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JavaTM 2 Platform Std. Ed. v1.6.0
java.util.concurrent.atomic
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Constructor Summary | |
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AtomicLong()
Creates a new AtomicLong with initial value 0 . |
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AtomicLong(long initialValue)
Creates a new AtomicLong with the given initial value. |
Method Summary | |
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long |
addAndGet(long delta)
Atomically adds the given value to the current value. |
boolean |
compareAndSet(long expect,
long update)
Atomically sets the value to the given updated value if the current value == the expected value. |
long |
decrementAndGet()
Atomically decrements by one the current value. |
double |
doubleValue()
Returns the value of the specified number as a double . |
float |
floatValue()
Returns the value of the specified number as a float . |
long |
get()
Gets the current value. |
long |
getAndAdd(long delta)
Atomically adds the given value to the current value. |
long |
getAndDecrement()
Atomically decrements by one the current value. |
long |
getAndIncrement()
Atomically increments by one the current value. |
long |
getAndSet(long newValue)
Atomically sets to the given value and returns the old value. |
long |
incrementAndGet()
Atomically increments by one the current value. |
int |
intValue()
Returns the value of the specified number as an int . |
void |
lazySet(long newValue)
Eventually sets to the given value. |
long |
longValue()
Returns the value of the specified number as a long . |
void |
set(long newValue)
Sets to the given value. |
String |
toString()
Returns the String representation of the current value. |
boolean |
weakCompareAndSet(long expect,
long update)
Atomically sets the value to the given updated value if the current value == the expected value. |
Methods inherited from class java.lang.Number |
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byteValue, shortValue |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public AtomicLong(long initialValue)
initialValue
- the initial valuepublic AtomicLong()
0
.
Method Detail |
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public final long get()
public final void set(long newValue)
newValue
- the new valuepublic final void lazySet(long newValue)
newValue
- the new valuepublic final long getAndSet(long newValue)
newValue
- the new value
public final boolean compareAndSet(long expect, long update)
==
the expected value.
expect
- the expected valueupdate
- the new value
public final boolean weakCompareAndSet(long expect, long update)
==
the expected value.
May fail spuriously
and does not provide ordering guarantees, so is only rarely an
appropriate alternative to compareAndSet
.
expect
- the expected valueupdate
- the new value
public final long getAndIncrement()
public final long getAndDecrement()
public final long getAndAdd(long delta)
delta
- the value to add
public final long incrementAndGet()
public final long decrementAndGet()
public final long addAndGet(long delta)
delta
- the value to add
public String toString()
public int intValue()
Number
int
.
This may involve rounding or truncation.
int
.public long longValue()
Number
long
.
This may involve rounding or truncation.
long
.public float floatValue()
Number
float
.
This may involve rounding.
floatValue
in class Number
float
.public double doubleValue()
Number
double
.
This may involve rounding.
doubleValue
in class Number
double
.