SessionManager (IBMPKCS11Impl Provider Class Documentation)

```
public class SessionManager
extends java.lang.Object
```
Manages Sessions for a crypto token. Each token can have multiple pkcs11 sessions. An application must use session to access the token's crypto functions. As each session can only perform one crypto operation at a time, SessionManager maintains two internal Session queues. One for sessions that only do crypto functions, one for sessions that can also create session objects. A session can not be closed if there are session objects in it. Closing it would destroy the objects. Objects in one session is accessible to other sessions, so it is fine for other sessions to perform crypto functions with this session's object. A Session is polled from the queue to perform a crypto operation. To reduce the overhead of open/close pkcs11 session, a Session object will return to the queue once it is done with the operation.

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`closeAllSessions()`
`void`	`closeSession(Session session)`
`void`	`demoteObjSession(Session objSession)`
`static SessionManager`	`getInstance(com.ibm.pkcs11.PKCS11Slot tokenSlot)`
`Session`	`getObjSession()` Returns a session that may be used to create new session objects.
`Session`	`getOpSession()` Returns an operation session..
`com.ibm.pkcs11.PKCS11TokenInfo`	`getToken()` Returns the token associated with this SessionManager.
`com.ibm.pkcs11.PKCS11Slot`	`getTokenSlot()`
`void`	`releaseSession(Session session)` Once a session is no longer being used, session manager puts it back to the session Queue.

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