net.bytebuddy.agent.builder

Class AgentBuilder.PoolStrategy.WithTypePoolCache

java.lang.Object

net.bytebuddy.agent.builder.AgentBuilder.PoolStrategy.WithTypePoolCache

All Implemented Interfaces:

AgentBuilder.PoolStrategy

Direct Known Subclasses:

AgentBuilder.PoolStrategy.WithTypePoolCache.Simple

Enclosing interface:

AgentBuilder.PoolStrategy

@HashCodeAndEqualsPlugin.Enhance
public abstract static class AgentBuilder.PoolStrategy.WithTypePoolCache
extends Object
implements AgentBuilder.PoolStrategy

A type locator that uses type pools but allows for the configuration of a custom cache provider by class loader. Note that a TypePool can grow in size and that a static reference is kept to this pool by Byte Buddy's registration of a ClassFileTransformer what can cause a memory leak if the supplied caches are not cleared on a regular basis. Also note that a cache provider can be accessed concurrently by multiple ClassLoaders.

All types that are returned by the locator's type pool are resolved lazily.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AgentBuilder.PoolStrategy.WithTypePoolCache.Simple An implementation of a type locator AgentBuilder.PoolStrategy.WithTypePoolCache (note documentation of the linked class) that is based on a ConcurrentMap.

Nested classes/interfaces inherited from interface net.bytebuddy.agent.builder.AgentBuilder.PoolStrategy

AgentBuilder.PoolStrategy.ClassLoading, AgentBuilder.PoolStrategy.Default, AgentBuilder.PoolStrategy.Eager, AgentBuilder.PoolStrategy.ExtraLazy, AgentBuilder.PoolStrategy.WithTypePoolCache

Field Summary

Fields

Modifier and Type	Field and Description
protected TypePool.Default.WithLazyResolution.LazinessMode	lazinessMode The laziness mode to use for when to parse a class file.
protected TypePool.Default.ReaderMode	readerMode The reader mode to use for parsing a class file.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	WithTypePoolCache(TypePool.Default.ReaderMode readerMode) Creates a new type locator that creates TypePools but provides a custom TypePool.CacheProvider.
protected	WithTypePoolCache(TypePool.Default.ReaderMode readerMode, TypePool.Default.WithLazyResolution.LazinessMode lazinessMode) Creates a new type locator that creates TypePools but provides a custom TypePool.CacheProvider.

Method Summary

Modifier and Type	Method and Description
protected abstract TypePool.CacheProvider	locate(ClassLoader classLoader) Locates a cache provider for a given class loader.
TypePool	typePool(ClassFileLocator classFileLocator, ClassLoader classLoader) Creates a type pool for a given class file locator.
TypePool	typePool(ClassFileLocator classFileLocator, ClassLoader classLoader, String name) Creates a type pool for a given class file locator.

Methods inherited from class java.lang.Object

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

Field Detail

readerMode

protected final TypePool.Default.ReaderMode readerMode

The reader mode to use for parsing a class file.

lazinessMode

protected final TypePool.Default.WithLazyResolution.LazinessMode lazinessMode

The laziness mode to use for when to parse a class file.

Constructor Detail

WithTypePoolCache

protected WithTypePoolCache(TypePool.Default.ReaderMode readerMode)

Creates a new type locator that creates TypePools but provides a custom TypePool.CacheProvider.

Parameters:

readerMode - The reader mode to use for parsing a class file.

WithTypePoolCache

protected WithTypePoolCache(TypePool.Default.ReaderMode readerMode,
                            TypePool.Default.WithLazyResolution.LazinessMode lazinessMode)

Creates a new type locator that creates TypePools but provides a custom TypePool.CacheProvider.

Parameters:

readerMode - The reader mode to use for parsing a class file.

lazinessMode - The laziness mode to use for when to parse a class file.

Method Detail

typePool

public TypePool typePool(ClassFileLocator classFileLocator,
                         @MaybeNull
                         ClassLoader classLoader)

Creates a type pool for a given class file locator.

Specified by:

typePool in interface AgentBuilder.PoolStrategy

Parameters:

classFileLocator - The class file locator to use.

classLoader - The class loader for which the class file locator was created or null if the boot loader.

Returns:

A type pool for the supplied class file locator.

typePool

public TypePool typePool(ClassFileLocator classFileLocator,
                         @MaybeNull
                         ClassLoader classLoader,
                         String name)

Creates a type pool for a given class file locator. If a cache is used, the type that is currently instrumented is not used.

Specified by:

typePool in interface AgentBuilder.PoolStrategy

Parameters:

classFileLocator - The class file locator to use.

classLoader - The class loader for which the class file locator was created or null if the boot loader.

name - The name of the currently instrumented type.

Returns:

A type pool for the supplied class file locator.

locate

protected abstract TypePool.CacheProvider locate(@MaybeNull
                                                 ClassLoader classLoader)

Locates a cache provider for a given class loader.

Parameters:

classLoader - The class loader for which to locate a cache. This class loader might be null to represent the bootstrap loader.

Returns:

The cache provider to use.