java.util.concurrent.atomic
Class AtomicReferenceArray<E>
- Serializable
An array of object references in which elements may be updated
atomically. See the java.util.concurrent.atomic
package
specification for description of the properties of atomic
variables.
AtomicReferenceArray(E[] array) - Creates a new AtomicReferenceArray with the same length as, and
all elements copied from, the given array.
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AtomicReferenceArray(int length) - Creates a new AtomicReferenceArray of given length.
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boolean | compareAndSet(int i, E expect, E update) - Atomically sets the element at position i to the given
updated value if the current value == the expected value.
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E | get(int i) - Gets the current value at position i.
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E | getAndSet(int i, E newValue) - Atomically sets the element at position i to the given
value and returns the old value.
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void | lazySet(int i, E newValue) - Eventually sets the element at position i to the given value.
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int | length() - Returns the length of the array.
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void | set(int i, E newValue) - Sets the element at position i to the given value.
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String | toString() - Returns the String representation of the current values of array.
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boolean | weakCompareAndSet(int i, E expect, E update) - Atomically sets the element at position i to the given
updated value if the current value == the expected value.
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clone , equals , extends Object> getClass , finalize , hashCode , notify , notifyAll , toString , wait , wait , wait |
AtomicReferenceArray
public AtomicReferenceArray(E[] array)
Creates a new AtomicReferenceArray with the same length as, and
all elements copied from, the given array.
array
- the array to copy elements from
AtomicReferenceArray
public AtomicReferenceArray(int length)
Creates a new AtomicReferenceArray of given length.
length
- the length of the array
compareAndSet
public final boolean compareAndSet(int i,
E expect,
E update)
Atomically sets the element at position i to the given
updated value if the current value == the expected value.
i
- the indexexpect
- the expected valueupdate
- the new value
- true if successful. False return indicates that
the actual value was not equal to the expected value.
get
public final E get(int i)
Gets the current value at position i.
getAndSet
public final E getAndSet(int i,
E newValue)
Atomically sets the element at position i to the given
value and returns the old value.
i
- the indexnewValue
- the new value
lazySet
public final void lazySet(int i,
E newValue)
Eventually sets the element at position i to the given value.
i
- the indexnewValue
- the new value
length
public final int length()
Returns the length of the array.
set
public final void set(int i,
E newValue)
Sets the element at position i to the given value.
i
- the indexnewValue
- the new value
toString
public String toString()
Returns the String representation of the current values of array.
- toString in interface Object
- the String representation of the current values of array.
weakCompareAndSet
public final boolean weakCompareAndSet(int i,
E expect,
E update)
Atomically sets the element at position i to the given
updated value if the current value == the expected value.
May fail spuriously and does not provide ordering guarantees,
so is only rarely an appropriate alternative to compareAndSet.
i
- the indexexpect
- the expected valueupdate
- the new value