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## org.apache.http.impl.conn.tsccm
Class AbstractConnPool

    java.lang.Object
      org.apache.http.impl.conn.tsccm.AbstractConnPool

Direct Known Subclasses:
  ConnPoolByRoute

Deprecated. (4.2) use `AbstractConnPool`

    @Deprecated
    public abstract class AbstractConnPool

extends Object

An abstract connection pool. It is used by the `ThreadSafeClientConnManager`. The abstract pool includes a `poolLock`, which is used to synchronize access to the internal pool datastructures. Don't use `synchronized` for that purpose!

Since:
  4.0

Field Summary
`protected IdleConnectionHandler` | `idleConnHandler` Deprecated.
`protected boolean` | `isShutDown` Deprecated. Indicates whether this pool is shut down.
`protected Set<BasicPoolEntryRef>` | `issuedConnections` Deprecated.
`protected Set<BasicPoolEntry>` | `leasedConnections` Deprecated. References to issued connections
`protected int` | `numConnections` Deprecated. The current total number of connections.
`protected Lock` | `poolLock` Deprecated. The global lock for this pool.
`protected ReferenceQueue<Object>` | `refQueue` Deprecated.

Constructor Summary
`protected` | `AbstractConnPool()` Deprecated. Creates a new connection pool.

Method Summary
`protected void` | `closeConnection(OperatedClientConnection conn)` Deprecated. Closes a connection from this pool.
`void` | `closeExpiredConnections()` Deprecated.
`void` | `closeIdleConnections(long idletime, TimeUnit tunit)` Deprecated. Closes idle connections.
`abstract void` | `deleteClosedConnections()` Deprecated. Deletes all entries for closed connections.
`void` | `enableConnectionGC()` Deprecated.
`abstract void` | `freeEntry(BasicPoolEntry entry, boolean reusable, long validDuration, TimeUnit timeUnit)` Deprecated. Returns an entry into the pool.
`BasicPoolEntry` | `getEntry(HttpRoute route, Object state, long timeout, TimeUnit tunit)` Deprecated. Obtains a pool entry with a connection within the given timeout.
`protected abstract void` | `handleLostEntry(HttpRoute route)` Deprecated.
`void` | `handleReference(Reference<?> ref)` Deprecated.
`abstract PoolEntryRequest` | `requestPoolEntry(HttpRoute route, Object state)` Deprecated. Returns a new `PoolEntryRequest`, from which a `BasicPoolEntry` can be obtained, or the request can be aborted.
`void` | `shutdown()` Deprecated. Shuts down this pool and all associated resources.

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

Field Detail

### poolLock

    protected final Lock poolLock

  Deprecated.
  The global lock for this pool.

### leasedConnections

    @GuardedBy(value="poolLock")
    protected Set<BasicPoolEntry> leasedConnections

  Deprecated.
  References to issued connections

### numConnections

    @GuardedBy(value="poolLock")
    protected int numConnections

  Deprecated.
  The current total number of connections.

### isShutDown

    protected volatile boolean isShutDown

  Deprecated.
  Indicates whether this pool is shut down.

### issuedConnections

    protected Set<BasicPoolEntryRef> issuedConnections

  Deprecated.

### refQueue

    protected ReferenceQueue<Object> refQueue

  Deprecated.

### idleConnHandler

    protected IdleConnectionHandler idleConnHandler

  Deprecated.

Constructor Detail

### AbstractConnPool

    protected AbstractConnPool()

  Deprecated.
  Creates a new connection pool.

Method Detail

### enableConnectionGC

    public void enableConnectionGC()
                            throws IllegalStateException

  Deprecated.
  Throws:
    `IllegalStateException`

### getEntry

    public final BasicPoolEntry getEntry(HttpRoute route,
                                         Object state,
                                         long timeout,
                                         TimeUnit tunit)
                                  throws ConnectionPoolTimeoutException,
                                         InterruptedException

  Deprecated.
  Obtains a pool entry with a connection within the given timeout.

  Parameters:
    `route` - the route for which to get the connection
    `timeout` - the timeout, 0 or negative for no timeout
    `tunit` - the unit for the `timeout`, may be `null` only if there is no timeout
  Returns:
    pool entry holding a connection for the route
  Throws:
    `ConnectionPoolTimeoutException` - if the timeout expired
    `InterruptedException` - if the calling thread was interrupted

### requestPoolEntry

    public abstract PoolEntryRequest requestPoolEntry(HttpRoute route,
                                                      Object state)

  Deprecated.
  Returns a new `PoolEntryRequest`, from which a `BasicPoolEntry` can be obtained, or the request can be aborted.

### freeEntry

    public abstract void freeEntry(BasicPoolEntry entry,
                                   boolean reusable,
                                   long validDuration,
                                   TimeUnit timeUnit)

  Deprecated.
  Returns an entry into the pool. The connection of the entry is expected to be in a suitable state, either open and re-usable, or closed. The pool will not make any attempt to determine whether it can be re-used or not.

  Parameters:
    `entry` - the entry for the connection to release
    `reusable` - `true` if the entry is deemed reusable, `false` otherwise.
    `validDuration` - The duration that the entry should remain free and reusable.
    `timeUnit` - The unit of time the duration is measured in.

### handleReference

    public void handleReference(Reference<?> ref)

  Deprecated.

### handleLostEntry

    protected abstract void handleLostEntry(HttpRoute route)

  Deprecated.

### closeIdleConnections

    public void closeIdleConnections(long idletime,
                                     TimeUnit tunit)

  Deprecated.
  Closes idle connections.

  Parameters:
    `idletime` - the time the connections should have been idle in order to be closed now
    `tunit` - the unit for the `idletime`

### closeExpiredConnections

    public void closeExpiredConnections()

  Deprecated.

### deleteClosedConnections

    public abstract void deleteClosedConnections()

  Deprecated.
  Deletes all entries for closed connections.

### shutdown

    public void shutdown()

  Deprecated.
  Shuts down this pool and all associated resources. Overriding methods MUST call the implementation here!

### closeConnection

    protected void closeConnection(OperatedClientConnection conn)

  Deprecated.
  Closes a connection from this pool.

  Parameters:
    `conn` - the connection to close, or `null`

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