCount() Gets average callback context count.
default int	getAverageReferenceCount() Gets average reference count.
default V8HeapSpaceStatistics	getAverageV8HeapSpaceStatistics(V8AllocationSpace v8AllocationSpace) Gets average V8 heap space statistics.
default V8HeapStatistics	getAverageV8HeapStatistics() Gets average V8 heap statistics.
default int	getAverageV8ModuleCount() Gets average V8 module count.
JavetEngineConfig	getConfig() Gets config.
IJavetEngine<R>	getEngine() Gets engine.
int	getIdleEngineCount() Gets idle engine count.
int	getReleasedEngineCount() Gets released engine count.
V8SharedMemoryStatistics	getV8SharedMemoryStatistics() Gets V8 shared memory statistics.
boolean	isActive() Is active.
boolean	isQuitting() Is quitting boolean.
int	observe(IV8RuntimeObserver<?>... observers) Traverse the internal V8 runtimes, apply the observer and return the observed V8 runtime count.
void	releaseEngine(IJavetEngine<R> iJavetEngine) Release engine.
void	wakeUpDaemon() Wake up the daemon thread explicitly.

Methods inherited from interface com.caoccao.javet.interfaces.IJavetClosable

close, isClosed

Method Detail

getActiveEngineCount

int getActiveEngineCount()

Gets active engine count.

Returns:

the active engine count

Since:

0.7.0

getAverageCallbackContextCount

default int getAverageCallbackContextCount()

Gets average callback context count.

Returns:

the average callback context count

Since:

1.0.6

getAverageReferenceCount

default int getAverageReferenceCount()

Gets average reference count.

Returns:

the average reference count

Since:

1.0.6

getAverageV8HeapSpaceStatistics

default V8HeapSpaceStatistics getAverageV8HeapSpaceStatistics(V8AllocationSpace v8AllocationSpace)

Gets average V8 heap space statistics.

Parameters:

v8AllocationSpace - the V8 allocation space

Returns:

the average V8 heap space statistics

Since:

1.0.5

getAverageV8HeapStatistics

default V8HeapStatistics getAverageV8HeapStatistics()

Gets average V8 heap statistics.

Returns:

the average V8 heap statistics

Since:

1.0.5

getAverageV8ModuleCount

default int getAverageV8ModuleCount()

Gets average V8 module count.

Returns:

the average V8 module count

getConfig

JavetEngineConfig getConfig()

Gets config.

Returns:

the config

Since:

0.7.0

getEngine

@CheckReturnValue
IJavetEngine<R> getEngine()
                                     throws JavetException

Gets engine.

Returns:

the engine

Throws:

JavetException - the javet exception

Since:

0.7.0

getIdleEngineCount

int getIdleEngineCount()

Gets idle engine count.

Returns:

the idle engine count

Since:

0.7.0

getReleasedEngineCount

int getReleasedEngineCount()

Gets released engine count.

Returns:

the released engine count

Since:

1.0.5

getV8SharedMemoryStatistics

V8SharedMemoryStatistics getV8SharedMemoryStatistics()

Gets V8 shared memory statistics.

Returns:

the V8 shared memory statistics

Since:

1.0.5

isActive

boolean isActive()

Is active.

Returns:

true : active, false: inactive

Since:

0.7.2

isQuitting

boolean isQuitting()

Is quitting boolean.

Returns:

true : quitting, false: not quiting

Since:

0.7.2

observe

int observe(IV8RuntimeObserver<?>... observers)

Traverse the internal V8 runtimes, apply the observer and return the observed V8 runtime count. This API is for collecting statistics. Executing code or changing the V8 runtime may result in inconsistent pool state or core dump.

Parameters:

observers - the observers

Returns:

the int

Since:

1.0.5

releaseEngine

void releaseEngine(IJavetEngine<R> iJavetEngine)

Release engine.

Parameters:

iJavetEngine - the javet engine

Since:

0.7.0

wakeUpDaemon

void wakeUpDaemon()

Wake up the daemon thread explicitly.

Since:

1.0.5