Class AgentBuilder.PoolStrategy.WithTypePoolCache.Simple

java.lang.Object

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

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

All Implemented Interfaces:

AgentBuilder.PoolStrategy

Enclosing class:

AgentBuilder.PoolStrategy.WithTypePoolCache

@Enhance
public static class AgentBuilder.PoolStrategy.WithTypePoolCache.Simple
extends AgentBuilder.PoolStrategy.WithTypePoolCache

An implementation of a type locator AgentBuilder.PoolStrategy.WithTypePoolCache (note documentation of the linked class) that is based on a ConcurrentMap. It is the responsibility of the type locator's user to avoid the type locator from leaking memory.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static enum	AgentBuilder.PoolStrategy.WithTypePoolCache.Simple.BootstrapMarkerAction	An action that creates a class loader to mark the bootstrap loader without using null.

Nested classes/interfaces inherited from class AgentBuilder.PoolStrategy.WithTypePoolCache

AgentBuilder.PoolStrategy.WithTypePoolCache.Simple

Nested classes/interfaces inherited from interface AgentBuilder.PoolStrategy

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

Field Summary

Fields

Modifier and Type	Field	Description
private static final ClassLoader	BOOTSTRAP_MARKER	A default value for marking the boostrap class loader.
private final ConcurrentMap<? super ClassLoader, TypePool.CacheProvider>	cacheProviders	The concurrent map that is used for storing a cache provider per class loader.

Fields inherited from class AgentBuilder.PoolStrategy.WithTypePoolCache

lazinessMode, readerMode

Constructor Summary

Constructors

Constructor	Description
Simple(ConcurrentMap<? super ClassLoader, TypePool.CacheProvider> cacheProviders)	Creates a new type locator that caches a cache provider per class loader in a concurrent map.
Simple(TypePool.Default.ReaderMode readerMode, ConcurrentMap<? super ClassLoader, TypePool.CacheProvider> cacheProviders)	Creates a new type locator that caches a cache provider per class loader in a concurrent map.
Simple(TypePool.Default.ReaderMode readerMode, TypePool.Default.WithLazyResolution.LazinessMode lazinessMode, ConcurrentMap<? super ClassLoader, TypePool.CacheProvider> cacheProviders)	Creates a new type locator that caches a cache provider per class loader in a concurrent map.

Method Summary

Modifier and Type	Method	Description
private static <T> T	doPrivileged(PrivilegedAction<T> action)	A proxy for java.security.AccessController#doPrivileged that is activated if available.
protected ClassLoader	getBootstrapMarkerLoader()	Returns the class loader to serve as a cache key if a cache provider for the bootstrap class loader is requested.
protected TypePool.CacheProvider	locate(ClassLoader classLoader)	Locates a cache provider for a given class loader.

Methods inherited from class AgentBuilder.PoolStrategy.WithTypePoolCache

typePool, typePool

Methods inherited from class Object

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

Field Details

BOOTSTRAP_MARKER

private static final ClassLoader BOOTSTRAP_MARKER

A default value for marking the boostrap class loader.

cacheProviders

private final ConcurrentMap<? super ClassLoader, TypePool.CacheProvider> cacheProviders

The concurrent map that is used for storing a cache provider per class loader.

Constructor Details

Simple

public Simple(ConcurrentMap<? super ClassLoader, TypePool.CacheProvider> cacheProviders)

Creates a new type locator that caches a cache provider per class loader in a concurrent map. The type locator uses a fast TypePool.Default.ReaderMode.

Parameters:

cacheProviders - The concurrent map that is used for storing a cache provider per class loader.

Simple

public Simple(TypePool.Default.ReaderMode readerMode,
 ConcurrentMap<? super ClassLoader, TypePool.CacheProvider> cacheProviders)

Creates a new type locator that caches a cache provider per class loader in a concurrent map.

Parameters:

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

cacheProviders - The concurrent map that is used for storing a cache provider per class loader.

Simple

public Simple(TypePool.Default.ReaderMode readerMode,
 TypePool.Default.WithLazyResolution.LazinessMode lazinessMode,
 ConcurrentMap<? super ClassLoader, TypePool.CacheProvider> cacheProviders)

Creates a new type locator that caches a cache provider per class loader in a concurrent map.

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.

cacheProviders - The concurrent map that is used for storing a cache provider per class loader.

Method Details

doPrivileged

@Enhance
private static <T> T doPrivileged(PrivilegedAction<T> action)

A proxy for java.security.AccessController#doPrivileged that is activated if available.

Type Parameters:

T - The type of the action's resolved value.

Parameters:

action - The action to execute from a privileged context.

Returns:

The action's resolved value.

locate

protected TypePool.CacheProvider locate(@MaybeNull
 ClassLoader classLoader)

Description copied from class: AgentBuilder.PoolStrategy.WithTypePoolCache

Locates a cache provider for a given class loader.

Specified by:

locate in class AgentBuilder.PoolStrategy.WithTypePoolCache

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.

getBootstrapMarkerLoader

protected ClassLoader getBootstrapMarkerLoader()

Returns the class loader to serve as a cache key if a cache provider for the bootstrap class loader is requested. This class loader is represented by null in the JVM which is an invalid value for many ConcurrentMap implementations.

By default, a custom class loader is created to use as a marker.

Returns:

A class loader to represent the bootstrap class loader.