com.espertech.esper.util
Class ManagedReadWriteLock

java.lang.Object
  com.espertech.esper.util.ManagedReadWriteLock

public class ManagedReadWriteLock
extends java.lang.Object

Simple read-write lock based on ReentrantReadWriteLock that associates a name with the lock and traces read/write locking and unlocking.

Field Summary

static java.lang.String	ACQUIRE_TEXT Acquire text.
static java.lang.String	ACQUIRED_TEXT Acquired text.
static java.lang.String	RELEASE_TEXT Release text.
static java.lang.String	RELEASED_TEXT Released text.
static java.lang.String	TRY_TEXT Acquired text.

Constructor Summary

ManagedReadWriteLock(java.lang.String name, boolean isFair)
Ctor.

Method Summary

void	acquireReadLock() Lock read lock.
void	acquireWriteLock() Lock write lock.
java.util.concurrent.locks.ReentrantReadWriteLock	getLock()
void	releaseReadLock() Unlock read lock.
void	releaseWriteLock() Unlock write lock.
boolean	tryWriteLock(long msec) Try write lock with timeout, returning an indicator whether the lock was acquired or not.

Methods inherited from class java.lang.Object

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

Field Detail

ACQUIRE_TEXT

public static final java.lang.String ACQUIRE_TEXT

Acquire text.

See Also:

Constant Field Values

ACQUIRED_TEXT

public static final java.lang.String ACQUIRED_TEXT

Acquired text.

See Also:

Constant Field Values

TRY_TEXT

public static final java.lang.String TRY_TEXT

Acquired text.

See Also:

Constant Field Values

RELEASE_TEXT

public static final java.lang.String RELEASE_TEXT

Release text.

See Also:

Constant Field Values

RELEASED_TEXT

public static final java.lang.String RELEASED_TEXT

Released text.

See Also:

Constant Field Values

Constructor Detail

ManagedReadWriteLock

public ManagedReadWriteLock(java.lang.String name,
                            boolean isFair)

Ctor.

Parameters:

name - of lock

isFair - true if a fair lock, false if not

Method Detail

acquireWriteLock

public void acquireWriteLock()

Lock write lock.

tryWriteLock

public boolean tryWriteLock(long msec)

Try write lock with timeout, returning an indicator whether the lock was acquired or not.

Parameters:

msec - number of milliseconds to wait for lock

Returns:

indicator whether the lock could be acquired or not

releaseWriteLock

public void releaseWriteLock()

Unlock write lock.

acquireReadLock

public void acquireReadLock()

Lock read lock.

releaseReadLock

public void releaseReadLock()

Unlock read lock.

getLock

public java.util.concurrent.locks.ReentrantReadWriteLock getLock()