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java.lang.Object java.util.AbstractCollection<E> java.util.AbstractSet<E> org.elasticsearch.util.concurrent.highscalelib.NonBlockingHashSet<E>
public class NonBlockingHashSet<E>
A simple wrapper around NonBlockingHashMap
making it implement the
Set
interface. All operations are Non-Blocking and multi-thread safe.
Constructor Summary | |
---|---|
NonBlockingHashSet()
Make a new empty NonBlockingHashSet . |
Method Summary | |
---|---|
boolean |
add(E o)
Add o to the set. |
void |
clear()
Empty the set. |
boolean |
contains(java.lang.Object o)
|
java.util.Iterator<E> |
iterator()
|
void |
readOnly()
Atomically make the set immutable. |
boolean |
remove(java.lang.Object o)
Remove o from the set. |
int |
size()
Current count of elements in the set. |
Methods inherited from class java.util.AbstractSet |
---|
equals, hashCode, removeAll |
Methods inherited from class java.util.AbstractCollection |
---|
addAll, containsAll, isEmpty, retainAll, toArray, toArray, toString |
Methods inherited from class java.lang.Object |
---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Set |
---|
addAll, containsAll, isEmpty, retainAll, toArray, toArray |
Constructor Detail |
---|
public NonBlockingHashSet()
NonBlockingHashSet
.
Method Detail |
---|
public boolean add(E o)
o
to the set.
add
in interface java.util.Collection<E>
add
in interface java.util.Set<E>
add
in class java.util.AbstractCollection<E>
o
was added to the set, false
if o
was already in the set.public boolean contains(java.lang.Object o)
contains
in interface java.util.Collection<E>
contains
in interface java.util.Set<E>
contains
in class java.util.AbstractCollection<E>
o
is in the set.public boolean remove(java.lang.Object o)
o
from the set.
remove
in interface java.util.Collection<E>
remove
in interface java.util.Set<E>
remove
in class java.util.AbstractCollection<E>
o
was removed to the set, false
if o
was not in the set.public int size()
size
in interface java.util.Collection<E>
size
in interface java.util.Set<E>
size
in class java.util.AbstractCollection<E>
public void clear()
clear
in interface java.util.Collection<E>
clear
in interface java.util.Set<E>
clear
in class java.util.AbstractCollection<E>
public java.util.Iterator<E> iterator()
iterator
in interface java.lang.Iterable<E>
iterator
in interface java.util.Collection<E>
iterator
in interface java.util.Set<E>
iterator
in class java.util.AbstractCollection<E>
public void readOnly()
readOnly()
call returns. This call can be called concurrently
(and indeed until the operation completes, all calls on the Set from any
thread either complete normally or end up calling readOnly()
internally).
This call is useful in debugging multi-threaded programs where the
Set is constructed in parallel, but construction completes after some
time; and after construction the Set is only read. Making the Set
read-only will cause updates arriving after construction is supposedly
complete to throw an IllegalStateException
.
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