SessionLock (Tapestry API - 5.8.7)

```
public interface SessionLock
```
A wrapper around ReentrantReadWriteLock used to manage the lock for a session. Once a lock is acquired, a callback is registered with the PerthreadManager to release the lock at the end of the request.

Since:

5.4

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`acquireReadLock()`	Acquires the read lock, if the shared read lock, or exclusive write lock, is not already held by this thread.
`void`	`acquireWriteLock()`	Acquires the exclusive write lock; may release the (shared) read lock before acquiring the write lock; this may block for a while.

- Method Detail
  - acquireReadLock
```
void acquireReadLock()
```
    Acquires the read lock, if the shared read lock, or exclusive write lock, is not already held by this thread.
  - acquireWriteLock
```
void acquireWriteLock()
```
    Acquires the exclusive write lock; may release the (shared) read lock before acquiring the write lock; this may block for a while. Does nothing if the write lock is already held by this thread.