AgentBuilder.CircularityLock.Default

java.lang.Object
- net.bytebuddy.agent.builder.AgentBuilder.CircularityLock.Default

All Implemented Interfaces:

AgentBuilder.CircularityLock

Enclosing interface:

AgentBuilder.CircularityLock
```
public static class AgentBuilder.CircularityLock.Default
extends java.lang.Object
implements AgentBuilder.CircularityLock
```
A default implementation of a circularity lock. Since class loading already synchronizes on a class loader, it suffices to apply a thread-local lock.

Nested Class Summary
- Nested classes/interfaces inherited from interface net.bytebuddy.agent.builder.AgentBuilder.CircularityLock
  AgentBuilder.CircularityLock.Default, AgentBuilder.CircularityLock.Global, AgentBuilder.CircularityLock.Inactive

Field Summary

Fields
Modifier and Type	Field	Description
`private java.util.concurrent.ConcurrentMap<java.lang.Thread,java.lang.Boolean>`	`threads`	A map of threads to an unused boolean to emulate a thread-local state without using thread locals.

Constructor Summary

Constructors
Constructor Description

Default()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`acquire()`	Attempts to acquire a circularity lock.
`protected boolean`	`isLocked()`	Returns `true` if the current thread is currently locked.
`void`	`release()`	Releases the circularity lock if it is currently acquired.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - threads
```
private final java.util.concurrent.ConcurrentMap<java.lang.Thread,java.lang.Boolean> threads
```
    A map of threads to an unused boolean to emulate a thread-local state without using thread locals. This avoids using thread-local maps and does not interfere with Java fibers in case that an instrumentation is executed from a virtual thread where thread locals are not permitted.
- Constructor Detail
  - Default
```
public Default()
```
- Method Detail
  - acquire
```
public boolean acquire()
```
    Attempts to acquire a circularity lock.
    
    Specified by:
    
    acquire in interface AgentBuilder.CircularityLock
    
    Returns:
    
    true if the lock was acquired successfully, false if it is already hold.
  - release
```
public void release()
```
    Releases the circularity lock if it is currently acquired.
    
    Specified by:
    
    release in interface AgentBuilder.CircularityLock
  - isLocked
```
protected boolean isLocked()
```
    Returns true if the current thread is currently locked.
    
    Returns:
    
    true if the current thread is currently locked.